CD54HC157 Datasheet, PDF (1/13 Pages) Texas Instruments – High-Speed CMOS Logic Quad 2-Input Multiplexers

The CD54HC158 and
CD54/74HC157, CD54/74HCT157,
CD54/74HC158, CD54/74HCT158 ^{CD74HC158 are obsolete and}
no longer are supplied.
Data sheet acquired from Harris Semiconductor
SCHS153C
September 1997 - Revised October 2003
High-Speed CMOS Logic
Quad 2-Input Multiplexers
[ /Title
(CD74H
C157,
CD74H
CT157,
CD74H
C158,
CD74H
CT158)
/Subject
(High
Speed
Features
Description
• Common Select Inputs
• Separate Enable Inputs
• Buffered inputs and Outputs
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55^oC to 125^oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
The ’HC157, ’HCT157, ’HC158, and ’HCT158 are quad 2-
input multiplexers which select four bits of data from two
sources under the control of a common Select input (S). The
Enable input (E) is active Low. When (E) is High, all of the
outputs in the 158, the inverting type, (1Y-4Y) are forced
High and in the 157, the non-inverting type, all of the outputs
(1Y-4Y) are forced Low, regardless of all other input
conditions.
Moving data from two groups of registers to four common
output buses is a common use of these devices. The state of
the Select input determines the particular register from
which the data comes. They can also be used as function
generators.
• HC Types
- 2V to 6V Operation
- High Noise Immunity: N_IL = 30%, N_IH = 30%of V_CC at
V_CC = 5V
• 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 ≤ 1µA at V_OL, V_OH
Ordering Information
PART NUMBER
CD54HC157F3A
CD54HCT157F3A
CD54HCT158F3A
CD74HC157E
TEMP. RANGE
(^oC)
-55 to 125
-55 to 125
-55 to 125
-55 to 125
PACKAGE
16 Ld CERDIP
16 Ld CERDIP
16 Ld CERDIP
16 Ld PDIP
Pinout
CD54HC157, CD54HCT157, CD54HC158, CD54HCT158
(CERDIP)
CD74HC157, CD74HCT157, CD74HC158
(PDIP, SOIC)
CD74HCT158
(PDIP)
TOP VIEW
S1
1I₀ 2
1I₁ 3
1Y 4
2I₀ 5
2I₁ 6
2Y 7
GND 8
16 V_CC
15 E
14 4I₀
13 4I₁
12 4Y
11 3I₀
10 3I₁
9 3Y
CD74HC157M
-55 to 125
16 Ld SOIC
CD74HC157MT
-55 to 125
16 Ld SOIC
CD74HC157M96
-55 to 125
16 Ld SOIC
CD74HCT157E
-55 to 125
16 Ld PDIP
CD74HCT157M
-55 to 125
16 Ld SOIC
CD74HCT157MT
-55 to 125
16 Ld SOIC
CD74HCT157M96
-55 to 125
16 Ld SOIC
CD74HCT158E
-55 to 125
16 Ld PDIP
NOTE: When ordering, use the entire part number. The suffix 96
denotes tape and reel. The suffix T denotes a small-quantity reel of
250.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © 2003, Texas Instruments Incorporated
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