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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： | 8/11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
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
VCC
TA = 25°C
SN54HC590A
SN74HC590A
UNIT
VCC
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
0
4
0
2.5
0
3.2
fclock
Clock frequency
4.5 V
0
20
0
13
16
MHz
6 V
0
24
0
16
0
19
2 V
125
200
155
CCLK or RCLK high or low
4.5 V
25
38
31
t
Pulse duration
6 V
21
32
26
ns
tw
Pulse duration
2 V
100
150
125
ns
CCLR low
4.5 V
20
30
25
6 V
17
26
21
↑
2 V
100
150
125
CCKEN low before CCLK
↑
4.5 V
20
30
25
6 V
17
26
21
↑
2 V
100
150
125
tsu
Setup time
CCLR high (inactive) before CCLK
↑
4.5 V
20
30
25
ns
6 V
17
26
21
↑
2 V
100
150
125
CCLK
↑ before RCLK↑
4.5 V
20
30
25
6 V
17
26
21
↑
2 V
50
75
60
th
Hold time
CCKEN low after CCLK
↑
4.5 V
10
15
12
ns
6 V
9
13
11
This setup time ensures that the register gets stable data from the counter outputs. The clocks may be tied together, in which case the register
is one clock pulse behind the counter.
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