Data sheet acquired from Harris Semiconductor
SCHS153
CD74HC157, CD74HCT157,
CD74HC158, CD74HCT158
High Speed CMOS Logic
Quad 2-Input Multiplexers
September 1997
Features
鈥?Common Select Inputs
鈥?Separate Enable Inputs
鈥?Buffered inputs and Outputs
鈥?Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
鈥?Wide Operating Temperature Range . . . -55
o
C to 125
o
C
鈥?Balanced Propagation Delay and Transition Times
鈥?Signi铿乧ant Power Reduction Compared to LSTTL
Logic ICs
鈥?HC Types
- 2V to 6V Operation
- High Noise Immunity: N
IL
= 30%, N
IH
= 30%of V
CC
at
V
CC
= 5V
鈥?HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
IL
= 0.8V (Max), V
IH
= 2V (Min)
- CMOS Input Compatibility, I
l
鈮?/div>
1碌A at V
OL
, V
OH
[ /Title
(CD74H
C157,
CD74H
CT157,
CD74H
C158,
CD74H
CT158)
/Subject
(High
Speed
Pinout
CD74HC157, CD74HCT157, CD74HC158, CD74HCT158
(PDIP, SOIC)
TOP VIEW
S 1
1I
0
2
1I
1
3
1Y 4
2I
0
5
2I
1
6
2Y 7
GND 8
16 V
CC
15 E
14 4I
0
13 4I
1
12 4Y
11 3I
0
10 3I
1
9 3Y
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
漏
Harris Corporation 1997
File Number
1642.2
1
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