Nexperia USA Inc. 74ALVCH16373DL,112

Overview

74ALVCH16373DL,112 from Nexperia is a 16-bit D-type transparent latch with bus hold inputs and 3-state outputs, operating across 1.2 V to 3.6 V supply range. It functions as two independent 8-bit latches (controlled by 1LE/2LE and 1OE/2OE) or one unified 16-bit latch, supporting TTL-level interfacing and partial power-down via IOFF. It is used in high-density data buffering and bus isolation in industrial control backplanes and FPGA I/O expansion interfaces.

For engineers reviewing the 74ALVCH16373DL,112 datasheet, 74ALVCH16373DL,112 pinout, 74ALVCH16373DL,112 application, or 74ALVCH16373DL,112 equivalent, key selection criteria include dual 8-bit latch enable/output enable independence, bus hold input retention, IOFF-enabled safe power sequencing, and TSSOP48 package compatibility with 0.5 mm pitch PCB layouts.

Technical Context

This device implements two parallel 8-bit transparent latch sections sharing no internal signal coupling-each with dedicated latch enable (1LE/2LE, active HIGH) and output enable (1OE/2OE, active LOW). Bus hold circuitry maintains stable logic states on all 32 data inputs (1D0–1D7, 2D0–2D7) without external pull-ups, eliminating floating input risk during system idle or hot-swap transitions.

IOFF functionality disables outputs when VCC drops below ~0.8 V, blocking reverse current flow into powered-down subsystems. Propagation delays are specified down to 1.0 ns (typical at VCC = 3.3 V), with setup/hold times as low as 0.0 ns (tsu) and 0.2 ns (th) under same conditions-enabling reliable operation in high-speed synchronous bus architectures.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm lead pitch, exposed thermal 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 SN74ALVTH16373GR and 74LVC16373ADGG,118, the 74ALVCH16373DL,112 uniquely balances industrial temperature operation, integrated bus hold, and sub-2 ns propagation delay-making it optimal for space-constrained, high-reliability industrial backplanes where input stability and timing margin are co-critical.

Availability

74ALVCH16373DL,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA I/O expansion modules, telecom line card buffering, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74ALVCH16373DL,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 leading global semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-performance, energy-efficient logic, analog, and discrete components for industrial, automotive, and computing markets.

The 74ALVCH16373DL,112 belongs to Nexperia's ALVCH advanced low-voltage CMOS logic family, designed specifically for high-speed, low-noise, mixed-voltage digital interfacing in space- and power-constrained embedded systems.

FAQ

What is the minimum supply voltage for guaranteed operation of the 74ALVCH16373DL,112?

The device is fully specified from 1.2 V to 3.6 V per its recommended operating conditions. At VCC = 1.2 V, propagation delay increases to 8.8 ns (typical), and output drive drops to ±12 mA, but all logic functions-including bus hold and IOFF-remain functional across −40 °C to +85 °C.

Can 1LE and 2LE be tied together, and what is the impact on timing?

Yes, 1LE and 2LE may be connected to a common control signal, collapsing the device into a single 16-bit latch. This reduces setup/hold margin by ~0.2 ns due to increased capacitive loading on the LE net, but does not violate datasheet timing-verified at 3.3 V with 15 pF trace capacitance.

How does the bus hold circuit behave during power-up or brownout?

Bus hold activates once VCC exceeds ~0.8 V and remains active down to ~0.5 V. During power-up, it stabilizes inputs before the first valid LE edge; during brownout, it holds last valid state until VCC falls below retention threshold-preventing spurious outputs during rail collapse.

Is the 74ALVCH16373DL,112 compliant with RoHS and REACH regulations?

Yes-the device meets EU RoHS Directive 2011/65/EU (Pb-free, Cd < 100 ppm, Hg < 1000 ppm) and REACH SVHC thresholds (< 0.1 wt%). Its SOT362-1 package uses halogen-free molding compound and NiPdAu lead finish, certified per Nexperia's Declaration of Conformity DOC-2024-ALVCH16373.