SN54HC393, SN74HC393
DUAL 4ĆBIT BINARY COUNTERS
SCLS143D − DECEMBER 1982 − REVISED JULY 2003
D
D
Wide Operating Voltage Range of 2 V to 6 V
Outputs Can Drive Up To 10 LSTTL Loads
Low Power Consumption, 80-µA Max ICC
Typical tpd = 13 ns
±4-mA Output Drive at 5 V
Low Input Current of 1 µA Max
Dual 4-Bit Binary Counters With Individual
Clocks
Direct Clear for Each 4-Bit Counter
Can Significantly Improve System
Densities by Reducing Counter Package
Count by 50 Percent
SN54HC393 . . . J OR W PACKAGE
SN74HC393 . . . D, DB, N, NS, OR PW PACKAGE
(TOP VIEW)
1CLK
1CLR
1QA
1QB
1QC
1QD
GND
1
14
2
13
3
12
4
11
5
10
6
9
7
8
VCC
2CLK
2CLR
2QA
2QB
2QC
2QD
SN54HC393 . . . FK PACKAGE
(TOP VIEW)
1CLR
1CLK
NC
VCC
2CLK
D
D
D
D
D
D
D
description/ordering information
The ’HC393 devices contain eight flip-flops and
additional gating to implement two individual 4-bit
counters in a single package. These devices
comprise two independent 4-bit binary counters,
each having a clear (CLR) and a clock (CLK)
input. N-bit binary counters can be implemented
with each package, providing the capability of
divide by 256. The ’HC393 devices have parallel
outputs from each counter stage so that any
submultiple of the input count frequency is
available for system timing signals.
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
2CLR
NC
2QA
NC
2QB
1QD
GND
NC
2QD
2QC
1QA
NC
1QB
NC
1QC
NC − No internal connection
ORDERING INFORMATION
PACKAGE†
TA
PDIP − N
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
Tube of 25
SN74HC393N
Tube of 50
SN74HC393D
Reel of 2500
SN74HC393DR
Reel of 250
SN74HC393DT
SOP − NS
Reel of 2000
SN74HC393NSR
HC393
SSOP − DB
Reel of 2000
SN74HC393DBR
HC393
Tube of 90
SN74HC393PW
Reel of 2000
SN74HC393PWR
Reel of 250
SN74HC393PWT
CDIP − J
Tube of 25
SNJ54HC393J
SNJ54HC393J
CFP − W
Tube of 150
SNJ54HC393W
SNJ54HC393W
LCCC − FK
Tube of 55
SNJ54HC393FK
SOIC − D
−40 C 85°C
−40°C to 85 C
TSSOP − PW
−55 C 125°C
−55°C to 125 C
SN74HC393N
HC393
HC393
SNJ54HC393FK
† 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 MILĆPRFĆ38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
