Interface ICs
Subcategories
Products (3,400+)
MC3437L - Hex Bus Receiver with Input Hysteresis | Motorola
The Motorola MC3437L is a six-channel hexadecimal bus receiver with input hysteresis, supplied in a 16-pin CDIP package. The verified distributor listings identify the device as a 0/6 receiver and indicate a listed unit price of $2.6678 at LCSC as of 2026-10-23. The receiver is intended for digital bus-interface applications where noise immunity and signal conditioning are important. A bus receiver is an interface IC that converts a digital logic signal into a cleaner, standardized receiver output. The MC3437L belongs to the receiver and transceiver category, providing six receiver channels rather than a general-purpose analog function. Input hysteresis creates a defined transition region between low and high input levels, helping prevent output chatter when a noisy or slowly changing signal crosses the logic threshold. The verified search data specifically identifies the MC3437 as a Hex Bus Receiver with Input Hysteresis. The MC3437L ordering variant is shown by DigiKey as a 0/6 Receiver in a 16-CDIP package. The available source data does not provide detailed input thresholds, propagation delays, supply-voltage limits, output levels, temperature ratings, or absolute maximum ratings, so those values are not inferred here. Typical uses include digital control buses, computer peripheral interfaces, industrial equipment, communications equipment, and legacy systems where a six-channel receiver is useful. The CDIP package supports through-hole PCB assembly and may be preferred for repair, prototyping, and systems that use conventional DIP-compatible footprints. Actual signal integrity and system compatibility require checking the original manufacturer datasheet and the host bus voltage and timing. When replacing MC3437L, verify the exact pinout, logic polarity, supply requirements, propagation delay, and input thresholds before substitution. Do not assume that a similarly named transceiver or receiver is pin-compatible. The available source data does not establish lifecycle status, detailed electrical ratings, or a verified five-part drop-in replacement set.
MC3486D - 4-Channel RS-422/423 Receiver | Texas Instruments
The Texas Instruments MC3486D is a monolithic quadruple differential line receiver with four independent differential inputs, TTL-compatible 3-state outputs, and single 5 V operation in a 16-pin SOIC package. It is designed for ANSI TIA/EIA-422-B and TIA/EIA-423-B and ITU V.10 and V.11 interfaces. The four receivers convert balanced differential line signals into digital logic levels, making the device suitable for multi-channel industrial, communications, and data-acquisition systems. A differential line receiver is an interface IC that rejects common-mode noise and extracts a logic decision from two complementary conductors. The receiver belongs to the line-interface hierarchy: differential receiver → RS-422/RS-423 interface IC → digital interface IC → semiconductor. This category is used where transmitted logic signals must cross cables or noisy interconnects without allowing voltage offsets and interference to corrupt the receiving logic. The MC3486 provides four independent channels, a shared enable control for the output states, and TTL-compatible outputs. Its 3-state capability permits each receiver output to enter a high-impedance state when the interface is not being selected. Fast transition times support reliable signaling, while the single 5 V supply simplifies connection to conventional TTL and CMOS-compatible system logic. The MC3486D is particularly suited to balanced communication links using RS-422 or RS-423 signaling. It can terminate long or electrically noisy interconnects at the receiving end, while its differential input structure provides noise immunity compared with a single-ended receiver. The device is also intended for use with the MC3487 quadruple differential line driver, creating matched transmit and receive channels. Typical applications include industrial control links, instrumentation interfaces, multidrop communication systems, test equipment, and embedded systems requiring several differential inputs. Designers should provide the termination and biasing values required by the selected line standard, respect the enable polarity and output timing, and validate cable length and topology against the system’s signal-integrity requirements. This page summarizes verified manufacturer information and distributor presence, while clearly separating unavailable electrical details. The MC3486D’s main engineering value is its combination of four differential channels, 3-state TTL outputs, standards-oriented RS-422/RS-423 positioning, and a compact 16-pin surface-mount package.
MC3486DR - 4-Channel RS-422/423 Receiver | Texas Instruments (Tape & Reel)
The Texas Instruments MC3486DR is a monolithic quadruple differential line receiver with four independent differential inputs, TTL-compatible 3-state outputs, and single 5 V operation in a 16-pin SOIC package. It is designed for ANSI TIA/EIA-422-B and TIA/EIA-423-B and ITU V.10 and V.11 interfaces. The four receivers convert balanced differential line signals into digital logic levels, making the device suitable for multi-channel industrial, communications, and data-acquisition systems. A differential line receiver is an interface IC that rejects common-mode noise and extracts a logic decision from two complementary conductors. The receiver belongs to the line-interface hierarchy: differential receiver → RS-422/RS-423 interface IC → digital interface IC → semiconductor. This category is used where transmitted logic signals must cross cables or noisy interconnects without allowing voltage offsets and interference to corrupt the receiving logic. The MC3486 provides four independent channels, a shared enable control for the output states, and TTL-compatible outputs. Its 3-state capability permits each receiver output to enter a high-impedance state when the interface is not being selected. Fast transition times support reliable signaling, while the single 5 V supply simplifies connection to conventional TTL and CMOS-compatible system logic. The MC3486DR is particularly suited to balanced communication links using RS-422 or RS-423 signaling. It can terminate long or electrically noisy interconnects at the receiving end, while its differential input structure provides noise immunity compared with a single-ended receiver. The device is also intended for use with the MC3487 quadruple differential line driver, creating matched transmit and receive channels. Typical applications include industrial control links, instrumentation interfaces, multidrop communication systems, test equipment, and embedded systems requiring several differential inputs. Designers should provide the termination and biasing values required by the selected line standard, respect the enable polarity and output timing, and validate cable length and topology against the system’s signal-integrity requirements. This page summarizes verified manufacturer information and distributor presence, while clearly separating unavailable electrical details. The MC3486DR’s main engineering value is its combination of four differential channels, 3-state TTL outputs, standards-oriented RS-422/RS-423 positioning, and a compact 16-pin surface-mount package.
MC3486N - 4-Channel RS-422/423 Receiver | Texas Instruments
The Texas Instruments MC3486N is a monolithic quadruple differential line receiver with four independent RS-422/RS-423 channels, TTL-compatible outputs, and 3-state output capability in a 16-pin PDIP package. According to the manufacturer product page, the device is designed for ANSI TIA/EIA-422-B and TIA/EIA-423-B operation, with compatibility for ITU V.10 and V.11. The MC3486 operates from a single 5 V supply and is characterized for operation from 0°C to 70°C. It is supplied in a 16-pin package. A differential line receiver is an interface-circuit type that converts balanced or differential signaling into a single-ended digital signal. It belongs to the broader hierarchy of transceiver interface ICs, communication interfaces, logic-level conversion devices, and semiconductors. In an RS-422 system, the receiver helps recover a reliable logic state from a differential line while rejecting common-mode noise. The MC3486 is intended for systems using the complementary MC3487 quadruple differential line driver. The principal features visible in the verified manufacturer information are four independent differential-input receivers, TTL-compatible outputs, and a high-impedance output state on each channel. The 3-state outputs support shared-bus arrangements when multiple receivers or bus drivers need to be isolated. The single 5 V supply simplifies interface design, while the 0°C to 70°C characterization targets commercial-temperature equipment. The MC3486 is suitable for industrial control links, multi-channel data acquisition, instrumentation, computer peripherals, and embedded communication interfaces where balanced differential signaling is preferred over single-ended interconnects. Its four channels allow several receiver functions to share one IC, reducing board area and simplifying firmware or system configuration. The device is intended to be used with suitable line drivers and properly terminated transmission lines. The main design consideration is ensuring that the selected companion driver, cable, termination, grounding, and logic interface match the system requirements. The manufacturer states that the MC3486 is designed for optimum performance with the MC3487 quadruple differential line driver. Review the official datasheet for electrical limits, enable or output-control details, and application-specific timing before finalizing a circuit. This page combines the verified manufacturer specifications, distributor package information, source URLs, and practical interface-selection guidance. It is intended to help engineers identify the correct device, compare compatible alternatives, and plan a robust differential-interface implementation.
MC3486NS - Quad Differential RS-422/423 Receiver | Texas Instruments
The Texas Instruments MC3486NS is a monolithic quadruple differential line receiver with four independent differential inputs, TTL-compatible outputs, and 3-state output capability in a 16-pin SOIC package. It operates from a single 5 V supply, is designed around TIA/EIA-422-B and TIA/EIA-423-B signaling, and supports the ITU V.10 and V.11 recommendations. The receiver is intended for industrial-control, data-communication, and instrumentation interfaces where multiple balanced lines must be converted into digital logic levels. A differential line receiver is an interface IC that compares two complementary conductors, rejects common-mode voltage and noise, and converts the resulting logic state into a single-ended digital output. In the signal-processing hierarchy, the MC3486NS belongs to the receiver family within line-driver and receiver interface ICs, which ultimately fall under interface ICs and semiconductors. Its four channels allow one package to replace four discrete differential receiver sections while preserving a standardized balanced-line interface. Key features include four differential receivers, TTL-compatible outputs, selectable 3-state output operation, operation from a single 5 V supply, and compatibility with TIA/EIA-422-B, TIA/EIA-423-B, ITU V.10, and ITU V.11 requirements. The 3-state outputs allow several devices to share a bus when the system controller can place individual receivers in a high-impedance state. The 16-pin surface-mount package supports compact circuit layouts while preserving conventional through-hole-equivalent pin organization. The MC3486 is designed for optimum operation with the MC3487 quadruple differential line driver, providing a complete four-channel transmit-and-receive solution for balanced communications. Its differential input architecture is valuable where cables may pick up noise or where logic devices share a common ground reference. The receiver translates that differential information into TTL-compatible logic suitable for programmable logic controllers, microprocessors, counters, and other digital control systems. Typical uses include industrial automation equipment, RS-422-compatible control links, data acquisition systems, test and measurement instruments, and embedded control equipment requiring several differential inputs. In a four-wire RS-422 interface, the MC3486NS can receive four balanced signals while a corresponding MC3487 family driver transmits the opposite-direction signals. This arrangement supports full-duplex communication over a cable carrying multiple data and control lines. The principal design consideration is correct enable and termination management. The available verified information identifies 3-state outputs but does not provide the detailed enable truth table or pin-level values, so those items must be confirmed in the manufacturer datasheet before implementation. Differential-pair routing, solid grounding, and appropriate cable termination are also essential because receiver performance depends on the physical signal path as well as the IC. This page combines verified manufacturer and distributor information with package guidance, application-oriented analysis, and a drop-in cross-reference assessment. It also distinguishes confirmed substitutes from parts that are only functionally related, helping engineers avoid selecting a driver or a mechanically incompatible package as a receiver replacement.
MC3486NSR - Quad Differential RS-422/423 Receiver | Texas Instruments (Tape & Reel)
The Texas Instruments MC3486NSR is a monolithic quadruple differential line receiver with four independent differential inputs, TTL-compatible outputs, and 3-state output capability in a 16-pin SOIC package. It operates from a single 5 V supply, is designed around TIA/EIA-422-B and TIA/EIA-423-B signaling, and supports the ITU V.10 and V.11 recommendations. The receiver is intended for industrial-control, data-communication, and instrumentation interfaces where multiple balanced lines must be converted into digital logic levels. A differential line receiver is an interface IC that compares two complementary conductors, rejects common-mode voltage and noise, and converts the resulting logic state into a single-ended digital output. In the signal-processing hierarchy, the MC3486NSR belongs to the receiver family within line-driver and receiver interface ICs, which ultimately fall under interface ICs and semiconductors. Its four channels allow one package to replace four discrete differential receiver sections while preserving a standardized balanced-line interface. Key features include four differential receivers, TTL-compatible outputs, selectable 3-state output operation, operation from a single 5 V supply, and compatibility with TIA/EIA-422-B, TIA/EIA-423-B, ITU V.10, and ITU V.11 requirements. The 3-state outputs allow several devices to share a bus when the system controller can place individual receivers in a high-impedance state. The 16-pin surface-mount package supports compact circuit layouts while preserving conventional through-hole-equivalent pin organization. The MC3486 is designed for optimum operation with the MC3487 quadruple differential line driver, providing a complete four-channel transmit-and-receive solution for balanced communications. Its differential input architecture is valuable where cables may pick up noise or where logic devices share a common ground reference. The receiver translates that differential information into TTL-compatible logic suitable for programmable logic controllers, microprocessors, counters, and other digital control systems. Typical uses include industrial automation equipment, RS-422-compatible control links, data acquisition systems, test and measurement instruments, and embedded control equipment requiring several differential inputs. In a four-wire RS-422 interface, the MC3486NSR can receive four balanced signals while a corresponding MC3487 family driver transmits the opposite-direction signals. This arrangement supports full-duplex communication over a cable carrying multiple data and control lines. The principal design consideration is correct enable and termination management. The available verified information identifies 3-state outputs but does not provide the detailed enable truth table or pin-level values, so those items must be confirmed in the manufacturer datasheet before implementation. Differential-pair routing, solid grounding, and appropriate cable termination are also essential because receiver performance depends on the physical signal path as well as the IC. This page combines verified manufacturer and distributor information with package guidance, application-oriented analysis, and a drop-in cross-reference assessment. It also distinguishes confirmed substitutes from parts that are only functionally related, helping engineers avoid selecting a driver or a mechanically incompatible package as a receiver replacement.
MC3487D - 4-Channel RS-422 Driver | Texas Instruments | 5V
The Texas Instruments MC3487D is a quadruple differential line driver with four independent drivers, a 5 V single supply, and a 16-pin SOIC package. Its differential outputs meet ANSI TIA/EIA-422-B and ITU Recommendation V.11 requirements, while the tri-state outputs permit a high-impedance state for bus management. Each channel uses a TTL-compatible buffered input to reduce loading, making the device suitable for RS-422 point-to-point and multidrop communications. A differential line driver is an interface IC that converts a single-ended logic signal into a balanced pair of differential signals. In the hierarchy of electronic components, it belongs to the interface IC family, within communication and transceiver devices. Differential signaling improves noise immunity by rejecting common-mode noise and allows reliable data transmission over longer cable runs than ordinary single-ended digital logic. The MC3487D provides four driver channels rather than a full transceiver, so it does not receive differential data. The output-enable function controls the output state, allowing connected drivers to be disabled when they are not active. This is useful in systems that share a bus or require controlled output states. Power-up and power-down protection are also identified in the manufacturer documentation. Typical uses include industrial RS-422 links, data acquisition systems, test equipment, instrumentation, and multi-channel communication links. The 5 V supply operation simplifies interface design in legacy and industrial systems where the host logic uses a 5 V rail. Because it is a driver-only device, the system designer must provide the receiving circuitry and define cable termination, grounding, and enable-control behavior. The main design considerations are signal integrity, cable length, supply decoupling, and output-state control. Differential pairs should be routed with consistent geometry and appropriate grounding. The output-enable signals should be controlled during reset so that multiple channels do not contend on a shared bus. The device is intended for surface-mount assembly in the 16-pin SOIC package.
MC3487DE4 - Quad RS-422 Line Driver | Texas Instruments
Texas Instruments MC3487DE4 is a quadruple differential line driver with four independent outputs, a single 5 V supply, and a 16-pin SOIC package. Each channel receives a TTL-compatible input and produces a balanced differential signal designed to meet ANSI TIA/EIA-422-B and ITU Recommendation V.11 requirements. The MC3487DE4 is suitable for industrial control, instrumentation, data acquisition, telecom, and test-equipment systems that transmit digital signals reliably over longer cable distances than single-ended logic permits. A differential line driver is an interface IC that converts one logic input into two complementary outputs. This arrangement rejects much of the common-mode noise picked up by a cable, improving signal integrity in industrial environments. The MC3487 belongs to the broader interface-IC hierarchy: line driver → differential line driver → digital interface IC → semiconductor. Its four channels allow one package to drive four separate balanced links while sharing a common supply and ground reference. Key features include four independent differential drivers, TTL-compatible buffered inputs, three-state output capability, fast transition times, and high-impedance inputs. Power-up and power-down protection helps prevent uncontrolled driver activity during supply changes. The buffered inputs reduce input loading, allowing the device to operate reliably with standard TTL and CMOS control logic when voltage-level compatibility is confirmed in the system design. Technically, the MC3487 is a single-supply RS-422-focused transmitter rather than a complete bidirectional transceiver. It does not include receiver channels. Systems requiring two-way communication normally combine this driver with a separate differential receiver, such as a compatible RS-422 receiver IC. The differential outputs should be routed as a matched pair to preserve signal polarity and minimize common-mode conversion along the cable. Typical applications include RS-422 test equipment, industrial automation links, programmable logic controller interfaces, data-acquisition systems, servo or motor-control signaling, point-to-point computer peripherals, and instrumentation. Designers should use twisted-pair wiring, provide a stable 5 V supply, connect the common ground reference, and account for the voltage drop and noise margin of the selected cable length. The principal design consideration is ensuring that every connected receiver recognizes the driver’s differential output levels and that unused outputs are handled according to the manufacturer’s recommendations. PCB placement should minimize the distance between the interface connector and driver outputs, while avoiding noisy switching-current paths near the differential traces. This page combines device specifications, sourcing guidance, drop-in alternatives, and practical interface-design notes for engineers evaluating the MC3487DE4.
MC3487DR - 4-Channel RS-422 Driver | Texas Instruments | 5V (Tape & Reel)
The Texas Instruments MC3487DR is a quadruple differential line driver with four independent drivers, a 5 V single supply, and a 16-pin SOIC package. Its differential outputs meet ANSI TIA/EIA-422-B and ITU Recommendation V.11 requirements, while the tri-state outputs permit a high-impedance state for bus management. Each channel uses a TTL-compatible buffered input to reduce loading, making the device suitable for RS-422 point-to-point and multidrop communications. A differential line driver is an interface IC that converts a single-ended logic signal into a balanced pair of differential signals. In the hierarchy of electronic components, it belongs to the interface IC family, within communication and transceiver devices. Differential signaling improves noise immunity by rejecting common-mode noise and allows reliable data transmission over longer cable runs than ordinary single-ended digital logic. The MC3487DR provides four driver channels rather than a full transceiver, so it does not receive differential data. The output-enable function controls the output state, allowing connected drivers to be disabled when they are not active. This is useful in systems that share a bus or require controlled output states. Power-up and power-down protection are also identified in the manufacturer documentation. Typical uses include industrial RS-422 links, data acquisition systems, test equipment, instrumentation, and multi-channel communication links. The 5 V supply operation simplifies interface design in legacy and industrial systems where the host logic uses a 5 V rail. Because it is a driver-only device, the system designer must provide the receiving circuitry and define cable termination, grounding, and enable-control behavior. The main design considerations are signal integrity, cable length, supply decoupling, and output-state control. Differential pairs should be routed with consistent geometry and appropriate grounding. The output-enable signals should be controlled during reset so that multiple channels do not contend on a shared bus. The device is intended for surface-mount assembly in the 16-pin SOIC package.
MC3487J - Quad Differential Driver, 5V, DIP-16 | Texas Instruments
The Texas Instruments MC3487J is a quadruple differential line driver operating from one 5 V supply and packaged in a 16-pin dual-in-line package. It provides four independent differential outputs for ANSI TIA/EIA-422-B and ITU Recommendation V.11 interfaces. Each channel uses a buffered TTL-compatible input to reduce loading, while 3-state outputs support shared-bus control. The MC3487J is a through-hole military-temperature-grade DIP-16 option. A differential line driver is an interface IC that converts a TTL-compatible logic signal into a balanced pair of differential signals. The balanced topology helps reject common-mode noise and supports reliable point-to-point data transmission. In the interface hierarchy, the MC3487J belongs to the line-driver family and implements the transmit side of a differential communications link. Its intended counterpart is the MC3486 quadruple line receiver. The MC3487 contains four independent channels, a single 5 V supply architecture, high-impedance inputs, and 3-state outputs. The official product description identifies these features as supporting reduced input current and minimized loading. Power-up and power-down protection are also listed in the device literature. The verified distributor data identifies the MC3487J as a military-temperature-grade, through-hole, 16-terminal rectangular DIP, but does not provide all timing, output-current, or temperature limits. Each output is intended for a balanced differential connection rather than a single-ended RS-232-style signal. Because outputs can enter a high-impedance state, the device can participate in bus-direction or driver-enable control when the system requires it. Designers must still account for the differential network, termination strategy, unused inputs, and the voltage levels required by the connected receiver. Exact propagation delay, transition time, output impedance, and common-mode limits require the manufacturer datasheet. Typical uses include industrial instrumentation, computer peripherals, point-to-point data links, test equipment, and legacy communications interfaces. In a transmitter design, the MC3487J sits between a TTL/CMOS-compatible control circuit and a balanced cable or board trace. The receiving end can use an MC3486 or another compatible differential receiver. Keep the driver close enough to the connector or transceiver boundary that unbalanced stub lengths remain short and the cable transition is clean. The principal design consideration is verifying the 5 V rail and every connected differential input against the device electrical limits before layout release. Decoupling should follow the manufacturer guidance, and unused inputs must not be left in an undefined state if they can affect system behavior. The MC3487J is appropriate when a legacy, balanced, TTL-driven interface is required and a through-hole DIP-16 assembly is preferred over a surface-mount package. This page consolidates the verified Texas Instruments product description, manufacturer datasheet link, package information, distributor price indication, and application-oriented design guidance. It also separates verified facts from parameters that still require confirmation in the datasheet, helping engineers make an evidence-based sourcing decision.
MC3487N - 4-Channel RS-422 Differential Driver | Texas Instruments
The Texas Instruments MC3487N is a four-channel differential line driver operating from a single 5 V supply in a 16-pin dual-in-line package. It provides one differential driver per channel, TTL-compatible buffered inputs, and three-state outputs for interface bus control. The device is designed to meet ANSI TIA/EIA-422-B and ITU Recommendation V.11 requirements, making it suitable for point-to-point and multidrop digital communication links. Its bipolar implementation and high-impedance inputs help reduce loading on source logic. The MC3487 is intended for use with compatible differential receivers such as the MC3486 family, while its four independent channels allow several differential signals to be transmitted on one board. The 16-pin PDIP package supports conventional through-hole PCB assembly and straightforward socket or leaded prototyping. An RS-422 differential line driver is a digital interface component that converts a single-ended logic input into a balanced differential output. Differential signaling uses two conductors carrying complementary signals, allowing common-mode voltage and ground-potential differences to be rejected by the receiver. A multi-driver such as the MC3487 consolidates four such output channels in one device, reducing component count and simplifying control in industrial, communications, instrumentation, and embedded systems. The MC3487N is therefore positioned within the hierarchy of logic ICs, interface ICs, line drivers, and communication transceivers. The principal verified features are four independent differential drivers, a single 5 V operating supply, TTL-compatible input buffering, and three-state outputs. The output-enable function is useful when several drivers share a bus or when a system must place an external line into a high-impedance state. Fast transition times support digital data-transfer applications where edge distortion must be controlled. Power-up and power-down protection helps prevent unintended line activity during supply transitions, an important consideration in multi-node equipment. The manufacturer describes the device as interchangeable with compatible RS-422 driver implementations, but system designers should still verify timing, load, protection, and supply requirements for the exact implementation. The MC3487N is a bipolar interface IC rather than a power semiconductor or a modern low-voltage transceiver. It is intended for legacy and established differential-bus designs where 5 V logic, through-hole assembly, and standard RS-422 electrical behavior are priorities. Because the verified data supplied for this page does not include detailed propagation-delay, output-current, input-current, temperature-range, or package-dimension tables, those values are marked as data needed rather than inferred. This preserves separation between verified manufacturer information and engineering estimates. Typical applications include industrial control interfaces, point-to-point serial links, test equipment, data-acquisition systems, peripheral communication, and legacy computer or industrial buses. In a point-to-point link, the MC3487N transmits four complementary differential pairs to a remote receiver. In a multidrop arrangement, the three-state outputs permit driver tri-stating, although cable length, topology, termination, and fault tolerance still require system-level validation. The 16-pin PDIP package is convenient for through-hole designs and prototypes but occupies more board area than a surface-mount equivalent. When laying out a board, place the device near the line-driver outputs and provide a solid ground reference. Keep differential traces coupled and matched in length where practical, provide receiver termination appropriate to the selected RS-422 topology, and leave protection-network space for surge or ESD requirements. Do not assume that a logical replacement preserves all legacy timing and fail-safe behavior; compare the complete data sheets and validate the assembled interface. This page synthesizes verified source links, interface guidance, and comparison structure for engineers evaluating the MC3487N.
MC3487NS - 4-Channel RS-422 Driver | Texas Instruments
Texas Instruments MC3487NS is a quadruple differential line driver with four independent drivers, a single 5 V supply, and a 16-pin small-outline package. It is designed to meet ANSI TIA/EIA-422-B and ITU Recommendation V.11 requirements, making it suitable for balanced digital data links. Each driver accepts a TTL-compatible input through a buffered input that reduces loading, while the differential outputs support reliable transmission over longer cables in noisy industrial environments. The MC3487NS provides three-state outputs, fast transition times, high-impedance inputs, and power-up and power-down protection. A differential line driver is a signal-conditioning interface that converts one logic input into two complementary outputs for a balanced transmission line. This differential signaling method improves noise immunity because the receiver detects the voltage difference between the two conductors rather than relying on one conductor relative to ground. In the hierarchy of electronic components, the MC3487NS is a line-driver IC, a differential interface IC, and a member of the broader interface IC and semiconductor categories. The principal electrical benefit is the combination of four differential channels in one package, allowing multi-channel data links to share a compact circuit footprint. The single 5 V supply simplifies power design, while TTL-compatible inputs allow direct connection with common digital logic families. Three-state outputs permit a connected driver to present a high-impedance state when it is not actively driving a bus, which is useful in systems requiring controlled driver enable and disable behavior. The MC3487NS is commonly paired with the MC3486 quadruple differential line receiver. It can also be used in industrial control links, instrumentation interfaces, test equipment, data acquisition systems, and communications equipment where a point-to-point or multidrop balanced line must be driven from TTL logic. The fast output transition times support higher data rates while maintaining the differential signaling characteristics expected by RS-422-class systems. Designers should verify the complete pinout and logic levels in the manufacturer datasheet before layout because the supplied web excerpts do not expose the individual pin names. The 16-pin surface-mount package should be treated as a differential signaling device: route the driver outputs as a matched pair, minimize stub lengths, provide a continuous ground reference, and confirm cable termination requirements for the selected data rate and topology. The MC3487 is a driver, not a receiver, and it is not an RS-485 multidrop controller with transceiver arbitration. This product data combines the verified Texas Instruments product description and datasheet links with distributor availability references, practical application guidance, and an explicit separation between confirmed facts and parameters that require datasheet confirmation. Pricing and detailed electrical values must be checked against current authorized distributor inventory and the latest manufacturer documentation before release to production.
MC3487NSR - 4-Channel RS-422 Driver | Texas Instruments (Tape & Reel)
Texas Instruments MC3487NSR is a quadruple differential line driver with four independent drivers, a single 5 V supply, and a 16-pin small-outline package. It is designed to meet ANSI TIA/EIA-422-B and ITU Recommendation V.11 requirements, making it suitable for balanced digital data links. Each driver accepts a TTL-compatible input through a buffered input that reduces loading, while the differential outputs support reliable transmission over longer cables in noisy industrial environments. The MC3487NSR provides three-state outputs, fast transition times, high-impedance inputs, and power-up and power-down protection. A differential line driver is a signal-conditioning interface that converts one logic input into two complementary outputs for a balanced transmission line. This differential signaling method improves noise immunity because the receiver detects the voltage difference between the two conductors rather than relying on one conductor relative to ground. In the hierarchy of electronic components, the MC3487NSR is a line-driver IC, a differential interface IC, and a member of the broader interface IC and semiconductor categories. The principal electrical benefit is the combination of four differential channels in one package, allowing multi-channel data links to share a compact circuit footprint. The single 5 V supply simplifies power design, while TTL-compatible inputs allow direct connection with common digital logic families. Three-state outputs permit a connected driver to present a high-impedance state when it is not actively driving a bus, which is useful in systems requiring controlled driver enable and disable behavior. The MC3487NSR is commonly paired with the MC3486 quadruple differential line receiver. It can also be used in industrial control links, instrumentation interfaces, test equipment, data acquisition systems, and communications equipment where a point-to-point or multidrop balanced line must be driven from TTL logic. The fast output transition times support higher data rates while maintaining the differential signaling characteristics expected by RS-422-class systems. Designers should verify the complete pinout and logic levels in the manufacturer datasheet before layout because the supplied web excerpts do not expose the individual pin names. The 16-pin surface-mount package should be treated as a differential signaling device: route the driver outputs as a matched pair, minimize stub lengths, provide a continuous ground reference, and confirm cable termination requirements for the selected data rate and topology. The MC3487 is a driver, not a receiver, and it is not an RS-485 multidrop controller with transceiver arbitration. This product data combines the verified Texas Instruments product description and datasheet links with distributor availability references, practical application guidance, and an explicit separation between confirmed facts and parameters that require datasheet confirmation. Pricing and detailed electrical values must be checked against current authorized distributor inventory and the latest manufacturer documentation before release to production.
MC3488AD - Dual EIA-423/EIA-232D Line Driver | onsemi
onsemi MC3488AD is a dual single-ended line driver designed for EIA-423 and EIA-232D signals, with compatibility also identified for CCITT X.26, X.28, and Federal Standard FIDS1030. The device is intended for applications requiring signal wave shaping when the output load resistance exceeds 450 ohms. It is supplied in an 8-pin SOIC package. Its adjustable output slew rate spans from 1.0 V/µs to 100 V/µs, allowing the transition rate to be adapted to the connected line and receiver. A line driver is an interface circuit that converts digital logic signals into transmission-line-compatible signals for communication links. The MC3488AD belongs to the RS-232 and RS-422 interface IC category, where it provides single-ended output stages for driving external cables or receiver circuits. Compared with a general-purpose logic buffer, its purpose-built driver architecture controls edge transitions and supports the voltage, loading, and waveform requirements associated with established EIA and CCITT communication specifications. The MC3488AD provides two driver channels in one 8-pin SOIC package, reducing the component count in designs requiring more than one transmission-channel output. Its principal documented features include adjustable slew rates from 1.0 V/µs to 100 V/µs, operation with output load resistance greater than 450 ohms, and support for EIA-423, EIA-232D, CCITT X.26, X.28, and Federal Standard FIDS1030. These characteristics make the part relevant to legacy data communications, industrial control links, and equipment interfaces that still use specified single-ended line-driver networks. Slew-rate control is the main technical design variable. A slower edge reduces high-frequency content and ringing but increases transition time, while a faster edge supports higher data throughput at the cost of greater electromagnetic-interference potential and sensitivity to load or termination details. Because the MC3488AD permits adjustable output slew rates, the correct configuration should be selected against the cable length, data rate, receiver thresholds, grounding arrangement, and system EMC requirements rather than chosen solely from a standard data-rate label. Typical uses include industrial serial interfaces, legacy controller peripherals, data-acquisition equipment, and communications systems that require two single-ended line-driver outputs. A board design may pair the MC3488AD with a compatible line receiver such as MC3487DR, a multi-driver interface such as MC3486DR, or a logic interface such as P82B96DR. The output network must be checked against the applicable interface standard because the presence of a compatible logic-side pinout alone does not establish complete system-level interchangeability. When laying out the circuit, keep the output drivers close to their connector or interface-network entry points, provide a stable return path, and verify the selected slew rate against the actual load. Do not infer the complete electrical performance from the EIA references alone; supply voltage, output levels, propagation delay, input compatibility, and absolute maximum ratings must be confirmed in the manufacturer datasheet before production release. This page consolidates the verified manufacturer-document information, exact source links, interface standards, package data, sourcing context, and drop-in comparison candidates for the MC3488AD. It also separates documented facts from values that still require schematic-level verification, helping engineers evaluate this legacy line-driver IC without relying on incomplete distributor summaries.
MC3488AP1 Dual EIA-423/EIA-232D Line Driver | onsemi
The onsemi MC3488AP1 is a dual single-ended line driver designed for EIA-423, EIA-232D, CCITT X.26, X.28, and Federal Standard FIDS1030 signal-interface requirements. The device is packaged in an 8-lead PDIP and provides two driver channels for converting logic-level signals into balanced or unbalanced communication-line waveforms. Its architecture is intended for point-to-point data transmission systems where controlled slew rate, signal shaping, and standard-compliant line levels are important. The MC3488AP1 belongs to the interface IC hierarchy, which includes line drivers, line receivers, RS-232 transceivers, RS-422/RS-485 interface devices, and broader communication ICs. A line driver strengthens a digital signal before it travels through a cable, allowing the signal to retain useful amplitude and timing characteristics over the interconnect. The MC3488A is particularly relevant when an interface must satisfy legacy EIA-423 or EIA-232D signaling requirements rather than only modern logic-level communication. The dual-channel arrangement allows one package to drive two independent communications lines, reducing component count and simplifying board layout compared with separate single-channel drivers. The DIP-8 package supports through-hole assembly and is useful in legacy industrial, telecommunications, instrumentation, and data-communication equipment where component availability, serviceability, and socketed assembly remain important. The manufacturer's MC3488A documentation identifies the device as a dual line driver with externally controlled wave-shaping and slew-rate behavior. Typical applications include legacy data terminals, industrial control links, serial-interface adapters, telecommunications equipment, and embedded systems that need an RS-232D or EIA-423-compatible output stage. The driver should be used with the correct termination, biasing, protection, and cable-routing practices for the selected communication standard. The MC3488AP1 does not include a receiver in the same package, so a separate receiver or transceiver may be required for bidirectional links. When designing a replacement board, verify the exact pinout, supply voltage, output levels, propagation delay, slew rate, and enable or shutdown behavior against the manufacturer datasheet. A nominally similar line-driver package is not automatically a drop-in replacement because EIA-423 and EIA-232D implementations can differ in reference-ground handling, output impedance, and timing. This page combines the manufacturer-aligned part identity, source links, and engineering guidance to support component selection and board-level validation.
MC44BS373CAD - PLL-Tuned UHF/VHF Audio/Video Modulator | NXP
The NXP MC44BS373CAD is a PLL-tuned UHF and VHF audio/video high-integration CMOS modulator designed for VCRs, set-top boxes, and similar consumer video appliances. It supports multiple television standards including NTSC and PAL, integrates a programmable RF output stage, and is controlled via a 5 V- and 3.3 V-compatible I2C bus. The device is supplied in a 16-pin SOIC (SO16NB) small-outline package with gull-wing leads. A modulator (in this context, an RF modulator) is a transmitter IC that mixes a baseband audio and composite-video signal up to a UHF or VHF carrier suitable for direct injection into the antenna input of an analog television receiver. RF modulators sit between the source device (VCR, set-top box, DVD player) and the TV, and historically they were implemented as discrete mixer/oscillator chains. The MC44BS373CA family replaced that discrete chain with a fully integrated PLL-synthesized modulator, dropping dozens of components into a single 16-pin SOIC. Within the broader taxonomy, this part is an RF IC -> modulator -> consumer video IC -> semiconductor. Key specifications include a typical TV output level of 82 dBuV at the antenna terminal, I2C control at standard-mode 100 kHz or fast-mode 400 kHz, multi-standard support (B/G, D/K, M/N, L), and a single 5 V supply. The PLL is fully programmable via the serial interface, removing the manual channel-adjustment trimmers that legacy designs required. A bypass mode supports test and modulation-disabled conditions for factory alignment. Architecturally, the MC44BS373CA uses an on-chip PLL frequency synthesizer driven by an external reference resonator, a programmable divider, and a double-balanced mixer that combines the modulated audio subcarrier with the composite video baseband. The result is a low-phase-noise carrier that meets ETSI EN 50083-13 and FCC Part 15 emission masks for consumer TV modulator products. Compared with the legacy MC44BS373/4 family, the MC44BS373CA revision lowers power consumption and provides finer carrier frequency step resolution. Typical applications include VCR RF output stages, satellite and terrestrial set-top box modulators, DVD player composite-to-RF conversion, game consoles, and CCTV/security observation systems that need to feed analog TV monitors. The wide standard coverage allows a single BOM to ship into multiple regional markets, simplifying manufacturing. Designers should note that the part requires a 75 ohm output network and proper shielding to meet conducted and radiated emissions limits. The external reference resonator value determines the carrier frequency step, and any drift in this component directly translates into channel offset on the TV. This page synthesizes distributor pricing, drop-in alternatives, application circuits, and practical design notes not found in the standalone datasheet.
MC44BS374T1AEF - PLL-Tuned UHF/VHF A/V Modulator | NXP
The NXP MC44BS374T1AEF is a PLL-tuned UHF and VHF audio/video high-integration CMOS RF modulator housed in a 16-pin SOIC (Small Outline IC) package. It is a member of the MC44BS373/4 family of legacy modulators and targets NTSC and PAL television output applications such as set-top boxes, DVD players, VCRs, and video surveillance encoders. The modulator integrates a phase-locked loop (PLL) frequency synthesizer, video modulator, audio FM modulator, and I2C-compatible control interface in a single CMOS die. An RF modulator is a transmitter IC that converts a baseband audio and video signal into a vestigial-sideband or double-sideband RF carrier suitable for connection to a television's antenna input. Within the broader product hierarchy, the MC44BS374 sits at: modulator -> RF transmitter -> specialized consumer IC -> integrated circuit -> semiconductor. It is the direct descendant of the legacy MC44BS373/4 family and is functionally superseded by the newer MC44CC373/MC44CC374 CMOS family while retaining the same footprint and electrical interface to ease migration. Key features include programmable UHF/VHF output frequency via the high-speed I2C-compatible bus, a Logic Output Port pin (pin 3) for status or switching functions, 5 V and 3.3 V compatible I2C logic levels, and a TV output level of 82 dBuV (typical, MC44BS374T1A variant) or 75 dBuV (MC44BS374T1 variant). The PLL architecture provides fine channel selection across the broadcast TV band, allowing the modulator to replace traditional saw filters and discrete modulator circuits in cost-sensitive consumer designs. The IC uses a CMOS process with an integrated VCO and PLL loop filter, reducing external component count compared with older bipolar modulator designs. Typical DC supply is 5 V, and the high-speed I2C bus allows full register configuration of audio deviation, video modulation depth, RF output frequency, and power-down mode. The 16-SOIC package is industry-standard and footprint-compatible with the newer MC44CC374 family, simplifying in-place upgrades. Typical applications include set-top box RF outputs, DVD/VCR combo outputs to legacy televisions, video game console A/V-to-RF adapters, security camera RF modulators, and PC TV-capture cards. The Logic Output Port pin can be used to drive an external LED indicator or switch a relay on channel change. The combination of low external parts count and I2C programmability makes this part attractive for high-volume consumer products. When designing with this modulator, pay close attention to the RF output network - use a proper 75 ohm matching network and shielding to meet FCC/CE radiated emissions limits. Decouple VCC with a 10 uF bulk and 100 nF ceramic capacitor placed as close to the IC as possible; inadequate bypassing produces visible hum bars on the modulated video output. This page synthesizes distributor pricing, drop-in alternatives from the same NXP family (MC44BS373T1AEF, MC44CC373T1AEF, MC44CC374T1AEF), and practical design notes that are not aggregated on DigiKey, Mouser, or Octopart product pages.
MC44BS374T1EFR2 - PLL UHF/VHF A/V Modulator, 16-SOIC | NXP
The NXP MC44BS374T1EFR2 is a PLL-tuned UHF and VHF audio/video high-integration modulator housed in a 16-pin SOIC package, supporting both NTSC and PAL broadcast standards. It delivers synthesized RF output across the UHF/VHF bands from a single 5 V supply and integrates the sound subcarrier oscillator, video modulator, and RF upconverter into a single CMOS die. A video modulator is a specialized IC that mixes a baseband composite video signal (with audio subcarrier) up to a channel-frequency RF output suitable for connection to an antenna input of a TV or set-top box. It belongs to the hierarchy of specialized ICs -> interface ICs -> RF/IF signal chain ICs, and historically served consumer video appliances (VCRs, set-top boxes, DVD recorders, video game consoles) before HDMI replaced analog RF distribution. Key features include a wideband PLL allowing flexible channel selection by I2C programming, low intermodulation distortion for clean video reproduction, separate audio and video inputs, and an integrated DC-DC-friendly architecture that minimizes external component count. The device supports both B/G and D/K system variants in the MC44BS374T1/374T1A family and is footprint-compatible with the earlier MC44BC374T1 generation. From an architectural standpoint, the IC uses a fractional-N PLL synthesizer referenced to a low-phase-noise crystal, allowing fine channel resolution while keeping spurious content low. The modulator chain runs at low power and the RF output stage drives 75 ohm loads with a typical output level in the 70-80 dBuV range, suitable for direct connection to receiver antenna inputs. Typical applications include analog-channel output for legacy TVs in set-top boxes, RF modulation for surveillance camera baseband-to-coax distribution, and modulator modules in VCR/DVD-R designs that must output to older receivers without HDMI inputs. When designing with this device, observe the decoupling requirements from the manufacturer datasheet - typically a 100 nF ceramic on each supply pin plus a bulk 10 uF capacitor at the modulator supply input - and route the RF output trace with controlled 75 ohm impedance for clean spectral output. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers sourcing or evaluating the MC44BS374T1EFR2 make confident second-source decisions.
MC68160AEB - Full AUI/TP 10 Mbps Transceiver | Renesas
The Renesas Electronics MC68160AEB is a 1/1 full-duplex enhanced Ethernet interface transceiver supporting IEEE 802.3 AUI and 10BASE-T twisted-pair media connections, with a 10 Mbps data rate in a 52-pin TQFP package measuring 10 x 10 mm. It integrates the functions needed to bridge an Ethernet controller to either an AUI attachment unit interface or a twisted-pair network through external isolation transformers. An Ethernet interface transceiver is an interface IC that converts logical data and control signals between a network controller and physical medium. In the hierarchy, MC68160AEB belongs to the Ethernet interface transceiver and PHY-related class, within interface ICs and broader network-interface semiconductors. Its dual-media support provides a bridge between an AUI-equipped controller and either an AUI connection or 10BASE-T twisted-pair connection. Principal verified features include one full-duplex transceiver, support for both AUI and TP media, IEEE 802.3 operation, and 10 Mbps throughput. The device is described as a BiCMOS interface circuit and uses external isolation transformers for the required media connections. These characteristics make it relevant to legacy 10 Mbps Ethernet systems rather than modern Fast Ethernet or gigabit designs. The MC68160AEB combines media-dependent interface functions with the physical signaling required for 10BASE-T attachment. AUI provides a standardized station attachment interface, while 10BASE-T defines twisted-pair Ethernet signaling. Supporting both interfaces can simplify system design when equipment must interoperate with AUI networks, transition equipment, or older controller platforms using the same external circuitry and logic family. Typical applications include industrial Ethernet controllers, legacy network interface cards, transition equipment, test systems, and embedded equipment requiring IEEE 802.3 AUI or 10BASE-T connectivity. The 52-TQFP package is surface mountable, but designers should preserve the isolation-transformer and network-impedance requirements shown in the manufacturer datasheet. Design consideration: this is a legacy 10 Mbps interface rather than a replacement for modern integrated Ethernet PHYs. Validate controller signal compatibility, isolation components, magnetics, connector layout, and the intended AUI or twisted-pair topology before committing the 52-pin footprint to a new PCB. This page consolidates verified distributor listings, family alternatives, interface characteristics, and practical replacement guidance. It also distinguishes confirmed drop-in-family options from unsupported cross-package substitutes so engineers can assess PCB compatibility before procurement.
MC68160AFB - 1/1 Full Ethernet AUI/TP Transceiver | NXP
The NXP MC68160AFB is a 1/1 full Ethernet interface transceiver built in BiCMOS technology, supporting both IEEE 802.3 AUI and 10BASE-T twisted-pair media connections through external isolation transformers. Its verified package is 52-TQFP, also described as 52-LQFP in a 10 mm by 10 mm form factor, and its specified supply range is 4.75 V to 5.25 V. The device is intended for legacy Ethernet interface designs that require both AUI and twisted-pair connectivity rather than a modern integrated PHY. An Ethernet transceiver is an interface IC that converts digital or differential signals into the physical signaling used on an Ethernet medium. The MC68160AFB belongs to the broader network-interface and communications-IC hierarchy: Ethernet transceiver, network interface, interface IC, and semiconductor. Its AUI support provides attachment-unit-interface media access, while its 10BASE-T support provides 10 Mb/s twisted-pair operation. The verified material identifies the device as supporting both connection types through external isolation transformers, rather than integrating a transformer on the same package. The principal verified features are one transmitter and one receiver, full-Ethernet operation, AUI/TP protocol support, a 4.75 V to 5.25 V supply range, and a 52-pin TQFP/LQFP package. The package is supplied in a tray according to the available component data. The commercial operating-temperature information supplied by one distributor source is 0 degrees C to 70 degrees C. The listed lead-free status says the part contains lead, so it should not be treated as a lead-free or RoHS-compliant modern design choice without additional qualification evidence. The BiCMOS implementation combines bipolar and CMOS circuit techniques, allowing the interface to provide transmit and receive functions in a mixed-signal package. The verified data does not specify the exact internal transceiver architecture, equalization behavior, isolation requirements, propagation delay, output levels, or maximum cable length. Those parameters must be taken from the manufacturer datasheet before final analog and timing validation. The stated AUI and 10BASE-T support is the key technical feature for determining whether this legacy interface IC is appropriate for a given board. Typical applications include legacy 10 Mb/s Ethernet adapters, industrial data-collection equipment, embedded control systems, AUI-to-10BASE-T media bridges, and test systems that retain older Ethernet physical-layer infrastructure. In these systems, the MC68160AFB can be used where the system controller already handles the Ethernet MAC or frame protocol and only requires the physical medium interface. It is particularly relevant to equipment that needs selectable AUI or twisted-pair media connections and can accommodate external isolation transformers. The primary design consideration is system compatibility. The 52-TQFP package, 5 V supply, external isolation-transformer requirement, and legacy Ethernet protocol must all be confirmed before layout. A modern design with integrated 10/100 Ethernet PHY support may be simpler, but replacing this part with a modern PHY is not a pin-compatible substitution and generally requires redesign. For an existing MC68160AFB board, verify the exact pin functions, transformer center-tap requirements, termination network, and signal timing against the manufacturer datasheet before production. This page consolidates the verified manufacturer and distributor descriptions, exact package and supply information, cross-reference results, and engineering-oriented selection notes. It also distinguishes verified facts from fields that remain unavailable, avoiding unsupported claims about pinout, pricing, detailed timing, or universal replacement compatibility.
MC68160BAE - Enhanced Ethernet Transceiver | Renesas
The Renesas Electronics MC68160BAE is an enhanced Ethernet interface transceiver with full AUI and twisted-pair support, supplied in a 52-pin TQFP surface-mount package measuring 10 x 10 mm. Distributor records identify the device as a one-channel, full-duplex Ethernet transceiver, making it suitable for systems that require a dedicated interface between a controller or bus logic and an Ethernet physical layer. An Ethernet interface transceiver is a physical-layer interface IC that connects digital controller signals with an Ethernet medium. Within the electronics hierarchy, the MC68160BAE is an interface IC, an Ethernet transceiver, and a networking semiconductor. Its AUI and twisted-pair capabilities place it in the legacy and enhanced Ethernet interface category, where designers seek a single interface device supporting multiple attachment-unit-interface or twisted-pair signal paths rather than implementing separate external interface circuits. Verified listings identify the MC68160BAE as an enhanced Ethernet interface transceiver with one full-duplex transceiver channel. The part is offered in a 52-TQFP package with a 10 x 10 mm body, allowing compact surface-mount assembly on industrial controllers, embedded systems, communication equipment, and legacy Ethernet interface boards. The package format is also used by related MC68160-family devices, making the device family relevant to repair, migration, and board-support planning. The available verified data primarily establishes the device identity, interface function, channel configuration, package, and source-document metadata. Detailed electrical limits, timing values, temperature ratings, signal names, and detailed pin assignments were not supplied in the retrieved snippets. Those values must therefore be confirmed against the manufacturer or archived MC68160 datasheet before a new circuit is released. In particular, engineers should verify supply voltage, TTL and differential-signal levels, isolation requirements, media support, and maximum cable length for the intended Ethernet standard. Typical applications include embedded Ethernet controller interfaces, industrial data-acquisition equipment, legacy AUI-based network equipment, and systems requiring both AUI and twisted-pair attachment options. In these applications, the MC68160BAE can provide the physical interface layer between a controller and external network circuitry. Design validation should include signal-integrity review, grounding, connector and cable requirements, reset or enable timing, and any isolation components required by the installation environment. The principal procurement consideration is lifecycle and supply continuity. Although the verified DigiKey and Mouser listings show the MC68160BAE as an orderable Renesas Electronics product, current production status and long-term support should be confirmed with Renesas or an authorized distributor. This page synthesizes verified distributor listings, package information, source provenance, and engineering guidance without substituting unsupported electrical values for the manufacturer datasheet.
MC68B21CP-G - Peripheral Interface I/O Expander | Rochester Electronics
The Rochester Electronics, LLC MC68B21CP-G is a peripheral interface I/O expander associated with the Motorola MC68B21 family and used to extend processor-controlled peripheral connectivity. The retrieved distributor records identify it as an integrated-circuit I/O expander in the peripheral-interface category and report an active product status. A listed unit price is $93.9371 as of October 30, 2026, while stock availability is explicitly reported by several independent distributor pages. An I/O expander is an interface IC that adds parallel input or output lines to a processor or programmable bus controller. In the broader hierarchy, an I/O expander belongs to interface ICs, then to integrated circuits and semiconductors. This distinction matters because the MC68B21 family was designed for systems in which a host processor required additional peripheral data lines without relying exclusively on the processor's native port resources. The MC68B21CP-G designation identifies a specific orderable member of that legacy interface family. The available listings consistently classify MC68B21CP-G as an I/O expander and peripheral-interface IC. The Rochester Electronics record is shown as in stock, the LCSC record lists a price from $93.9371, and the Components-House result reports 863 pieces in stock. A separate Full Electronic listing reports an inventory quantity of 36,484 units. These figures come from different sellers and should not be interpreted as a single consolidated stock total. The product-status record from FPGACenter identifies the component as currently active in production. MC68B21CP-G is relevant to repair, modernization, industrial-control, embedded-system, and legacy-computing projects that specifically call for this established peripheral-interface device. Because it belongs to an older MC68 processor-support ecosystem, system compatibility depends on the host bus, control-signal arrangement, logic levels, timing, and package footprint documented for the selected device revision. A PCB replacement is not automatically safe merely because another product is also called an I/O expander; the data bus, register behavior, address decoding, interrupt handling, and electrical timing must match. The retrieved web material does not expose a complete manufacturer specification table, package drawing, pinout, timing diagram, or absolute maximum ratings. Consequently, those details remain unresolved rather than being inferred from similarly named devices. For new production, engineers should obtain the MC68B21 family documentation, confirm the exact package suffix, validate signal compatibility, and complete a system-level timing check before committing a substitute or alternate ordering code to the PCB. This page consolidates the verified distributor identity, current price and availability signals, source links, sourcing context, and selection guidance for MC68B21CP-G. It separates confirmed listing data from unresolved engineering fields so engineers can rapidly assess legacy-system fit without treating generic I/O-expander specifications as part-specific facts.
MC74F243M - Quad Bus Transceiver, 3-State | onsemi | SOIC-14
The onsemi MC74F243M is a quad bus transceiver with 3-STATE outputs in a 14-pin small-outline integrated circuit (SOIC-14) surface-mount package. It belongs to the 74F (FAST Schottky TTL) logic family, which provides significantly faster propagation delays than standard 74LS TTL while remaining compatible with TTL voltage levels. A bus transceiver is an interface IC that allows bidirectional data transfer between two buses or between a bus and a processor. In the logic IC hierarchy, the 74F243 is a specialized interface device - part of the broader 7400-series transistor-transistor logic (TTL) family - combining four driver circuits and four receiver circuits arranged in the same physical package so that data can flow from the A bus to the B bus or from the B bus to the A bus under the control of separate enable inputs. Key features of the MC74F243 include four independent bus transceiver channels, 3-STATE outputs that effectively disconnect the device from the bus when disabled, and separate direction control (GAB and GBA type enables) for each transfer direction. The FAST Schottky TTL process delivers the fast edge rates expected of the 74F family, making the device suitable for backplane and inter-board data paths that outgrow slower 74LS-class transceivers. Architecturally, each transceiver cell contains a driver with a 3-STATE output stage and a receiver path whose active state is selected by the enable pins. When an enable input is inactive, the corresponding outputs assume the high-impedance state, allowing multiple transceivers to share a common bus without bus contention. Typical applications include bidirectional CPU memory-bus buffering, backplane data transceivers in industrial control systems, general-purpose 4-bit bus isolation, and legacy system maintenance where original TTL bus transceivers must be sourced for repair. A key design consideration is that FAST TTL devices consume more power than CMOS alternatives; verify the drive and thermal requirements of your bus before selecting 74F over 74LS or 74HC parts. This page consolidates sourcing availability, packaging details, and practical design notes for the MC74F243M in one place, complementing the manufacturer datasheet with drop-in replacement guidance not found on distributor pages.
MCP2003BT-H/MC - LIN Transceiver, Integrated Vreg, 8-DFN | Microchip
The Microchip Technology MCP2003BT-H/MC is a stand-alone LIN (Local Interconnect Network) transceiver with an integrated 3.3V or 5.0V voltage regulator, packaged in an 8-pin DFN (2x3 mm) with exposed pad. It provides a bidirectional, half-duplex physical layer interface to LIN bus systems and supports bus speeds up to 20 kbaud (the LIN 2.2A standard). The device meets LIN Bus Specification Revision 2.2, SAE J2602, and ISO 17987, and operates across a wide VBB supply range of 6.0V to 27.0V (continuous), with transient tolerance up to 40V. A LIN transceiver is a specialized interface IC that connects a microcontroller's UART to a single-wire LIN bus used predominantly in automotive body and chassis electronics. It translates CMOS/TTL logic levels on the TXD/RXD pins into the dominant/recessive voltage swings defined by the LIN protocol, and includes the bus-side pull-up, current-limiting, and ESD protection required for harsh 12V vehicle environments. With the addition of an integrated LDO, the MCP2003 family can power the host MCU directly, reducing BOM cost and PCB area in LIN nodes such as door modules, seat controllers, and sensor clusters. Key features include a low standby current of typically 5 µA in Sleep mode, ±8 kV HBM ESD on the LIN pin, thermal shutdown, a permanent dominant bus timeout (TXD and LIN), and a CS/WAKE pin that supports local wake-up. The integrated voltage regulator delivers up to 70 mA (3.3V or 5.0V selectable via the LVA pin), enough for small microcontrollers and sensor conditioning circuits. The exposed pad (EP) on the 8-DFN package provides a low thermal resistance of approximately 38 C/W, enabling robust operation at ambient temperatures up to +150C. The device family is qualified to AEC-Q100 Grade 0 for automotive use (the /H suffix confirms Grade 0 over -40C to +150C). Internally, the transceiver uses a high-side LIN driver and a window comparator for the receiver, providing excellent common-mode rejection and immunity to ground shift between the ECU and the bus. Diagnostic features include bus-fault detection, dominant timeout, and an integrated pull-up on the CS pin for default-on operation. Typical applications include automotive body electronics (door modules, seat controllers, mirror adjusters, window lifters), HVAC control panels, LIN sensor nodes for temperature, pressure, and humidity, industrial CAN/LIN bridges, and appliance control modules. The 8-DFN (2x3) package is well suited to compact PCBs where the small regulator is desired for direct MCU supply. When designing with this part, ensure the VBB input has a reverse-battery blocking diode or protection MOSFET and a bulk capacitor of at least 1 µF close to the pin. The CS pin should be tied to VBB through a 100 kΩ resistor when no MCU wake-up control is needed, and the LIN bus pin requires a 30 pF to 200 pF total bus capacitance per the LIN physical-layer spec.