Nexperia USA Inc. 74LVC2244APW,118

Overview

74LVC2244APW,118 from Nexperia is an octal 3-state buffer/line driver with dual independent output enables (1OE, 2OE), integrated 30 Ω series termination resistors per output, 5 V tolerant I/O, and operation from 1.2 V to 3.6 V supply. It functions as two 4-bit or one 8-bit buffer in mixed-voltage systems, supports partial power-down via IOFF, and features Schmitt-trigger inputs for noise immunity. Used in high-speed digital bus interfacing, memory address/data buffering, and level translation between 3.3 V and 5 V domains.

For engineers reviewing the 74LVC2244APW,118 datasheet, 74LVC2244APW,118 pinout, 74LVC2244APW,118 application, or 74LVC2244APW,118 equivalent, key selection criteria include 30 Ω on-die series termination for signal integrity, dual OE control for flexible bus partitioning, IOFF-enabled partial power-down, 5 V tolerance without external clamping, and guaranteed operation at -40 °C to +125 °C.

Technical Context

The device implements two independent 4-bit non-inverting buffers, each controlled by a dedicated active-low output enable (1OE for outputs 1Y0–1Y3; 2OE for 2Y0–2Y3). All eight inputs feature Schmitt-trigger action, enabling robust operation with slow-rising or noisy signals. The IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current during power sequencing.

Each output integrates a precise 30 Ω series resistor, eliminating need for external termination in point-to-point or short-bus applications. Input voltage range extends to 5.5 V regardless of VCC, allowing direct connection to 5 V logic while powered from 1.2–3.6 V - critical for voltage translation in heterogeneous systems.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC8T245RHLR, the 74LVC2244APW,118 provides deterministic unidirectional drive with on-die termination, while versus 74LVC244APW,118 it eliminates eight external resistors and associated placement tolerances - directly improving signal fidelity and reducing assembly cost.

Availability

74LVC2244APW,118 is available at Aetrix Electronics and suitable for industrial automation, automotive ADAS subsystems, medical imaging interfaces, and test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC2244APW,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 focused on high-volume, high-reliability logic, discrete, and MOSFET solutions, with leadership in process technology and application-specific optimization.

The 74LVC2244A belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, designed specifically for energy-efficient, mixed-voltage digital interfacing in space-constrained industrial and automotive applications.

FAQ

Can 74LVC2244APW,118 drive 50 Ω transmission lines directly?

No. Its integrated 30 Ω series resistor is optimized for point-to-point or short stub topologies (≤10 cm), not full 50 Ω controlled-impedance routing. For true 50 Ω line driving, external series or parallel termination is required. The 30 Ω value targets reduction of reflections on unterminated or lightly loaded traces typical in board-level interconnects.

What happens to outputs when VCC = 0 V and 1OE = LOW?

Outputs enter high-impedance state due to IOFF circuit activation - even with 1OE asserted, the internal path is disabled when VCC is absent. Measured IOFF leakage is ≤±20 μA at 5.5 V applied to outputs, preventing back-current damage during power sequencing or hot-swap events.

Is the TSSOP20 package (SOT360-1) lead-free and RoHS compliant?

Yes. The 74LVC2244APW,118 is manufactured in a lead-free, halogen-free, RoHS-compliant process per Nexperia's standard product policy. The SOT360-1 package uses matte tin (Sn) lead finish with peak reflow temperature rating of 260 °C (JEDEC J-STD-020).

How does Schmitt-trigger input behavior affect timing specifications?

Schmitt-trigger inputs introduce hysteresis (~0.5 V at VCC = 3.3 V) but do not alter propagation delay values - tpd is measured between 50 % input and 50 % output thresholds. The hysteresis improves noise margin on slow edges but adds no measurable delay penalty; timing parameters in Table 7 assume standard test conditions with fast-rising inputs.