Nexperia USA Inc. 74LVCH16244ADGG-QJ

Overview

74LVCH16244ADGG-QJ from Nexperia is a 16-bit 3-state buffer/line driver with bus hold on all data inputs, 5 V tolerant I/O, IOFF partial power-down protection, and Schmitt-trigger inputs for noise immunity. It operates from 1.2 V to 3.6 V supply, supports mixed-voltage interfacing (3.3 V ↔ 5 V), and is qualified to AEC-Q100 Grade 1 (−40 °C to +125 °C) for automotive body control modules.

For engineers reviewing the 74LVCH16244ADGG-QJ datasheet, 74LVCH16244ADGG-QJ pinout, 74LVCH16244ADGG-QJ application, or 74LVCH16244ADGG-QJ equivalent, this device is selected for high-noise automotive signal buffering where bus hold eliminates external pull-ups, IOFF prevents backfeed during power sequencing, and 4 independent output enables support granular subsystem isolation.

Technical Context

This device implements four independent 4-bit non-inverting buffers, each controlled by a dedicated active-low output enable (1OE–4OE). Each buffer section features Schmitt-trigger inputs enabling robust operation with slow-rising signals and high noise margin in automotive environments.

The IOFF circuit actively disables outputs when VCC = 0 V, blocking current flow between powered and unpowered domains. Bus hold on all 16 data inputs (A0–A15) maintains valid logic states without external biasing-critical for unused or floating lines in modular wiring harnesses.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC16244ADGG-Q100, the -H variant adds bus hold for zero-resistor input biasing; compared with SN74LVC16244ADGGR, it delivers extended temperature range and automotive qualification-making it the sole choice for production-grade vehicle electronics requiring long-term reliability and regulatory compliance.

Availability

74LVCH16244ADGG-QJ is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, CAN/LIN gateways, and chassis sensor aggregation requiring stable component supply across extended temperature ranges and full AEC-Q100 traceability.

Supply support for 74LVCH16244ADGG-QJ 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 logic, analog, and MOSFET solutions optimized for automotive, industrial, and mobile applications with emphasis on reliability and energy efficiency.

This device belongs to Nexperia's automotive-qualified LVC/LVCH logic family, designed specifically for robust signal buffering in harsh automotive environments where voltage translation, noise immunity, and power sequencing integrity are critical.

FAQ

What is the function of the IOFF circuit in the 74LVCH16244ADGG-QJ?

The IOFF circuit disables all outputs when VCC = 0 V, preventing backflow current from powered downstream circuits into the unpowered buffer. This protects against latch-up and damage during hot-swap, partial power-down, or firmware update sequences in automotive ECUs where subsystems power up/down asynchronously.

How does bus hold operate on the data inputs, and what design benefit does it provide?

Bus hold maintains the last valid logic state on each data input (A0–A15) using internal feedback circuitry that sources or sinks ±60–75 μA. This eliminates the need for 16 external pull-up resistors in body control modules, reducing BOM cost, PCB space, and potential failure points from resistor drift or solder joint fatigue.

Can the 74LVCH16244ADGG-QJ interface directly with 5 V TTL logic while powered from 3.3 V?

Yes. All inputs and outputs are 5 V tolerant up to 5.5 V regardless of VCC (1.2 V–3.6 V), allowing direct connection to 5 V TTL or CMOS devices without level shifters. This simplifies integration with legacy engine sensors, dashboard displays, or LIN transceivers operating at 5 V while the MCU runs at 3.3 V.

What is the significance of Schmitt-trigger inputs in automotive applications?

Schmitt-trigger inputs provide hysteresis (>0.5 V typical), enabling reliable detection of slow-rising or noisy signals from mechanical switches, potentiometers, or inductive sensors. In vehicles, this rejects EMI from alternators, ignition coils, and brush motors-preventing spurious toggling and ensuring deterministic behavior in safety-critical functions like door lock control.