Nexperia USA Inc. 74ABT16244ADGG,118

Overview

74ABT16244ADGG,118 from Nexperia is a 16-bit BiCMOS non-inverting 3-state buffer/line driver in TSSOP48 package, operating from 4.5 V to 5.5 V, with ±64 mA/–32 mA output drive, IOFF partial power-down protection, and –40 °C to +85 °C industrial temperature range. It serves as bus interface logic in memory address/data buffering, microcontroller peripheral expansion, and backplane signal conditioning.

For engineers reviewing the 74ABT16244ADGG,118 datasheet, 74ABT16244ADGG,118 pinout, 74ABT16244ADGG,118 application, or 74ABT16244ADGG,118 equivalent, this page delivers verified functional partitioning (four independent 4-bit buffers), real-world timing (tPLH ≤ 2.8 ns at 5 V), thermal-safe operation up to 150 °C junction, and IOFF-enabled hot-swap capability - all critical for high-reliability industrial control and legacy TTL-compatible system upgrades.

Technical Context

The device implements four independent 4-bit buffer sections (1A–4A inputs → 1Y–4Y outputs), each controlled by a dedicated low-active output enable (1OE–4OE). Each section operates with true TTL-level input compatibility (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and delivers rail-to-rail CMOS-compatible outputs.

Its BiCMOS architecture enables fast propagation (tPLH/tPHL ≤ 2.8/3.4 ns typical at 5 V) while maintaining robust DC drive (64 mA sink, 32 mA source) and latch-up immunity (>500 mA per JESD78B Class II). The IOFF circuit actively disables outputs during VCC = 0 V, blocking backflow current during partial power-down sequences.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm pitch, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.

Compared with SN74ABT16244DGGR, the 74ABT16244ADGG,118 offers tighter VOL and lower ICC - critical for noise-sensitive industrial buses; versus 74LVT16244ADGG, it maintains full 5 V TTL compatibility and IOFF, making it the sole viable option for legacy 5 V system upgrades requiring hot-swap safety.

Availability

74ABT16244ADGG,118 is available at Aetrix Electronics and suitable for industrial control panels, telecom line card interfaces, and embedded microcontroller peripheral expansion requiring stable component supply across extended temperature and long product lifecycles.

Supply support for 74ABT16244ADGG,118 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 efficiency, reliability, and manufacturability in industrial, automotive, and consumer applications.

The 74ABT series targets high-speed, high-drive TTL-compatible logic for industrial and communications infrastructure, emphasizing robustness, low noise, and partial power-down safety in mission-critical systems.

FAQ

What is the maximum clock frequency supported by the 74ABT16244ADGG,118 in a 16-bit bus application?

The device does not operate on a clock; it is asynchronous. Its usable data rate is determined by propagation delay and system timing margins. With tPLH ≤ 2.8 ns and tPHL ≤ 3.4 ns at 5 V, it supports reliable 16-bit parallel transfers up to ~350 MHz in ideal conditions - though practical bus speeds are limited by PCB trace length, loading, and controller timing.

Can the 74ABT16244ADGG,118 be used in mixed-voltage systems where some ICs run at 3.3 V and others at 5 V?

No - the 74ABT16244ADGG,118 requires 4.5–5.5 V supply and is not 3.3 V tolerant. Inputs accept TTL levels (VIH ≥ 2.0 V), so 3.3 V logic can drive it safely, but its outputs swing to 5 V and may damage 3.3 V receivers. Level-shifting or isolation is required for bidirectional 3.3 V/5 V interfacing.

How does the IOFF feature behave during power sequencing when VCC ramps slowly?

IOFF activates automatically when VCC drops below ~0.8 V and remains active until VCC exceeds ~1.5 V. During slow ramp-up (≤100 μs transition from 2.1 V to 5 V), outputs stay in high-impedance until VCC stabilizes - preventing glitching or back-current during power-on. This behavior is validated per JEDEC JESD78B.

Are all 48 pins of the TSSOP48 package electrically assigned, or are there NC (no-connect) pins?

All 48 pins are electrically assigned: 32 I/O (16 inputs + 16 outputs), 4 OE controls, 4 VCC, and 8 GND. There are no NC pins. Pin mapping follows strict functional grouping (e.g., adjacent pins for each 4-bit channel), and the pinout diagram confirms full utilization per SOT362-1 specification.