DM74LS251 - TRI-STATE Data Selectors/Multiplexers

National Semiconductor

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Datasheet Details

Part number	DM74LS251
Manufacturer	National Semiconductor ↗
File Size	135.33 KB
Description	TRI-STATE Data Selectors/Multiplexers
Datasheet	DM74LS251_NationalSemiconductor.pdf

DM74LS251 Product details

Description

These data selectors multiplexers contain full on-chip binary decoding to select one-of-eight data sources and feature a strobe-controlled TRI-STATE output The strobe must be at a low logic level to enable these devices The TRI-STATE outputs permit direct connection to a common bus When the strobe input is high both outputs are in a high-impedance state in which both the upper and lower transistors of each totem-pole output are off and the output neither drives nor loads the bus significantly Wh

Features

Y Y Y Y Y Y Y Y TRI-STATE version of LS151 Interface directly with system bus Perform parallel-to-serial conversion Permit multiplexing from N-lines to one line Complementary outputs provide true and inverted data Maximum number of common outputs 54LS 49 74LS 129 Typical propagation delay time (D to Y) 54LS 17 ns 74LS 17 ns Typical power dissipation 54LS 35 mW 74LS 35 mW Connection Diagram Dual-In-Line Package Function Table Inputs Select C X L L L L H H H H B X L L H H L L H H A X L H L H.

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Other Datasheets by National Semiconductor

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Published: Oct 9, 2005 |