SN54HC393, SN74HC393
DUAL 4-BIT BINARY COUNTERS
SCLS143D – DECEMBER 1982 – REVISED JULY 2003
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 Wide Operating Voltage Range of 2 V to 6 V
C0068 Outputs Can Drive Up To 10 LSTTL Loads
C0068 Low Power Consumption, 80-µA Max I
CC
C0068 Typical t
pd
= 13 ns
C0068 ±4-mA Output Drive at 5 V
C0068 Low Input Current of 1 µA Max
C0068 Dual 4-Bit Binary Counters With Individual
Clocks
C0068 Direct Clear for Each 4-Bit Counter
C0068 Can Significantly Improve System
Densities by Reducing Counter Package
Count by 50 Percent
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.
ORDERING INFORMATION
T
A
PACKAGE
†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
–40 C to 85 C
PDIP – N Tube of 25 SN74HC393N SN74HC393N
SOIC – D
Tube of 50 SN74HC393D
HC393Reel of 2500 SN74HC393DR
Reel of 250 SN74HC393DT
° ° SOP – NS Reel of 2000 SN74HC393NSR HC393
SSOP – DB Reel of 2000 SN74HC393DBR HC393
TSSOP – PW
Tube of 90 SN74HC393PW
HC393Reel of 2000 SN74HC393PWR
Reel of 250 SN74HC393PWT
–55 C to 125 C
CDIP – J Tube of 25 SNJ54HC393J SNJ54HC393J
° ° CFP – W Tube of 150 SNJ54HC393W SNJ54HC393W
LCCC – FK Tube of 55 SNJ54HC393FK SNJ54HC393FK
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
3212019
910111213
4
5
6
7
8
18
17
16
15
14
2CLR
NC
2Q
A
NC
2Q
B
1Q
A
NC
1Q
B
NC
1Q
C
1CLR 1CLK NC V 2CLK
D
GND
NC
SN54HC393 . . . FK PACKAGE
(TOP VIEW)
CC
NC – No internal connection
SN54HC393 ...J OR W PACKAGE
SN74HC393 . . . D, DB, N, NS, OR PW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1CLK
1CLR
1Q
A
1Q
B
1Q
C
1Q
D
GND
V
CC
2CLK
2CLR
2Q
A
2Q
B
2Q
C
2Q
D
1Q
D
2Q
C
2Q
Copyright  2003, Texas Instruments Incorporated
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.
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 MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.