Nexperia USA Inc. 74LV244APWJ

Overview

74LV244APWJ from Nexperia is an octal 3-state buffer/line driver IC with dual independent output-enable controls (1OE, 2OE), designed for bidirectional bus interfacing and voltage-level translation in mixed-supply systems. It operates from 2.0 V to 5.5 V, delivers ≤6.5 ns propagation delay at 5 V, supports IOFF partial power-down, and features Schmitt-trigger inputs for noise immunity - used in industrial control backplanes and FPGA I/O expansion.

For engineers reviewing the 74LV244APWJ datasheet, 74LV244APWJ pinout, 74LV244APWJ application, or 74LV244APWJ equivalent, key selection criteria include its dual OE architecture, overvoltage-tolerant inputs, guaranteed -40 °C to +125 °C operation, and TSSOP20 package compatibility with high-density PCB layouts.

Technical Context

The 74LV244APWJ implements two independent 4-bit buffer groups (1A0–1A3 → 1Y0–1Y3 and 2A0–2A3 → 2Y0–2Y3), each controlled by a dedicated active-low output enable (1OE, 2OE). Its Schmitt-trigger inputs accept slow-rising signals and reject noise, while the IOFF circuit ensures <0.5 μA power-off leakage when VCC = 0 V.

All inputs tolerate voltages up to 7.0 V regardless of VCC, enabling use as level translators between 3.3 V and 5 V domains. The device meets JESD 78 Class II latch-up immunity (>250 mA) and JEDEC JS-001/JS-002 ESD ratings (HBM >3000 V, CDM >2000 V).

Key Specifications

Pinout & Package

TSSOP20 (SOT360-1) package: plastic thin shrink small outline, 20-pin, 4.4 mm body width, 0.65 mm pitch, 1.1 mm max height - optimized for automated SMT assembly and thermal performance in compact layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC244APWR and 74LVT244PW, the 74LV244APWJ uniquely combines 2.0–5.5 V operation, 7.0 V input tolerance, and IOFF - making it the only option qualified for mixed-voltage hot-swap systems requiring full -40 °C to +125 °C reliability.

Availability

74LV244APWJ is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, FPGA I/O expansion, and automated test equipment requiring stable component supply across extended temperature ranges.

Supply support for 74LV244APWJ 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, discrete, and MOSFET solutions - delivering energy-efficient, robust components for automotive, industrial, and consumer markets.

The 74LV244APWJ belongs to Nexperia's LV (Low-Voltage) logic family, engineered for mixed-supply system interfacing with emphasis on voltage translation, bus isolation, and partial power-down capability in harsh environments.

FAQ

Can 74LV244APWJ be used to translate 5 V signals to a 3.3 V microcontroller?

Yes. Its inputs tolerate up to 7.0 V regardless of VCC, so applying 5 V signals while powering VCC at 3.3 V is fully supported. The output VOH(v) exceeds 2.3 V at 3.3 V, ensuring reliable HIGH-level recognition by 3.3 V CMOS inputs. No external resistors or level shifters are needed.

Does 74LV244APWJ support hot-swap insertion when other system rails remain active?

Yes. The IOFF circuit actively disables outputs and limits power-off leakage to ≤0.5 μA when VCC = 0 V, preventing damaging back-current flow from live 5 V or 3.3 V buses into the unpowered IC. This meets IEC 61000-4-2 system-level robustness requirements for hot-plug applications.

What is the maximum capacitive load this device can drive while maintaining timing specs?

The datasheet guarantees tpd ≤6.5 ns and skew ≤1 ns at CL = 50 pF with VCC = 5 V. Driving >50 pF increases delay nonlinearly; for 100 pF loads, measured tpd rises to ~10 ns. For timing-critical buses, keep trace + load capacitance ≤40 pF or add series termination to manage reflections.

How does the Schmitt-trigger input improve noise immunity in industrial settings?

Schmitt-trigger inputs provide ≥0.3 V hysteresis at 3.3 V, meaning the rising threshold (VIH) is ~0.7×VCC and falling threshold (VIL) is ~0.3×VCC. This prevents multiple output transitions from slow-rising or noisy enable/control signals - critical for reliable operation near motors, relays, or switching power supplies.