Nexperia USA Inc. 74LVCH16373ADGG,11

Overview

74LVCH16373ADGG,11 from Nexperia is a 16-bit D-type transparent latch with 3-state outputs, dual latch enables (1LE/2LE) and dual output enables (1OE/2OE), 5 V tolerant I/O (up to 5.5 V), bus hold on all data inputs, and IOFF partial power-down support. It operates from 1.2 V to 3.6 V supply and is rated for −40 °C to +125 °C, serving as a level-translating data latch in mixed-voltage industrial control backplanes.

For engineers reviewing the 74LVCH16373ADGG,11 datasheet, 74LVCH16373ADGG,11 pinout, 74LVCH16373ADGG,11 application, or 74LVCH16373ADGG,11 equivalent, key selection criteria include 5 V tolerance on 3.3 V–supplied logic, bus hold eliminating external pull-ups, IOFF protection during hot-swap, and TSSOP48 package compatibility with high-density PCB layouts.

Technical Context

This device implements two independent 8-bit transparent latches sharing one 48-pin TSSOP package. Each latch section features separate LE and OE controls, enabling independent gating of data flow and output state-critical for segmented bus buffering in modular PLC I/O modules.

Its Schmitt-trigger inputs tolerate slow-rising signals common in legacy industrial sensors, while the bus hold circuit sustains valid logic states on unused D-inputs without external resistors, reducing BOM count and layout complexity in field-deployed equipment.

Key Specifications

Pinout & Package

TSSOP48 plastic thin shrink small outline package (SOT362-1), 48 leads, body width 6.1 mm, lead pitch 0.5 mm, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit transparent latch applications.

Compared with 74LVC16373ADGG,11 and SN74ALVCH16373DGGR, the 74LVCH16373ADGG,11 uniquely combines bus hold, IOFF, and 5.5 V tolerance in a single 48-pin TSSOP - making it optimal for space-constrained, hot-pluggable, mixed-voltage industrial designs where reliability trumps marginal cost savings.

Availability

74LVCH16373ADGG,11 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, automated test equipment, and medical imaging subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVCH16373ADGG,11 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 optimized for efficiency, miniaturization, and robustness in demanding applications.

The 74LVCH series targets industrial and automotive systems requiring enhanced I/O robustness, bus hold functionality, and seamless voltage translation - directly addressing design challenges in modular control hardware and safety-critical electronics.

FAQ

Does 74LVCH16373ADGG,11 support hot-swap insertion while powered?

Yes - its IOFF circuitry actively disables outputs and blocks back-current when VCC = 0 V, even with 5.5 V applied to I/O pins. This protects upstream drivers and downstream loads during live board replacement in rack-mounted systems, meeting IEC 61000-4-2 Level 3 ESD immunity requirements.

Can bus hold be disabled on this device?

No - bus hold is permanently enabled on all data inputs (1D0–1D7, 2D0–2D7) and cannot be disabled via control pins or configuration. It activates automatically when input voltage falls within the undefined region (VIH < VI < VIL), sustaining the last valid logic state without external components.

What is the maximum clock frequency supported for transparent mode operation?

The device has no internal clock; it operates asynchronously in transparent mode. Maximum usable data rate depends on propagation delay and system timing margins - at VCC = 3.3 V, tPD(D→Q) ≤ 4.4 ns guarantees reliable operation up to ~100 MHz for burst-mode transfers with adequate setup/hold time allocation.

How does the dual latch enable architecture improve system timing?

Separate 1LE and 2LE inputs allow independent latching of two 8-bit data streams - for example, capturing command address in one group while simultaneously holding payload data in the other. This eliminates inter-group timing dependencies and reduces worst-case latency by up to 50% compared to single-enable 16-bit latches.