Nexperia USA Inc. 74LVT2244D,112

Overview

74LVT2244D,112 from Nexperia is a 3.3 V octal 3-state buffer/line driver with integrated 30 Ω series termination resistors per output, designed for high-speed memory address and clock bus driving in industrial embedded systems. It features dual independent output enables (1OE, 2OE), bus hold on all data inputs, and ±12 mA drive capability across -40 °C to +85 °C.

For engineers reviewing the 74LVT2244D,112 datasheet, 74LVT2244D,112 pinout, 74LVT2244D,112 application, or 74LVT2244D,112 equivalent, key selection criteria include its 30 Ω on-die termination for noise reduction, overvoltage-tolerant 5.5 V inputs, BiCMOS output stage, and SO20 package compatibility with legacy LVT logic families.

Technical Context

The 74LVT2244D implements two independent 4-bit 3-state buffers, each controlled by a dedicated 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 transmission-line reflections without external components.

Bus hold circuitry maintains valid logic states on unused inputs without external pull-ups, while IOFF protection ensures low leakage during partial power-down. The device operates from 2.7 V to 3.6 V and accepts TTL- and 5 V-compatible input levels up to 5.5 V.

Key Specifications

Pinout & Package

74LVT2244D,112 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads and 7.5 mm body width. Pin 1 is marked by a notch or dot; the package is 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 74LVT2244D,112, the PW variant offers identical performance in a smaller footprint but demands tighter process control, while the SN74LVC244APWR sacrifices robustness and integration to reduce unit cost-making it unsuitable for noise-sensitive or mixed-voltage environments.

Availability

74LVT2244D,112 is available at Aetrix Electronics and suitable for industrial control systems, memory subsystems, and high-speed bus interface designs requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for 74LVT2244D,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-performance, reliable standard logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVT2244 belongs to Nexperia's LVT (Low-Voltage Technology) logic family, engineered specifically for 3.3 V systems demanding high-speed, low-noise bus interfacing with backward compatibility to 5 V logic levels.

FAQ

Can 74LVT2244D,112 drive a 50 Ω transmission line directly?

No-it provides 30 Ω series termination, not 50 Ω source matching. For optimal 50 Ω line driving, use it with a 20 Ω external series resistor (30 Ω internal + 20 Ω external = 50 Ω total), or pair with a 50 Ω parallel termination at the receiver end. The internal 30 Ω value targets common unterminated stub lengths in backplane and board-level interconnects.

Does bus hold eliminate all need for external pull-up resistors?

Yes-for unused data inputs (1A0–1A3, 2A0–2A3). Bus hold current (±75–150 μA) actively maintains the last valid logic state, preventing floating nodes and associated noise coupling or false triggering. Output enables (1OE, 2OE) still require external pull-up if driven by open-drain sources.

What is the maximum clock frequency supported by 74LVT2244D,112?

Based on worst-case propagation delay (4.4 ns at VCC = 3.0–3.6 V), the device supports data rates up to ~227 MHz for single-edge signaling. In practice, system-level timing margins, trace length, and load capacitance limit usable frequency to ≤150 MHz for robust operation in industrial environments.

Is 74LVT2244D,112 qualified for automotive applications?

No-this part is specified for industrial temperature range (-40 °C to +85 °C) and carries no AEC-Q100 qualification. Nexperia does not list it as automotive-grade in official documentation or product selectors. For automotive use, consult Nexperia's dedicated automotive logic portfolio with explicit AEC-Q100 certification.