Circuitos Integrados

SN74HCS541PWR

SN74HCS541PWR - Octal Buffer Schmitt 3-State TSSOP-20 | TI

The Texas Instruments SN74HCS541PWR is an octal buffer and line driver with Schmitt-trigger inputs, 3-state outputs, and a flow-through pinout, supplied in a 20-pin TSSOP (PW) package. It operates over a wide 2 V to 6 V supply range and is fully specified from -40C to +125C. What is an octal buffer/line driver? It is a digital logic IC providing eight independent buffer channels capable of driving bus lines or long PCB traces. The 3-state outputs allow each device to release the bus into a high-impedance state, enabling multi-device bus sharing, while Schmitt-trigger inputs add hysteresis that converts slow or noisy input edges into clean logic transitions. The SN74HCS541 belongs to the HCS (High-speed CMOS with Schmitt-trigger) logic family, combining CMOS low power with TTL-compatible drive. Key features include the 2 V to 6 V operating range for 3.3 V and 5 V mixed-voltage systems, typical 0.4 V input hysteresis at 4.5 V for superior noise immunity, dual active-low output enables (OE1 and OE2, both must be low to activate outputs), and only 20 uA typical quiescent current at 6 V. Outputs sink or source up to 6 mA at 4.5 V, suitable for driving LEDs, relays, or additional logic inputs. Fabricated in silicon-gate CMOS, the device balances switching speed with low power dissipation. The flow-through pinout places inputs on one side and outputs on the opposite side, simplifying PCB routing and reducing crosstalk in bus-oriented layouts. Typical applications include microcontroller bus buffering, memory address/data line driving, sensor signal conditioning, and interfacing 3.3 V logic to 5 V domains in industrial automation and automotive-adjacent systems. Design tip: control the OE pins carefully to avoid bus contention, place 0.1 uF decoupling capacitors close to VCC/GND, and keep input rise times below 500 ns at 2 V and 200 ns at 6 V for best performance.

USD $0,22 Em estoque

SN74HCS541QPWRQ1

SN74HCS541QPWRQ1 - AEC-Q100 Octal Buffer 3-State | TI

The Texas Instruments SN74HCS541QPWRQ1 is an automotive-qualified (AEC-Q100) octal buffer and line driver featuring eight non-inverting channels with 3-state outputs, Schmitt-trigger inputs, and a flow-through pinout, supplied in a 20-pin TSSOP (PW) package rated from -40C to +125C. An octal buffer/line driver is a digital logic IC in the CMOS logic family that provides signal buffering, drive-current amplification, and bus isolation between a controller and its loads. Within the logic hierarchy, it belongs to the buffer and line-driver category of specialty logic, sitting between simple gates and full bus transceivers. The 3-state (tri-state) outputs allow multiple devices to share a common bus by high-impedance disconnection when disabled. Key features include Schmitt-trigger inputs with hysteresis that tolerate slow or noisy input edges typical of automotive harnesses, wide VCC operation of the HCS Schmitt-CMOS family, two independent active-low output-enable pins (OE1 and OE2) for flexible bus control, and a flow-through pinout that simplifies PCB routing by keeping inputs on one side and outputs on the other. The Q1 grade ensures AEC-Q100 qualification and PPAP support for automotive designs. The HCS (HC with Schmitt input) architecture combines high-speed CMOS output drive with hysteresis-enhanced input stages, improving noise margin on long or filtered signal lines. Outputs are non-inverting, so logic polarity is preserved, making the device suitable for address and control bus buffering in MCU-based systems. Typical applications include automotive body electronics and ADAS control modules, buffering GPIO or SPI/control lines from MCUs such as the TMS320F2800xx series, industrial PLC I/O isolation, and level-tolerant interfacing to switches and sensors with slow edge rates. Design tip: tie both OE pins low for always-enabled operation, and keep VCC decoupling (100 nF ceramic) close to the supply pins; the Schmitt inputs allow RC-filtered inputs but do not eliminate the need for controlled signal routing.

USD $0,30 Em estoque

SN74HCS86PWR

SN74HCS86PWR - Quad 2-Input XOR Schmitt-Trigger Gate | TI

The Texas Instruments SN74HCS86PWR is a quadruple 2-input XOR (exclusive OR) gate with Schmitt-trigger inputs, supplied in a 14-pin TSSOP (PW) surface-mount package. It operates from a 2V to 6V supply and is fully specified from -40C to +125C for industrial environments. A logic gate is the fundamental building block of digital electronics, performing Boolean operations on binary inputs. The XOR gate outputs a high level only when an odd number of its inputs is high, making it essential for adders, parity generators and checkers, comparators, and programmable inverters. The SN74HCS86 belongs to the TI HCS family, which pairs CMOS low static power with Schmitt-trigger inputs for superior noise immunity - a drop-in upgrade path for the classic 74HC86. Key features include the wide 2V to 6V operating range, Schmitt-trigger inputs with hysteresis (typically around 0.5V at a 5V supply), CMOS technology for near-zero quiescent current, and balanced output drive. Per the TI datasheet, the device can drive loads up to 50 pF while meeting all datasheet specifications; larger capacitive loads are not recommended. Technically, the CMOS architecture provides high noise margins and negligible static current, while the Schmitt inputs use internal positive feedback to create hysteresis. This makes the part tolerant of inputs from mechanical switches, quadrature encoders, RC oscillators, and long wires with slow rise times - conditions that would cause a standard HC86 input to oscillate or multi-trigger. Typical applications include signal conditioning of noisy sensor or switch inputs, parity generation in serial communication links, crystal and RC oscillator circuits, frequency doubling (XOR with a delayed copy of itself), and digital comparator functions in industrial control, instrumentation, and automotive modules. Design tip: tie all unused inputs to a defined logic level (GND or VCC) to prevent floating nodes, and keep total capacitive load per output at or below 50 pF; add a buffer such as SN74LVC244A if heavier loads are required. Pricing references below are as of 2026-08-30.

USD $0,13 Em estoque

SN74HCS86QPWRQ1

SN74HCS86QPWRQ1 - Quad 2-Input XOR Gate, AEC-Q100 | TI

The Texas Instruments SN74HCS86QPWRQ1 is an automotive-qualified quadruple 2-input XOR (exclusive OR) gate with Schmitt-trigger inputs, supplied in a 14-pin TSSOP (PW) package. It operates from a wide 2 V to 6 V supply range and across a -40C to +125C ambient temperature range, per AEC-Q100 temperature grade 1 qualification. An XOR gate is a fundamental digital logic primitive in the combinational logic family of gates and inverters: its output is HIGH only when an odd number of inputs is HIGH, making it essential for adders, parity generation and checking, pseudo-random sequence generation, and signal comparison. The SN74HCS86-Q1 belongs to the HCS (HC with Schmitt) CMOS logic family, a modern low-power derivative of the classic 74HC high-speed CMOS series. The key feature distinguishing this device is its Schmitt-trigger inputs, which tolerate slow or noisy input edges that would cause oscillation in standard CMOS gates. The wide 2 V to 6 V operating range supports legacy 5 V systems as well as 3.3 V and lower-voltage rails. The device offers very low static power consumption typical of CMOS logic, and automotive-grade robustness with HBM ESD Level 2 and CDM ESD classification Level C6 per the TI datasheet (Rev. C). Because all four XOR gates are independent in a single package, the device consolidates parity trees, phase comparators, and code-comparison functions efficiently on board. Balanced drive capability and standardized TTL/CMOS-compatible thresholds at 5 V ease interfacing with microcontrollers and FPGAs. Typical applications include automotive body and powertrain modules, gate drivers for isolated communication schemes, parity checkers in serial links, frequency doublers, and XOR-based CRC generation in industrial systems. Design tip: keep unused inputs tied to VCC or GND (unused XOR gates may have inputs grounded) to prevent floating-node oscillation and excess current draw, and provide local 100 nF decoupling per TI logic application guidance.

USD $0,17 Em estoque

SN74HCT240PWR

SN74HCT240PWR - Octal Inverting 3-State Buffer | TI TSSOP-20

The Texas Instruments SN74HCT240PWR is an octal inverting buffer and line driver with 3-state outputs, organized as 2 elements of 4 bits each, housed in a 20-pin TSSOP (PW) package. It operates from a 4.5 V to 5.5 V VCC supply, features TTL-compatible CMOS inputs, and provides high-current outputs capable of driving up to 15 LSTTL loads. A buffer and line driver is a digital logic device that amplifies and isolates a signal between a source and a load. In digital design hierarchy, buffers and line drivers sit between general-purpose logic gates (inverters, NAND, flip-flops) and transceivers/bus switches; they regenerate weak or fan-out-limited signals without changing their logic meaning. The 'inverting' variant flips the logic level - a high input produces a low output - which is useful for active-low control signals and bus arbitration. The 3-state output feature adds a high-impedance state controlled by an output-enable pin, allowing multiple drivers to share a bus without contention. Key features of the SN74HCT240 include typical output drive of +/-6 mA at 5 V, low input current of +/-1 uA maximum, and a propagation delay of approximately 13 ns (tPLH/tPHL) at 25 C and 5 V VCC. The HCT logic family accepts TTL-level inputs while providing CMOS-level output swings, making it a drop-in interface between legacy 5 V TTL peripherals and modern CMOS logic. Two independent output-enable pins (1OE, 2OE) allow half-chip control for split-bus architectures. Internally, the device uses CMOS fabrication with TTL-compatible input thresholds of 0.8 V (VIL) and 2.0 V (VIH), ensuring interoperability with 5 V TTL peripherals while maintaining CMOS low-power quiescent current of 40 uA maximum. The output stage uses a complementary push-pull structure that delivers symmetric rise and fall times. Typical applications include bus buffering between microcontrollers and memory, signal isolation on address/data lines, LED driving arrays, and general-purpose signal conditioning in industrial controls and instrumentation. The wide operating temperature range of -40 C to +85 C supports both commercial and industrial environments. When designing with the SN74HCT240, ensure that the output-enable pins are tied to a valid logic level (not left floating) to prevent the outputs from entering an indeterminate state. For high-speed buses, place a 0.1 uF decoupling capacitor as close as possible to the VCC pin and route output traces with controlled impedance. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer or distributor page - including same-brand SN74HCT244PWR (non-inverting variant) and cross-brand equivalents from onsemi (MC74HCT240ADTR2G) and NXP, enabling engineers to evaluate substitutes quickly.

USD $0,16 Em estoque

SN74HCT245NSR

SN74HCT245NSR - Octal Bus Transceiver 3-State | Texas Instruments

The Texas Instruments SN74HCT245NSR is an octal bus transceiver with 3-state outputs designed for asynchronous two-way communication between data buses, housed in a 20-pin SOP (NS) surface-mount package. It operates from a 4.5V to 5.5V supply, delivers ±6mA output drive at 5V, and features a typical propagation delay of 14 ns. An octal bus transceiver is a digital logic integrated circuit that buffers and transfers eight bits of data between two buses in either direction. As a member of the broader voltage-level-translation and buffer/driver family within the 74HCT high-speed CMOS-TTL-compatible logic series, it sits between bus masters (such as microcontrollers or FPGAs) and peripheral buses, providing drive strength, direction control, and high-impedance isolation. Key features include an operating voltage range of 4.5V to 5.5V, high-current 3-state outputs that can drive bus lines directly or up to 15 LSTTL loads, and low power consumption with a maximum ICC of 80 uA. The device provides ±6mA output drive at 5V and a low input current of 1 uA maximum. Inputs are TTL-voltage compatible, allowing direct interfacing with 5V TTL logic and many 3.3V microcontroller outputs. Architecturally, the SN74HCT245 uses a non-inverting 8-bit transceiver core with two control pins: DIR (direction) selects the data path (A-to-B or B-to-A), and OE (output enable) active-low pin places all outputs in the high-impedance 3-state condition. The HCT CMOS process combines the low static power of CMOS with TTL input thresholds, minimizing external timing requirements per the TI datasheet. Typical applications include microprocessor and MCU peripheral bus isolation, memory and I/O expansion buses, backplane communication in industrial controllers, and 5V legacy system interfacing where TTL-compatible inputs are required. For reliable operation, tie OE low through a pull-down resistor when unused, and place 0.1uF decoupling capacitors close to the VCC pin on both sides of the wide-body package. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.

USD $0,20 Em estoque

SN74HCT74

SN74HCT74 - Dual D-Type Flip-Flop with Clear/Preset | TI

The SN74HCT74 is a dual D-type positive-edge-triggered flip-flop from Texas Instruments, featuring clear and preset inputs. It operates over a supply voltage range of 4.5V to 5.5V, making it compatible with TTL logic levels. The device is available in multiple package options including 14-pin DIP (N), SOIC (D), and TSSOP (PW), with the SN74HCT74N being a common through-hole variant. A D-type flip-flop is a fundamental sequential logic element that stores one bit of data. On the rising edge of the clock signal, the output (Q) takes the value of the data input (D). The SN74HCT74 contains two independent flip-flops, each with preset (PRE) and clear (CLR) inputs that asynchronously set or reset the outputs regardless of clock state. This makes it essential for building registers, counters, and state machines in digital systems. Key features include a wide operating voltage range of 4.5V to 5.5V, low power consumption with a maximum ICC of 40 µA, and the ability to drive up to 10 LSTTL loads. The typical propagation delay (tpd) is 15 ns at 5V, and the output drive capability is ±4 mA. The device is fully specified for operation from -40°C to 85°C, making it suitable for industrial applications. The SN74HCT74 uses HCT (High-Speed CMOS with TTL-compatible inputs) technology, which combines the low power of CMOS with the input thresholds of TTL. This allows direct interfacing with TTL logic without additional level shifting. The positive-edge-triggered design ensures reliable data capture, and the asynchronous preset and clear inputs provide flexible control for initialization and reset operations. Typical applications include data storage registers, frequency dividers, and control logic in microcontrollers, industrial automation, and consumer electronics. The device is also used in debouncing circuits and as a building block for more complex sequential logic. Its TTL compatibility makes it ideal for mixed-voltage systems. When designing with the SN74HCT74, ensure that the setup and hold times are met relative to the clock edge. The preset and clear inputs are active-low and should be tied high when unused. Decouple the power supply with a 0.1 µF capacitor near the VCC pin to minimize noise.

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SN74LS07D

SN74LS07D - Hex Buffer/Driver OC 30V 40mA | Texas Instruments (Tape & Reel)

The Texas Instruments SN74LS07D is a hex non-inverting buffer and driver featuring high-voltage open-collector outputs rated at 30 V with a maximum sink current of 40 mA, supplied in a 14-pin SOIC (D) package. Operating from a 4.75 V to 5.25 V TTL supply over a 0 C to 70 C commercial temperature range, it performs level translation and high-current load driving in a single low-cost IC. A buffer/driver is a logic element that isolates and amplifies digital signals so a low-power logic output can drive heavier loads, longer buses, or circuits operating at different voltage levels. Buffers and drivers sit within the broader hierarchy of logic ICs, which spans gates, flip-flops, registers, and bus interface devices in standard 7400 TTL and CMOS families. Key features include open-collector outputs that interface directly with high-level circuits such as MOS gates, indicator lamps, and relays; a strong 40 mA sink-current capability well beyond standard TTL outputs; input clamping diodes that simplify system design by suppressing negative-going line transients; and operation as a straight-through non-inverting buffer for driving TTL inputs. These characteristics make it a classic choice for logic-to-power interfacing. Architecturally, the SN74LS07 is a bipolar LS-TTL device. Each of the six channels is a single transistor with its collector open at the package pin, so no output-high voltage is driven internally; instead, an external pull-up resistor to any voltage up to 30 V defines the logic-high level. This permits conversion of 5 V TTL logic levels to MOS levels, wire-AND logic combining, and driving of lamps or relays with the external pull-up sized for the load current. Typical applications include driving LED indicators and relays from microcontroller or TTL outputs, level shifting between 5 V logic and higher-voltage MOS circuits, implementing wire-AND/wire-OR bus lines on shared nodes, and general TTL buffering in industrial control panels and test fixtures. In design, always provide an external pull-up resistor on every output, sized so the sink current stays below 40 mA and the pull-up dissipation is acceptable; do not use this part where an active drive-high output is required. This page synthesizes verified distributor data, drop-in alternatives, pinout, and practical design notes not found in the manufacturer datasheet.

USD $0,19 Em estoque

SN74LS07DR

SN74LS07DR - Hex Buffer/Driver OC 30V 40mA | Texas Instruments

The Texas Instruments SN74LS07DR is a hex non-inverting buffer and driver featuring high-voltage open-collector outputs rated at 30 V with a maximum sink current of 40 mA, supplied in a 14-pin SOIC (D) package. Operating from a 4.75 V to 5.25 V TTL supply over a 0 C to 70 C commercial temperature range, it performs level translation and high-current load driving in a single low-cost IC. A buffer/driver is a logic element that isolates and amplifies digital signals so a low-power logic output can drive heavier loads, longer buses, or circuits operating at different voltage levels. Buffers and drivers sit within the broader hierarchy of logic ICs, which spans gates, flip-flops, registers, and bus interface devices in standard 7400 TTL and CMOS families. Key features include open-collector outputs that interface directly with high-level circuits such as MOS gates, indicator lamps, and relays; a strong 40 mA sink-current capability well beyond standard TTL outputs; input clamping diodes that simplify system design by suppressing negative-going line transients; and operation as a straight-through non-inverting buffer for driving TTL inputs. These characteristics make it a classic choice for logic-to-power interfacing. Architecturally, the SN74LS07 is a bipolar LS-TTL device. Each of the six channels is a single transistor with its collector open at the package pin, so no output-high voltage is driven internally; instead, an external pull-up resistor to any voltage up to 30 V defines the logic-high level. This permits conversion of 5 V TTL logic levels to MOS levels, wire-AND logic combining, and driving of lamps or relays with the external pull-up sized for the load current. Typical applications include driving LED indicators and relays from microcontroller or TTL outputs, level shifting between 5 V logic and higher-voltage MOS circuits, implementing wire-AND/wire-OR bus lines on shared nodes, and general TTL buffering in industrial control panels and test fixtures. In design, always provide an external pull-up resistor on every output, sized so the sink current stays below 40 mA and the pull-up dissipation is acceptable; do not use this part where an active drive-high output is required. This page synthesizes verified distributor data, drop-in alternatives, pinout, and practical design notes not found in the manufacturer datasheet.

USD $0,19 Em estoque

SN74LS07DRE4

SN74LS07DRE4 - Hex Buffer Open-Collector 30V | TI

The Texas Instruments SN74LS07DRE4 is a hex non-inverting buffer/driver with high-voltage open-collector outputs rated at 30 V, 40 mA sink capability, and operation from a 4.75 V to 5.25 V supply, housed in a 14-pin SOIC (D) package. A buffer/driver is a logic element that isolates signal sources from loads and provides the current drive capability that standard logic outputs often lack. Within the power-management and interface hierarchy, buffers bridge low-power digital controllers and higher-current loads such as LEDs, relays, motors and high-level logic families. Open-collector buffers are a special class: the output transistor can only sink current, so the logic-high level is set by an external pull-up resistor, allowing level shifting between different voltage domains. Key features of the SN74LS07 include a rated output voltage of 30 V on the open-collector stage, a maximum sink current of 40 mA per output, six independent non-inverting elements in one package, and classic Low-Power Schottky (LS) TTL bipolar technology. The DRE4 ordering suffix denotes the 14-SOIC package in tape-and-reel packaging for automated assembly. Technically, the bipolar LS architecture provides fast switching with robust noise margins and rugged open-collector outputs suited for driving heavy loads. Because outputs are open-collector, they support wired-AND configurations where multiple outputs share a pull-up, a common technique for shared interrupt or status lines. Typical applications include driving high-current LED indicators, interfacing 5 V logic to high-level circuits up to 30 V, relay and solenoid drive, and TTL input buffering in industrial control panels. Design consideration: always provide a pull-up resistor to the desired high-level voltage; the open-collector output cannot source current, and the pull-up value trades speed against sink current. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

USD $0,12 Em estoque

SN74LS07N

SN74LS07N - 6-Channel Open-Collector Buffer | Texas Instruments

The Texas Instruments SN74LS07N is a six-channel, non-inverting bipolar buffer and driver with open-collector high-voltage outputs, a 4.75 V to 5.25 V supply range, and a 30 V rated output voltage in a 14-PDIP package. Each channel provides input buffering for TTL-compatible signals and can sink up to 40 mA for relay, lamp, and other high-level interface loads. The open-collector architecture requires an external pull-up resistor and permits wired interfaces, level translation, and multiple drivers to share a bus safely when only one driver pulls low at a time. An open-collector buffer or driver is a digital interface IC whose output transistor can sink current but cannot actively source current. It belongs to the logic IC hierarchy: digital buffer/line driver, interface device, semiconductor, and through-hole DIP package. This distinction is important because the output node floats high when the transistor is off, allowing the external pull-up voltage to determine the high level. The SN74LS07 therefore differs from ordinary totem-pole TTL outputs, which source current actively. The main engineering benefits are six independent channels, high-voltage open-collector outputs, high sink-current capability, and operation from a single 5 V supply. The rated 30 V output voltage supports interfaces involving higher-voltage control signals, while the 40 mA maximum sink current is relevant for indicator lamps and relay coils. The device can also convert TTL-level inputs into suitable sink-current drive signals for MOS-level, lamp, or relay-control circuits. Because outputs are open-collector, multiple channels can be tied together with one pull-up when the intended use is wired-AND behavior. SN74LS07N uses Low-Power Schottky TTL-compatible logic characteristics. Its inputs are designed to be driven from TTL signals, and its output behavior is intentionally asymmetric: the output transistor pulls the node down but leaves it high-impedance when inactive. Propagation delay, rise time, fall time, input thresholds, output leakage, and temperature limits must be taken from the manufacturer datasheet when timing or system-level compatibility is critical. The supplied search results confirm the 4.75 V to 5.25 V supply range, 30 V rated output voltage, and 40 mA maximum sink current. Typical applications include relay and solenoid drivers, indicator-lamp interfaces, open-collector alarm and fault signaling, bidirectional-looking bus interfaces where wired-AND operation is desired, and level translation from TTL logic to higher-voltage open-collector nets. In a relay circuit, the SN74LS07N output transistor sinks coil current while the flyback diode returns inductive current to the supply or clamp network. In a lamp circuit, the pull-up resistor supplies current when the channel turns on, allowing the same logic family to control a load that is not driven directly by a standard TTL output. When laying out a design, place the pull-up resistor close to the shared output node and choose its value from the required sink current, pull-up voltage, input leakage, and load capacitance. Do not assume a push-pull signal can be attached directly without checking contention. Verify the external load's voltage and current against the 30 V and 40 mA ratings, and account for transistor power dissipation when driving a continuously energized load. This page combines verified manufacturer and distributor information with practical application and replacement guidance.

USD $0,28 Em estoque

SN74LS138

SN74LS138 - 3-to-8 Decoder/Demultiplexer LS-TTL | TI

The SN74LS138 is a 3-line to 8-line decoder/demultiplexer from Texas Instruments, part of the 74LS family of Schottky-clamped TTL MSI circuits designed for high-performance memory decoding and data-routing applications requiring very short propagation delay times. It provides three binary select inputs (A, B, C), three enable inputs (G1, G2A, G2B), and eight active-low outputs (Y0-Y7), operating from a 5V supply over 0C to +70C. A decoder is a combinational logic circuit that converts binary information from n input lines to a maximum of 2^n unique output lines. The 3-to-8 decoder is a fundamental building block in digital systems, used to select one of eight devices based on a 3-bit address. As an MSI device, it sits between SSI gates and LSI circuits in the digital logic hierarchy, and decoders are essential in memory address decoding where they enable specific memory chips. Key features include a typical propagation delay of 20 ns, low LS-TTL power dissipation (about 32 mW typical), and active-low outputs that sink up to 8 mA. The three enable inputs allow cascading multiple decoders into larger arrays (e.g., 4-to-16) and gating the device with control signals. Schottky-clamped TTL technology delivers high speed with good noise immunity and full TTL compatibility with 74LS, 74ALS, and 74AS families. The device is offered in 16-pin PDIP (N), SOIC (D), and SOP (NS) packages; the SN74LS138N in 16-PDIP is popular for through-hole and breadboard prototyping. According to the TI datasheet, the SN74LS138 is characterized from 0C to 70C for commercial operation. Typical applications include memory chip-select decoding in microprocessor systems, peripheral address decoding, and demultiplexing a single data line to one of eight outputs. Design tip: enable the device by driving G1 high and G2A/G2B low; tie unused inputs to valid logic levels to avoid floating nodes, and exploit the active-low outputs to drive active-low chip-select pins directly.

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SN74LS145

SN74LS145 - BCD-to-Decimal Decoder/Driver | Texas Instruments

The SN74LS145 is a monolithic BCD-to-decimal decoder/driver with open-collector outputs, designed to accept BCD inputs and provide appropriate outputs to drive 10-digit incandescent displays. It consists of eight inverters and ten four-input NAND gates, with the inverters connected in pairs to make BCD input data available for decoding by the NAND gates. Full decoding of valid BCD input logic ensures that all outputs remain off for all invalid binary input conditions. The device is available in a 16-pin PDIP package with through-hole mounting, making it suitable for legacy and new designs requiring high-voltage, high-current sinking capability. A BCD-to-decimal decoder is a combinational logic circuit that converts a 4-bit binary-coded decimal (BCD) input into one of ten decimal outputs. The SN74LS145 is a specific implementation that includes open-collector output transistors capable of sinking up to 80 mA at 15 V, allowing direct drive of relays, incandescent lamps, and other high-current loads. This decoder/driver sits within the broader hierarchy of digital logic ICs, specifically within the 74LS family of low-power Schottky TTL devices, which are known for their speed and compatibility with TTL, DTL, and MOS logic levels. Key features of the SN74LS145 include high-breakdown output transistors rated at 15 V, each capable of sinking up to 80 mA of current. Each input is one Series 54/74 or Series 54LS/74LS standard load, ensuring easy interfacing with other TTL logic. The open-collector outputs allow wired-OR connections and level shifting, providing design flexibility. The device operates over a wide supply voltage range and is compatible with standard TTL power supplies (5 V). The SN74LS145 uses low-power Schottky (LS) technology, which reduces power dissipation compared to standard TTL while maintaining high speed. The open-collector outputs are implemented with high-voltage transistors, enabling the device to drive loads connected to higher voltage rails (up to 15 V) while the logic operates at 5 V. This architecture is particularly useful in industrial control and display applications where loads require higher voltages than the logic supply. Typical applications include driving incandescent displays, relay drivers, and other high-current loads in industrial control systems, test equipment, and consumer electronics. The device is also used in BCD-to-decimal decoding for seven-segment displays, though it requires external current-limiting resistors. Its ability to sink 80 mA per output makes it suitable for driving relays and lamps directly, reducing the need for additional driver transistors. When designing with the SN74LS145, ensure that the output load current does not exceed the 80 mA rating and that the output voltage does not exceed 15 V. Pull-up resistors may be required when driving logic inputs from the open-collector outputs. The device is not recommended for new designs due to its obsolescence, but it remains available for legacy system maintenance.

USD $0,42 Em estoque

SN74LS17N

SN74LS17N - Hex Open-Collector Buffer Driver | Texas Instruments

The Texas Instruments SN74LS17N is a six-channel, non-inverting buffer and driver with open-collector high-voltage outputs, a 14-pin DIP package, and a 0°C to 70°C commercial temperature range. The device provides six independent channels with input clamping diodes, high sink-current capability, and open-collector outputs designed for driving indicator lamps, relays, and MOS-level interfaces. Its open-collector architecture requires an external pull-up resistor and permits wired-AND or wired-OR connections when the system bus design requires them. What is a buffer or logic driver? A buffer is a digital IC that reproduces a logic signal at a compatible voltage and current level, while a driver adds output-current capability for loads beyond ordinary logic-gate fanout. The SN74LS17N belongs to the 74LS low-power Schottky TTL logic family, which is part of the broader digital IC and logic-IC hierarchy. Its open-collector outputs can sink current from an external pull-up network, making it useful where a driven device must share a bus or where system shutdown must actively pull a line low. Key features include six non-inverting channels, open-collector high-voltage outputs, input clamping diodes, and high sink-current capability. The verified product description specifically identifies the device as suitable for converting TTL voltage levels to MOS levels and driving indicator lamps and relays. Because the outputs are open collector, voltage rise time depends on the pull-up resistor, load capacitance, and the driven load rather than being determined only by the IC output stage. This makes resistor and capacitance selection important in time-sensitive systems. The SN74LS17N uses a 14-pin through-hole DIP package, with a commercial-grade temperature range of 0°C to 70°C. The provided sources identify the function, package class, channel count, terminal count, open-collector output architecture, input clamping, and high sink-current capability. Detailed electrical limits such as supply voltage, output current, propagation delay, input and output voltage levels, and absolute maximum ratings were not included in the supplied verified excerpts and are therefore marked for data retrieval rather than guessed. Typical applications include TTL-to-MOS level conversion, relay-driver circuits, indicator-lamp interfaces, alarm and status signaling, and digital control lines requiring active-low open-collector behavior. An external pull-up resistor must be selected so that its sink current remains within the SN74LS17N output specification and so that the resulting RC rise time meets the receiving circuit's timing requirements. Multiple open-collector outputs can be connected to a common pull-up for wired logic, provided the aggregate sink-current limit is respected. When designing a replacement board, preserve the 14-pin DIP pinout and account for open-collector output behavior. Do not assume a push-pull output can be substituted without reviewing the pull-up network and downstream load. Verify the external pull-up voltage, relay-coil current, logic thresholds, temperature requirements, and timing budget against the complete manufacturer datasheet before production release.

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SN74LS68N

SN74LS68N - 4-Bit Parallel Binary Accumulator | Texas Instruments

The Texas Instruments SN74LS68N is a 4-bit parallel binary accumulator counter IC with a listed price of $0.5606 from LCSC as of 2026-10-22 and a verified in-stock listing. The available source data identifies the device as a counter IC, while the broader SN74LS68 function listing describes it as a 4-bit parallel binary accumulator. Its package, pin count, supply ratings, timing, and electrical limits are not stated in the supplied verified records. A parallel binary accumulator is a synchronous counting-logic IC that adds an external addend value to an internal register during an active clock transition. This makes it part of the 74-series TTL logic hierarchy: digital counter, arithmetic logic, digital integrated circuit, and semiconductor. Unlike a basic ripple counter, a parallel accumulator can combine counting and addition functions while presenting a multibit result for address generation, sequencing, instrumentation, or digital control. The N suffix identifies a through-hole Texas Instruments ordering variant, but the exact package technology, number of pins, and dimensions are absent from the verified data. Consequently, the package should not be inferred solely from the suffix. Likewise, propagation delay, output drive, fan-out, supply voltage, and operating temperature cannot be stated safely until the manufacturer datasheet or internal database provides those values. This page preserves those unknowns rather than substituting parameters from a related SN74LS86 quad XOR gate. Potential uses include binary sequencing, digital measurement systems, programmable counters, test equipment, and control logic where parallel addition is useful. Circuit implementation must preserve the device's actual logic polarity, clock requirements, clear behavior, and pinout from the authoritative datasheet. Because those details are not included in the supplied records, they remain explicit data gaps rather than inferred values. For sourcing, DigiKey Marketplace, LCSC, and Octopart provide SN74LS68N listings, but the supplied material does not establish a complete quantity-tier price schedule. LCSC explicitly reports an in-stock status and a starting price of $0.5606. Confirm current stock, lifecycle status, pin-compatible substitutions, and authorized-source traceability before committing a production design. This page combines verified distributor listings, the available functional description, strict data-gap handling, and replacement research. It deliberately excludes unrelated SN74LS86N results and does not claim unverified drop-in alternatives, electrical specifications, pin assignments, or compliance status.

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SN74LS69D

SN74LS69D - Dual 4-Bit Counter, 16-Pin SOIC | Texas Instruments

Texas Instruments SN74LS69D is a dual 4-bit binary counter operating from a 4.75 V to 5.25 V supply, with up to 25 MHz operating frequency, 54 ns propagation delay, and a 16-pin SOIC package. It is suitable for digital counting, frequency division, timing, sequencing, and control logic applications. A binary counter is a synchronous sequential-logic device that stores and advances a multi-bit count. The SN74LS69 family belongs to the 74LS TTL logic series and provides two 4-bit binary counters with negative-edge triggering. Its decade-counter mode and asynchronous ripple architecture make it useful when compact, low-complexity counting is preferred over a more complex programmable counter. The verified source data identifies the SN74LS69 as a dual 4-bit decade or binary counter. The SN74LS69D ordering code uses the SOIC-16 package. Its listed operating frequency is up to 25 MHz, while the listed propagation delay is 54 ns under a 30 pF load condition. The specified supply-voltage range is 4.75 V to 5.25 V. Typical uses include digital clock dividers, event counters, sequencing circuits, industrial timing modules, and embedded control logic. Because it is a legacy LS-series TTL device, design engineers should account for supply voltage, fan-out, propagation delay, and unused input states rather than assuming compatibility with modern CMOS families. For a new design, keep clock traces short, provide a stable 5 V rail, and decode unused counter outputs carefully. Ripple transitions can propagate through multiple stages, so the maximum frequency and output timing should be checked against the complete cascaded-counter implementation. Verify operating temperature and qualification requirements against the current manufacturer documentation before production release. This product page consolidates distributor availability, technical specifications, package information, and engineering guidance. It also distinguishes verified values from parameters that are not supplied in the retrieved data, helping engineers make a grounded purchasing and design decision.

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SN74LS85D

SN74LS85D - 4-Bit Magnitude Comparator | Texas Instruments

The Texas Instruments SN74LS85D is a 4-bit magnitude comparator that compares two four-bit words, A and B, and produces active-high decisions for A<B, A=B, and A>B. It accepts straight binary or straight BCD 8-4-2-1 codes, operates in the 74LS low-power Schottky TTL logic family, and is packaged in a 16-pin SOIC (D) package. The device supports expandable comparisons by cascading multiple units through its higher-order inputs. Its three decoded outputs provide a convenient interface for digital sorting, conditional control, address decoding, and arithmetic sequencing. A magnitude comparator is a combinational logic IC that determines the relative order of two unsigned digital words. Within the broader hierarchy of comparator, digital comparator, logic IC, and semiconductor, the SN74LS85D is designed for fixed-width four-bit comparisons rather than subtraction or signed arithmetic. Because its operation is not restricted to binary, it can also compare monotonic BCD 8-4-2-1 values. The A3 and B3 inputs are the most significant comparison bits, while A0 through A3 and B0 through B3 provide the parallel input set. The main engineering features are three active-high outputs, expansion capability, multi-code operation, and a standard 16-SOIC footprint. The A<B, A=B, and A>B outputs allow a system to decode all three possible relationships without external logic. Expansion inputs permit a larger word width to be implemented by comparing the lower four bits first and feeding the next comparison result into higher-order sections. This makes the device useful where fixed-width ordering must be performed before another digital block makes a decision. In typical applications, the SN74LS85D compares binary counter values, BCD digit values, control registers, or decoded sensor and keypad states. It can drive selection logic in multiplexers, threshold decisions in industrial controls, or sequencing signals in digital systems. Because it is a logic device rather than a power semiconductor, safe-operating-area data is not applicable. Thermal and electrical design should instead focus on supply voltage, input levels, output loading, fan-out, and trace continuity. A key design consideration is to treat unused inputs deliberately. Enable or expansion pins must be tied to a defined logic level rather than left floating, especially in systems where unused TTL inputs can increase noise sensitivity or create unintended current paths. Designers should also verify the relevant supply rail and propagation-delay limits against the system timing budget. The manufacturer datasheet is the authoritative source for electrical limits and pin-level details. This product page combines verified manufacturer and distributor information with application guidance, comparison criteria, and design notes. It is intended to help engineers identify the SN74LS85D for four-bit binary or BCD ordering and to plan a replacement review without assuming that a similar comparator is automatically pin-compatible.

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SN74LS85N

SN74LS85N - 4-Bit Magnitude Comparator | Texas Instruments

The Texas Instruments SN74LS85N is a 4-bit magnitude comparator with eight parallel data inputs, three active-high decision outputs, and 16-PDIP packaging. According to the TI product page, it compares two 4-bit words and supports straight binary and straight BCD (8-4-2-1) codes. It is a standard 74LS-series logic device intended for digital systems requiring A<B, A=B, and A>B decisions. A magnitude comparator is a combinational logic IC that determines the relative ordering of two unsigned binary or coded words. The SN74LS85N accepts A0-A3 and B0-B3, with A3 and B3 serving as the most significant inputs. Its three fully decoded outputs indicate whether the A word is less than, equal to, or greater than the B word. This places it within the broader hierarchy of comparator logic, digital logic IC, and semiconductor. The device supports binary and 8-4-2-1 BCD operation, as stated in the TI datasheet. It can also be expanded to compare words longer than four bits by cascading multiple devices, with the higher-order comparator receiving the lower-order equality result. This makes the SN74LS85N useful in address decoding, sorting control, arithmetic control, industrial control, and embedded digital systems. The SN74LS85N is identified as a 16-pin PDIP by the distributor data. The verified sources identify the function and package but do not provide the complete electrical timing, power, temperature, or pin-level specification tables in the supplied snippets. Those values are therefore marked as data needed rather than inferred. The device uses TTL-compatible LS-series logic, but exact voltage and timing limits should be taken from the manufacturer datasheet before design release. Designers should preserve the device's 16-pin DIP footprint, connect the supply and ground pins according to the datasheet, and account for propagation delay when using comparison results in synchronous control logic. For replacement decisions, verify pinout, power-supply voltage, output behavior, temperature range, and package rather than relying on the magnitude-comparison function alone. This page combines verified distributor and manufacturer information with explicit data gaps for an honest engineering starting point.

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SN74LS90D

SN74LS90D - Decade Counter, 4-Bit, LS-TTL, 14-SOIC | Texas Instruments

The Texas Instruments SN74LS90D is a monolithic 4-bit asynchronous decade counter built using low-power Schottky TTL (LS-TTL) technology, supplied in a 14-pin SOIC (D) package. It contains four master-slave flip-flops plus dedicated gating that implements two independent counter sections: a single divide-by-two flip-flop on the A side and a three-stage divide-by-five ripple counter on the B side. The two sections can be cascaded externally to obtain a divide-by-10 (decade, BCD 8421) counter, a symmetrical divide-by-10 (bi-quinary) counter, or a divide-by-12 counter, all selectable by how the QA output is wired back to the B-clock input. A decade counter is a fundamental sequential-logic building block in digital electronics. Decade counters cycle through ten stable output states (0 through 9) before recycling and are widely used as frequency dividers, decimal event counters, and BCD-to-display drivers. As a member of the 74LS (Low-power Schottky) TTL logic family, the SN74LS90 trades raw speed for substantially lower power consumption than the original 74xx series, while retaining TTL-compatible input thresholds and output drive levels that make it easy to interface with legacy 5V system designs, microcontrollers, and discrete indicator drivers. Key features include a guaranteed maximum clock frequency around 30 to 45 MHz at 5V VCC, 14-pin SOIC surface-mount packaging, MSI (medium-scale integration) gate complexity, and fully buffered complementary outputs on all four flip-flop stages. The part operates from a single 4.75V to 5.25V supply and is specified over the commercial 0C to +70C temperature range for the SN74LS90D commercial grade variant. Architecturally, the device uses asynchronous (ripple) clocking - flip-flops toggle on the negative edge of their individual clocks - which simplifies decoding but introduces cumulative propagation delay across the four bits. Engineers planning to decode dynamic states (rather than latched outputs) must factor in the ripple delay when designing overdrive or coincidence logic. Typical applications include digital clock frequency division (divide-by-10 stages used to generate 1 Hz from a 10 Hz oscillator), event counters driving seven-segment displays, decimal counting displays in instrumentation and test equipment, and industrial control panels where a 5V TTL-compatible decade counter is required. The dual divide-by-two / divide-by-five topology also makes the SN74LS90 useful as a general purpose frequency divider to drive lower-speed logic from a higher-rate clock source. When using this device, keep in mind that asynchronous ripple counters are not recommended for high-speed synchronous designs where all bits must update simultaneously; choose a synchronous counter such as the SN74LS160 or SN74LS162 for those cases. Decoupling VCC with a 0.1uF ceramic capacitor close to pin 14 and providing a clean ground reference at pin 7 is essential for reliable counting at high frequencies. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. All information is anchored to TI's official SN74LS90 datasheet, distributor listings, and cross-reference guides valid as of October 2026.

USD $0,65 Em estoque

SN74LS92D

SN74LS92D - Divide-by-12 4-Bit Counter | Texas Instruments

Texas Instruments SN74LS92D is a divide-by-12, 4-bit, positive-edge-triggered counter IC with one counter element, supplied in a 14-pin SOIC package. The verified distributor listing identifies the device as a counter and divider in the 74LS logic family. Its specified counting function provides modulo-12 state sequencing for digital control, timing, and clock-generation systems, while the 14-SOIC package supports conventional through-hole PCB assembly and breadboard or prototype integration. A counter IC is a synchronous sequential-logic device that advances an internal binary state when it receives an active clock transition. The SN74LS92 belongs to the broader 74LS TTL family, which combines digital counting functions with standard bipolar logic interfaces. Divide-by-12 operation is useful when a system needs a repetitive 12-state sequence rather than a binary modulus of 2, 8, or 16. The output state can therefore be decoded for clock-enable generation, event counting, phase selection, or repetitive control sequencing. The verified data specifically identifies a 4-bit counter, one element, positive-edge triggering, and a divide-by-12 function. The 14-pin SOIC package is the confirmed physical format for the SN74LS92D ordering code. Other operating details, including supply voltage limits, propagation delay, output drive capability, current consumption, and temperature limits, were not included in the supplied verified records and must be confirmed against the manufacturer datasheet before design release. Typical uses include industrial timing modules, digital clock dividers, pulse and event counters, sequencing controllers, and educational digital-logic systems. The positive-edge trigger means the counter changes state on the designated clock transition rather than every clock level. Designers should preserve the counter’s reset behavior and unused input states according to the manufacturer datasheet, and should not substitute a generic counter unless its count modulus, pinout, voltage interface, and timing characteristics are verified as compatible. The primary design consideration is package and logic-family compatibility. SN74LS92D uses a 14-pin SOIC footprint, so a proposed replacement must match that footprint and confirm every terminal function. Supply-voltage compatibility, output timing, fan-out, and signal-integrity margin are especially important when the counter interfaces with slower TTL, faster CMOS, microcontroller, or optocoupler-based systems. This page consolidates verified distributor information, official Texas Instruments product identification, package data, application context, and replacement-screening guidance. The available records do not provide a verified unit price, complete electrical limit table, or five distinct drop-in alternatives; those fields are intentionally marked for verification rather than inferred.

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SN74LV123ARGYR

SN74LV123ARGYR - Dual Retriggerable Mono Multivibrator | TI

The Texas Instruments SN74LV123ARGYR is a dual retriggerable monostable multivibrator with Schmitt-trigger inputs, housed in a 16-pin VQFN (RGY) package measuring 4 mm x 3.5 mm. Each channel generates a fixed-duration output pulse in response to a falling-edge trigger, with the pulse width set by an external RC network. The device operates from a 2 V to 5.5 V VCC supply and supports typical propagation delay of 8.3 ns at 5 V with 12 mA output drive. A monostable multivibrator, also called a one-shot, is a sequential logic element with one stable state and one quasi-stable state. When triggered, the output transitions to the active state for a precisely defined interval then returns to the idle state, regardless of further trigger activity until the timing capacitor discharges. Retriggerable one-shots extend the output pulse if a new trigger arrives during the timing window, allowing pulse-width extension under software or hardware control. The 'LV123A family belongs to TI's LV-A logic series, optimized for low-voltage, low-power mixed-signal designs and ideally suited for battery-powered or interface-isolation tasks. Key features include Schmitt-trigger inputs that provide hysteresis for slow or noisy edges, complementary Q and /Q outputs per channel, an internal clear input to abort timing, and a typical VOLP/VOHV output bounce/undershoot below 1 V at 25 °C. The wide 2 V to 5.5 V supply range enables direct interface to 3.3 V and 5 V logic without level translators, and the wide operating temperature range of -40 °C to +125 °C supports industrial and automotive-grade designs. Internally the device uses CMOS logic with TTL-compatible input thresholds, achieving typical ICC quiescent current low enough for portable designs. Each channel shares a common VCC and GND but has independent timing components (R_ext and C_ext), enabling two simultaneous one-shot functions in a single IC footprint. Typical applications include debounce circuits for mechanical switches, watchdog timers for microcontrollers, missing-pulse detectors in safety and instrumentation, pulse-width modulation control loops, and waveform generation for digital logic testers. Designers also use the SN74LV123A in line-card timing, sequencing for multi-rail power systems, and as a fixed-delay element in digital communication front-ends. When designing with this device, select the timing resistor within the recommended range and use a low-leakage timing capacitor (NP0/C0G or film) to preserve pulse-width accuracy. Place timing components close to the R_ext/C_ext pins to minimize parasitic capacitance that would otherwise extend the pulse and degrade retrigger integrity. This page consolidates distributor pricing, verified drop-in same-package alternatives, and PCB layout guidance that goes beyond the manufacturer datasheet, helping procurement and design engineers select and qualify this part faster.

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SN74LV1T125DBVR

SN74LV1T125DBVR - 1-Bit Buffer/Level Shifter SOT-23-5 | TI

The Texas Instruments SN74LV1T125DBVR is a single-bit non-inverting buffer gate with 3-state output, supplied in a 5-pin SOT-23 (DBV) package. It operates across a wide VCC range of 1.8 V to 5.5 V with CMOS logic-level thresholds, supports input voltages up to 5.5 V regardless of VCC, and provides ±8 mA output drive at 5 V. The active-low output enable (OE) pin allows bus-style multiplexing by placing the output in high-impedance when asserted. A logic level shifter is an integrated circuit that translates signals between circuits operating at different voltage domains, such as a 3.3 V microcontroller interfacing with a 1.8 V sensor. The SN74LV1T125 belongs to TI's LV1T family of single-gate CMOS logic with reduced input thresholds, sitting within the broader hierarchy of buffer/driver -> logic gate -> standard logic IC -> semiconductor. Its wide-input tolerance eliminates the need for external pull-ups or level-shift circuits in mixed-voltage designs, simplifying PCB layout and reducing BOM cost. Key differentiating features include 5 V tolerant inputs that enable down-translation (e.g., 3.3 V input to 2.5 V output at VCC = 2.5 V), schmitt-trigger inputs for slow or noisy edges, low Ioff (partial-power-down support) for live-insertion scenarios, and ±8 mA balanced output drive. Typical propagation delay is around 3 to 5 ns at 5 V, suitable for moderate-speed control and data paths rather than high-speed SERDES interfaces. Architecturally, the device uses a standard CMOS buffer topology with a 3-state output stage. The OE-bar input gates the output enable line directly to the output PMOS/NMOS pair; when OE is high, both output transistors are off and the pin presents high impedance. The reduced input-threshold design lets a 1.8 V input reliably switch a 5 V VCC rail, which simplifies system design when interfacing legacy 5 V peripherals with modern low-voltage controllers. Typical applications include GPIO expansion on low-voltage MCUs, voltage translation between 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains, signal buffering on long PCB traces or cables, bus isolation between multiple processors, and reset or enable signal distribution. Designers favor it for cost- and space-constrained designs that need a true single-gate solution without paying for an unused quad buffer. When designing with this part, ensure that the OE pin is driven to a valid logic level (never left floating) because an undriven enable can cause shoot-through or undefined output states. Decouple VCC with a 100 nF ceramic capacitor placed within a few millimeters of the supply pin, and remember that partial-power-down (Ioff) only protects the output when VCC = 0 V; inputs above VCC will still forward-bias protection diodes if VCC is present. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers quickly evaluate the SN74LV1T125DBVR for new designs and second-source strategies.

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SN74LV240A

SN74LV240A - Octal Inverting Buffer/Driver 3-State | TI

The SN74LV240A is an octal inverting buffer/line driver with 3-state outputs from Texas Instruments, designed for 2-V to 5.5-V VCC operation. It provides 8 mA of drive current at 3.3 V, making it ideal for bus interface applications where data retention or latching is required. The device features inverted outputs and is optimized for 3-state memory address drivers, clock drivers, and bus-oriented receivers/transmitters. An octal buffer/driver is a digital integrated circuit that provides eight independent buffering channels, each capable of driving a bus line with high current and low output impedance. The 3-state outputs allow the device to be disconnected from the bus (high-impedance state) when not active, enabling multiple devices to share the same bus without contention. This category sits within the logic IC family, specifically under buffers/drivers, which are essential for signal conditioning and bus isolation in digital systems. Key features include a wide operating voltage range of 2 V to 5.5 V, low power consumption typical of LV CMOS technology, and high drive capability of 8 mA at 3.3 V. The device supports mixed-mode voltage operation on all ports, allowing interfacing between different voltage domains. It also features latch-up performance exceeding 250 mA per JESD 17 and robust ESD protection, ensuring reliability in harsh environments. The SN74LV240A is fabricated using low-voltage CMOS technology, which provides a balance between speed and power dissipation. The 3-state outputs are controlled by an output-enable (OE) input, allowing the outputs to be placed in a high-impedance state for bus sharing. The inverting outputs provide signal inversion, which can simplify logic design in certain applications. The device is available in multiple package options, including SOIC, SSOP, and TSSOP, offering flexibility for various PCB layouts. Typical applications include memory address drivers, clock drivers, bus-oriented receivers/transmitters, and general-purpose digital interfacing. The low drive current and low noise characteristics make it suitable for low-noise applications where signal integrity is critical. The wide voltage range allows operation in both 3.3-V and 5-V systems, making it a versatile choice for mixed-voltage designs. When designing with the SN74LV240A, ensure proper decoupling capacitors are placed near the VCC and GND pins to minimize power supply noise. The OE pin should be tied to a defined logic level to avoid floating outputs, which can cause excessive power consumption or bus contention. Consider the propagation delay and output transition times when interfacing with high-speed buses to avoid timing violations.

USD $0,19 Em estoque

SN74LV3T99-Q1

SN74LV3T99-Q1 - 3ch Configurable Gate, 1.8-5.5V | TI

The Texas Instruments SN74LV3T99-Q1 is an automotive-grade, ultra-configurable multiple-function gate containing three independent configurable logic gates with 3-state outputs. Each gate has four inputs and implements the Boolean function Y = (A • /C + B • C) ⊕ D, with all inputs including Schmitt-triggers to eliminate erroneous data outputs caused by slow-edged or noisy input signals. The device operates from 1.8V to 5.5V and is offered in a 20-pin TSSOP (PW) package, with a 20-pin VSSOP (DGS) variant available. The -Q1 suffix denotes AEC-Q100 qualification for automotive applications. Configurable logic gates are digital ICs that let designers implement multiple logic functions in a single device, selected by pin strapping. They belong to the broader standard logic IC family - fundamental building blocks providing glue logic, level shifting, and signal conditioning in digital systems. The SN74LV3T99-Q1 sits within the LV (Low-Voltage) CMOS family and additionally functions as a logic-level shifter between voltage domains. Key features include three independent four-input gates with 3-state outputs for bus-oriented applications, Schmitt-trigger inputs providing hysteresis for superior noise immunity, and a wide 1.8V to 5.5V supply range enabling translation between 1.8V, 2.5V, 3.3V, and 5V logic families. AEC-Q100 qualification guarantees operation from -40C to +125C per automotive reliability requirements. Technically, the device uses CMOS technology for low static power consumption and high noise immunity. The configurable architecture replaces multiple discrete gates with one device, reducing board space and BOM count. The Boolean function supports MUX, AND, OR, NAND, NOR, XOR, XNOR, inverter, and buffer configurations - 16 output patterns determined by the 4-bit input when OE is low - while the output-enable (OE) input permits multiple devices to share a common bus through a high-impedance state. Typical applications include automotive body control modules, infotainment systems, and industrial automation, where the device handles signal conditioning, level shifting, and custom logic. The Schmitt-trigger inputs reliably interface sensors, switches, and microcontrollers in noisy environments. Test and measurement equipment also uses configurable logic for signal routing and control. Design tip: place 0.1uF decoupling capacitors close to the power pins, and carefully control the 3-state output-enable signals to avoid bus contention.

USD $0,41 Em estoque

Subcategorias

Produtos (32725)

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SN74HCT240PWR - Octal Inverting 3-State Buffer | TI TSSOP-20

SN74HCT245NSR - Octal Bus Transceiver 3-State | Texas Instruments

SN74HCT74 - Dual D-Type Flip-Flop with Clear/Preset | TI

SN74LS07D - Hex Buffer/Driver OC 30V 40mA | Texas Instruments (Tape & Reel)

SN74LS07DR - Hex Buffer/Driver OC 30V 40mA | Texas Instruments

SN74LS07DRE4 - Hex Buffer Open-Collector 30V | TI

SN74LS07N - 6-Channel Open-Collector Buffer | Texas Instruments

SN74LS138 - 3-to-8 Decoder/Demultiplexer LS-TTL | TI

SN74LS145 - BCD-to-Decimal Decoder/Driver | Texas Instruments

SN74LS17N - Hex Open-Collector Buffer Driver | Texas Instruments

SN74LS68N - 4-Bit Parallel Binary Accumulator | Texas Instruments

SN74LS69D - Dual 4-Bit Counter, 16-Pin SOIC | Texas Instruments

SN74LS85D - 4-Bit Magnitude Comparator | Texas Instruments

SN74LS85N - 4-Bit Magnitude Comparator | Texas Instruments

SN74LS90D - Decade Counter, 4-Bit, LS-TTL, 14-SOIC | Texas Instruments

SN74LS92D - Divide-by-12 4-Bit Counter | Texas Instruments

SN74LV123ARGYR - Dual Retriggerable Mono Multivibrator | TI

SN74LV1T125DBVR - 1-Bit Buffer/Level Shifter SOT-23-5 | TI

SN74LV240A - Octal Inverting Buffer/Driver 3-State | TI

SN74LV3T99-Q1 - 3ch Configurable Gate, 1.8-5.5V | TI