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SN54HC193, SN74HC193
4BIT SYNCHRONOUS UP/DOWN COUNTERS
(DUAL CLOCK WITH CLEAR)
SCLS122D DECEMBER 1982 REVISED OCTOBER 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Wide Operating Voltage Range of 2 V to 6 V
D Outputs Can Drive Up To 10 LSTTL Loads
D Low Power Consumption, 80-A Max ICC
D Typical tpd = 20 ns
D ±4-mA Output Drive at 5 V
D Low Input Current of 1 A Max
D Look-Ahead Circuitry Enhances Cascaded
Counters
D Fully Synchronous in Count Modes
D Parallel Asynchronous Load for Modulo-N
Count Lengths
D Asynchronous Clear
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
B
QB
QA
DOWN
UP
QC
QD
GND
VCC
A
CLR
BO
CO
LOAD
C
D
SN54HC193 ...J OR W PACKAGE
SN74HC193 . . . D, N, NS, OR PW PACKAGE
(TOP VIEW)
32 1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
CLR
BO
NC
CO
LOAD
QA
DOWN
NC
UP
QC
Q
B
NC
D
C
V
A
D
GND
NC
SN54HC193 . . . FK PACKAGE
(TOP VIEW)
NC No internal connection
B
CC
Q
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
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP N
Tube of 25
SN74HC193N
Tube of 40
SN74HC193D
SOIC D
Reel of 2500
SN74HC193DR
HC193
40
°C to 85°C
SOIC D
Reel of 250
SN74HC193DT
HC193
40
°C to 85°C
SOP NS
Reel of 2000
SN74HC193NSR
HC193
Tube of 90
SN74HC193PW
TSSOP PW
Reel of 2000
SN74HC193PWR
HC193
TSSOP PW
Reel of 250
SN74HC193PWT
HC193
CDIP J
Tube of 25
SNJ54HC193J
55
°C to 125°C
CFP W
Tube of 150
SNJ54HC193W
55 C to 125 C
LCCC FK
Tube of 55
SNJ54HC193FK
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 Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
On products compliant to MILPRF38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.