Nexperia USA Inc. 74HC75DB,112

Overview

74HC75DB,112 from Nexperia is a quad bistable transparent latch IC with complementary Q/nQ outputs, dual active-HIGH enable inputs (LE12 and LE34), 2.0 V to 6.0 V supply range, and operation up to +125 °C - used for data synchronization and bus isolation in industrial control logic circuits.

For engineers reviewing the 74HC75DB,112 datasheet, 74HC75DB,112 pinout, 74HC75DB,112 application, or 74HC75DB,112 equivalent, key selection factors include latch enable timing (tsu = 15 ns @ VCC = 4.5 V), propagation delay (tpd ≤ 28 ns @ VCC = 4.5 V, Tamb = −40 °C to +85 °C), complementary output drive capability, and SO16 package compatibility with legacy 74HC logic layouts.

Technical Context

The 74HC75DB,112 implements four independent transparent latches grouped into two pairs, each controlled by a dedicated active-HIGH enable signal (LE12 for latches 1–2, LE34 for latches 3–4). Its CMOS architecture ensures rail-to-rail input thresholds (VIH = 3.15 V min @ VCC = 4.5 V) and low static current (ICC ≤ 160 μA @ VCC = 6.0 V, Tamb = −40 °C to +125 °C).

Each latch features true and complement outputs (nQ and nQ) with symmetrical drive strength (IO = ±4 mA @ VCC = 4.5 V), enabling direct interfacing with downstream TTL or HC logic without external inverters. Input clamp diodes support overvoltage-tolerant interfacing when used with current-limiting resistors.

Key Specifications

Pinout & Package

74HC75DB,112 is supplied in SOT338-1 (SSOP16) package - plastic shrink small outline, 16 leads, body width 5.3 mm, 0.65 mm pitch - pin-compatible with SO16 footprints via adapter but not mechanically interchangeable.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC75D,653, the 74HC75DB,112 trades thermal performance for density and manufacturability; versus SN74HC75N, it delivers active lifecycle support, guaranteed parametric compliance, and modern packaging - making it the only viable option for production designs requiring long-term availability and industrial-grade reliability.

Availability

74HC75DB,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automated test equipment signal routing, legacy bus interface adapters, and motor control feedback capture requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for 74HC75DB,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 logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in industrial, automotive, and consumer applications.

The 74HC75DB,112 belongs to Nexperia's 74HC logic family - engineered for low-power, high-noise-immunity digital interfacing in harsh environments where consistent timing, latch-up immunity, and wide supply tolerance are critical.

FAQ

What is the maximum operating frequency supported by the 74HC75DB,112?

The 74HC75DB,112 does not specify a clock frequency since it is a transparent latch, not a clocked flip-flop. Its usable data rate is determined by propagation delay (tpd ≤ 28 ns @ VCC = 4.5 V) and set-up time (tsu = 15 ns), supporting reliable capture of signals up to approximately 35 MHz in well-designed synchronous interfaces with proper enable timing.

Can the 74HC75DB,112 be used with 3.3 V microcontrollers?

Yes - the 74HC75DB,112 operates from 2.0 V to 6.0 V and has CMOS input thresholds (VIH = 2.1 V min @ VCC = 4.5 V). At VCC = 3.3 V, VIH is ~2.0 V and VIL is ~1.1 V, ensuring full compatibility with 3.3 V logic families without level shifting, provided output loading remains within ±4 mA limits.

Does the 74HC75DB,112 support hot insertion or live swapping?

No - the 74HC75DB,112 lacks hot-swap protection circuitry. Its inputs feature clamp diodes, but these are intended for overvoltage protection during normal operation, not for safe insertion into powered backplanes. Power sequencing and board-level protection must be implemented externally if live insertion is required.

How does the dual-enable architecture (LE12 and LE34) improve system design?

The separate LE12 and LE34 inputs allow independent control of two latch pairs, enabling staggered data capture (e.g., sampling analog channels A/B then C/D), reduced bus contention during partial updates, and simplified timing in multi-phase control systems - eliminating the need for external gating logic or additional latch ICs.