74HC251 74251 Signal Switches, Multiplexers, Decoder IC PDIP-16

Description

74HC251 74251 Signal Switches, Multiplexers , Decoder IC PDIP-16 The 74HC251 is a high-speed CMOS integrated circuit that functions as an 8-input digital multiplexer. Its primary role is to select one of eight binary data inputs and route it to a single output channel. This data selection is controlled by a 3-bit binary address, making it a fundamental building block for managing multiple data streams in digital systems, effectively acting as a digitally-controlled signal switch. A key feature of this IC is its provision of both true (Y) and complemented (W) data outputs, offering immediate logic-level flexibility for the selected signal. Furthermore, the outputs are three-state, meaning they can be put into a high-impedance (high-Z) mode. This is controlled by a dedicated Output Enable pin; when this pin is inactive, both outputs disconnect from the internal circuit, allowing multiple devices to be connected to a shared bus without interference. Fabricated with advanced silicon-gate CMOS technology, the 74HC251 offers the high noise immunity and low power consumption typical of CMOS devices, while achieving speeds comparable to LSTTL logic. It operates over a wide supply voltage range and is designed to interface directly with other CMOS series, as well as NMOS and TTL components, providing versatility in mixed-logic system design. Features: High-Speed CMOS 8-Channel Digital Multiplexer. Three-State Outputs for Bus-Oriented Applications. Both True and Complementary Outputs Provided. Low Power Consumption. High Noise Immunity. Fanout (Over Temperature Range): Standard Outputs: 10 LSTTL Loads. Bus Driver Outputs: 15 LSTTL Loads. Wide Operating Voltage Range: 2.0V to 6.0V. Outputs Directly Interface to CMOS, NMOS, and TTL. Specifications: Parameter Specification Function: 8-Input Multiplexer Number of Channels: 8 Output Type: 3-State, True & Complement Supply Voltage (Vcc): 2.0V to 6.0V Propagation Delay: 31 ns (typ @ Vcc=6V, CL=50pF) Operating Temperature: -55°C to +125°C Input Capacitance: 10 pF Quiescent Supply Current: 8 µA (max) Logic Family: High-Speed CMOS (HC) Package: 16-Pin PDIP Applications: Data Routing and Selection. Parallel-to-Serial Conversion. Function Generation. Bus-organized System Switching. Package Contents: 1x 74HC251 74251 Signal Switches, Multiplexers, Decoder IC PDIP-16 Datasheet

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