Nexperia USA Inc. 74LVCH162373ADGG,1

Overview

74LVCH162373ADGG,1 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 supply, 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 FPGAs, microcontrollers, and memory interfaces.

For engineers reviewing the 74LVCH162373ADGG,1 datasheet, 74LVCH162373ADGG,1 pinout, 74LVCH162373ADGG,1 application, or 74LVCH162373ADGG,1 equivalent, this device serves as a robust, low-noise bus interface latch with partial power-down (IOFF), Schmitt-trigger inputs, and guaranteed operation from –40 °C to +125 °C - critical for industrial control, telecom backplanes, and embedded system data path isolation.

Technical Context

The 74LVCH162373ADGG,1 implements two independent 8-bit transparent latch sections, each with separate D-inputs, latch enables, and 3-state output controls. Its bus hold circuitry actively maintains logic states on unused data inputs without external pull-ups, reducing board space and EMI risk.

Each section features Schmitt-trigger inputs for noise immunity, IOFF protection enabling safe hot insertion in partially powered systems, and 30 Ω on-die series resistors that dampen signal reflections on high-speed PCB traces - eliminating need for discrete termination components in DDR, parallel bus, or FPGA I/O expansion applications.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm pitch - optimized for high-density PCB layouts with low inductance supply pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16373ADGGR and 74LVCH162374ADGG,1, the 74LVCH162373ADGG,1 uniquely combines transparency, bus hold, and on-die termination - making it optimal for noise-prone, high-speed parallel bus latching where input stability and signal integrity are non-negotiable.

Availability

74LVCH162373ADGG,1 is available at Aetrix Electronics and suitable for industrial control systems, telecom infrastructure backplanes, and FPGA-based embedded designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVCH162373ADGG,1 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 logic, analog, and discrete components - founded on decades of Philips/NXP heritage and focused on industrial, automotive, and computing applications.

The 74LVCH162373ADGG,1 belongs to Nexperia's advanced LVC/LVCH logic family, engineered specifically for high-speed, low-power, mixed-voltage digital interfacing in space-constrained and thermally demanding environments.

FAQ

What is the function of the bus hold circuit in the 74LVCH162373ADGG,1?

The bus hold circuit actively maintains the last valid logic state on each data input (1D0–1D7 and 2D0–2D7) when the input is left floating or disconnected. It draws ±75 μA at VCC = 3.0 V to sustain VIH or VIL levels, eliminating the need for external pull-up or pull-down resistors and preventing undefined states that could cause downstream logic errors.

Can the 74LVCH162373ADGG,1 operate with a 1.2 V supply?

Yes - the device is fully specified down to 1.2 V supply voltage, with functional operation guaranteed across the entire 1.2 V to 3.6 V range. At 1.2 V, propagation delay increases to 12 ns (typical), and output drive strength reduces accordingly, but all logic functions, bus hold, and IOFF remain operational per datasheet Table 5 and Table 6.

How does the 30 Ω series termination resistor improve signal integrity?

The integrated 30 Ω resistor is placed in series with each output driver, matching typical PCB trace impedances (e.g., 50 Ω) when combined with load capacitance and line termination. This damps signal reflections, reduces overshoot/ringing, and improves eye diagram margins - especially critical for parallel bus lengths exceeding 5 cm at >50 MHz data rates.

Is the 74LVCH162373ADGG,1 suitable for hot-swap applications?

Yes - its IOFF circuitry ensures that when VCC = 0 V, the outputs enter a high-impedance state with ≤±20 μA leakage current (per pin), preventing damaging backflow current from live backplane traces into the unpowered device. This meets JEDEC JESD78 requirements for partial power-down safety in modular systems.