NXP Semiconductors 74HC75PW,112

Overview

74HC75PW,112 from Nexperia is a quad bistable transparent latch IC with complementary Q/nQ outputs, dual active-HIGH enable inputs (LE12 for latches 1–2, LE34 for latches 3–4), 2.0–6.0 V supply range, and operation up to +125 °C - used in bus interface buffering, data sampling, and address/data latching in industrial control logic.

For engineers reviewing the 74HC75PW,112 datasheet, 74HC75PW,112 pinout, 74HC75PW,112 application, or 74HC75PW,112 equivalent, key selection criteria include transparent latch timing (tsu = 15 ns @ VCC = 4.5 V), dual-enable grouping, complementary output drive capability, and TSSOP16 package compatibility with high-density PCB layouts.

Technical Context

The 74HC75PW implements four independent CMOS transmission-gate-based transparent latches, each with true and complement outputs. Latch pairs share dedicated enable signals (LE12 controls latches 1 & 2; LE34 controls latches 3 & 4), enabling selective data capture across two independent data paths.

Its input structure includes clamp diodes for overvoltage tolerance, supporting interfacing to voltages exceeding VCC when used with current-limiting resistors. Output drive strength is specified at ±4 mA (VOH/VOL) and ±5.2 mA (VCC = 6.0 V), ensuring robust fanout into HC/HCT loads.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1), 4.4 mm body width, 0.65 mm lead pitch, 16-pin surface-mount with exposed pad not present - optimized for automated assembly and thermal performance in space-constrained designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad transparent latch applications.

Compared with 74HC75PW,112, the SO16 variant offers easier rework but sacrifices board space efficiency, while the obsolete PDIP version lacks industrial temperature support and modern ESD protection - making the TSSOP16 the optimal choice for new high-density, high-reliability designs.

Availability

74HC75PW,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller bus latching, legacy display interfaces, and automated test equipment requiring stable component supply across extended temperature ranges.

Supply support for 74HC75PW,112 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert delivering high-performance, reliable logic, analog, and MOSFET solutions with leadership in efficiency, miniaturization, and reliability for industrial and consumer applications.

The 74HC75 belongs to Nexperia's 74HC high-speed CMOS logic family, engineered for low-power, noise-immune digital interfacing in space-constrained industrial control and embedded systems.

FAQ

What is the maximum clock frequency supported by the 74HC75PW,112?

The 74HC75PW,112 is not a clocked device but a transparent latch; it has no internal clock. Its effective data rate depends on propagation delay (12 ns typical) and set-up/hold times (15 ns/3 ns). For reliable operation, the LE enable pulse width must exceed 20 ns at VCC = 4.5 V, supporting up to ~25 MHz enable toggling in burst-mode applications.

Can the 74HC75PW,112 interface directly with 3.3 V microcontrollers?

Yes - its VIH threshold is 2.1 V min (VCC = 4.5 V) and 1.35 V min (VCC = 3.3 V), fully compatible with 3.3 V logic outputs. When powered at 3.3 V, it drives outputs to ≥2.9 V (VOH) and ≤0.1 V (VOL) at 4 mA load, meeting 3.3 V CMOS input requirements without level shifters.

Does the 74HC75PW,112 support hot insertion or live swapping?

No - the device lacks hot-swap protection circuitry. Its inputs have clamp diodes but no current-limiting or power-up sequencing features. Applying signals before VCC stabilization may cause latch-up or excessive current flow. Always ensure VCC is stable before asserting any inputs or enables.

How does the dual-enable architecture improve system design?

The separate LE12 and LE34 inputs allow independent control of two 2-bit data groups - e.g., latching upper/lower nibbles of an 8-bit bus with staggered timing. This eliminates need for additional logic gates or multiple single-latch ICs, reducing component count, routing complexity, and propagation skew across related signals.