Nexperia USA Inc. 74LVC16244AEV,157

Overview

74LVC16244AEV,157 from Nexperia is a 16-bit non-inverting 3-state buffer/line driver with four independent output-enable inputs (1OE–4OE), 5 V tolerant I/O, and IOFF partial power-down protection. It operates from 1.2 V to 3.6 V supply, supports mixed-voltage interfacing between 3.3 V and 5 V systems, and features Schmitt-trigger inputs for noise immunity. Used in bus buffering, memory address/data latching, and level translation in industrial control backplanes.

For engineers reviewing the 74LVC16244AEV,157 datasheet, 74LVC16244AEV,157 pinout, 74LVC16244AEV,157 application, or 74LVC16244AEV,157 equivalent, this device delivers deterministic 3-state timing, robust 5 V tolerance on all I/O pins, low-noise multiground architecture, and bus-hold functionality (on LVCH variant) - critical for stable operation in high-density PCB layouts with unterminated stubs or floating inputs.

Technical Context

This device implements four independent 4-bit buffer sections, each controlled by its own active-low output-enable signal (1OE–4OE), enabling granular bus segment control. All inputs include Schmitt-trigger action, ensuring reliable switching with slow-rising or noisy signals, and the IOFF circuit actively disables outputs when VCC = 0 V to prevent backflow current during hot-swap or partial power-down sequences.

It complies with JEDEC standards JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V), and supports full industrial temperature range (−40 °C to +125 °C). The 74LVC16244A variant lacks bus-hold; the 74LVCH16244A includes it on data inputs only - a key functional distinction confirmed in Table 2 and Section 2.

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. Pin 1 index marked; thermal pad not present. Compatible with standard reflow profiles (JEDEC J-STD-020).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVCH16244ADGV, the 74LVC16244AEV,157 trades bus-hold for slightly lower static current and broader 1.2 V operation; versus SN74LVC16244ADGGR, it offers superior low-VCC support and tighter propagation delay consistency across voltage corners.

Availability

74LVC16244AEV,157 is available at Aetrix Electronics and suitable for industrial PLC backplane buffering, automotive body control module I/O expansion, and test equipment signal routing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC16244AEV,157 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, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.

The 74LVC16244A belongs to Nexperia's LVC logic family - designed specifically for low-voltage, high-speed, mixed-signal interfacing in space-constrained industrial and communications equipment where power efficiency and noise immunity are critical.

FAQ

Is 74LVC16244AEV,157 pin-compatible with 74LVCH16244A variants?

Yes - both share identical TSSOP48 (SOT362-1) pinout, supply voltage range, and 3-state timing behavior. The sole functional difference is the absence of bus-hold circuitry on data inputs in the LVC version, which does not affect pin mapping or electrical interface compatibility.

What is the maximum clock frequency supported for data throughput?

This device is not a clocked register; it is a combinatorial buffer. Its usable data rate depends on propagation delay and load capacitance. With 30 pF load and VCC = 3.3 V, tpd ≤ 4.1 ns (typ), supporting clean signal edges up to ~240 MHz fundamental frequency in parallel bus applications.

Can it safely interface a 3.3 V FPGA to a 5 V DAC without external components?

Yes - all inputs and outputs tolerate 0 V to 5.5 V regardless of VCC (1.2–3.6 V). When powered at 3.3 V, the 74LVC16244AEV,157 drives the DAC's 5 V logic inputs directly, and accepts 5 V signals from the DAC's status pins without damage or level-shifting circuitry.

Does it support hot-swap insertion into a live 5 V backplane?

Yes - the IOFF feature actively disables outputs and limits leakage to ±10 μA when VCC = 0 V, preventing backfeed current from 5 V backplane lines into unpowered circuitry. This satisfies IEC 61000-4-2 Level 3 ESD and hot-swap safety requirements.