SCLS039F 鈭?DECEMBER 1982 鈭?REVISED SEPTEMBER 2003
SN54HC590A, SN74HC590A
8 BIT BINARY COUNTERS
WITH 3 STATE OUTPUT REGISTERS
D
2-V to 6-V V
CC
Operation
D
High-Current 3-State Parallel Register
D
D
Outputs Can Drive Up To 15 LSTTL Loads
Low Power Consumption, 80-碌A(chǔ) Max I
CC
Typical t
pd
= 14 ns
SN54HC590A . . . J OR W PACKAGE
SN74HC590A . . . D, DW, OR N PACKAGE
(TOP VIEW)
D
D
D
D
鹵6-mA
Output Drive at 5 V
Low Input Current of 1
碌A(chǔ)
Max
8-Bit Counter With Register
Counter Has Direct Clear
SN54HC590A . . . FK PACKAGE
(TOP VIEW)
Q
H
NC 鈭?No internal connection
description/ordering information
The 鈥橦C590A devices contain an 8-bit binary counter that feeds an 8-bit storage register. The storage register
has parallel outputs. Separate clocks are provided for both the binary counter and storage register. The binary
counter features direct clear (CCLR) and count-enable (CCKEN) inputs. A ripple-carry output (RCO) is provided
for cascading. Expansion is accomplished easily for two stages by connecting RCO of the first stage to CCKEN
of the second stage. Cascading for larger count chains can be accomplished by connecting RCO of each stage
to the counter clock (CCLK) input of the following stage.
CCLK and the register clock (RCLK) inputs are positive-edge triggered. If both clocks are connected together,
the counter state always is one count ahead of the register. Internal circuitry prevents clocking from the clock
enable.
ORDERING INFORMATION
TA
PACKAGE鈥?/div>
PDIP 鈭?N
Tube of 25
Tube of 40
鈭?0擄C to 85擄C
SOIC 鈭?D
Reel of 2500
Reel of 250
Tube of 40
SOIC 鈭?DW
CDIP 鈭?J
鈭?5 C 125擄C
鈭?5擄C to 125 C
CFP 鈭?W
LCCC - FK
Reel of 2000
Tube of 25
Tube of 150
Tube of 55
ORDERABLE
PART NUMBER
SN74HC590AN
SN74HC590AD
SN74HC590ADR
SN74HC590ADT
SN74HC590ADW
SN74HC590ADWR
SNJ54HC590AJ
SNJ54HC590AW
SNJ54HC590AFK
HC590A
SNJ54HC590AJ
SNJ54HC590AW
SNJ54HC590AFK
HC590A
TOP-SIDE
MARKING
SN74HC590AN
鈥?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.
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.
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
GND
NC
RCO
CCLR
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.
Q
B
Q
C
Q
D
Q
E
Q
F
Q
G
Q
H
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
Q
A
OE
RCLK
CCKEN
CCLK
CCLR
RCO
Q
D
Q
E
NC
Q
F
Q
G
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
NC
V
CC
Q
A
OE
RCLK
NC
CCKEN
CCLK
Q
C
Q
B
Copyright
錚?/div>
2003, Texas Instruments Incorporated
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