C0083C0078C0053C0052C0072C0067C0049C0053C0055C0044 C0083C0078C0055C0052C0072C0067C0049C0053C0055
C0081C0085C0065C0068C0082C0085C0080C0076C0069 C0050C0262C0076C0073C0078C0069 C0084C0079 C0049C0262C0076C0073C0078C0069 C0068C0065C0084C0065 C0083C0069C0076C0069C0067C0084C0079C0082C0083C0047C0077C0085C0076C0084C0073C0080C0076C0069C0088C0069C0082C0083
SCLS113D − DECEMBER 1982 − REVISED SEPTEMBER 2003
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 Wide Operating Voltage Range of 2 V to 6 V
C0068 Outputs Can Drive Up To 15 LSTTL Loads
C0068 Low Power Consumption, 80-µA Max I
CC
C0068 Typical t
pd
= 11 ns
C0068 ±6-mA Output Drive at 5 V
C0068 Low Input Current of 1 µA Max
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A/B
1A
1B
1Y
2A
2B
2Y
GND
V
CC
G
4A
4B
4Y
3A
3B
3Y
SN54HC157 ...J OR W PACKAGE
SN74HC157 . . . D, DB, N, NS, OR PW PACKAGE
(TOP VIEW)
3212019
910111213
4
5
6
7
8
18
17
16
15
14
4A
4B
NC
4Y
3A
1B
1Y
NC
2A
2B
1A A/B NC
3Y 3B
V G
2Y
GND
NC
SN54HC157 . . . FK PACKAGE
(TOP VIEW)
CC
NC − No internal connection
description/ordering information
These data selectors/multiplexers contain inverters and drivers to supply full data selection to the four output
gates. A separate strobe (G) input is provided. A 4-bit word is selected from one of two sources and is routed
to the four outputs. The ’HC157 devices present true data.
ORDERING INFORMATION
T
A
PACKAGE
†
PACKAGE
†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N Tube of 25 SN74HC157N SN74HC157N
Tube of 40 SN74HC157D
SOIC − D
Reel of 2500 SN74HC157DR
HC157
Reel of 250 SN74HC157DT
−40°C to 85°C
SOP − NS Reel of 2000 SN74HC157NSR HC157
SSOP − DB Reel of 2000 SN74HC157DBR HC157
Tube of 90 SN74HC157PW
TSSOP − PW
Reel of 2000 SN74HC157PWR
HC157
Reel of 250 SN74HC157PWT
CDIP − J Tube of 25 SNJ54HC157J SNJ54HC157J
−55°C to 125°C
CFP − W Tube of 150 SNJ54HC157W SNJ54HC157W
LCCC − FK Tube of 55 SNJ54HC157FK SNJ54HC157FK
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright  2003, Texas Instruments IncorporatedC0080C0082C0079C0068C0085C0067C0084C0073C0079C0078 C0068C0065C0084C0065 C0105C0110C0102C0111C0114C0109C0097C0116C0105C0111C0110 C0105C0115 C0099C0117C0114C0114C0101C0110C0116 C0097C0115 C0111C0102 C0112C0117C0098C0108C0105C0099C0097C0116C0105C0111C0110 C0100C0097C0116C0101C0046
C0080C0114C0111C0100C0117C0099C0116C0115 C0099C0111C0110C0102C0111C0114C0109 C0116C0111 C0115C0112C0101C0099C0105C0102C0105C0099C0097C0116C0105C0111C0110C0115 C0112C0101C0114 C0116C0104C0101 C0116C0101C0114C0109C0115 C0111C0102 C0084C0101C0120C0097C0115 C0073C0110C0115C0116C0114C0117C0109C0101C0110C0116C0115
C0115C0116C0097C0110C0100C0097C0114C0100 C0119C0097C0114C0114C0097C0110C0116C0121C0046 C0080C0114C0111C0100C0117C0099C0116C0105C0111C0110 C0112C0114C0111C0099C0101C0115C0115C0105C0110C0103 C0100C0111C0101C0115 C0110C0111C0116 C0110C0101C0099C0101C0115C0115C0097C0114C0105C0108C0121 C0105C0110C0099C0108C0117C0100C0101
C0116C0101C0115C0116C0105C0110C0103 C0111C0102 C0097C0108C0108 C0112C0097C0114C0097C0109C0101C0116C0101C0114C0115C0046
C0079C0110 C0112C0114C0111C0100C0117C0099C0116C0115 C0099C0111C0109C0112C0108C0105C0097C0110C0116 C0116C0111 C0077C0073C0076C0262C0080C0082C0070C0262C0051C0056C0053C0051C0053C0044 C0097C0108C0108 C0112C0097C0114C0097C0109C0101C0116C0101C0114C0115 C0097C0114C0101 C0116C0101C0115C0116C0101C0100
C0117C0110C0108C0101C0115C0115 C0111C0116C0104C0101C0114C0119C0105C0115C0101 C0110C0111C0116C0101C0100C0046 C0079C0110 C0097C0108C0108 C0111C0116C0104C0101C0114 C0112C0114C0111C0100C0117C0099C0116C0115C0044 C0112C0114C0111C0100C0117C0099C0116C0105C0111C0110
C0112C0114C0111C0099C0101C0115C0115C0105C0110C0103 C0100C0111C0101C0115 C0110C0111C0116 C0110C0101C0099C0101C0115C0115C0097C0114C0105C0108C0121 C0105C0110C0099C0108C0117C0100C0101 C0116C0101C0115C0116C0105C0110C0103 C0111C0102 C0097C0108C0108 C0112C0097C0114C0097C0109C0101C0116C0101C0114C0115C0046