Texas Instruments 74HC251 Data Selector/Multiplexer IC DIP-16

Texas Instruments 74HC251 Data Selector/Multiplexer IC is a 16-pin DIP integrated circuit that selects one of eight data sources, making it a practical choice for data routing and signal management in digital systems.

Overview

The 74HC251 uses full binary decoding to select one-of-eight data sources. Its strobe-controlled complementary outputs deliver both true and inverted data, which supports efficient parallel-to-serial conversion and adds design flexibility. The device belongs to the 74HC logic family and operates from a supply voltage of 2V to 6V.

Key Features

• 3-state outputs for direct bus interfacing with system data buses
• Outputs enter a high-impedance state when disabled, preventing bus contention and allowing multiple devices to share a common line
• Output Enable (OE) input disables all outputs when held high
• Can drive up to 15 Low-power Schottky (LSTTL) loads
• Typical propagation delay of 9 ns for high-speed data switching
• Maximum low power consumption of 80µA and maximum input current of 1µA
• Output drive capability of ±6mA at 5V

Operating Conditions

The IC is suitable for operation from -40°C to +85°C. It is supplied in a 16-pin Dual In-line Package (DIP) with dimensions of 3.3 (width), 1.5 (depth) and 4.3 (height), and weighs 0.952 gm.

Applications

This versatile component is ideally suited to demanding applications in industrial control systems, communications infrastructure, and networking hardware, where reliable data selection and bus management are important.