参数资料
型号: SN54HC590AWR
厂商: TEXAS INSTRUMENTS INC
元件分类: 计数器
英文描述: HC/UH SERIES, ASYN POSITIVE EDGE TRIGGERED 8-BIT UP BINARY COUNTER, CDFP16
封装: CERAMIC, FP-16
文件页数: 1/11页
文件大小: 170K
代理商: SN54HC590AWR
SN54HC590A, SN74HC590A
8-BIT BINARY COUNTERS
WITH 3-STATE OUTPUT REGISTERS
SCLS039C – DECEMBER 1982 – REVISED MAY 1997
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D 8-Bit Counter With Register
D High-Current 3-State Parallel Register
Outputs Can Drive up to 15 LSTTL Loads
D Counter Has Direct Clear
D Package Options Include Plastic
Small-Outline (D, DW), and Ceramic Flat
(W) Packages, Ceramic Chip Carriers (FK),
and Standard Plastic (N) and Ceramic (J)
300-mil DIPs
description
The ’HC590A 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 easily accomplished 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.
Both CCLK and the register clock (RCLK) input
are positive-edge triggered. If both clocks are
connected together, the counter state is always
one count ahead of the register. Internal circuitry
prevents clocking from the clock enable.
The SN54HC590A is characterized for operation over the full military temperature range of –55
°C to 125°C. The
SN74HC590A is characterized for operation from –40
°C to 85°C.
Copyright
1997, 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.
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.
SN54HC590A ...J OR W PACKAGE
SN74HC590A . . . D, DW, OR N PACKAGE
(TOP VIEW)
SN54HC590A . . . FK PACKAGE
(TOP VIEW)
NC – No internal connection
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
QB
QC
QD
QE
QF
QG
QH
GND
VCC
QA
OE
RCLK
CCKEN
CCLK
CCLR
RCO
32 1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
OE
RCLK
NC
CCKEN
CCLK
QD
QE
NC
QF
QG
Q
NC
RCO
CCLR
H
GND
NC
C
Q
B
V
CC
Q
A
Q
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