SN74LS257B SN74LS258B Quad 2-Input Multiplexer with 3-State Outputs
The LSTTL / MSI SN74LS257B and the SN74LS258B are Qu...
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.
http://onsemi.com
LOW POWER
SCHOTTKY
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
16 1
GUARANTEED OPERATING RANGES
Symbol VCC TA IOH IOL Parameter Supply Voltage Operating Ambient Temperature Range Output Current – High Output Current – Low Min 4.75 0 Typ 5.0 25 Max 5.25 70 – 2.6 24 Unit V °C mA mA
16
PLASTIC N SUFFIX CASE 648
1
SOIC D SUFFIX CASE 751B
ORDERING INFORMATION
Device SN74LS257BN SN74LS257BD SN74LS258BN SN74LS258BD Package 16 Pin DIP 16 Pin 16 Pin DIP 16 Pin Shipping 2000 Units/Box 2500/Tape & Reel 2000 Units/Box 2500/Tape & Reel
© Semiconductor Components Industries, LLC, 1999
1
December, 1999 – Rev. 6
Publication Order Numbe...
