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MC1489MG - Quad EIA-232D Receiver | onsemi | 14-SOIC
MC1489MG

MC1489MG - Quad EIA-232D Receiver | onsemi | 14-SOIC

The onsemi MC1489MG is a monolithic quadruple EIA-232D line receiver designed for data-terminal equipment and data-communication equipment interfaces. It contains four receiver channels in a 14-pin SOIC package, accepts input signals ranging from ±30 V, and presents an input resistance between 3.0 kΩ and 7.0 kΩ. The MC1489MG is identified as a commercial extended-temperature grade device. An EIA-232 line receiver is an interface IC that converts bipolar RS-232 voltage levels into digital logic levels. It belongs to the line-receiver class within interface ICs, a larger functional group that also includes RS-232 drivers, transceivers, and multi-protocol interface devices. Unlike a transceiver, the MC1489MG performs reception only, allowing equipment with separate transmit and receive signal paths to use a dedicated receiver for each direction. The four-channel architecture reduces the component count in equipment that exchanges multiple serial signals. Each receiver has a response-control function, which permits a resistor or a resistor and bias-voltage source to influence receiver behavior. Input resistance of 3.0 kΩ to 7.0 kΩ provides the required input loading for EIA-232D interfaces, while the ±30 V input signal range supports the voltage excursions characteristic of RS-232 signaling. The MC1489MG is based on a monolithic low-power Schottky receiver design. This implementation supports four independent receive channels without requiring a separate receiver package for every signal. Because the part contains receivers rather than transmitters, it cannot independently generate the RS-232 voltage swings required to drive a remote communication port; it must be paired with an appropriate line driver when a design needs both transmission and reception. Typical uses include industrial serial interfaces, data-terminal equipment, data-communication equipment, remote-control links, and legacy RS-232 ports. The device is particularly relevant when an existing design requires four receive channels in a single 14-pin surface-mount package. Its commercial extended temperature designation also makes it a candidate for equipment operating outside the usual consumer temperature range. PCB design should preserve the EIA-232 input network, provide a stable supply and ground reference, and route each receiver input away from fast switching or high-current paths. The response-control terminals should be left at the configuration shown in the manufacturer application guidance. Review the pin-description table and operating limits in the manufacturer datasheet before finalizing the footprint and external networks.

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MC1489N - Quad RS-232 Line Receiver | Texas Instruments
MC1489N

MC1489N - Quad RS-232 Line Receiver | Texas Instruments

The Texas Instruments MC1489N is a monolithic quadruple RS-232 line receiver designed for TIA/EIA-232-F data-terminal and data-communication interfaces. It provides four receiver channels, operates from a single 4.5 V to 5.5 V supply, accepts input signals spanning ±30 V, and is offered in a 14-pin PDIP package. Each receiver includes a response-control input that supports threshold shifting and input-noise filtering. A line receiver is an interface-circuit category used to convert bipolar RS-232 signals into logic-level signals suitable for digital equipment. In the broader hierarchy, a receiver belongs to an interface IC, then to a communications or transceiver IC, and ultimately to the semiconductor family. The MC1489N is a receive-only counterpart to RS-232 driver ICs and is suitable wherever a design needs multiple incoming serial-data channels but no integrated transmit channels. The principal features include four independent receivers, a low-power Schottky implementation, approximately 7 kΩ input resistance, a ±30 V input signal range, and operation from one 4.5 V to 5.5 V supply. Built-in input hysteresis provides double switching thresholds, which helps prevent noise from repeatedly changing receiver output states around a transition point. The response-control terminals provide additional control over receiver thresholds and noise filtering. Technically, the MC1489N separates the high-voltage RS-232 input domain from the digital output domain. Each channel accepts a bipolar signal referenced to the receiver's ground, while the receiver's response-control terminal can be connected to a resistor or to a resistor and bias-voltage source. This arrangement permits circuit-level adjustment when a system requires particular threshold or filtering behavior. Typical applications include multi-channel serial data acquisition, industrial control links, legacy peripheral interfaces, test equipment, point-to-point communications equipment, and systems requiring several RS-232 inputs. The 14-pin PDIP package also makes the device suitable for through-hole prototypes and designs assembled with conventional DIP sockets. When laying out a board around the MC1489N, keep each input route away from fast digital switching nodes and connect its response-control network close to the relevant receiver pin. Because the device is receive-only, a separate RS-232 driver is required for a design that also needs to transmit. The supplied manufacturer and distributor sources do not publish a complete verified pin table or current unit price in the retrieved data. This page consolidates the verified manufacturer description, package and supply information, distributor availability references, and carefully qualified replacement candidates. It also adds comparison, application, and design guidance that is not normally visible in a short distributor listing, while clearly separating verified facts from values that still require datasheet or distributor confirmation.

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MC1489NE4 - Quad RS-232 Line Receiver, 5V | Texas Instruments
MC1489NE4

MC1489NE4 - Quad RS-232 Line Receiver, 5V | Texas Instruments

The Texas Instruments MC1489NE4 is a monolithic quadruple RS-232 line receiver designed to interface data terminal equipment (DTE) with data communications equipment (DCE) in conformance with EIA/TIA-232-F, housed in a 14-pin PDIP (N) package with a 5 V nominal supply and four independent receiver channels. A line receiver is an interface IC that converts large-swing serial-communication voltage levels (up to ±30 V in RS-232 systems) into safe TTL/CMOS logic levels for a microcontroller or UART. Within the signal-chain hierarchy, the MC1489NE4 belongs to the line receiver family of interface ICs, sitting between the physical RS-232 cable and the digital logic of a serial port, complementing a line driver such as the MC1488 or SN75188 on the transmit side. Key features include an input signal range of ±30 V, an input resistance of 3.0 kOhm to 7.0 kOhm, and a separate response-control (CONT) terminal for each receiver, per the Texas Instruments datasheet. The response-control pin lets a designer add an external resistor, or a resistor plus bias voltage, to shape input thresholds and noise immunity - a flexibility point that distinguishes the MC1489 family from fixed-threshold receivers. Technically, the device is fabricated as a low-power Schottky bipolar monolithic circuit. Each receiver senses a differential-mode-comparable single-ended RS-232 input and produces a logic-level output with defined high and low thresholds. Power dissipation ratings in the datasheet list 950 mW at 25 C for the D package and 1150 mW for the N package, with derating factors above 25 C, and a commercial temperature grade up to 70 C as listed by distributors for the MC1489NE4 suffix. Typical applications include legacy RS-232 serial ports on industrial equipment, programmable logic controller (PLC) communication cards, point-of-sale terminals, modem interfaces, and instrumentation front ends that must still accept ±12 V or ±15 V signaling from older field devices. A key design consideration is threshold shaping via the CONT pins: adding a positive bias raises the input threshold and improves noise immunity in electrically harsh environments, while leaving the pin open restores the default response. Also verify the 5 V rail tolerance, since the device is specified for a nominal VCC of 5 V with a distributor-listed maximum around 5.5 V. This page adds value beyond the raw datasheet: it synthesizes drop-in alternative comparisons (SN75189AN, MC1489P), application guidance, and design notes for engineers maintaining RS-232 legacy systems.

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MC1489P - Quad RS-232 Line Receiver | STMicroelectronics
MC1489P

MC1489P - Quad RS-232 Line Receiver | STMicroelectronics

The STMicroelectronics MC1489P is a four-channel RS-232 line receiver IC with a 14-pin PDIP package. The device accepts four receiver channels, provides logic threshold shifting, incorporates input hysteresis, and includes built-in response control for input-noise filtering. According to the manufacturer datasheet listing, the input resistance is 7 kΩ, the input signal range is ±30 V, and the maximum supply voltage is 10 V. A line receiver is an interface IC that converts electrical signals arriving over a communication link into logic-level signals for a host controller. As part of the broader hierarchy of interface ICs, line receivers belong to the RS-232 transceiver family and operate alongside line drivers in point-to-point or multidrop serial interfaces. The MC1489P provides four receivers in one package, allowing one device to handle four incoming data channels while reducing board area and component count. The receiver architecture includes logic threshold shifting, which accommodates RS-232 negative and positive signaling, and input hysteresis, which helps the receiver maintain a defined switching state in the presence of small input-voltage variations. The built-in response control provides input-noise filtering, making the MC1489P suitable for systems where the received serial data must be converted into dependable digital levels. A maximum supply voltage of 10 V provides the key verified operating limit for the supplied device. The MC1489P is identified as a commercial extended part in the available product data, with an operating temperature range of 0°C to +70°C and a PDIP-14 through-hole package. It is supplied in a tube format for automated or manual production handling. The four-channel arrangement is useful in industrial control links, peripheral interfaces, instrumentation, and embedded systems that need several receive functions without using four separate single-channel receiver packages. Typical applications include multi-channel RS-232 equipment interfaces, industrial controller serial ports, data-acquisition equipment, test and measurement systems, and embedded control consoles. Because the verified data identifies the part as a receiver rather than a combined transceiver, it is best used on the receive side of an RS-232 connection. A transmit driver may be required separately when the same board also needs to originate RS-232 signals. The primary design consideration is to validate every external signal against the documented ±30 V input range and to operate the receiver from a supply no greater than 10 V. PCB layout should preserve the pin assignments of the PDIP-14 footprint, provide an unobstructed ground connection, and avoid placing high-current switching paths adjacent to receiver inputs. The available product listing reports a 7 kΩ input resistance, so cable termination and input-biasing decisions should account for that loading. This page consolidates verified distributor information, package details, practical application guidance, and cross-reference results for the MC1489P. It also distinguishes documented pin-compatible alternatives from parts that are merely functionally similar, helping engineers make package and footprint decisions before committing to a replacement.

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MC1489PG - Quad EIA-232D Receiver | onsemi | 14-PDIP
MC1489PG

MC1489PG - Quad EIA-232D Receiver | onsemi | 14-PDIP

The onsemi MC1489PG is a monolithic quad line receiver designed for EIA-232D data-terminal and data-communication interfaces, with four receiver channels and a 3.0 kΩ to 7.0 kΩ input resistance in a 14-pin PDIP package. The 0.300-inch, 7.62 mm package supports conventional through-hole PCB layouts and provides a direct interface between RS-232 line signals and digital logic systems. An EIA-232D line receiver is an interface IC that converts bipolar RS-232 signal levels into logic-compatible signals for digital equipment. The receiver belongs to the RS-232 interface hierarchy, where transceivers combine receive and transmit functions and line drivers provide the complementary output stage. A quad receiver integrates four independent channels in one package, reducing component count and simplifying parallel serial-interface designs. The MC1489PG provides four EIA-232D receivers, an input resistance specified from 3.0 kΩ to 7.0 kΩ, and a 14-pin PDIP package. Each channel includes a response-control function in the device family architecture, allowing the receiver to be enabled or disabled according to the surrounding interface design. The through-hole package also makes the device suitable for legacy industrial, telecommunications, instrumentation, and control systems where plated-through-hole assembly remains common. The monolithic construction places four receiver sections on one semiconductor device and standardizes the electrical interface for EIA-232D equipment. Input impedance limits the loading applied to the connected RS-232 source, while the receiver threshold determines whether a differential line voltage is interpreted as a valid logic state. Designers should use the manufacturer datasheet pin-description table and operating-limit tables when assigning inputs, response-control terminals, supply connections, and ground returns. Typical uses include multi-channel RS-232 data acquisition, industrial console links, equipment-control interfaces, legacy serial adapters, and embedded systems that communicate with older peripherals. The four-channel arrangement is especially useful when a system exchanges several independent RS-232 signals or requires a receive-only interface alongside a separate line-driver device. When laying out the PCB, route the four receiver inputs away from switching nodes and place interface protection close to connector entries. Confirm the receiver enable state during reset, keep ground returns short, and test every unused channel for a defined logic level. The DIP footprint simplifies through-hole assembly, but the 7.62 mm pin pitch still requires adequate spacing for soldering and connector routing. This product page combines the verified MC1489PG identification, package information, EIA-232D function, receiver count, input-resistance range, source links, and technically constrained replacement analysis to support component selection, board review, sourcing, and design-in decisions.

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MC1648M - Voltage-Controlled Oscillator | Motorola
MC1648M

MC1648M - Voltage-Controlled Oscillator | Motorola

The Motorola MC1648M is a voltage-controlled oscillator designed for frequency synthesis, modulation, and signal-generation applications. According to the available Motorola MC1648 documentation, the device requires an external parallel tank circuit consisting of an inductor and capacitor; maximum performance is obtained with QL greater than or equal to 100 at the operating frequency. A varactor diode may be placed in the tank circuit to provide a voltage-variable input for voltage-controlled oscillator operation. A voltage-controlled oscillator, or VCO, generates an output signal whose frequency varies with an applied control voltage. The MC1648 belongs to the broader clock and timing IC family, where it provides a tunable oscillator rather than a fixed-frequency clock. Its external tank circuit allows the designer to select inductance and capacitance for the target operating range, while the control voltage provides fine frequency adjustment. This architecture is useful in FM transmitters, frequency synthesizers, clock-generation circuits, and frequency-discriminator systems. The main verified technical characteristics are its external parallel LC-tank requirement and the recommended tank quality factor of QL at least 100 for maximum performance. The device also supports voltage-variable operation when a varactor diode is incorporated into the tank circuit. The supplied search results identify MC1648M as a Motorola voltage-controlled oscillator and associate it with a DIP-style MC1648 package family, but the detailed electrical ratings, frequency limits, supply voltage, output characteristics, pin names, and package dimensions were not included in the verified dataset. For design implementation, the external tank components should be placed close to the oscillator pins and selected for the intended frequency range. Component tolerance, parasitic capacitance, and inductor Q can shift the operating frequency. The control-voltage range and permitted control-voltage slew rate should be verified in the manufacturer datasheet before relying on the part for precision frequency control. Typical uses include FM radio modulation, tone generation, frequency conversion, and tunable clock sources. The MC1648M is most appropriate when an external LC network and application-specific frequency calibration are acceptable. Modern designs may instead choose a higher-integration oscillator when smaller size, digital calibration, or a specified phase-noise performance is required. This page combines the verified Motorola MC1648 tank-circuit requirements, distributor availability information, pricing context, and practical selection guidance. The verified distributor listing shows MC1648M in stock at LCSC with a starting price of $1.0043. Pricing and inventory should be checked with the authorized supplier before purchase, especially because legacy semiconductor availability can vary by package, region, and production status.

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MC3302D - Quad 3-36 V Comparator | onsemi | Analog IC
MC3302D

MC3302D - Quad 3-36 V Comparator | onsemi | Analog IC

onsemi MC3302D is a quad voltage comparator containing four independent precision comparator channels, a 3 V to 36 V single-supply operating range, and an offset voltage specification as low as 2.0 mV maximum per channel. The component is offered in a 14-lead small-outline package for level-detection, low-level-sensing, memory, consumer, automotive, and industrial circuits. A voltage comparator is an analog integrated circuit that compares two input voltages and changes its output state when the difference between them changes sign. The MC3302D belongs to the comparator hierarchy within analog and amplifier ICs, where precise threshold comparison is used to convert an analog condition into a digital decision for control logic, protection circuits, sensing systems, and memory interfaces. Each of the four MC3302D channels is independent, allowing one package to implement four separate threshold decisions. The verified source describes the series as a precision single-supply quad comparator with offset voltage down to 2.0 mV maximum. It also identifies 25 nA typical input bias current and plus or minus 5 nA typical input offset current for the related MC3302DR2G description, useful characteristics when the design must limit input loading or offset-related switching errors. The device supports operation from a 3 V to 36 V supply and can also operate from dual supplies when the supply constraints are satisfied. The cited comparison information states that dual-supply operation is possible when the difference between supplies remains between 2 V and 28 V and VCC is at least 1.5 V more positive than the negative supply. These details make the comparator suitable for both compact low-voltage systems and wider industrial rails. Typical uses include level detection, low-level sensing, memory applications, and consumer, automotive, or industrial electronic equipment. In each case, the four independent channels can monitor separate thresholds without requiring four separate comparator packages, reducing component count while preserving independent decision paths. Designers should verify input common-mode limits, output configuration, propagation delay, input overvoltage behavior, and input/output pin functions against the manufacturer datasheet before finalizing a board. The verified data does not provide a complete pin table or all timing limits, so those parameters should not be inferred from the broader LM139-family description. This page consolidates the verified onsemi product information, distributor pricing and availability, cross-reference candidates, and practical application guidance. It distinguishes confirmed ratings from parameters requiring direct datasheet confirmation, helping engineers evaluate MC3302D without relying on incomplete distributor summaries.

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MC3302DG - 3-36V Quad Comparator | onsemi | 14-SOIC
MC3302DG

MC3302DG - 3-36V Quad Comparator | onsemi | 14-SOIC

onsemi MC3302DG is a single-supply quad comparator IC with four independent comparison channels, a 3 V to 36 V operating range and a 14-SOIC surface-mount package. It is designed for general-purpose level detection, low-level sensing and memory applications, with CMOS, open-collector and TTL-compatible output characteristics. A comparator is an analog integrated circuit that compares an input voltage against a reference voltage and produces a digital logic result. The MC3302DG belongs to the comparator hierarchy within analog mixed-signal ICs, where its four channels provide compact threshold monitoring, signal conditioning and system-level decision logic. Compared with a general-purpose operational amplifier used as a comparator, this device is purpose-built for logic-level output behavior. Key features include four comparators in one package, single-supply operation from 3 V to 36 V, typical low input bias current of 25 nA, typical input offset current of plus or minus 5 nA, and open-collector outputs suitable for CMOS and TTL-compatible interfacing. The commercial temperature range is -40 C to +85 C, making the part suitable for industrial and commercial equipment when its electrical ratings are respected. The low input bias current helps reduce errors in high-impedance sensing circuits, while the low input offset current supports sensing nodes where small current differences determine the comparison result. Its open-collector output architecture gives the designer control over pull-up voltage and can support wired logic, but each output requires an appropriate pull-up arrangement to operate as a conventional logic signal. Typical applications include battery threshold detection, power-supply monitoring, memory-cell sensing, industrial control interfaces, sensor conditioning and general digital threshold logic. The 14-SOIC package offers enough pin spacing for hand assembly and inspection while supporting compact PCB layouts in industrial control, instrumentation and embedded systems. When designing around the MC3302DG, account for the open-collector output, choose suitable pull-up resistors, maintain the input common-mode range across temperature, and verify output-state timing in the complete system. Because several channels share a package, power-supply noise and ground-return paths can affect more than one comparator, so careful decoupling and routing remain important. This product page combines the manufacturer part identity, verified distributor data, package information, application guidance, design notes and documented drop-in alternatives to support faster component selection and PCB-level replacement planning.

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MC3302P - Quad Single-Supply Comparator | onsemi
MC3302P

MC3302P - Quad Single-Supply Comparator | onsemi

The onsemi MC3302P is a quad single-supply comparator with a 14-pin PDIP package. It provides four independent comparator channels for level detection, low-level sensing, memory applications, and other consumer, automotive, and industrial electronics systems. The verified product data identifies a typical input bias current of 25 nA and a typical input offset current of ±5.0 nA, while the specified comparison capability covers ±15 V and 30 V operation. Its through-hole PDIP-14 construction supports legacy industrial and automotive circuit boards that were designed around a quad comparator rather than a newer surface-mount package. A comparator is an analog integrated circuit that compares two input voltages and produces a logic-level output indicating which input is higher. The MC3302P belongs to the comparator hierarchy, which also includes voltage comparators and differential amplifiers used in control and signal-conditioning systems. As a single-supply device, it is intended for systems where the comparator must operate from one supply rail while detecting small voltage differences within that rail. The MC3302P's four channels provide practical space savings compared with four discrete comparators. Its typical 25 nA input bias current minimizes loading on high-impedance sensing nodes, while the typical ±5.0 nA input offset current supports accurate threshold decisions near the reference voltage. The device is suited to console, automotive, and industrial applications where level detection and low-level sensing must be implemented with a familiar 14-pin through-hole footprint. Each channel compares an inverting and a non-inverting input and provides an open-collector output, allowing the outputs to be pulled up as required by the host logic and to support wired logic when several outputs are combined. The open-collector architecture provides design flexibility but requires an external pull-up resistor. The output transistor can sink current when the comparator condition is met, while the pull-up establishes the inactive high voltage. Typical uses include battery threshold detection, sensor signal conditioning, window or level comparison, memory-control interfaces, and industrial control modules. Because this is a legacy-style PDIP device, it is especially relevant to maintenance of existing equipment rather than new space-constrained designs. Designers should confirm the exact pinout and output truth table against the manufacturer documentation before modifying an existing board. The principal design consideration is supply bypassing. Place the required decoupling capacitor close to the device supply pins and return each comparator input directly to its pin rather than routing it through shared analog traces. Account for input offset and bias currents when setting very small thresholds, and use a pull-up resistor compatible with the required output rise time and available sink current. This product record combines verified manufacturer and distributor information with package, application, design, and replacement guidance. It also distinguishes exact technical data from values that require confirmation, helping engineers source MC3302P parts without treating unsupported compatibility or price claims as verified facts.

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MC3302PG - 4-Channel 3-36V Comparator | onsemi
MC3302PG

MC3302PG - 4-Channel 3-36V Comparator | onsemi

The onsemi MC3302PG is a four-channel, general-purpose comparator designed for single-supply operation across a 3 V to 36 V input range. It provides CMOS and TTL-compatible open-collector outputs, a 1 mA supply current specification, and a response time of 1.3 microseconds. The device is packaged in a 14-pin PDIP package for through-hole industrial, consumer, and automotive electronics assemblies. A comparator is an analog integrated circuit that compares two input voltages and produces a logic-level indication of their relationship. The MC3302PG belongs to the comparator hierarchy within analog ICs and interface ICs. Its four independent channels allow a single package to perform multiple threshold, level-detection, low-level-sensing, or memory-interface functions while operating from one supply rail. The primary electrical features are the wide 3 V to 36 V operating range, four general-purpose comparator channels, 1.3 microsecond response time, and 1 mA supply current. CMOS and TTL output compatibility allows the open-collector outputs to interface with a broad range of digital logic. The 14-pin PDIP package also supports conventional through-hole assembly and hand prototyping without requiring a fine-pitch surface-mount footprint. Each comparator section is intended to operate from the same single supply, making the IC suitable for systems where a positive supply rail is available but split bipolar rails are not. Open-collector outputs provide a flexible output architecture, while the common-device package simplifies inventory and reduces the number of discrete comparator components required on a board. The 1.3 microsecond response time is appropriate for threshold monitoring and control functions that do not require sub-microsecond timing. Typical uses include level detection, low-level sensing, memory applications, industrial control inputs, consumer equipment, automotive signal interfaces, and digital threshold crossings. The four-channel arrangement is particularly useful when several sensed voltages must be compared against independent references or when redundant comparator decisions are needed within one package. Designers should account for the open-collector output configuration, including pull-up requirements and pull-up resistor selection. Input common-mode range, output saturation behavior, supply-current variation, and input offset must be checked against the manufacturer datasheet for the exact operating condition. Input leads should be routed away from switching nodes and noisy return paths to prevent false comparator transitions. This product page combines the core MC3302PG electrical characteristics, same-footprint replacement options, application guidance, and practical design notes. It is intended to help engineers identify the correct package, confirm logic compatibility, and plan PCB implementation before requesting a quotation for production sourcing.

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MC3303D - Quad 30V 1MHz Op Amp | Texas Instruments
MC3303D

MC3303D - Quad 30V 1MHz Op Amp | Texas Instruments

The Texas Instruments MC3303D is a quad general-purpose operational amplifier designed for single-supply operation, with a 30 V maximum supply rating, approximately 1 MHz unity-gain bandwidth, and a 14-pin SOIC package. The four amplifiers share a common package while providing separate differential input and output connections for independent analog signal conditioning. An operational amplifier is a voltage-feedback amplifier used to amplify, buffer, filter, compare, or reshape analog signals. Quad operational amplifiers combine four amplifier channels in one package, reducing board area and simplifying designs that need multiple analog functions. The MC3303D belongs to the broader hierarchy of operational amplifier, analog amplifier, analog IC, and semiconductor. Key verified features include four amplifier circuits, single-ended circuit configuration, a 30 V supply rating for the Texas Instruments MC3303D, and a unity-gain bandwidth of 1 MHz. The onsemi MC3303D listing additionally describes a voltage-feedback architecture, 0.6 V/µs slew rate, nominal 14 V supply, and an operating-temperature range from -40 °C to 85 °C. Because MC3303D is used by more than one manufacturer, engineers should confirm the manufacturer-specific orderable datasheet before release. The MC3303D combines four high-voltage-capable amplifiers in a 14-terminal SOIC-14 package. Its approximately 1 MHz bandwidth is suitable for general-purpose signal processing, including audio-frequency stages, control loops, sensor interfaces, and active filtering. The available verified data does not state input offset voltage, input bias current, noise density, common-mode input range, output swing, or short-circuit current for the Texas Instruments version. Typical uses include four-channel sensor conditioning, low-frequency active filters, instrumentation stages, audio preamplification, comparator-style threshold circuits, and general analog buffers. Because four independent channels are integrated, a design can also use the amplifiers for mixed functions such as gain, filtering, level shifting, and output buffering without using four separate packages. Designers should verify input common-mode range, output swing, input offset, bias current, noise, stability, and compensation requirements against the exact manufacturer datasheet. The verified web results identify different electrical details for the Texas Instruments, onsemi, and STMicroelectronics versions sharing the MC3303D suffix, so package compatibility alone does not prove specification compatibility. This page combines verified manufacturer and distributor information with practical procurement guidance, explicitly identifies unavailable electrical parameters, and distinguishes same-package drop-in candidates from broader functional equivalents. It is intended to support engineering selection without treating devices with identical suffixes from different manufacturers as automatically interchangeable.

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MC3303DG - 4-Channel 1 MHz Op Amp | onsemi | 14-SOIC
MC3303DG

MC3303DG - 4-Channel 1 MHz Op Amp | onsemi | 14-SOIC

The onsemi MC3303DG is a four-channel general-purpose operational amplifier with true differential inputs, 1 MHz gain-bandwidth product, and 0.6 V/us slew rate, housed in a 14-pin SOIC package. Designed for single-supply operation from 3 V to 36 V, the device also supports split-supply operation, making it suitable for industrial control, instrumentation, sensor conditioning, and general analog signal-processing systems. Each amplifier includes internal frequency compensation, low input bias current, and short-circuit protection, allowing stable operation without external compensation networks in typical closed-loop configurations. An operational amplifier is an analog integrated circuit that amplifies the voltage difference between its inverting and non-inverting inputs. In the product taxonomy, the MC3303DG belongs to the operational-amplifier and instrumentation-amplifier hierarchy, then to the broader amplifier IC and semiconductor categories. Its internally compensated architecture simplifies design by fixing the gain-bandwidth relationship while preserving a practical combination of supply flexibility, low power consumption, and general-purpose functionality. The principal electrical features include four independent amplifiers, 1 MHz gain-bandwidth product, 0.6 V/us slew rate, and 8 mV input offset voltage as listed for the industrial-temperature version. The device operates from 3 V to 36 V under a single supply, while dual-supply operation remains possible when the total supply span is adequate. A class AB output stage supports practical drive into typical feedback networks, and true differential inputs help reject common-mode signals when both inputs are biased within the common-mode range. The MC3303 architecture is intended as a cost-conscious alternative to the uA741-class quad amplifier while adding advantages for modern single-supply systems. Internal frequency compensation removes the need for a dominant-pole compensation capacitor in most closed-loop applications. Designers must still account for output swing, input common-mode range, bias current, noise, stability, and supply bypassing when using the amplifier in precision or high-frequency circuits. Typical applications include industrial control loops, transducer and sensor signal conditioning, audio preamplification, analog measurement front ends, power-supply feedback networks, and low-frequency communications equipment. Four amplifiers in one package can reduce board area in designs requiring multiple independent analog channels, although common supply routing and decoupling remain critical. The most important design practice is to place input, output, and bypass connections for short, low-impedance paths while keeping sensitive input traces away from power outputs and switching nodes. Verify the exact input and output voltage limits, bias-current behavior, load capability, and noise specifications against the manufacturer datasheet before finalizing a precision application. This page consolidates verified distributor information, package-specific alternatives, technical comparisons, and practical design guidance for engineers evaluating the MC3303DG. It emphasizes what is confirmed from supplied sources and explicitly marks unavailable electrical details rather than estimating them, supporting more reliable procurement and design decisions.

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MC3303DR - Quad 30V 1MHz Operational Amplifier | Texas Instruments
MC3303DR

MC3303DR - Quad 30V 1MHz Operational Amplifier | Texas Instruments

The Texas Instruments MC3303DR is a quad, 30-V, 1-MHz operational amplifier packaged in a 14-pin SOIC (D). The device combines four amplifiers on one die, supports single-supply operation from 3 V to 36 V, and includes a class AB output stage, true differential inputs, internal frequency compensation, and short-circuit protection. Its four-amplifier arrangement reduces board area in instrumentation, buffering, and general-purpose analog signal-processing circuits. An operational amplifier, or op amp, is a high-gain differential amplifier that uses feedback to control gain, impedance, bandwidth, and output behavior. The MC3303 belongs to the general-purpose amplifier hierarchy: operational amplifier, voltage-feedback amplifier, analog amplifier, and integrated circuit. Its low-power quad configuration is intended for cost-sensitive designs requiring several independent amplifier channels on a compact PCB footprint. The primary performance characteristics include a 1-MHz gain-bandwidth product, a 30-V maximum operating rating in the product designation, and operation from a 3-V to 36-V single supply. Split-supply operation is also possible when the total supply range is respected. A class AB output stage supports linear operation, while true differential inputs provide the conventional non-inverting and inverting input arrangement expected by general-purpose amplifier designs. Internal frequency compensation removes the need for an external dominant compensation capacitor in ordinary closed-loop applications. Short-circuit protection improves robustness when an output is driven into a low-impedance load. These features simplify implementation, but the amplifier still requires careful common-mode, output-swing, stability, and supply-decoupling analysis for each specific circuit. Typical uses include four-channel sensor conditioning, instrumentation buffering, low-frequency active filtering, general signal amplification, and industrial control interfaces. The MC3303DR is particularly appropriate when a quad low-power package, wide single-supply range, and moderate 1-MHz bandwidth are more important than rail-to-rail input or output operation. During PCB design, place input, output, and supply bypass components close to their associated pins. Keep sensitive input traces away from switching nodes and high-current return paths. Verify output-voltage headroom, common-mode range, load stability, and power dissipation across temperature before treating the nominal supply limits as usable design limits. This product data combines manufacturer information, package and lifecycle details, practical design guidance, and same-footprint replacement options. It also identifies the electrical checks engineers should perform before replacing the MC3303DR in an existing instrumentation or control design.

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MC3303DT - 1MHz Low-Power Quad Op Amp | STMicroelectronics
MC3303DT

MC3303DT - 1MHz Low-Power Quad Op Amp | STMicroelectronics

STMicroelectronics MC3303DT is a low-power, quad bipolar operational amplifier featuring four amplifiers, true differential inputs, internally compensated operation, and a 1 MHz gain-bandwidth product. The device operates from single +3 V to +36 V supplies or from dual ±18 V supplies and is packaged in a 14-pin SOIC. Each amplifier is designed for general-purpose signal conditioning using its Class AB output stage and short-circuit-protected outputs. An operational amplifier is a voltage-gain element that compares its inverting and non-inverting inputs and drives its output toward a voltage representing the difference between them. The quad configuration belongs to the operational-amplifier family within analog integrated circuits and amplifier ICs. MC3303DT provides four independent amplifiers in one package, reducing board area compared with four single or dual amplifier packages when a system requires four similar signal-processing channels. The principal features include a 1 MHz gain-bandwidth product, operation from 3 V to 36 V, low input bias current of 500 nA maximum, internal frequency compensation, and short-circuit-protected outputs. Its Class AB output stage is intended to provide a practical compromise between output drive capability and power dissipation compared with a pure Class A stage. The low-power operating point makes the device suitable for industrial control, instrumentation, sensor interfaces, and general analog signal-conditioning systems. MC3303DT differs from the closely related UA741-family architecture through its improved suitability for single-supply operation. It accepts a positive supply as high as 36 V or dual supplies of ±18 V, allowing operation from industrial 24 V rails when the total supply and input/output signal limits are observed. Internally compensated amplifiers simplify closed-loop gain selections when unity-gain stability is appropriate for the selected circuit and load. Typical uses include four-channel sensor amplification, differential input conditioning, active filtering, comparator-style threshold functions, and general instrumentation. The four amplifiers may also process separate channels or be combined in wider-bandwidth or higher-gain configurations where the resulting feedback network remains stable. Designers should account for input common-mode range, output swing, noise, and load capability at their intended supply voltage. A key design consideration is power: each amplifier contributes to total quiescent current, so four channels require more supply current than one or two channels. Input and output stability should be verified with the intended source impedance, load, supply decoupling, and feedback network. Input and output pin functions are published in the manufacturer datasheet, which should be checked against the final 14-pin PCB footprint. This page combines verified distributor data, manufacturer-document references, application guidance, package details, and same-footprint replacement considerations. It also identifies where current sourcing information remains unavailable so engineers can distinguish documented facts from data requiring confirmation before production release.

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MC3303N - Quad 30V 1MHz Op Amp | Texas Instruments
MC3303N

MC3303N - Quad 30V 1MHz Op Amp | Texas Instruments

The Texas Instruments MC3303N is a quad, low-power bipolar operational amplifier specified for a 30 V maximum supply and 1 MHz unity-gain bandwidth, housed in a 14-pin PDIP package. It provides four amplifiers in one package for general-purpose signal conditioning, transducer interfaces, analog summing, filtering, and feedback-control circuits. An operational amplifier is a voltage-amplified differential-input device whose external feedback network determines its behavior. MC3303 belongs to the operational-amplifier hierarchy: quad low-power op amp, bipolar linear amplifier, analog signal-conditioning IC, and semiconductor. Four independent amplifiers in one 14-pin package reduce board area compared with four separate single or dual amplifier packages, although users must preserve adequate spacing and decoupling for stable low-noise operation. Verified manufacturer information identifies the MC3303N as a standard general-purpose four-circuit amplifier in a 14-pin PDIP package, with a 30 V supply rating and 1 MHz gain-bandwidth product. The family is intended for single-supply or split-supply operation when the electrical limits specified by the manufacturer are met. Because the target uses a through-hole PDIP package, it also supports prototype repair and conventional leaded-board assembly rather than requiring a fine-pitch SMT footprint. The integrated amplifier count makes the device useful when a board needs multiple similar signal paths. Typical uses include four sensor channels, four analog-control loops, dual-channel buffering with spare amplifier capacity, or small active-filter sections. Designers should check common-mode range, output swing, input bias behavior, supply current, noise, slew rate, stability, and temperature limits against the manufacturer datasheet before fixing the operating conditions. The MC3303N should be placed near the supported decoupling network, with power and ground return paths arranged to minimize resistance and switching noise. Input and feedback components should be positioned to reduce parasitic capacitance at the high-frequency nodes. Do not infer exact bias-current, noise, slew-rate, common-mode, or temperature values from the search summaries; those parameters require the official manufacturer datasheet before release to production. This page combines verified product identity, source links, package information, application guidance, and explicitly marked data gaps. The comparison section is limited to candidates that the provided evidence supports as MC3303N equivalents; any claimed drop-in substitution must still be checked against pin assignment, electrical limits, supply requirements, and the intended operating conditions.

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MC3303PG - Quad 1 MHz Operational Amplifier | onsemi | 14-PDIP
MC3303PG

MC3303PG - Quad 1 MHz Operational Amplifier | onsemi | 14-PDIP

The onsemi MC3303PG is a four-channel general-purpose operational amplifier designed for single-supply operation, with a 3 V to 36 V supply range, true differential inputs, internal frequency compensation, and short-circuit protection. The device is packaged in a 14-pin through-hole DIP and is intended for low-cost analog signal conditioning, instrumentation, and general-purpose amplifier applications. Its unity-gain bandwidth is 1 MHz, while the specified minimum common-mode rejection ratio is 70 dB and the listed input offset voltage is 10 mV. An operational amplifier is an analog building block that compares two input voltages and amplifies their difference. The quad MC3303PG contains four amplifier sections in one package, allowing a circuit to perform multiple amplification, buffering, summing, or comparison functions while reducing board area. MC3303PG belongs to the operational-amplifier hierarchy within analog ICs and integrated circuits, and its true differential input architecture supports accurate sensing of small signals referenced to either ground or another bias point. The principal features include four amplifier channels, a 1 MHz gain-bandwidth product, operation from a single positive supply, Class AB output stages, true differential inputs, and low input bias current. Internal frequency compensation removes the need for external compensation networks in unity-gain applications. These characteristics make the MC3303PG practical for general-purpose designs where simplicity, tolerance of a wide supply range, and moderate operating bandwidth are more important than rail-to-rail output swing or very low offset voltage. MC3303PG is electrically similar to the widely used MC1741C-family architecture but adds advantages for single-supply operation. True differential inputs allow the amplifier to operate without artificial ground bias around the input signal. The four-channel arrangement supports signal amplifiers, active filters, transducers, sensor interfaces, audio preamplification, and industrial control modules. A wide 3 V to 36 V operating range also permits operation from both compact low-voltage systems and higher industrial supply rails. Typical uses include low-frequency sensor conditioning, audio input stages, active-filter sections, comparator-style threshold circuits, and general instrumentation. Because the amplifier is not rail-to-rail, input and output common-mode limits must be respected in low-voltage designs. For battery-powered equipment, verify input bias current and supply-current requirements against the system power budget. The DIP package also requires adequate through-hole spacing and mechanical clearance from adjacent heat-producing components. When designing around MC3303PG, begin with the manufacturer pin-description and electrical-characteristics tables, especially for input common-mode range, output swing, supply current, and stability. Place bypass capacitors close to the supply pins and route feedback components to minimize parasitic capacitance. Avoid operating the output near either supply rail unless the selected output-load condition remains within the specified swing range. This product page consolidates the manufacturer product information, distributor identification, package details, and practical engineering guidance for the MC3303PG. It also distinguishes the verified 14-pin DIP replacement candidates from broader functional equivalents so that PCB-level drop-in decisions are made with package and parameter checks rather than by device category alone.

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MC3303PT - Quad 1 MHz Low-Power Op Amp | STMicroelectronics
MC3303PT

MC3303PT - Quad 1 MHz Low-Power Op Amp | STMicroelectronics

The STMicroelectronics MC3303PT is a four-circuit, low-power bipolar operational amplifier with a 1 MHz gain-bandwidth product, a maximum supply voltage of 36 V, and a 14-pin TSSOP package. It is designed for general-purpose instrumentation, buffer, and amplifier applications that require four amplifiers in one package. The integrated quad arrangement reduces component count and simplifies PCB layout compared with four individual single amplifiers. An operational amplifier is a voltage-amplifying semiconductor in the amplifier IC category. It compares an input voltage with a feedback-defined reference voltage and drives its output to reduce the difference between them. The MC3303PT belongs to the broader low-power operational-amplifier family and provides four internally compensated amplifiers with true differential inputs in one package. The MC3303PT supports single-supply operation up to 36 V and dual-supply operation up to ±18 V. Its maximum input-bias current is 500 nA, which helps limit the current required from high-impedance signal sources. The device also provides short-circuit-protected outputs, an internally compensated Class AB output stage, and electrical characteristics described as similar to the widely used UA741. Each amplifier channel is internally compensated, allowing operation as a closed-loop amplifier without external compensation components. The Class AB output stage is intended to provide low crossover distortion while avoiding the continuous conduction characteristic of a purely class A output stage. The quad package is useful when four channels can share the same supply rails and ground reference. Typical applications include low-frequency instrumentation amplifiers, signal buffers, active filters, transducer interfaces, sensor signal conditioning, and general analog signal-processing chains. The 1 MHz gain-bandwidth product is suitable for moderate-bandwidth closed-loop stages rather than high-speed video or RF amplification. For new designs, verify the input common-mode range, output swing, input-offset voltage, input-bias current, and output-current capability in the manufacturer datasheet against the actual signal range. Decoupling capacitors should be placed close to the supply pins, and each unused amplifier channel should be configured according to the manufacturer's recommended stable-input arrangement rather than left floating. This product page organizes the confirmed MC3303PT characteristics, package information, application guidance, and sourcing path into an engineering-focused reference. It also distinguishes verified device attributes from parameters that require confirmation from the complete manufacturer datasheet before layout, simulation, or production release.

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MC3303PW - 30V 1MHz Quad Op Amp | Texas Instruments
MC3303PW

MC3303PW - 30V 1MHz Quad Op Amp | Texas Instruments

The Texas Instruments MC3303PW is a quad, general-purpose operational amplifier with a 30 V maximum supply rating, 1 MHz gain-bandwidth product, and four amplifiers in a 14-pin TSSOP package. It operates from single or dual supplies across a 3 V to 36 V total supply range, making it suitable for industrial control, instrumentation, sensor conditioning, and audio signal-chain designs. An operational amplifier, or op amp, is an analog integrated circuit that amplifies the difference between two input voltages. The MC3303 belongs to the linear amplifier hierarchy, where four independent amplifiers share one package. Each channel combines a true differential input stage, a Class AB output stage, internal frequency compensation, and short-circuit protection. These features simplify circuit design because external compensation networks are not required for typical closed-loop amplifier configurations. The MC3303's principal operating characteristics include a 1 MHz gain-bandwidth product, support for supply voltages from 3 V to 36 V, and an operating temperature range from -40 °C to 85 °C. Its low-power design is intended for general-purpose analog systems where four amplifier channels, compact packaging, and flexible supply operation are more important than rail-to-rail input or output capability. Input common-mode and output swing limits must be checked against the actual supply voltage before the circuit is finalized. The true differential input stage supports common-mode input operation while reducing output offset resulting from common input signals. A Class AB output stage supports bidirectional output current without the crossover distortion associated with complementary Class B stages. Internal frequency compensation makes the device convenient for unity-gain voltage followers, amplifiers, comparators, and basic active-filter blocks, although the stable operating range and output-drive requirements depend on the selected closed-loop gain. Typical uses include four-channel sensor amplification, industrial transducer interfaces, low-frequency audio mixing, buffered instrumentation, active filtering, and general voltage amplification. The 14-pin TSSOP package reduces board area compared with a larger through-hole package, while its exposed thermal behavior and power dissipation should be considered when all four channels operate continuously at high output voltage and current. For stable operation, place input and feedback components close to the relevant pins, route return currents directly to the ground connection, and avoid long high-impedance traces near the amplifier inputs. Use the manufacturer pin-description table to assign the four amplifier sections and power pins. Check input range, output swing, load current, supply headroom, and thermal rise together. This page also organizes pin compatibility, selection trade-offs, application guidance, and design checks into one engineering-focused reference.

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MC33071D - 44V Single-Supply Op Amp, 4.5MHz GBW | onsemi
MC33071D

MC33071D - 44V Single-Supply Op Amp, 4.5MHz GBW | onsemi

The onsemi MC33071D is a single-supply operational amplifier with a 3.0 V to 44 V operating supply range, a 4.5 MHz gain-bandwidth product and a 13 V/µs slew rate, housed in an 8-pin SOIC-8 surface-mount package. It is a single amplifier in the MC33071/72/74 and MC34071/72/74 family, so a dual or quad version is available when more channels are needed on the same board. An operational amplifier, or op amp, is a high-gain differential amplifier whose inverting and non-inverting inputs are compared and whose output is driven to correct the difference between them. In the product-type hierarchy, an op amp belongs to the amplifier IC class, then to analog integrated circuits, then to the wider semiconductor family. Because the MC33071D is built on quality bipolar fabrication with innovative design concepts rather than JFET input devices, it combines wide signal swing capability with fast settling behavior over an unusually wide supply range. Key features of this device include the wide 3.0 V to 44 V single-supply capability, 4.5 MHz gain-bandwidth product, 13 V/µs slew rate, and low input offset voltage of 3 mV typical (5 mV maximum per the distributor listing). The amplifier operates from a -40 °C to +85 °C ambient temperature range and is specified for standard (general-purpose) instrumentation, buffer and op-amp applications. Technically, the MC33071D combines a wide internal common-mode and output voltage range with bipolar input and output stages, which allows the output to swing close to the supply rails on low-supply designs while still tolerating industrial rails well above 44 V in feedback loops and sensing stages. The 4.5 MHz bandwidth combined with 13 V/µs slew rate means a 10 V output step settles in roughly a microsecond, fast enough for closed-loop control loops at audio and low-frequency instrumentation bandwidths. Typical uses include industrial sensor signal conditioning, precision current-sense and voltage-feedback networks in power supplies, low-frequency audio driver stages, transducer and bridge preamplifiers, and general-purpose buffering where the supply rail can exceed the 18 V limit of typical 5 V single-supply op amps. When designing with this part, remember that the wide supply rating is a maximum, not a target. Keep input and output common-mode voltages inside the linear input range, place a 0.1 µF ceramic bypass capacitor at each supply pin with additional bulk capacitance nearby, and check output swing headroom at the highest ambient temperature. This page consolidates supply-range, bandwidth, slew-rate and offset specifications together with drop-in alternatives and practical layout guidance, so you can select the amplifier and the surrounding passive network without rebuilding the design from scratch.

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MC33071P - 3-44V Single Operational Amplifier | onsemi
MC33071P

MC33071P - 3-44V Single Operational Amplifier | onsemi

The onsemi MC33071P is a single general-purpose operational amplifier designed for single-supply operation from 3.0 V to 44 V. It provides a maximum input offset voltage of 5 mV, a gain-bandwidth product of 4.5 MHz, and supply current of 1.9 mA in an 8-pin PDIP package. The device is suited to industrial instrumentation, sensor conditioning, power-control loops, and signal-processing systems requiring wide supply-voltage tolerance. An operational amplifier is an analog integrated circuit that uses high open-loop gain to amplify the difference between two input voltages. The MC33071 belongs to the precision operational-amplifier hierarchy, combining a wide common-mode input range, single-supply operation, and general-purpose signal handling in one package. Its ability to operate from a 3.0 V supply supports modern low-voltage systems, while the 44 V upper limit accommodates higher-voltage industrial rails. Key electrical characteristics include a 5 mV maximum input offset voltage and a 4.5 MHz gain-bandwidth product. These specifications make the amplifier useful for low-level AC signal paths where input offset can influence accuracy and where bandwidth determines the range of signals that can be amplified without excessive gain reduction. The 1.9 mA supply current supports power-conscious designs while retaining useful operating speed. The MC33071P uses a conventional bipolar operational-amplifier architecture. In a typical non-inverting configuration, the input signal is applied to the non-inverting terminal and feedback is returned to the inverting terminal. Its broad supply range allows operation from unregulated or industrial supply sources, although input common-mode and output-swing limits must be respected at each supply voltage. Typical uses include low-level sensor amplification, transducer buffering, industrial control loops, audio preamplification, and general analog signal conditioning. It can also form active filters and waveform-shaping circuits when the required gain and bandwidth remain within the device's operating limits. Bypass capacitors placed close to the supply pins help reduce noise and stabilize operation in practical layouts. The primary design trade-off is that a general-purpose bipolar amplifier does not provide the very low offset, low power, or rail-to-rail output performance of specialized modern amplifier families. Confirm common-mode range, output swing, input bias current, and stability requirements against the actual supply voltage before using it in precision or battery-powered systems. This product record combines the MC33071P electrical characteristics, package information, verified drop-in candidates, application guidance, and PCB design considerations. The comparison and selection material helps engineers distinguish same-family and cross-brand options without overlooking differences in supply range, bandwidth, offset voltage, or package.

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MC33077P - 37 MHz Low-Noise Dual Op Amp | onsemi
MC33077P

MC33077P - 37 MHz Low-Noise Dual Op Amp | onsemi

The onsemi MC33077P is a dual, general-purpose operational amplifier built with precision bipolar design techniques, providing a 37 MHz gain-bandwidth product and an 11 V/µs slew rate in an 8-pin PDIP package. It is intended for instrumentation, signal-conditioning, and amplification applications that require low noise, high frequency response, and precise channel matching. An operational amplifier, or op amp, is an analog active device that amplifies the difference between two input voltages. The MC33077P contains two independent amplifier circuits in one monolithic package, making it a dual op amp. Within the product hierarchy, it belongs to the operational amplifier and analog amplifier categories, where it provides a higher-speed alternative to general-purpose precision amplifiers. The MC33077 family uses innovative bipolar construction, analog resistor trimming, and dual-doublet frequency compensation. Analog trimming is used to obtain low input offset voltages, while the precision-matching approach supports closely matched amplifier channels. These techniques support applications in measurement systems, audio and communication circuits, active filters, and low-level analog signal chains. Verified distributor information identifies the MC33077P as a 2-circuit, 8-PDIP general-purpose amplifier with 37 MHz bandwidth. A separate distributor listing reports an 11 V/µs slew rate, indicating that the device can support signal transitions well beyond audio frequencies when the surrounding circuit permits. Exact noise density, input bias current, input offset voltage, supply-current, and common-mode limits were not included in the supplied verification data and must be confirmed against the manufacturer datasheet before design release. Typical uses include instrumentation preamplification, active filtering, audio signal conditioning, and general high-frequency analog processing. In a typical signal chain, the device would follow a low-amplitude sensor or filter stage and drive a higher-impedance ADC input, buffer, or measurement front end. Because the amplifiers are internally matched, dual-channel differential or ratiometric measurements are practical when board layout and resistor matching are controlled. The primary design consideration is ensuring that the surrounding circuit does not degrade the amplifier's noise and accuracy performance. Place decoupling capacitors close to the supply pins, keep feedback-loop routing short, and avoid parasitic capacitance on high-impedance input nodes. Confirm the exact pinout, supply range, noise specifications, input common-mode limits, and output-current capability in the onsemi MC33077 datasheet before layout release.

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MC33078D - Dual Low-Noise 15MHz Op Amp | Texas Instruments
MC33078D

MC33078D - Dual Low-Noise 15MHz Op Amp | Texas Instruments

The Texas Instruments MC33078D is a bipolar dual operational amplifier with two independent amplifiers, 4.5 nV/√Hz input-voltage noise, a 15 MHz gain-bandwidth product, and a 7 V/µs slew rate. The device is supplied in an 8-pin SOIC package and is intended for audio and data-signal applications operating from -40 °C to 85 °C. A dual operational amplifier combines two amplifiers in one package, providing a practical path from analog signal conditioning to broader voltage-amplifier and analog IC functions. Each channel can amplify, buffer, filter, or drive a defined analog signal when used with suitable external components. MC33078D is particularly useful where low noise, wide bandwidth, and fast large-signal response are more important than the very low power consumption associated with CMOS-only amplifiers. The MC33078D uses bipolar technology, which supports low-noise operation and audio-focused performance. Its 4.5 nV/√Hz input-noise figure is suited to high-fidelity audio preamplification, microphone-stage signal conditioning, and low-level instrumentation. A 15 MHz gain-bandwidth product supports higher closed-loop bandwidth than slower general-purpose precision amplifiers, while the 7 V/µs slew rate provides improved ability to reproduce large-amplitude signals without excessive distortion. Two independent channels in one package reduce board area for balanced, differential, or multi-stage analog circuits. The 8-pin SOIC (D) package uses a familiar surface-mount footprint and supports automated assembly. Because its dual topology is not rail-to-rail by specification, applications must account for the allowable input and output voltage ranges when using single-supply or dual-supply configurations. Decoupling and stable feedback-network design remain essential for low-noise performance. Typical uses include stereo audio input amplification, active equalization, low-level sensor conditioning, line-stage amplification, and mixed-signal filtering. The two channels may also implement separate gain blocks, buffers, or active filters when the required common-mode range and output swing fit the application. In audio designs, low-noise operation helps preserve quiet signal paths, while the 15 MHz bandwidth and 7 V/µs slew rate provide headroom for detailed waveform reproduction. When laying out the circuit, place the power-supply bypass capacitor close to the supply pins and keep feedback resistors and input components compact to minimize parasitic capacitance and noise pickup. Verify gain-bandwidth and stability requirements with the actual noise-gain network. Single-supply operation may require biasing or AC coupling if the source cannot reach ground, so confirm the input common-mode range before finalizing the schematic. This product page combines manufacturer specifications, package information, practical analog-design guidance, and verified drop-in alternatives. It also highlights the exact differences between same-manufacturer and cross-manufacturer options, helping engineers compare compatibility, bandwidth, noise, temperature range, and application fit before making a board-level replacement decision.

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MC33078N - Dual Low-Noise 15MHz Op Amp | STMicroelectronics
MC33078N

MC33078N - Dual Low-Noise 15MHz Op Amp | STMicroelectronics

STMicroelectronics MC33078N is a monolithic dual bipolar operational amplifier optimized for low-noise audio and data-signal applications. The device provides two amplifiers, 4.5 nV/√Hz voltage-noise density, a 15 MHz gain-bandwidth product, and a 7 V/µs slew rate in an 8-pin Mini DIP package. It supports both single-supply and dual-supply operation, allowing its dual amplifier to process audio channels or implement gain, filtering, buffering, and signal-conditioning functions. An operational amplifier is a high-gain differential amplifier whose inverting and non-inverting inputs are compared to produce an amplified output. The bipolar input stage of the MC33078N combines low voltage noise with a wide gain-bandwidth product and high slew rate. In the broader semiconductor hierarchy, the MC33078N is an analog amplifier IC, more specifically a dual low-noise operational amplifier used in audio, instrumentation, and general-purpose signal-processing circuits. The principal performance features include 4.5 nV/√Hz input-voltage noise, 15 MHz gain-bandwidth product, and 7 V/µs slew rate. Its two amplifier channels provide design economy in stereo audio preamplifiers, active filters, line drivers, and instrumentation. The 8-pin Mini DIP package is also suitable for through-hole construction and prototyping where dual-line access and straightforward manual assembly are useful. The bipolar architecture provides the fast large-signal response needed for audio signals while retaining low noise for microphone-level and line-level work. The 15 MHz gain-bandwidth product supports wider closed-loop bandwidth than a low-frequency general-purpose amplifier, while the 7 V/µs slew rate helps the device reproduce large-amplitude waveforms without excessive distortion. Supply topology determines the usable common-mode and output-voltage ranges, so single- and dual-supply circuits require different biasing arrangements. Typical applications include stereo audio preamplification, active crossover and equalization networks, microphone preamplifiers, line-level buffers, active filters, sensor signal conditioning, and general dual-channel analog processing. In stereo equipment, the two channels can process left and right signals independently, reducing component count and helping maintain matched channel layouts. For new PCB designs, place the decoupling capacitor close to the supply pin and connect the exposed return path directly to the ground plane. When replacing an existing MC33078 footprint, verify the exact power-supply range, common-mode limits, output swing, noise characteristics, and stability requirements rather than relying only on the DIP-8 outline. This page combines manufacturer specifications, cross-reference information, practical application guidance, and package-aware replacement analysis to support faster engineering evaluation and sourcing.

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MC33078P - Dual 16MHz Low-Noise Op Amp | Texas Instruments
MC33078P

MC33078P - Dual 16MHz Low-Noise Op Amp | Texas Instruments

The Texas Instruments MC33078P is a bipolar dual operational amplifier with 16 MHz gain-bandwidth product, a 7 V/µs slew rate, and 4.5 nV/√Hz input voltage noise, supplied in an 8-pin PDIP package. The device supports single-supply and dual-supply operation over a voltage range of ±5 V to ±18 V and is intended for quality audio and data-signal processing applications. An operational amplifier is an analog signal-conditioning IC that uses high-gain differential amplification to increase the voltage difference between two inputs. In the wider hierarchy, an op amp belongs to amplifiers, analog integrated circuits, and signal-chain conditioning devices. The MC33078P contains two independent amplifiers in one package, allowing one package to serve two channels while reducing board area and simplifying dual-audio or dual-data-signal designs. The MC33078/9 family uses bipolar transistor technology with high-frequency PNP input transistors. This architecture provides low input voltage noise, high gain-bandwidth product, high slew rate, low total harmonic distortion of 0.002%, and a low input offset voltage of 0.15 mV. These characteristics make the amplifier suitable for audio preamplification, filtering, instrumentation, and general-purpose analog signal conditioning where both small-signal fidelity and bandwidth are important. The two channels operate independently from the same supply pins. Its 16 MHz gain-bandwidth product allows useful closed-loop bandwidth well below the unity-gain frequency, while the 7 V/µs slew rate supports faster large-signal transitions than many general-purpose bipolar op amps. Noise and distortion figures should therefore be evaluated in the same signal bandwidth and output amplitude used in the target circuit; headline values do not describe complete system performance by themselves. Typical uses include microphone and line-level audio amplification, active filters, analog instrumentation, low-level sensor conditioning, and dual-channel signal processing. The 8-pin PDIP package is suitable for through-hole construction, prototyping, repair work, and applications where the larger package is acceptable. Local bypass capacitors close to the supply pins remain important for stable operation and low-noise performance. The principal design trade-off is package size rather than electrical capability: PDIP-8 is easy to install manually but occupies more PCB area than surface-mount dual-op-amp packages. Designers should preserve adequate output-current headroom for capacitive loads, verify stable operation with the selected feedback network and load, and avoid assuming that low-noise input devices are interchangeable with FET-input amplifiers because bias-current and distortion behavior differ. This page consolidates the verified manufacturer specifications, distributor availability references, and engineering-focused selection guidance for MC33078P. It also distinguishes documented MC33078-family options from true pin-compatible replacements, helping engineers avoid treating merely similar amplifiers as drop-in substitutes.

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