Nexperia USA Inc. 74LVT2244PW,118

Overview

74LVT2244PW,118 from Nexperia is a 3.3 V octal 3-state buffer/line driver with integrated 30 Ω series output termination resistors, designed for high-speed memory address and clock bus driving in industrial embedded systems. It features dual independent 4-bit sections (1A/1Y and 2A/2Y), two active-low output enables (1OE, 2OE), bus hold on all inputs, and ±12 mA drive capability across -40 °C to +85 °C.

For engineers reviewing the 74LVT2244PW,118 datasheet, 74LVT2244PW,118 pinout, 74LVT2244PW,118 application, or 74LVT2244PW,118 equivalent, key selection criteria include its 30 Ω on-die termination for noise reduction, overvoltage-tolerant 5.5 V inputs, BiCMOS output stage, power-up 3-state behavior, and compatibility with TTL-level signaling in mixed-voltage bus interfaces.

Technical Context

The 74LVT2244PW implements two independent 4-bit non-inverting buffer sections, each controlled by its own active-low output enable (1OE for outputs 1Y0–1Y3; 2OE for 2Y0–2Y3). Its BiCMOS output stage integrates 30 Ω series resistance in both HIGH and LOW states to dampen signal reflections without external components.

Bus hold circuitry maintains defined logic states on unused inputs, eliminating external pull-ups. The IOFF circuit enables partial power-down operation during hot insertion, while input clamping and ESD protection (HBM >2000 V, CDM >1000 V) support robust system-level interfacing in noisy industrial environments.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.

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,118, the 74LVT2244PW,118 uniquely combines on-die 30 Ω termination, 5.5 V input tolerance, and bus hold in a single TSSOP20 package - reducing design complexity for noise-sensitive industrial bus interfaces without sacrificing robustness or temperature range.

Availability

74LVT2244PW,118 is available at Aetrix Electronics and suitable for industrial control systems, network infrastructure equipment, and test instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for 74LVT2244PW,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 leading semiconductor manufacturer specializing in high-performance, high-reliability logic, analog, and discrete components for industrial, automotive, and computing markets.

The 74LVT2244 belongs to Nexperia's LVT (Low-Voltage Technology) logic family, engineered for 3.3 V systems demanding high-speed, low-noise bus interfacing with robust ESD and overvoltage protection.

FAQ

What is the purpose of the 30 Ω series resistance in the 74LVT2244PW,118 outputs?

The 30 Ω series resistance is integrated into both the HIGH and LOW output paths to dampen signal reflections on PCB traces and cables. This reduces ringing, overshoot, and EMI in high-speed bus applications such as memory address lines and clock distribution, eliminating the need for eight discrete external termination resistors and simplifying layout.

Can the 74LVT2244PW,118 safely interface with 5 V logic inputs?

Yes - all data and control inputs (1A0–1A3, 2A0–2A3, 1OE, 2OE) are overvoltage tolerant up to 5.5 V, allowing direct connection to 5 V TTL or CMOS outputs without level-shifting circuitry. The device operates from a 3.3 V supply and outputs 3.3 V logic levels, making it ideal for mixed-voltage system interfacing.

How does bus hold functionality work, and when is it beneficial?

Bus hold circuitry actively maintains the last valid logic state on any unused input pin using weak feedback transistors (±75–150 μA hold current). It prevents floating inputs from drifting to indeterminate voltages, which is critical in modular systems with unpopulated connectors, hot-swap I/O cards, or partially configured expansion headers - eliminating external pull-up/pull-down resistors.

Is the 74LVT2244PW,118 suitable for hot-plug applications?

Yes - the device includes IOFF circuitry that disables output leakage when VCC = 0 V, and supports live insertion/extraction per JESD78 Class II Level B latch-up immunity (>500 mA). Combined with power-up 3-state behavior, this ensures bus contention is avoided during board insertion or removal in backplane and modular chassis systems.