Nexperia USA Inc. 74AHCV244APWJ

Overview

74AHCV244APWJ from Nexperia is an octal 3-state buffer/line driver with Schmitt-trigger inputs, dual independent output enables (1OE, 2OE), IOFF partial power-down protection, and overvoltage-tolerant inputs enabling mixed-voltage translation between 1.8 V and 5.5 V domains. It delivers 3.0 ns typical propagation delay at 5 V and operates across –40 °C to +125 °C for industrial bus interfacing and level-shifting applications.

For engineers reviewing the 74AHCV244APWJ datasheet, 74AHCV244APWJ pinout, 74AHCV244APWJ application, or 74AHCV244APWJ equivalent, this page provides verified functional identity, TSSOP20 pin mapping, Schmitt-trigger noise immunity specs, IOFF leakage data, and validated alternatives for voltage-translation and bus-driving use cases.

Technical Context

This device implements two independent 4-bit buffer groups (Group 1: 1A0–1A3 → 1Y0–1Y3; Group 2: 2A0–2A3 → 2Y0–2Y3), each controlled by its own active-low output enable (1OE, 2OE). Outputs enter high-impedance state when respective OE is HIGH, supporting bidirectional bus arbitration.

Schmitt-trigger inputs provide hysteresis (0.5–1.6 V typical) to reject slow-rising/falling signals and suppress noise-induced glitches; IOFF circuitry limits off-state current to ≤0.5 μA at VCC = 0 V, preventing backflow during partial power-down sequences in multi-rail systems.

Key Specifications

Pinout & Package

TSSOP20 (SOT360-1) package: 20-pin plastic thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, 1.1 mm max height - 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 74ALVC244PW, the 74AHCV244APWJ uniquely combines 1.8–5.5 V operation, Schmitt-trigger noise rejection, IOFF protection, and full –40 °C to +125 °C qualification - making it the sole option for robust mixed-voltage industrial and automotive bus interfacing.

Availability

74AHCV244APWJ is available at Aetrix Electronics and suitable for industrial bus interface, microcontroller GPIO expansion, automotive sensor conditioning, and test equipment digital I/O requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for 74AHCV244APWJ 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 specializing in high-performance, energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer markets.

The 74AHCV series targets high-speed, low-power, mixed-voltage interface applications - designed specifically for noise-prone industrial environments and thermally demanding embedded systems requiring guaranteed operation to +125 °C.

FAQ

Can 74AHCV244APWJ operate with 5 V inputs while powered at 3.3 V?

Yes. Its overvoltage-tolerant inputs accept signals up to 7.0 V regardless of VCC level, enabling safe 5 V-to-3.3 V level translation without external components. This is confirmed in Table 4 (Limiting Values) and Section 1 (General Description) of the datasheet.

What is the maximum output load capacitance supported at 100 MHz operation?

At VCC = 4.5–5.5 V and CL = 50 pF, the device achieves tpd ≤7.5 ns and tdis ≤10.5 ns, supporting reliable 100 MHz toggle rates. The 50 pF limit is validated in Table 7 (Dynamic Characteristics) and Fig. 8 (test circuit).

Does the IOFF feature protect against back-current when VCC = 0 V and outputs are driven externally?

Yes. IOFF limits off-state output current to ≤0.5 μA when VCC = 0 V and VO = 0–5.5 V, preventing destructive backflow through powered-down outputs. This is specified in Table 6 (Static Characteristics) under IOFF parameter.

How does the Schmitt-trigger input improve noise immunity compared to standard CMOS inputs?

It provides 0.5–1.6 V hysteresis (VH), meaning the rising and falling input thresholds differ significantly - rejecting noise spikes smaller than VH and eliminating multiple transitions on slow edges. Measured VT+ and VT− values are tabulated in Table 6.