ꢀꢁꢂ ꢃ ꢄꢅ ꢆ ꢇꢈ ꢉ ꢀꢁꢊ ꢃꢄ ꢅꢆ ꢇꢈ
ꢃ ꢋꢌꢍ ꢎ ꢀꢏ ꢁꢅꢄꢐꢑ ꢁꢑ ꢒꢀ ꢒꢓ ꢔꢕꢑ ꢖ ꢁ ꢅꢑ ꢒ ꢁꢎ ꢗꢐ ꢀ
ꢘꢕꢒꢙ ꢚ ꢅꢚ ꢑ ꢅꢛ ꢖ ꢍꢎ ꢄ ꢅ ꢚꢗ ꢙꢐ ꢜ
SCLS122D − DECEMBER 1982 − REVISED OCTOBER 2003
D
D
D
D
D
D
Wide Operating Voltage Range of 2 V to 6 V
Outputs Can Drive Up To 10 LSTTL Loads
D
Look-Ahead Circuitry Enhances Cascaded
Counters
D
Fully Synchronous in Count Modes
Low Power Consumption, 80-µA Max I
CC
D
Parallel Asynchronous Load for Modulo-N
Count Lengths
Typical t = 20 ns
pd
4-mA Output Drive at 5 V
D
Asynchronous Clear
Low Input Current of 1 µA Max
SN54HC193 . . . J OR W PACKAGE
SN74HC193 . . . D, N, NS, OR PW PACKAGE
(TOP VIEW)
SN54HC193 . . . FK PACKAGE
(TOP VIEW)
B
V
A
1
2
3
4
5
6
7
8
16
15
14
13
CC
Q
3
2
1
20 19
18
B
A
CLR
BO
Q
4
5
6
7
8
A
Q
CLR
BO
DOWN
NC
17
16
DOWN
UP
NC
12 CO
15 CO
UP
11
10
9
Q
Q
LOAD
C
D
14
9 10 11 12 13
LOAD
Q
C
C
D
GND
NC − No internal connection
description/ordering information
The
’HC193
devices
are
4-bit
synchronous,
reversible,
up/down
binary
counters.
Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change
coincidentally with each other when so instructed by the steering logic. This mode of operation eliminates the
output counting spikes normally associated with asynchronous (ripple-clock) counters.
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP − N
Tube of 25
Tube of 40
Reel of 2500
Reel of 250
Reel of 2000
Tube of 90
Reel of 2000
Reel of 250
Tube of 25
Tube of 150
Tube of 55
SN74HC193N
SN74HC193N
SN74HC193D
SN74HC193DR
SN74HC193DT
SN74HC193NSR
SN74HC193PW
SN74HC193PWR
SN74HC193PWT
SNJ54HC193J
SNJ54HC193W
SNJ54HC193FK
SOIC − D
SOP − NS
HC193
HC193
−40°C to 85°C
TSSOP − PW
HC193
CDIP − J
CFP − W
LCCC − FK
SNJ54HC193J
SNJ54HC193W
SNJ54HC193FK
−55°C to 125°C
†
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.
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Copyright 2003, Texas Instruments Incorporated
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