DM74LS258B Datasheet PDF (TRI-STATE Quad 2-Data Selectors/Multiplexers) | Download National Semiconductor DM74LS258B

DM74LS258B - TRI-STATE Quad 2-Data Selectors/Multiplexers

This page provides the datasheet information for the DM74LS258B, a member of the DM74LS257BNationalSemiconductor TRI-STATE Quad 2-Data Selectors/Multiplexers family.

Datasheet Summary

Description

These Schottky-clamped high-performance multiplexers feature TRI-STATE outputs that can interface directly with data lines of bus-organized systems With all but one of the common outputs disabled (at a high impedance state) the low impedance of the single enabled output will drive the bus line to a

Features

Y TRI-STATE versions LS157 and LS158 with same pinouts Y Schottky-clamped for significant improvement in A-C performance Y Provides bus interface from multiple sources in highperformance systems Y Average propagation delay from data input 12 ns Y Typical power dissipation LS257B 50 mW LS258B 35 mW Y Alternate military aerospace devices (54LS257A 54LS258A) are available Contact a National Semiconductor Sales Office Distributor for specifications Connection Diagrams Dual-In-Line Package Dual-In-.

Datasheet Details

Part number	DM74LS258B
Manufacturer	National Semiconductor
File Size	360.47 KB
Description	TRI-STATE Quad 2-Data Selectors/Multiplexers
Datasheet	DM74LS258B Datasheet
Additional preview pages of the DM74LS258B datasheet.

📁 Similar Datasheet

DM74LS251 - 3-STATE 1-of-8 Line Data Selector/Multiplexer (Fairchild Semiconductor)

DM74LS253 - 3-STATE Data Selector/Multiplexer (Fairchild Semiconductor)

DM74LS257B - 3-STATE Quad 2-Data Selectors/Multiplexers (Fairchild Semiconductor)

DM74LS259 - 8-Bit Addressable Latch (Fairchild Semiconductor)

DM74LS20 - Dual 4-Input NAND Gate (Fairchild Semiconductor)

DM74LS221 - Dual Non-Retriggerable One-Shot (Fairchild Semiconductor)

DM74LS240 - Octal 3-STATE Buffer/Line Driver/Line Receiver (Fairchild Semiconductor)

DM74LS241 - Octal 3-STATE Buffer/Line Driver/Line Receiver (Fairchild Semiconductor)

DM74LS243 - Quadruple Bus Transceiver (Fairchild Semiconductor)

DM74LS244 - Octal 3-STATE Buffer/Line Driver/Line Receiver (Fairchild Semiconductor)

Full PDF Text Transcription

Click to expand full text

Obsolete 54LS257A DM54LS257B DM74LS257B 54LS258A DM54LS258B DM74LS258B TRI-STATE Quad 2-Data Selectors Multiplexers June 1989 54LS257A DM54LS257B DM74LS257B 54LS258A DM54LS258B DM74LS258B TRI-STATE Quad 2-Data Selectors Multiplexers General Description These Schottky-clamped high-performance multiplexers feature TRI-STATE outputs that can interface directly with data lines of bus-organized systems With all but one of the common outputs disabled (at a high impedance state) the low impedance of the single enabled output will drive the bus line to a high or low logic level To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels the output enable circuitry is designed such that the output disable times are shorter than the output enable times

Published: Aug 5, 2016 |