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74LS257 Datasheet

  • 74LS257

  • LOW POWER SCHOTTKY

  • 122.00KB

  • 8頁(yè)

  • ONSEMI

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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 (E
O
) 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
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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
V
CC
T
A
I
OH
I
OL
Parameter
Supply Voltage
Operating Ambient
Temperature Range
Output Current 鈥?High
Output Current 鈥?Low
Min
4.75
0
Typ
5.0
25
Max
5.25
70
鈥?2.6
24
Unit
V
擄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
漏
Semiconductor Components Industries, LLC, 1999
1
December, 1999 鈥?Rev. 6
Publication Order Number:
SN74LS257B/D

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