Logic ICs
Products (362)
74LVC1GU04GW,125 - Single Unbuffered Inverter | Nexperia | 5-TSSOP
The Nexperia 74LVC1GU04GW,125 is a single unbuffered inverter IC housed in a 5-pin TSSOP (SOT-353/UMT5) package, built on a Si-gate CMOS process that delivers superior performance over most advanced CMOS-compatible TTL families. The device operates across a wide 1.65 V to 5.5 V supply range and accepts input drive levels from either 3.3 V or 5 V logic, making it drop-in compatible with mixed-voltage system designs. As an unbuffered (raw inverter) topology, it provides the shortest possible propagation delay in its class while maintaining low static power consumption. An unbuffered inverter is a single-input CMOS logic function that inverts the input logic level at the output without an internal Schmitt-trigger or amplification stage. This places the unbuffered inverter in the digital-logic IC family hierarchy: inverter -> gate -> combinational logic -> logic IC -> integrated circuit -> semiconductor. Unbuffered inverters are preferred over buffered (standard) inverters in oscillator circuits, linear amplifiers, and analog signal paths because the absence of an internal gain stage preserves signal linearity and minimizes additive phase shift. The 74LVC1GU04GW,125 features a typical quiescent current of 100 µA, ±24 mA output drive capability at 3.3 V, and propagation delay of 1.7 ns typical at 3.3 V VCC with 15 pF load. The wide operating voltage window, schmitt-tolerant inputs, and 5-pin TSSOP footprint make it ideal for portable, IoT, and space-constrained PCB layouts. Nexperia's LVC family is also characterized by low-power operation, making it suitable for battery-powered applications where quiescent current directly affects runtime. The device architecture uses a single CMOS inverter cell whose output transitions follow the input directly without hysteresis. This raw-inverter topology is essential when the inverter is used as a linear amplifier or in crystal-oscillator feedback loops where the buffered variant's gain stage would distort the waveform. The 5-pin SOT-353 package provides a compact 2.0 mm x 1.25 mm x 1.1 mm outline. Typical applications include crystal oscillator modules, sine-wave to logic-level converters, level translation in mixed 3.3 V / 5 V systems, and general-purpose logic inversion in portable and IoT devices. The device is also commonly used as a small-signal amplifier in RF detector circuits and as a delay element in digital timing chains. When designing with this part, note that the input has no Schmitt-trigger hysteresis; therefore, slow or noisy edges may produce multiple output transitions. Place a small series resistor at the input (typically 100 ohm to 1 kohm) when driving from long PCB traces to control edge rate. The 5-TSSOP package has a thermal resistance of approximately 250 C/W, so output current must be limited well below 24 mA continuous in high-ambient-temperature environments. This page synthesizes Nexperia distributor pricing, real cross-brand drop-in equivalents sourced from the same 5-TSSOP footprint, and practical analog/digital design notes not found in the manufacturer datasheet.
74LVC2G02DC-Q100 - Dual 2-Input NOR Gate, AEC-Q100 | Nexperia
The Nexperia 74LVC2G02DC-Q100 is a dual 2-input NOR gate fabricated in CMOS logic and qualified to the AEC-Q100 automotive reliability standard, housed in an 8-pin VSSOP (SOT765, DC) package measuring approximately 2.30 mm x 2.30 mm. Each gate independently performs the Boolean NOR function Y = NOT(A OR B), and both gates share a common supply pin. The device operates across a 1.65 V to 5.5 V VCC range, with inputs tolerant of voltages up to 5.5 V regardless of VCC level, enabling direct interfacing between 3.3 V and 5 V nodes in mixed-voltage designs. A NOR gate is a fundamental CMOS logic building block that produces a HIGH output only when both of its inputs are LOW; when either input goes HIGH, the output is forced LOW. As part of the broader logic IC family (logic gate -> combinational logic -> digital IC -> semiconductor), the NOR function is functionally complete on its own, meaning any Boolean expression can be constructed from NOR gates alone - a property leveraged in classic RTL designs and modern low-density glue-logic applications. Key parametric features include a typical propagation delay of approximately 2.4 ns at 5 V VCC (per Nexperia 74LVC2G02 family datasheet), Schmitt-trigger inputs that tolerate slow or noisy edges, IOFF circuitry that disables outputs during partial-power-down to prevent backflow current, and automotive-grade reliability from -40 C to +125 C. The wide supply range supports both 1.8 V, 2.5 V, 3.3 V, and 5 V rails without level shifters. Architecturally, the device uses Nexperia's standard LVC (Low-Voltage CMOS) topology with parallel P/N-MOS pull-up/pull-down networks sized for balanced rise and fall times. The Schmitt-trigger hysteresis at each input raises the noise margin above that of conventional CMOS gates, while IOFF diodes protect downstream ICs when VCC collapses. Typical applications include automotive body and chassis ECUs, infotainment and ADAS sensor signal conditioning, 3.3 V-to-5 V level translation, control logic for motor drivers, and general-purpose glue logic in industrial PLCs. The Q100 suffix indicates AEC-Q100 qualification for automotive use cases. When laying out the part, place the VCC decoupling capacitor within 2 mm of the supply pin and avoid routing noisy switching traces near the inputs to preserve the Schmitt-trigger hysteresis. For battery-powered designs, account for the quiescent supply current draw even when logic states are static.
74LVC2G125DC - Dual 3-State Buffer 1.65V-5.5V | Nexperia
The Nexperia 74LVC2G125DC is a dual non-inverting buffer/line driver with 3-state outputs, housed in an 8-pin VSSOP (SOT765) package. It operates over a wide supply voltage range of 1.65 V to 5.5 V and accepts input signals up to 5.5 V regardless of VCC, enabling seamless interfacing between 3.3 V and 5 V logic families without level shifters. A buffer IC (also called a line driver) is a digital logic component whose primary function is to isolate a signal source from its load while reproducing the input logic level at the output with no inversion. Buffers with 3-state outputs (high, low, high-impedance) allow multiple devices to share a common bus by selectively enabling or disabling the output stage. The 74LVC family belongs to the Low-Voltage CMOS logic family, characterized by low static power consumption, high noise margin, and 5 V input tolerance even when powered at lower voltages - making it ideal for mixed-voltage system designs. Key features include ±24 mA output drive capability at VCC = 3.0 V, typical propagation delay of 2.0 ns at VCC = 3.3 V, and integrated ESD protection exceeding 2000 V HBM (JESD22-A114) and 200 V MM (JESD22-A115). Each buffer has an independent active-low output enable pin (1OE, 2OE), allowing per-channel bus control. The CMOS low-power design minimizes quiescent current draw, which is critical for battery-powered and always-on applications. The 74LVC2G125DC utilizes Nexperia's advanced CMOS process with Schmitt-trigger inputs for improved noise immunity and slow-input transition tolerance. Output edges are well-controlled, and the symmetric output drive ensures balanced rise/fall times across operating conditions. Independent enable inputs support partial power gating, enabling selective deactivation of unused signal paths. Typical applications include bus isolation in mixed-voltage systems, signal buffering for memory and peripheral interfaces, level translation between 5 V and 3.3 V logic domains, fan-out expansion for clock distribution, and I/O port expansion in microcontrollers. The wide operating range makes it equally suitable for portable consumer devices and industrial control systems. When designing with this part, ensure that the 3-state enable pins are properly managed to avoid bus contention. Always deassert nOE before changing direction in bidirectional applications to prevent momentary short circuits. The VSSOP-8 package requires careful PCB layout for clean signal integrity at high data rates.
74LVC4245ABQ+118 - Octal Dual-Supply Translating Transceiver | Nexperia
The Nexperia 74LVC4245ABQ+118 is an octal dual-supply translating transceiver featuring non-inverting 3-state bus-compatible outputs in both send and receive directions, housed in a 24-pin DHVQFN (5.5x3.5) package with an exposed thermal pad. The device is designed to interface between a 3 V and 5 V bus in a mixed-voltage supply environment, providing bidirectional voltage translation across eight channels with a single direction-control input (DIR) and an output-enable input (OE). A HIGH on OE forces all outputs to a high-impedance state, allowing bus isolation when required. A voltage level translator is an interface IC that allows logic signals crossing different supply domains to communicate without damage or signal integrity loss. Within the broader hierarchy, the 74LVC4245A sits inside the bus transceiver family, which is itself part of the logic IC category, under the umbrella of interface ICs and integrated circuits. The "dual supply" qualifier means the IC carries two independent VCC rails: a 5 V rail (VCC(5V)) on the B-side and a 3.3 V rail (VCC(3V)) on the A-side. This dual-rail topology is the cornerstone feature that enables transparent translation between legacy 5 V peripherals and modern 3.3 V processors, FPGAs, and ASICs. Key features include eight bidirectional channels, ±24 mA output drive on the B-side, low-power CMOS construction, and an operating temperature range from -40 °C to +125 °C. The device accepts input voltages up to 5.5 V on the 5 V side while being powered by a 3.3 V rail, and it supports 3-state outputs that isolate either bus when disabled. The exposed-pad DHVQFN-24 package provides low thermal resistance, supporting sustained heavy drive loads without derating. Technically, the 74LVC4245A uses a wide-bandwidth pass-gate architecture that avoids the direction-switching dead time typical of discrete MOSFET translation circuits. The DIR pin sets the data flow from A to B (HIGH) or B to A (LOW), and the OE pin enables or three-states the outputs. Because the device is non-inverting, the A-side logic level is mirrored directly on the B-side and vice versa, simplifying firmware design. Typical applications include 3.3 V to 5 V bidirectional bus translation in mixed-voltage microcontroller systems, expansion bus isolation between processor and peripheral cards, and legacy interface bridging in industrial control, point-of-sale, and embedded computing platforms. A key design consideration when using this part is that the DIR pin must be driven by the controller that owns the bus, and the OE pin must be toggled to prevent bus contention during direction changes. Decoupling both VCC rails with 100 nF ceramic capacitors placed as close as possible to the IC pins is critical for clean translation at high edge rates. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not aggregated in the manufacturer datasheet.
74SSTUB32868 - 28-Bit to 56-Bit Registered Buffer | TI
The 74SSTUB32868 is a 28-bit to 56-bit registered buffer with address-parity test, designed by Texas Instruments for DDR2 memory modules. It operates at a VCC of 1.7V to 1.9V, making it suitable for low-voltage memory interfaces. The device is available in a 176-ball NFBGA (6x15 mm) package, offering a compact solution for high-density memory modules. A registered buffer is a type of logic device that latches address and control signals to reduce the electrical loading on the memory controller, enabling higher-speed and higher-capacity memory systems. In the hierarchy of memory interface components, the registered buffer sits between the memory controller and the DRAM devices, providing signal buffering and timing alignment. This function is critical in DDR2 and DDR3 modules where signal integrity and timing margins are paramount. Key features include a 1:2 configurable registered buffer topology, which allows one input to drive two outputs, effectively doubling the fan-out for address and control signals. The device also includes address-parity test functionality, which detects parity errors on the address bus, enhancing system reliability. The 176-ball NFBGA package provides excellent thermal and electrical performance, with a compact footprint suitable for space-constrained memory module designs. From a technical perspective, the 74SSTUB32868 uses SSTL_18 I/O standards, compatible with 1.8V memory interfaces. It supports differential clock inputs (CK and CK#) for precise timing, and includes a reset function for initialization. The device is designed to meet JEDEC standards for DDR2 registered DIMMs, ensuring interoperability with standard memory modules. Its low-voltage operation reduces power consumption, making it ideal for power-sensitive applications. Typical applications include DDR2 registered DIMMs, servers, workstations, and networking equipment where high memory capacity and reliability are required. The device is also used in embedded systems that demand robust memory interfaces. Its address-parity test feature is particularly valuable in mission-critical systems where data integrity is paramount. When designing with this device, ensure proper decoupling of the VCC and VDDQ supplies, and follow the layout guidelines in the datasheet to minimize signal skew. The differential clock inputs should be routed with controlled impedance to maintain timing accuracy.
74V2T04STR - Triple Inverter CMOS, SOT-23-8 | STMicroelectronics
The STMicroelectronics 74V2T04STR is a high-speed CMOS triple inverter fabricated in sub-micron silicon gate C2MOS technology with double-layer metal wiring, packaged in an 8-pin SOT-23 (Tape & Reel, STR suffix). It provides three independent single-stage inverting buffers in a single small-outline package, making it a logic-level building block for digital signal inversion in space-constrained designs. Key specifications from the manufacturer datasheet include a typical propagation delay tPD of 4.7 ns at VCC = 5 V, a low quiescent supply current, and balanced output drive capability of |IOH| = IOL = 8 mA minimum at VCC = 4.5 V. A CMOS inverter is the most fundamental building block of digital logic. It accepts a single binary input and produces the complementary binary output: a logic HIGH on the input produces a logic LOW on the output, and vice versa. The 74V2T04 integrates three such inverters into one package, replacing three discrete transistor pairs or three single-inverter packages, thereby reducing board area, BOM count, and propagation skew between channels. As a CMOS device, it sits within the broader hierarchy of logic gates -> combinational logic ICs -> standard logic family -> semiconductor. Key differentiating features include TTL-compatible input thresholds of VIH = 2 V (min) and VIL = 0.8 V (max), which allow direct interfacing with 5 V TTL logic without level translation; power-down protection on inputs that prevents back-feeding current when the device is unpowered; symmetrical output impedance for matched rise and fall times; and balanced propagation delay for predictable timing margins in synchronous paths. The C2MOS silicon-gate process provides inherent low static power dissipation, with quiescent ICC remaining low across the full VCC operating range. The architecture is a classic CMOS inverter pair (p-channel pull-up, n-channel pull-down) replicated three times. Each inverter output stage is sized for the 8 mA balanced drive specification, which is sufficient for driving moderate capacitive bus loads and short PCB traces. The 4.7 ns typical propagation delay at 5 V enables use in clock squaring, reset distribution, and signal buffering applications up to several tens of megahertz. Because all three channels share the same VCC and GND pins, decoupling must be placed close to those pins to suppress switching noise. Typical applications include logic-level inversion and clock buffering in portable and battery-powered devices, signal conditioning between 5 V TTL and 3.3 V CMOS domains, oscillator and crystal-clock signal inversion, watchdog reset pulse generation, and general-purpose glue logic in microcontroller-based embedded systems. The compact SOT-23-8 footprint makes it particularly well suited to hand-held, wearable, and space-constrained consumer designs. When designing with the 74V2T04STR, place a 100 nF ceramic decoupling capacitor as close as possible to the VCC pin, route input and output traces to minimize coupling, and ensure that the load capacitance does not exceed the device's drive capability to maintain the specified propagation delay. Unused inputs must be tied to VCC or GND; floating inputs on a CMOS device can drift to the linear region and cause quiescent current to rise. This page synthesizes distributor pricing, drop-in alternative listings across ST and competing logic families, and practical PCB-level design notes not found in the manufacturer datasheet.
74VHC165FT - 8-Bit PISO Shift Register, 16-TSSOP | Toshiba
The Toshiba 74VHC165FT is an 8-bit parallel-in/serial-out (PISO) shift register built on an advanced high-speed CMOS C2MOS silicon-gate process, offered in a 16-pin TSSOP (TSSOP16B) surface-mount package. It accepts parallel data on one rising or falling shift/load edge and serially shifts it out through Q7 or the complementary Q7' output, supporting clock frequencies up to the device's VHC-rated switching speed across a 2 V to 5.5 V supply range. The wide VCC range makes the part usable in both 3.3 V and 5 V logic families without level translation. A shift register is a sequential logic block that converts parallel data to a serial stream (PISO) or a serial stream to parallel data (SISO/PIPO). In the broader digital hierarchy it belongs to logic ICs → shift registers → CMOS logic → standard logic ICs. PISO shift registers like the 74VHC165FT are commonly used to expand microcontroller GPIO by reporting eight parallel inputs over a single serial pin, reducing board routing complexity in button/keypad scanning, multi-channel ADC front-ends, and display drivers. Key features include eight parallel inputs (D0-D7) with parallel load control (SH/LD'), a clock inhibit pin, asynchronous complementary serial outputs (Q7, Q7'), and standard CMOS low-power dissipation. The 74VHC165FT typically exhibits low quiescent current and high noise margin, making it suited for mixed-signal boards where analog and digital sections must coexist on the same supply. The TSSOP-16B footprint (also referred to as 16-TSSOP) is JEDEC-compliant and pin-compatible with industry-standard 74xx165 logic from other vendors. The architecture uses a master/slave flip-flop chain with asynchronous parallel-load steering logic. When SH/LD' is held LOW, the eight D inputs are asynchronously loaded into the register, overriding any serial activity; when SH/LD' is HIGH, the device shifts on each rising clock edge. The clock-inhibit (CK INH) and serial-data-in (SER) pins allow daisy-chaining multiple 74VHC165 devices for 16-, 24-, or 32-bit input expansion over a single serial line. Typical applications include industrial PLC digital-input modules, keyboard matrix scanners, multi-channel switch-monitor front-ends, LED driver shift chains (when paired with companion PIPO parts), and automotive body-control modules. The wide operating temperature and CMOS noise immunity make it a strong fit for factory-automation and instrumentation. When designing with this device, observe the SH/LD' pulse width (tW) and clock-to-Q propagation delay (tpd) in your timing budget; the asynchronous parallel load is the fastest way to capture a snapshot of the eight inputs but must be glitch-free. Add a small RC on SH/LD' if mechanical switches are wired directly to D inputs. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the manufacturer datasheet to help engineers select and source the 74VHC165FT quickly.
74VHC373MTCX - Octal D-Type Latch, 3-STATE, TSSOP-20 | onsemi
The onsemi 74VHC373MTCX is an advanced high-speed CMOS octal D-type transparent latch with 3-STATE outputs, fabricated with silicon-gate CMOS technology, housed in a 20-pin TSSOP package (MTC suffix). It achieves high-speed operation similar to equivalent bipolar Schottky TTL while maintaining CMOS-class low power dissipation. The device features eight D-type latches with separate latch-enable (LE) and output-enable (OE) controls, configured as an 8-bit transparent latch with non-inverting outputs and high-impedance output capability. A D-type transparent latch is a sequential logic element that captures data on its D inputs when the latch-enable signal is asserted, and holds that data on the Q outputs when LE is de-asserted. The 3-STATE outputs allow multiple devices to share a common bus, controlled by the OE pin. In the broader system hierarchy, the 74VHC373 belongs to the 74VHC logic family of high-speed CMOS logic, itself part of the larger CMOS logic IC family used for glue logic, bus buffering, and address/data demultiplexing in digital systems. Key specifications include a wide 2.0 V to 5.5 V VCC operating range, typical propagation delay of approximately 5 ns at 5 V, low quiescent current, and high output drive capability. The output structure is non-inverting, making it well suited to bus-driving applications where input and output polarities must match. An internal static-guard design provides ESD protection on every input and output pin. Typical applications include address/data bus demultiplexing in microcontroller and microprocessor systems, bus arbitration and bidirectional buffering, register file building blocks, I/O port expansion, and general-purpose storage elements in digital logic designs. The TSSOP-20 footprint makes it attractive for compact, surface-mount assemblies where board space is constrained. When designing with this part, ensure that the OE pin is correctly driven to avoid bus contention when multiple 74VHC373 devices share a common output bus. Decoupling the VCC pin with a 0.1 µF ceramic capacitor placed within a few millimeters of the package is recommended for reliable high-speed operation. This page synthesizes distributor pricing, verified cross-reference drop-in alternatives, and practical design notes beyond what is presented in the manufacturer datasheet.
74VHC373TTR - Octal D-Type Latch, 3-State, TSSOP-20 | STMicroelectronics
The STMicroelectronics 74VHC373TTR is an advanced high-speed CMOS octal D-type transparent latch with 3-state outputs, housed in a 20-pin TSSOP package delivered on Tape & Reel (suffix "TR"). According to the manufacturer datasheet, it features a typical propagation delay of 5.0 ns at VCC = 5 V, a maximum quiescent supply current (ICC) of 4 µA at TA = 25 °C, balanced propagation delays (tPLH ≈ tPHL), symmetrical output impedance of |IOH| = IOL = 8 mA minimum, and high noise immunity (VNIH = VNIL = 28% VCC minimum). It operates across VCC = 2.0 V to 5.5 V, making it directly compatible with both 3.3 V and 5 V logic rails, and is pin- and function-compatible with the legacy 74 series 373 to ease migration paths. A D-type transparent latch, in this product category, is a bistable memory element that captures data on its D input when the latch-enable (LE) pin is asserted HIGH and holds the last captured value when LE is de-asserted LOW. Octal variants integrate eight such latches into a single 20-pin package with a common LE and a common Output Enable (OE), making them ideal for bus-oriented designs where multiple data lines must be captured simultaneously and then tri-stated for sharing with other devices. Latches belong to the broader logic IC family (74-series), which descends from 74xx TTL and has been re-implemented in CMOS, HC, HCT, VHC, and AHC process generations offering progressively lower power and higher speed. The 74VHC373TTR's silicon-gate CMOS fabrication provides improved latch-up immunity over older HC implementations while preserving pin-out equivalence to the 74HC373, 74HCT373, and original bipolar 74373. Power-down protection on the inputs prevents back-drive current when VCC is removed, an essential feature for hot-swap and mixed-voltage systems. The output stage is optimized for balanced drive (8 mA source/sink), allowing direct interface with low-impedance bus lines without external buffers. Typical applications include microprocessor data-bus demultiplexing, address latching for memory expansion (SRAM, DRAM, EPROM), I/O port expansion via 74-series logic, holding registers in DSP pipelines, and bus-isolation between masters and slaves in shared-bus architectures such as the classic 8086/8088 or modern MCU GPIO expansion. When designing with the 74VHC373TTR, ensure that LE and OE timing satisfy the setup (ts) and hold (th) requirements listed in the datasheet's switching characteristics table to avoid race conditions in transparent-latch mode. Avoid leaving inputs floating; tie unused D inputs to VCC or GND through a resistor to prevent unintended ICC rise from floating CMOS gates. This page consolidates distributor pricing, drop-in alternatives, and practical design guidance not found on the manufacturer's product page.
AD5291BRUZ-20 - 20kΩ 256-Position SPI Digital Potentiometer | ADI
The Analog Devices AD5291BRUZ-20 is a single-channel, 256-position digital potentiometer with 20 kΩ end-to-end resistance, nonvolatile memory (NVM) and an SPI serial interface, housed in a 14-pin TSSOP (RU-14) package. According to the ADI AD5291/AD5292 datasheet, this part combines ±1% R-tolerance accuracy with 20-time-programmable (20-TP) memory, allowing wiper settings to be retained through power cycles without an external EEPROM. Headline parameters include 256 tap positions, 20 kΩ nominal resistance, ±1% resistor tolerance, and an SPI-compatible digital interface operating from a single 2.7 V to 5.5 V analog supply plus a 1.7 V to 5.5 V logic supply. A digital potentiometer (often abbreviated digi-pot or RDAC) is a digitally controlled variable resistor that emulates a mechanical potentiometer through a tapped resistor ladder switched by MOSFET transistors. It belongs to the broader category of digital-to-analog converters (DAC) used for resistance, which in turn sits within data-acquisition and signal-conditioning components. Compared to mechanical trimmers, a digi-pot offers remote adjustment, no mechanical wear, and software-controlled calibration. Key features of the AD5291BRUZ-20 include ±1% end-to-end resistance tolerance, a low 5 ppm/°C nominal temperature coefficient, 256 uniform tap points with 5 V/5.5 V single-supply operation, and a 20-time-programmable nonvolatile memory for storing the wiper position through power-down. The part also integrates a hardware RESET pin and software reset command that reloads the most recently programmed 20-TP memory location, plus a power-on refresh circuit that reinitializes the wiper on supply ramp. The internal architecture is a precision thin-film resistor ladder with CMOS transmission-gate switches, driven by an internal RDAC register. A separate 20-bit (AD5291) or 50-bit (AD5292) EEPROM cell stores the user-programmed wiper position. The SPI interface supports daisy-chaining of multiple devices via a dedicated SDO pin, and the logic supply range of 1.7 V to 5.5 V permits direct connection to 1.8 V, 3.3 V, or 5 V microcontrollers without level shifters. Typical applications include programmable gain amplifiers and transimpedance amplifiers, precision reference voltage trimming in instrumentation, audio volume and tone control, LCD display contrast adjustment, programmable filter cutoff and oscillator tuning, and industrial 4–20 mA loop calibration. The TSSOP-14 footprint is friendly to handheld and portable designs where board area is constrained. When designing with this device, observe the absolute maximum analog supply voltage of 6.5 V and keep the logic supply within 1.7 V to 5.5 V. Bypass VDD and VL with 0.1 µF capacitors placed within 5 mm of the supply pins, and reserve a small footprint for an optional 1 µF bulk cap on VDD if the supply is noisy. This page synthesizes distributor pricing, drop-in alternatives sourced from the AD5291 family and competitor cross-reference, and practical design notes not found in the manufacturer datasheet alone, helping engineers select and qualify the AD5291BRUZ-20 faster.
ADG431BRZ-REEL7 - Quad SPST 24Ohm Analog Switch | Analog Devices
The ADG431BRZ-REEL7 from Analog Devices is a monolithic CMOS analog switch IC containing four independently selectable SPST (single-pole single-throw) switches. Fabricated on the enhanced LC2MOS process, it combines low power dissipation with high switching speed and low on-resistance of 24 ohms maximum. Each switch conducts equally well in both directions when ON and turns on with a logic LOW on its control input. The device is supplied in a 16-pin SOIC package on tape and reel (REEL7) for automated surface-mount assembly. An analog switch IC is a semiconductor device that selectively connects or disconnects an analog signal path under digital control, replacing mechanical relays with faster, smaller, more reliable solid-state switching. Analog switches sit within the broader hierarchy of signal routing components: analog switch, multiplexer/demultiplexer, signal conditioning IC, and mixed-signal semiconductor. The ADG431 belongs to the ADG431/ADG432/ADG433 precision quad SPST family, which differs only in control-input logic polarity. Key features include the 24 ohm maximum on-resistance with low on-resistance flatness, glitch-free switching that suppresses charge-injection transients during state changes, bidirectional signal capability, and an operating temperature range of -40C to +85C for industrial environments. The LC2MOS process merges CMOS logic with linear Bipolar-grade analog capability, delivering fast transition times with microamp-level quiescent power consumption, ideal for battery-operated and high-density designs. Typical applications include audio and video signal routing, data acquisition channel selection, communication-system signal switching, and automated test equipment. Its low on-resistance minimizes insertion loss, while fast switching supports high channel-scan rates in multiplexed ADC front ends. When designing with this part, account for on-resistance-induced attenuation in series with source impedance, and observe supply-voltage limits. Note the active-LOW control logic: if your firmware assumes active-HIGH switching, the ADG432 is the logic-compatible family alternative in the identical SOIC-16 pinout.
ATF16V8B-10JC - 10ns 8-Macrocell EEPLD | Microchip Technology
Microchip Technology ATF16V8B-10JC is a 5 V electrically erasable programmable logic device (EEPLD) with 8 macrocells, 16 inputs, 8 I/O outputs, 250 gates, and a 10 ns propagation delay in a 20-pin PLCC (9x9) surface-mount package. It implements industry-standard 20-pin PAL-compatible architectures and supports complex combinational or registered logic without replacing the device after each configuration change. An EEPLD is a programmable-logic IC that stores its logic configuration in electrically erasable nonvolatile memory. Within the product hierarchy, an EEPLD is a simple PLD, a type of programmable-logic device and a semiconductor. Its practical advantage over a fuse-programmed PAL is field programmability: the ATF16V8B family can be configured and reprogrammed, making it suitable for prototypes, legacy product refreshes, and small control systems whose logic requirements may evolve. Key features include a 10 ns speed grade, eight macrocells with eight product terms per output, and three operating modes selected automatically by software. The manufacturer describes the device as a 250-gate, standard-power, green-package part with a 5 V supply. It emulates many 20-pin PAL devices and most 20-pin combinatorial PLDs, reducing the need for a redesign when consolidating older programmable-logic implementations. The ATF16V8B architecture supports flexible input and output assignments through its fuse map. Unlike a general-purpose microcontroller, the part executes only the Boolean equations placed into its macrocells, so its behavior is deterministic and does not require a clock when configured for combinational operation. Registered configurations can add sequential logic while retaining the compact 20-pin footprint and simple programming workflow. Typical uses include industrial automation, interface decoding, control-panel logic, telecommunications infrastructure, and consumer-equipment glue logic. The part is especially relevant to systems that previously used 20-pin PALs or simple GAL devices. Engineers should preserve the exact fuse map and verify package pin orientation during replacement, since logic configuration compatibility is as important as electrical and pin compatibility. The main design consideration is that a drop-in package does not guarantee identical behavior after programming. The replacement device must use a compatible JEDEC fuse map, and any pin-preset configuration, registered-logic mode, power-up behavior, and unused-pin treatment must be checked against the original design. This page combines verified manufacturer and distributor information with practical selection and replacement guidance.
ATF16V8B-10JI - 250-Gate 10 ns Flash PLD | Microchip
Microchip ATF16V8B-10JI is a 250-gate, electrically erasable programmable logic device with 8 macrocells, 16 inputs, 8 configurable I/Os, a 10 ns propagation delay, and a 5 V supply. The device is supplied in a 20-lead J-lead PLCC (QCCJ) surface-mount package measuring 9 x 9 mm and graded for industrial-temperature applications. An EEPLD is a programmable logic device that uses nonvolatile electrically erasable Flash memory to retain a configured logic function. Within the broader semiconductor hierarchy, the ATF16V8B belongs to the PLD and CPLD family, combining a PAL-compatible 16V8 architecture with eight output macrocells. It is intended for compact control, decoding, interface, and glue-logic designs where a small logic footprint and nonvolatile configuration are valuable. Key features include support for up to 16 inputs, eight configurable I/O outputs, and eight product terms allocated to each output. Three operating modes are selected automatically by the configuration software, allowing the device to implement registered, complex, or combinatorial logic without manual mode-control wiring. The electrically erasable architecture permits reprogramming while the individual architecture includes standard power-saving options for systems that do not require continuous maximum performance. The ATF16V8B architecture provides a superset of generic 16V8 and common 20-pin combinatorial PLD arrangements. Each of its eight outputs can be assigned eight product terms, supporting compact equations that combine multiple input conditions in one programmable block. The 10 ns speed grade is suitable for moderate-speed control logic, while the underlying family is also described as offering a maximum pin-to-pin delay of 7.5 ns under specified test conditions. Typical uses include legacy peripheral decoding, industrial control sequencing, status and interrupt logic, programmable address selection, and glue logic around microcontrollers or processors. Because the ATF16V8B is a 5 V device, it should be evaluated carefully in modern mixed-voltage systems where 3.3 V or 1.8 V interfacing may require level translation. Its J-lead PLCC package also occupies more board area than a comparable fine-pitch surface-mount PLD. When laying out a replacement design, preserve the exact pin assignments and programming architecture of the installed ATF16V8B-10JI. Confirm power sequencing, output drive requirements, unused-pin treatment, and the commercial programming algorithm supported by the selected device programmer. The industrial-temperature suffix must also remain consistent with the original bill of materials and qualification requirements. This product record combines verified manufacturer and distributor information with application guidance, package details, and drop-in substitution criteria that are not consolidated in a single manufacturer datasheet. It emphasizes verified constraints such as the 5 V supply, 10 ns speed grade, 8-macrocell architecture, and 20-lead PLCC footprint so engineers can compare replacements without confusing functionally similar devices with pin-compatible alternatives.
ATF16V8B-10PC - Programmable Logic Device | Atmel
The Atmel ATF16V8B-10PC is a programmable logic device identified by the ATF16V8B family name and the -10PC ordering suffix. The verified product-page retrieval supplied for this MPN contains no manufacturer specifications, package details, electrical ratings, pricing, or lifecycle statement, so those values cannot be stated reliably on this page. The ATF16V8B designation is associated with the Atmel ATF16V8B family of simple programmable logic devices, but the exact device configuration, pin assignments, and commercial ordering data require confirmation from the original manufacturer documentation. A programmable logic device is a digital semiconductor used to implement fixed or configurable Boolean logic functions. These devices occupy a position between basic logic gates and programmable logic arrays in the broader integrated-circuit hierarchy. Unlike a microcontroller, a conventional programmable logic device generally does not execute application software; instead, its internal programmable connections are configured to realize a logic function such as decoding, gating, counting, multiplexing, or control sequencing. The ATF16V8B family is commonly associated with classic PLD-style architectures, while the precise architecture of this exact ordering code is not documented in the supplied retrieval. The -10 suffix in many Atmel ordering codes identifies a speed grade, and PC denotes the ordering package or temperature-related code in many device families. Those conventions cannot be applied to ATF16V8B-10PC without verification because the supplied search result did not expose a datasheet or product table. The same restriction applies to supply voltage, I/O type, output current, operating temperature, propagation delay, programming interface, memory technology, and package dimensions. Those values are intentionally left as data requests in the specifications table rather than inferred from similarly named parts. ATF16V8B-10PC may be considered for legacy digital control, industrial interface, glue-logic, and embedded system designs where a compact PLD can replace multiple fixed gates or older programmable devices. Before placing it in new production equipment, engineers should confirm availability, lifecycle status, programming-tool support, electrical compatibility, and the exact pinout. A modern MCU or FPGA should be considered when field programmability, extensive serial interfaces, larger logic capacity, or a supported software toolchain is required. The most important design step is to obtain the original ATF16V8B datasheet and compare its package drawing, programming architecture, and electrical limits with the PCB footprint. The supplied data does not identify whether the package uses PLCC, ceramic DIP, or another mechanical format, and no pinout can therefore be published safely. Likewise, existing board replacement is possible only after comparing every power, ground, input, output, clock, and programming pin rather than relying on the family name alone. This page distinguishes confirmed identity from missing technical evidence and does not convert unresolved parameters into assumptions. It also provides selection questions, sourcing guidance, and qualification criteria that help engineers determine whether ATF16V8B-10PC remains appropriate for a legacy design. The most reliable next step is to request the manufacturer datasheet, current distributor record, programming specification, and lifecycle notice for the exact MPN before committing a new production run.
ATF16V8B-10PI - 10 ns 16V8 EEPLD | Microchip Technology
The Microchip Technology ATF16V8B-10PI is a 10 ns, 5 V electrically erasable programmable logic device with 250 gates, 8 macrocells, up to 16 inputs, and 8 configurable I/O outputs, housed in a 20-pin PDIP package. It is designed for industrial-temperature applications requiring configurable combinational or registered logic in a compact, electrically reprogrammable architecture. An electrically erasable programmable logic device, or EEPLD, is a semiconductor that stores its configured logic in nonvolatile memory. The ATF16V8B belongs to the broader PLD hierarchy: EEPLD > programmable logic device > digital logic IC. Its electrically erasable architecture permits the device to be reprogrammed during development, simplifying logic changes without manufacturing a new mask or using one-time-programmable fuse technology. The ATF16V8B-10PI provides a 10 ns propagation delay, 250-gate logic capacity, 8 macrocells, and up to 16 inputs with 8 configurable I/O outputs. Each of the eight outputs can be assigned eight product terms. Three operating modes are selected automatically by programming software, allowing the same device to implement simple combinational functions or more complex registered logic while preserving a conventional 20-pin PAL-style interface. Technically, the device uses high-performance CMOS circuitry and electrically erasable Flash-memory technology rather than one-time-programmable fuses. The architecture is a superset of generic 16R8 devices and can directly replace many 20-pin combinatorial PLDs. The 20-pin PDIP package, with 7.62 mm lead spacing, supports conventional through-hole PCB assembly and is appropriate for legacy industrial control, interface decoding, and embedded logic designs where surface-mount packages are unnecessary. Typical uses include industrial control interfaces, legacy peripheral decoding, address and command translation, custom combinational logic, and small registered control functions. Its reprogrammability is particularly useful during prototyping, system bring-up, and maintenance revisions. For new high-volume designs, however, engineers should evaluate whether a microcontroller, a current CPLD, or a small FPGA offers better software flexibility and longer-term sourcing. When designing around the ATF16V8B-10PI, account for the 5 V supply requirement, confirm that the selected GAL-style fuse map or device architecture matches the programmed equations, and validate all unused I/O states. Because the part is a legacy through-hole PLD, supply continuity, programming-tool support, and second-source availability deserve verification before committing to a production design. This page consolidates verified manufacturer and distributor information, same-package replacement candidates, pricing status, pin mapping, and practical design guidance. It also distinguishes genuine drop-in device options from functional alternatives, helping engineers assess legacy support without relying on raw catalog listings alone.
ATF16V8B-10SC - 10ns 250-Gate EEPLD | Microchip
The Microchip Technology ATF16V8B-10SC is a 250-gate electrically erasable programmable logic device with eight macrocells, up to 16 inputs, eight I/Os, and a 10 ns speed grade in a 20-pin SOIC package. It operates from a 5 V supply and provides a surface-mount implementation of the ATF16V8B architecture. An electrically erasable programmable logic device, or EEPLD, is a semiconductor that stores a defined Boolean logic configuration in nonvolatile erasable memory. The ATF16V8B family belongs to the broader hierarchy of PLD, programmable logic IC, logic IC, and integrated circuit categories. Its architecture supports combinatorial and registered logic functions, making it useful when fixed Boolean control logic can replace multiple discrete gates. Three headline characteristics define this device: eight macrocells provide the programmable logic capacity, the 10 ns grade supports higher-speed operation than slower PAL-compatible grades, and the 20-pin SOIC package supports compact surface-mount assembly. The family-level product information identifies a standard-power 5 V device with a green package, up to 16 inputs, and eight I/Os. The ATF16V8B architecture is designed to supersede generic 16R8 and many 20-pin combinatorial PLD arrangements. Each output can receive multiple product terms, while configurable operating modes provide flexibility for registered, combinatorial, and complex logic implementations. The family documentation also identifies compatibility with established GAL16V8-style pin and fuse-map conventions, allowing engineers to evaluate it as a migration option for older programmable logic devices. Typical uses include industrial control logic, interface decoding, sequencing, signal conditioning, and compact embedded systems that require a small number of deterministic Boolean functions. The ATF16V8B-10SC is particularly appropriate where a surface-mount 20-pin package, 10 ns timing grade, and electrically erasable configuration are preferable to a one-time-programmable PAL device. Designers should verify the exact fuse map, pin assignment, timing limits, supply tolerances, and programming-device support against the manufacturer datasheet before replacing an installed GAL16V8 or PAL device. PCB layout must also preserve the specified SOIC-20 footprint and suitable power and ground distribution. This product page consolidates the verified manufacturer and distributor information, compares compatible ATF16V8-family candidates, and highlights programming and replacement considerations that are not apparent from a distributor category listing alone.
ATF16V8B-10SI - 10ns 250-Gate Erasable PLD | Microchip
The Microchip ATF16V8B-10SI is a 10 ns, electrically erasable programmable logic device in a 20-SOIC package. It provides 250 gates, up to 16 inputs, 8 I/Os, and 8 macrocells for compact combinational logic implementations. The device operates from a 5 V supply in the standard-power Green package and is identified by the industrial-temperature ordering code. Its electrically erasable architecture supports device reprogramming without UV erasure, while its macrocell structure accommodates the generic 16R8 architecture and many 20-pin combinatorial PLDs. According to the manufacturer ATF16V8B datasheet, each output is allocated eight product terms and three operating modes are selected automatically by software. These characteristics make the ATF16V8B-10SI useful for legacy interface control, decoder, address translation, glue logic, and industrial automation functions where a compact, programmable 5 V logic solution is preferred over a larger FPGA. The 10 ns speed grade supports applications requiring deterministic combinational propagation, although final system timing must also account for interconnect delay, setup time, hold time, and peripheral timing. The ATF16V8B family is documented as pin-to-pin and JEDEC fusemap compatible with suitable GAL16V8 devices, which simplifies migration when a programmed GAL device is being replaced. The ATF16V8B-10SI is suitable for legacy control systems, factory automation, embedded equipment, and compact interface adapters. Design engineers should preserve the GAL16V8 fusemap and verify programming-tool support, power timing, and unused-pin behavior against the manufacturer datasheet before production release.
ATF16V8B-15JC - 15ns 8-Macrocell EEPLD | Microchip Technology
The Microchip Technology ATF16V8B-15JC is a 15 ns, 8-macrocell electrically erasable programmable logic device with a 20-pin PLCC (9x9) package. It operates from a 5 V supply, provides up to 16 inputs and 8 configurable I/O paths, and offers approximately 250 gates of logic capacity. Its electrically erasable Flash memory architecture allows the programmed configuration to be erased and rewritten, distinguishing it from one-time-programmable fuse-based PAL devices. An EEPLD is a programmable logic device that stores a Boolean logic configuration in nonvolatile memory. Within the product hierarchy, an EEPLD is a form of PLD, which belongs to the broader semiconductor and digital-logic IC category. The ATF16V8B architecture emulates many 20-pin PAL devices and is suitable for implementing combinational and registered control logic where a small programmable device is preferable to a larger microcontroller or FPGA. Key features include a 15 ns speed grade, 8 macrocells, up to 16 inputs, 8 I/O paths, 5 V operation, and 250-gate equivalent logic capacity. Each output is allocated eight product terms according to the ATF16V8B family documentation. The 20-pin PLCC package provides a compact surface-mount option for industrial and legacy logic designs, while the electrically erasable configuration supports programming and design revisions. The ATF16V8B family uses a CMOS architecture and Flash-based configuration memory. The 15 ns suffix identifies a speed grade within the family, whose documented speeds extend down to 7.5 ns. Compared with discrete gate arrays or multiple conventional logic ICs, a single PLD can consolidate decoder, control, and state-transition logic into one programmable package. Exact AC timing, DC limits, and operating-temperature limits should be confirmed in the manufacturer datasheet for the selected ordering code. Typical uses include legacy peripheral control, address decoding, command sequencing, industrial controller glue logic, and system-interface decoding. It is particularly relevant when an existing board uses a 20-pin PAL-compatible architecture and the replacement must retain the JEDEC-compatible fuse map while adding electrically erasable reprogramming. For new designs, verify programmer support, pinout, timing, and output-mode requirements before replacing an existing GAL16V8 or PAL device. A footprint-compatible part is not automatically function-compatible unless its fuse map, macrocell structure, power behavior, and timing meet the original design requirements. This page combines verified manufacturer and distributor information with a focused alternative comparison and engineering guidance. It distinguishes confirmed package and timing information from parameters that still require verification, helping engineers distinguish a board-level drop-in candidate from a merely functional alternative.
ATF16V8B-15JI - 15ns 8-Macrocell EEPLD | Microchip Technology
The Microchip Technology ATF16V8B-15JI is a 15 ns, 5 V electrically erasable programmable logic device with 8 macrocells, up to 16 inputs, 8 I/Os, and 250 gates in a 20-pin PLCC package measuring 9 x 9 mm. The ATF16V8B architecture implements registered, combinatorial, and complex-programmable operating modes selected automatically by programming software. An EEPLD is a semiconductor that stores a logic configuration in nonvolatile electrically erasable memory. In the broader hierarchy, it is a programmable logic device, a digital integrated circuit, and ultimately a general-purpose logic semiconductor. Unlike a mask-programmed PAL, the ATF16V8B can be reprogrammed during development, production, or field maintenance without changing the integrated-circuit mask. The ATF16V8B-15JI provides eight outputs, with each output allocated eight product terms, allowing the same device to implement many conventional 20-pin PAL arrangements. Its 15 ns speed designation is suitable for legacy control, decoding, address mapping, interface conditioning, and general glue-logic functions. The manufacturer describes the device as a standard-power, 5 V, green-package EEPLD with as many as 16 inputs and 8 I/Os. Technically, the device combines a reusable Flash-based configuration memory with a combinational logic array and configurable output registers. Software automatically configures the appropriate architecture, reducing the need to design around a fixed PAL fuse pattern. The ATF16V8B family also provides a superset of generic 16R8 and many 20-pin combinatorial PLD architectures, making it useful for consolidating multiple legacy devices onto one programmable footprint. Typical applications include industrial control-panel decoding, legacy peripheral-interface glue, programmable address decoding, general bus conditioning, and compact logic consolidation. Because the ATF16V8B is a 5 V device, system-level compatibility should be checked carefully when it interfaces with modern 3.3 V devices; the verified product data does not specify mixed-voltage interface tolerance. Designers should preserve the original JEDEC-compatible pin arrangement, use the appropriate Microchip programming tool, and include an unobstructed programming interface in the PCB layout. Before replacing an older PAL or GAL, verify the macrocell architecture, registered versus combinatorial outputs, pinout, propagation delay, and power-up behavior rather than relying only on package dimensions. This product page combines verified manufacturer and distributor attributes, pin-compatible replacement analysis, practical legacy-logic design guidance, and structured comparisons. Those engineering details help distinguish a true drop-in replacement from a merely similar EEPLD and support faster sourcing and design verification.
ATF16V8B-15PC - 15 ns 250-Gate EEPLD | Microchip Technology
The Microchip Technology ATF16V8B-15PC is a high-performance CMOS electrically erasable programmable logic device with a 15 ns speed grade, 250 programmable gates, up to 16 inputs, 8 I/Os, and a 20-pin PDIP package. It combines the familiar 16V8 PLD architecture with electrically erasable Flash memory technology, allowing the programmed configuration to be erased and rewritten instead of permanently fused. An EEPLD is a simple programmable logic device within the broader programmable-logic-device hierarchy. Unlike a mask-programmed or one-time-programmable PAL, an EEPLD retains its configuration in nonvolatile Flash memory and can be updated during design, prototyping, or field maintenance. The ATF16V8B family is intended for compact combinatorial and registered logic implementations where a small gate count and familiar 20-pin architecture are advantageous. Key features include a 250-gate equivalent capacity, as many as 16 inputs, eight configurable I/O paths, 5 V operation, and a 15 ns device rating. The ATF16V8B family also provides speed options down to 7.5 ns, while the selected ATF16V8B-15PC variant is identified by the 15 ns suffix. Its electrically erasable Flash configuration permits design revisions without replacing the device. The ATF16V8B architecture supports software-selected operating modes and is intended to emulate common 16R8 devices and many 20-pin combinatorial PLDs. Eight outputs are allocated eight product terms each, allowing the device to implement multiple sum-of-products functions and registered logic in a compact package. A microchip product page describes the device as a 250-gate, standard-power, green-package EEPLD with a 5 V supply and up to 16 inputs. Typical applications include industrial control logic, legacy peripheral emulation, address decoding, interface decoding, glue logic, counter and state-machine implementations, and compact control panels. The ATF16V8B-15PC is especially useful when an existing design uses a 20-pin PAL-style footprint and the new design benefits from a rewritable configuration memory. The principal engineering consideration is timing. The 15 ns suffix denotes a defined speed grade, but board-level setup, hold, interconnect delay, and output loading must be included in timing analysis. Existing PAL or GAL footprints should also be checked against the Microchip replacement guidance because electrical characteristics are similar but may contain minor differences. This page combines verified manufacturer and distributor information, a same-package replacement assessment, and practical selection guidance. It distinguishes documented facts from parameters that still require confirmation from the full manufacturer datasheet, helping engineers evaluate the ATF16V8B-15PC without relying on an incomplete distributor summary.
ATF16V8B-15PI - 15 ns 5V 8-Macrocell PLD | Microchip Technology
Microchip Technology ATF16V8B-15PI is a 15 ns, 5 V, 8-macrocell electrically erasable programmable logic device in a 20-pin PDIP package. The device provides 250 gates, supports as many as 16 inputs and 8 I/Os, and combines CMOS PLD operation with electrically erasable Flash memory. Its 20-pin through-hole package supports direct insertion into conventional PAL-compatible sockets and PCB layouts. An electrically erasable programmable logic device, or EEPLD, is a semiconductor that stores configurable digital logic functions in nonvolatile memory. Within the broader hierarchy, an EEPLD is a programmable logic device, a form of digital logic IC, and ultimately a general-purpose semiconductor. Unlike a mask-programmed mask ROM or one-time-programmable fuse device, the ATF16V8B-15PI can be erased and reprogrammed while retaining its logic implementation between operating cycles. The ATF16V8B family provides 8 macrocells and 250 gates, with configurable operating modes selected by software according to the required input and output equations. Maximum propagation delay is 15 ns for the ATF16V8B-15PI designation, making it suitable for control, decoding, address translation, interface adaptation, and general combinational or registered logic. The device operates from a single 5 V supply and is offered in a green 20-PDIP package. The 16V8 architecture supports up to 16 inputs and 8 outputs, allowing it to implement many common 20-pin PAL arrangements. Eight product terms are allocated to each output in the applicable operating mode. Because the device uses electrically erasable Flash memory, designers can reuse a programmed part during development or update its configuration without relying on one-time fuse programming. Typical uses include industrial control logic, legacy peripheral-interface adapters, programmable I/O expansion, decoding functions, and compact glue-logic implementations. The 15 ns timing class is useful where propagation delay matters, although exact system timing must still be checked against the programmed architecture and external load conditions. The same 20-pin footprint can simplify repairs or modernization of boards designed around compatible 16V8 PLDs. The primary design consideration is physical and functional compatibility rather than package interchange alone. Confirm the pinout, active levels of CE and OE, registered versus combinatorial configuration, supply voltage, and timing limits before substituting another part. Firmware and programming files must also be reviewed because equivalent pin assignments do not necessarily guarantee identical macrocell behavior or timing margins. This page combines verified manufacturer and distributor information, drop-in candidate screening, package-level comparison, and practical replacement guidance. It distinguishes verified device facts from unavailable pricing, lifecycle, compliance, and detailed timing fields, making the resulting selection guidance more useful for engineering review than a raw distributor listing alone.
ATF16V8B-15PU - 15 ns 8-Macrocell 5V PLD | Microchip
The Microchip ATF16V8B-15PU is a 15 ns, 5 V, electrically erasable programmable logic device with eight macrocells, up to 16 inputs, eight I/Os, and eight registered outputs in a 20-pin PDIP package. It emulates the industry-standard 20-pin PAL architecture and provides 250 gates for compact legacy control, decoding, address-selection, and interface logic. A simple programmable logic device, or SPLD, combines programmable AND-array routing with fixed OR logic in a small CMOS package. Within the broader hierarchy, the ATF16V8B belongs to PLD, simple programmable logic, digital logic IC, and semiconductor categories. Its electrically erasable Flash configuration supports nonvolatile logic, while the -15 designation identifies the verified 15 ns device used where faster propagation timing than slower legacy options is useful. Key verified features include eight macrocells and a 250-gate equivalent capacity. The device supports as many as 16 inputs and eight I/Os, with eight registered outputs identified by distributor data. It operates from a nominal 5 V supply in a green package and uses electrically erasable Flash memory rather than fuse technology. Microchip also describes the ATF16V8B family as a superset of generic 16R8 architectures and as suitable for direct replacement of common 20-pin combinatorial PLDs, subject to logic, timing, and package checks. The ATF16V8B architecture gives each output eight allocated product terms and offers automatically configured operating modes for implementing comparatively complex logic. The 15 ns part is appropriate for legacy 5 V systems where logic depth, decoding latency, and compact implementation matter more than modern FPGA integration. A search result also identifies 62 MHz for this family, but the supplied data does not reconcile that figure with the 15 ns propagation grade, so it should not be treated as a guaranteed system-frequency specification without the full datasheet timing conditions. Typical uses include GAL16V8-compatible replacements, address and chip-select decoding, bus-interface qualification, industrial controller glue logic, keyboard or display decoding, and compact control sequencers. Programming normally requires a compatible JEDEC file, ATF16V8B device selection, and an electrically erasable PLD programmer such as TL866II+ with suitable adapter hardware. Designers should verify pinout, package, supply voltage, AC timing, and JEDEC fuse-map compatibility before substitution. The P suffix indicates the verified PDIP-20 mechanical option, so it must not be confused with PLCC or other ATF16V8 packages. Programming settings, output polarity, register bypass, and unused pins should be validated against the manufacturer datasheet and programmer documentation. This page combines verified Microchip family data, distributor specifications, GAL16V8 replacement guidance, commercial availability, and design-oriented replacement checks to provide engineering context beyond a basic distributor listing.
ATF16V8C-5JX - 5ns EECMOS PLD, 8 Macrocells | Microchip
The Microchip ATF16V8C-5JX is a 5 ns EECMOS programmable logic device with 8 macrocells, a 250-gate architecture, and a 20-pin PLCC package. It operates from a 5 V supply and includes an optional pin-controlled power-down function capable of reducing total supply current below 100 uA. The device supports eight outputs, each allocated eight product terms, and provides three software-configurable operating modes for implementing complex combinational logic. An EECMOS PLD is a member of the programmable logic device hierarchy, combining a configurable logic architecture with nonvolatile electrically erasable flash memory. Unlike a fixed-function logic gate array, the ATF16V8C allows the interconnections and registered output behavior to be programmed after manufacture. This family is based on the Atmel-proven EECMOS architecture and is positioned between simple fixed AND-OR logic and larger field-programmable gate arrays. The ATF16V8C incorporates a superset of generic 16R8 architecture, allowing direct replacement for the 16R8 family and most 20-pin combinatorial PLDs. Its 5 ns speed grade supports demanding control logic, while the available 166 MHz maximum operating frequency provides a useful figure for high-speed system timing. An optional power-down input can be assigned to device pin 4; when enabled and asserted, output data and internal logic states are latched and held. The ATF16V8C is specified for operation from 5 V, with industrial and commercial supply tolerances identified in the manufacturer documentation. The available product information identifies a commercial operating range from 0 C to 70 C and a standard-power 5 ns configuration. Its 20-pin PLCC package is suitable for legacy and industrial control systems where ceramic leaded-chip-carrier footprints and programmable logic are established requirements. Typical uses include industrial controller address decoding, state-machine implementation, peripheral interfacing, signal qualification, and compact combinational control networks. The eight-output structure makes the device useful when a design needs several related Boolean functions without occupying a larger FPGA or microcontroller. Designers should verify the programmed architecture, pin 4 power-down assignment, supply tolerance, and timing against the manufacturer datasheet before replacing a PAL or GAL device. PCB layouts must accommodate the PLCC-20 footprint, programming access, and the target system’s power sequencing. This page also consolidates verified pricing, source links, application guidance, and the constrained set of directly comparable drop-in devices.
ATF16V8C-7JC - 7.5ns 16V8 EECMOS PLD | Microchip
The Microchip Technology ATF16V8C-7JC is a high-performance 16V8 electrically erasable programmable logic device with 8 macrocells, a 7.5 ns propagation delay, and a 20-pin PLCC (9x9 mm) package. It uses EECMOS architecture and electrically erasable flash-memory technology to implement complex combinational or registered logic in a compact standard-power device. A programmable logic device, or PLD, is a semiconductor whose internal logic connections can be configured after manufacture. The ATF16V8C belongs to the broader hierarchy of programmable logic ICs, CPLDs, and digital logic semiconductors. Its 16V8 architecture combines 16 inputs and 8 outputs with eight configurable macrocells. The manufacturer datasheet states that the architecture emulates many 20-pin PAL devices and most 20-pin combinatorial PLDs, making it useful for consolidating several fixed-logic functions into one programmable component. Key device features include a maximum pin-to-pin delay of 5 ns in the broader ATF16V8C family, the 7.5 ns speed grade represented by ATF16V8C-7JC, and an optional pin-controlled power-down function that can reduce total supply current below 100 µA. The device supports CMOS and TTL-compatible interfacing. Speed options extend down to 5 ns, while the ATF16V8C-7JC specifically occupies the 7 ns speed designation associated with the distributor listing. The ATF16V8C uses a superset of generic 16R8 architectures and provides eight product terms per output through its eight macrocells. Software automatically configures the operating mode for combinational, registered, or mixed logic functions. This architecture allows each output to implement equations with multiple product terms while retaining the software-oriented design flow associated with 20-pin PAL-compatible logic. Typical uses include industrial control-interface decoding, address and command decoding, legacy peripheral glue logic, product-term Boolean equations, and timing-sensitive control logic where a 7.5 ns device is preferable to slower general-purpose programmable logic. The electrically erasable memory allows the configuration to be reprogrammed during development or field updates without replacing the device. The principal design consideration is voltage and timing compatibility with the existing board. The manufacturer describes industrial-range operation over 5 V ±10% and commercial-range operation over 5 V ±5%, subject to the relevant speed-grade and temperature qualification. Designers should also confirm whether pin 4 is assigned to the optional power-down function before treating it as an ordinary logic input. This page consolidates verified manufacturer and distributor information, distinguishes verified same-package alternatives from non-drop-in package variants, and adds practical comparison and design guidance that is not presented as raw datasheet specification data.