Part # 74LS257 datasheet

Part Manufacturer: Motorola


Part Description: 74LS257

Part Details:

SN54/74LS257B QUAD 2-INPUT MULTIPLEXER SN54/74LS258B WITH 3-STATE OUTPUTS The LSTTL / MSI SN54 / 74LS257B and the SN54 / 74LS258B are Quad 2-Input Multiplexers with 3-state outputs. Four bits of data from two sourcescan be selected using a Common Data Select input. The four outputs present QUAD 2-INPUT MULTIPLEXER the selected data in true (non-inverted) form. The outputs may be switched to WITH 3-STATE OUTPUTS a high impedance state with a HIGH on the common Output Enable (EO) In-put, allowing the outputs to interface directly with bus oriented systems. It is LOW POWER SCHOTTKY fabricated with the Schottky barrier diode process for high speed and is com-pletely compatible with all Motorola TTL families. · Schottky Process For High Speed · Multiplexer Expansion By Tying Outputs Together · Non-Inverting 3-State Outputs J SUFFIX · CERAMIC Input Clamp Diodes Limit High Speed Termination Effects · CASE 620-09 Special Circuitry Ensures Glitch Free Multiplexing 16 · ESD > 3500 Volts 1 CONNECTION DIAGRAM DIP (TOP VIEW) N SUFFIX PLASTIC VCC E0 I0c I1c Zc I I 0d 1d Zd CASE 648-08 16 16 15 14 13 12 11 10 9 1 SN54/74LS257B V D SUFFIX CC = PIN 16 GND = PIN 8 SOIC

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74LS257.pdf Datasheet