Nexperia USA Inc. 74LVCH162373ADL:11

Overview

74LVCH162373ADL:11 from Nexperia is a 16-bit D-type transparent latch with integrated 30 Ω series termination resistors, 5 V-tolerant I/O, and dual 8-bit 3-state outputs controlled by independent latch enable (1LE/2LE) and output enable (1OE/2OE) inputs. It operates from 1.2 V to 3.6 V, supports mixed-voltage translation between 3.3 V and 5 V systems, and features bus hold on all data inputs for floating-input immunity. Used in high-speed address/data latching for industrial microcontroller buses and FPGA I/O expansion.

For engineers reviewing the 74LVCH162373ADL:11 datasheet, 74LVCH162373ADL:11 pinout, 74LVCH162373ADL:11 application, or 74LVCH162373ADL:11 equivalent, this device is selected for its 30 Ω on-die termination (reducing external component count), IOFF partial power-down protection, Schmitt-trigger inputs for slow-edge tolerance, and guaranteed operation from –40 °C to +125 °C in TSSOP48 packaging.

Technical Context

This latch implements two independent 8-bit transparent sections, each with dedicated latch-enable and output-enable controls-enabling flexible partitioning of data paths without inter-section timing coupling. Its bus hold circuitry actively maintains logic states on unused D inputs, eliminating need for external pull-ups/downs in hot-swap or unpopulated bus scenarios.

The 30 Ω series termination resistors are integrated per I/O pin and matched to typical PCB trace impedances, directly damping signal reflections at source without requiring discrete resistors. Combined with 5 V-tolerant inputs/outputs and IOFF protection, it enables robust level-shifting and safe operation during partial system power-down sequences.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16373ADGGR, the 74LVCH162373ADL:11 reduces component count and improves signal fidelity via integrated termination and bus hold; compared with 74LVCH162374ADL:11, it provides level-sensitive latching essential for asynchronous bus handshaking and address strobing.

Availability

74LVCH162373ADL:11 is available at Aetrix Electronics and suitable for industrial automation interfaces, FPGA I/O expansion, automotive body control units, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVCH162373ADL: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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions for industrial, automotive, and computing markets.

The 74LVCH162373ADL:11 belongs to Nexperia's advanced LVC/LVCH logic family, engineered specifically for noise-immune, mixed-voltage digital interfacing in space-constrained and thermally demanding applications.

FAQ

What is the function of the bus hold circuit in the 74LVCH162373ADL:11?

The bus hold circuit actively maintains the last valid logic state on each data input (1D0–1D7, 2D0–2D7) when the input is left floating or disconnected. It sources or sinks ±75 μA at V_CC = 3.0 V to prevent undefined states, eliminating the need for external pull-up or pull-down resistors in unpopulated or hot-swap-capable designs.

Can the 74LVCH162373ADL:11 operate with a 1.2 V supply voltage?

Yes-the device is fully specified from 1.2 V to 3.6 V. At 1.2 V, propagation delay increases to 12 ns (typical), input thresholds scale to 0.12 V (V_IL) and 1.08 V (V_IH), and output drive strength reduces accordingly. All static and dynamic parameters remain guaranteed across this full range per the datasheet's recommended operating conditions.

How does the IOFF feature protect the device during partial power-down?

When V_CC = 0 V, the IOFF circuit disables all outputs and blocks current flow between I/O pins and the powered-down core. This prevents damaging backflow current from live 5 V buses into the unpowered device, enabling safe insertion into partially energized systems such as backplanes or modular test fixtures.

Are the 30 Ω series termination resistors internal to each I/O pin?

Yes-each of the 16 data outputs (1Q0–1Q7, 2Q0–2Q7) includes a precisely matched 30 Ω series resistor integrated within the die. These resistors are placed between the internal output driver and the bond pad, providing source termination that damps reflections without requiring external components or layout adjustments.