Nexperia USA Inc. 74LVTH244BPW,112

Overview

74LVTH244BPW,112 from Nexperia is a 3.3 V octal 3-state buffer/line driver in TSSOP20 package, featuring dual 4-bit groups with independent active-low output enables (1OE, 2OE), ±32 mA/±64 mA drive capability, bus hold inputs eliminating external pull-ups, and 5.5 V overvoltage-tolerant inputs. It serves as a level-shifting interface between 3.3 V logic and 5 V buses in industrial backplane and FPGA I/O expansion systems.

For engineers reviewing the 74LVTH244BPW,112 datasheet, 74LVTH244BPW,112 pinout, 74LVTH244BPW,112 application, or 74LVTH244BPW,112 equivalent, key selection criteria include 3-state timing (tPZH ≤ 4.5 ns), bus hold current (IBHL = 75–130 μA), supply range (2.7–3.6 V), and IOFF power-down leakage (< ±100 μA) for hot-swap compatibility.

Technical Context

This BiCMOS device implements two independent 4-bit non-inverting buffers, each controlled by its own active-low enable (1OE for Y0–Y3 group, 2OE for Y0–Y3 group). Inputs tolerate up to 5.5 V regardless of VCC, enabling direct interfacing with 5 V systems while operating at 3.3 V.

Bus hold circuitry actively maintains unused input states without external resistors, and IOFF protection ensures minimal leakage (< ±100 μA) when VCC = 0 V-critical for live insertion and partial power-down operation in modular systems.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1), 4.4 mm body width, 0.65 mm pitch, 20-pin surface-mount with exposed pad not present - optimized for high-density PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC244APWR and 74ALVCH16244DLR, the 74LVTH244BPW,112 uniquely combines 5.5 V input tolerance, bus hold, IOFF, and dual 4-bit enables in a compact 20-pin TSSOP - making it the sole option for robust 3.3 V ↔ 5 V bridging in space-constrained, hot-pluggable systems.

Availability

74LVTH244BPW,112 is available at Aetrix Electronics and suitable for industrial backplane interfaces, FPGA I/O expansion, telecom line card buffering, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.

Supply support for 74LVTH244BPW,112 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 - delivering performance-optimized components for industrial, automotive, and computing markets.

The 74LVTH series targets high-speed, mixed-voltage digital interfacing, emphasizing robustness (5.5 V tolerance, bus hold, IOFF), low-power BiCMOS architecture, and industrial temperature qualification.

FAQ

What is the maximum input voltage the 74LVTH244BPW,112 can safely accept?

The device accepts input voltages up to +5.5 V regardless of VCC level, verified per datasheet Table 4 (VI max = +7.0 V with clamp current limits observed). This overvoltage tolerance enables direct connection to 5 V TTL outputs without external protection or level shifting, provided input clamp current remains within ±50 mA.

Does the 74LVTH244BPW,112 require external pull-up resistors on unused inputs?

No. The integrated bus hold circuitry actively maintains unused inputs at their last-valid logic state, with IBHL = 75–130 μA at VCC = 3 V. This eliminates the need for external 10 kΩ pull-up or pull-down resistors, reducing BOM count and PCB area while preventing floating-input-induced noise or false triggering.

Can the 74LVTH244BPW,112 be used in hot-swap applications?

Yes. Its IOFF circuitry limits power-off leakage to ±100 μA when VCC = 0 V, and the 3-state outputs remain high-impedance during power transitions. Combined with live-insertion permission per datasheet Section 2, this enables safe insertion into powered backplanes or carrier boards without disrupting adjacent circuits or causing bus contention.

How does the dual output-enable architecture improve system design flexibility?

The independent 1OE (Pin 1) and 2OE (Pin 19) allow separate control of two 4-bit data groups - enabling simultaneous bidirectional bus control (e.g., one group as address, another as data), selective lane disabling for power gating, or staggered enable timing to reduce simultaneous switching noise. This avoids external logic or additional buffers in multi-lane interface designs.