Nexperia USA Inc. 74ALVCH162244DGG:1

Overview

74ALVCH162244DGG:1 from Nexperia is a 16-bit CMOS buffer/line driver with integrated 30 Ω termination resistors, bus hold inputs, and four independent 3-state output enables (1OE–4OE). It operates from 1.2 V to 3.6 V, supports partial power-down via IOFF, and delivers propagation delay as low as 2.7 ns at 3.3 V. It is used in high-speed parallel bus interfaces for industrial control backplanes and memory expansion modules.

For engineers reviewing the 74ALVCH162244DGG:1 datasheet, 74ALVCH162244DGG:1 pinout, 74ALVCH162244DGG:1 application, or 74ALVCH162244DGG:1 equivalent, key selection criteria include its 30 Ω on-die termination, bus hold functionality for floating-input immunity, IOFF-enabled hot-swap capability, and TSSOP48 package compatibility with dense PCB layouts.

Technical Context

This device implements a quad 4-bit flow-through buffer architecture with fully independent enable controls per group, enabling flexible partitioning into 4×4-bit, 2×8-bit, or 1×16-bit configurations. Each output stage integrates a 30 Ω series termination resistor and supports 3-state operation with active-low enables.

The IOFF circuit disables outputs during power-down to prevent backflow current, while bus hold inputs maintain valid logic states without external pull-ups. Static input thresholds are specified across three voltage ranges (1.7 V/2.0 V VIH min; 0.7 V/0.8 V VIL max), ensuring reliable interfacing with TTL and low-voltage CMOS systems.

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, with multiple VCC/GND pins for low-noise operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit buffer/line driver applications.

Compared with SN74ALVTH162244DGGR and 74LVC162244APAG, the 74ALVCH162244DGG:1 uniquely combines wide-voltage operation, on-die termination, and bus hold in a single TSSOP48 package-reducing component count, PCB area, and signal-integrity risk where compact, robust parallel interfacing is required.

Availability

74ALVCH162244DGG:1 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion modules, automated test fixture interfaces, and signal conditioning subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74ALVCH162244DGG: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 efficient logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74ALVCH series targets high-speed, low-power parallel bus interfacing in space-constrained industrial and test equipment, emphasizing integration (bus hold, termination), robustness (IOFF, latch-up immunity), and multi-voltage compatibility.

FAQ

What is the purpose of the integrated 30 Ω termination resistor?

Each output includes a 30 Ω series resistor to match typical PCB trace impedances (50–75 Ω) and suppress signal reflections in high-speed parallel buses. This eliminates the need for 16 external termination resistors, reducing BOM cost, PCB area, and layout complexity while improving signal integrity at data rates up to 350 Mbps per line.

How does the bus hold feature function without external components?

Bus hold circuitry actively maintains the last-valid logic state on each input using internal feedback transistors, drawing ±75 μA to ±150 μA depending on VCC and input voltage. This prevents floating inputs from drifting to indeterminate levels, removing the need for external pull-up or pull-down resistors in unconnected or unterminated bus segments.

Can 74ALVCH162244DGG:1 be used in hot-swap applications?

Yes - its IOFF circuitry automatically disables outputs and blocks current flow when VCC drops to 0 V, preventing damaging backflow current from live backplane rails into a powered-down module. This enables safe insertion and removal in modular industrial backplanes without system shutdown.

Why does the TSSOP48 package have eight GND and four VCC pins?

The multiple low-inductance power and ground connections minimize simultaneous switching noise (SSN) and ground bounce during 16-bit parallel data bursts. Eight GND pins provide distributed return paths, while four VCC pins reduce supply IR drop - both essential for maintaining signal integrity and timing margins in high-speed digital interfaces.