SN54HC590A Datasheet, PDF (1/19 Pages) Texas Instruments – 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
Outputs Can Drive Up To 15 LSTTL Loads
D Low Power Consumption, 80-µA Max I_CC
D Typical t_pd = 14 ns
SN54HC590A . . . J OR W PACKAGE
SN74HC590A . . . D, DW, OR N PACKAGE
(TOP VIEW)
Q_{B 1}
Q_C 2
Q_D 3
Q_E 4
Q_F 5
Q_G 6
Q_H 7
GND 8
16 ^V_CC
15 Q_A
14 OE
13 RCLK
12 CCKEN
11 CCLK
10 CCLR
9 RCO
SN54HC590A, SN74HC590A
8ĆBIT BINARY COUNTERS
WITH 3ĆSTATE OUTPUT REGISTERS
SCLS039F − DECEMBER 1982 − REVISED SEPTEMBER 2003
D ±6-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
D 8-Bit Counter With Register
D Counter Has Direct Clear
SN54HC590A . . . FK PACKAGE
(TOP VIEW)
3 2 1 20 19
Q_{D 4}
18 ^OE
Q_E 5
17 RCLK
NC 6
16 NC
Q_F 7
15 CCKEN
Q_G 8
14 CCLK
9 10 11 12 13
description/ordering information
NC − No internal connection
The ’HC590A 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†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N Tube of 25
SN74HC590AN
SN74HC590AN
Tube of 40
SN74HC590AD
−40°C to 85°C
SOIC − D
Reel of 2500
Reel of 250
SN74HC590ADR
SN74HC590ADT
HC590A
Tube of 40
SOIC − DW
Reel of 2000
SN74HC590ADW
SN74HC590ADWR
HC590A
CDIP − J
Tube of 25
SNJ54HC590AJ
SNJ54HC590AJ
−55°C to 125°C CFP − W
Tube of 150
SNJ54HC590AW
SNJ54HC590AW
LCCC - FK Tube of 55
SNJ54HC590AFK SNJ54HC590AFK
† _{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 DALLAS, TEXAS 75265
Copyright  2003, Texas Instruments Incorporated
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.
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