Nexperia USA Inc. 74LVCH16373ADGG,51

Overview

74LVCH16373ADGG,51 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), operating from 1.2 V to 3.6 V supply with 5.5 V tolerant I/O. It functions as two independent 8-bit latches or one unified 16-bit latch, enabling data capture and bus isolation in mixed-voltage digital systems such as industrial PLC I/O modules and FPGA interface bridges.

For engineers reviewing the 74LVCH16373ADGG,51 datasheet, 74LVCH16373ADGG,51 pinout, 74LVCH16373ADGG,51 application, or 74LVCH16373ADGG,51 equivalent, key selection criteria include its bus hold on all data inputs, IOFF partial power-down capability, Schmitt-trigger input tolerance, and guaranteed operation from –40 °C to +125 °C across full voltage range.

Technical Context

This device implements two independent 8-bit transparent latch sections, each controlled by dedicated LE and OE signals-enabling selective latching and tri-state control per byte without cross-section interference. Its dual enable architecture supports staggered data capture timing and dynamic bus partitioning in high-density memory-mapped peripheral interfaces.

Bus hold circuitry is integrated exclusively on data inputs (not control pins), eliminating external pull-ups for unused Dn lines while maintaining logic state integrity during idle or hot-swap conditions. The IOFF feature actively disables outputs during power-down, preventing backflow current when VCC = 0 V and VI/VO = 5.5 V.

Key Specifications

Pinout & Package

TSSOP48 plastic thin shrink small outline package (SOT362-1), 48-pin, 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,51 and SN74ALVCH16373GR, the 74LVCH16373ADGG,51 uniquely combines bus hold, IOFF, and full –40 °C to +125 °C qualification-making it optimal for thermally demanding, hot-pluggable, or maintenance-sensitive embedded systems.

Availability

74LVCH16373ADGG,51 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, FPGA interface bridging, and automated test equipment requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74LVCH16373ADGG,51 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, and energy-efficient components for automotive, industrial, computing, consumer, and communications markets.

The 74LVCH16373A belongs to Nexperia's advanced logic family, engineered specifically for robust mixed-voltage digital interfacing in harsh environments-emphasizing voltage tolerance, thermal resilience, and power-down safety.

FAQ

What is the maximum clock/data frequency supported by the 74LVCH16373ADGG,51?

The device does not operate on a clock signal-it is a transparent latch controlled by level-sensitive LE and OE inputs. Its usable data rate is determined by propagation delay (as low as 1.0 ns) and setup/hold times (2.0 ns su / 0.9 ns h at 3.3 V), enabling reliable operation with input edges up to ~150 MHz in well-designed layouts with controlled trace impedance and load capacitance ≤30 pF.

Can the 74LVCH16373ADGG,51 be used with a 1.2 V supply and 3.3 V inputs?

Yes. The device supports VCC from 1.2 V to 3.6 V and tolerates input voltages up to 5.5 V regardless of supply level. At VCC = 1.2 V, inputs at 3.3 V are safely clamped and interpreted correctly due to overvoltage-tolerant input structure-no external protection needed.

Does the bus hold feature apply to all pins or only data inputs?

Bus hold is implemented only on the 16 data input pins (1D0–1D7 and 2D0–2D7). Control pins (1LE, 2LE, 1OE, 2OE) do not have bus hold and must be actively driven or externally terminated to avoid undefined states.

How does the IOFF feature behave during power sequencing?

When VCC = 0 V, the IOFF circuit automatically disables all outputs-placing them in high-impedance state-even if 5.5 V signals are present on Dn or Qn pins. This prevents reverse current flow into the powered-down device, protecting both the latch and upstream/downstream components during staggered power-up/down sequences.