SN74LS257B, SN74LS258B
Quad 2−Input Multiplexer with 3−State Outputs
The LSTTL / MSI SN74LS257B and the SN74LS258B are ...
SN74LS257B, SN74LS258B
Quad 2−Input Multiplexer with 3−State Outputs
The LSTTL / MSI SN74LS257B and the SN74LS258B are Quad 2-Input Multiplexers with 3-state outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four outputs present the selected data in true (non-inverted) form. The outputs may be switched to a high impedance state with a HIGH on the common Output Enable (EO) Input, allowing the outputs to interface directly with bus oriented systems. It is fabricated with the
Schottky barrier diode process for high speed and is completely compatible with all ON Semiconductor TTL families.
Schottky Process For High Speed Multiplexer Expansion By Tying Outputs Together Non-Inverting 3-State Outputs Input Clamp Diodes Limit High Speed Termination Effects Special Circuitry Ensures Glitch Free Multiplexing ESD > 3500 Volts
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min Typ Max Unit
VCC
Supply Voltage
TA
Operating Ambient
Temperature Range
4.75 5.0 5.25
V
0
25
70
°C
IOH
Output Current − High
IOL
Output Current − Low
−2.6 mA
24
mA
http://onsemi.com
LOW POWER
SCHOTTKY
16 1
PLASTIC N SUFFIX CASE 648
16 1
SOIC D SUFFIX CASE 751B
16 1
SOEIAJ M SUFFIX CASE 966
© Semiconductor Components Industries, LLC, 2006
July, 2006 − Rev. 8
ORDERING INFORMATION
Device
Package
Shipping
SN74LS257BN
16 Pin DIP 2000 Units/Box
SN74LS257BD
SOIC−16
38 Units/Rail
SN74LS257BDR2 SOIC−16 2500/Tape & Reel
SN74LS2...