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参数资料
| 型号： | SNJ54HC595FKR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 计数移位寄存器 |
| 英文描述： | HC/UH SERIES, 8-BIT RIGHT SERIAL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, CQCC20 |
| 封装： | CERAMIC, LCC-20 |
| 文件页数： | 23/25页 |
| 文件大小： | 817K |
| 代理商： | SNJ54HC595FKR |
www.ti.com
SCLS041H – DECEMBER 1982 – REVISED NOVEMBER 2009
TIMING REQUIREMENTS
over operating free-air temperature range (unless otherwise noted)
TA = 25°C
SN54HC595
SN74HC595
VCC
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
2 V
6
4.2
5
fclock
Clock frequency
4.5 V
31
21
25
MHz
6 V
36
25
29
2 V
80
120
100
SRCLK or RCLK high or low
4.5 V
16
24
20
6 V
14
20
17
tw
Pulse duration
ns
2 V
80
120
100
SRCLR low
4.5 V
16
24
20
6 V
14
20
17
2 V
100
150
125
SER before SRCLK
↑
4.5 V
20
30
25
6 V
17
25
21
2 V
75
113
94
SRCLK
↑ before RCLK↑(1)
4.5 V
15
23
19
6 V
13
19
16
tsu
Setup time
ns
2 V
50
75
65
SRCLR low before RCLK
↑
4.5 V
10
15
13
6 V
9
13
11
2 V
50
75
60
SRCLR high (inactive) before SRCLK
↑
4.5 V
10
15
12
6 V
9
13
11
2 V
0
th
Hold time, SER after SRCLK
↑
4.5 V
0
ns
6 V
0
(1)
This setup time allows the storage register to receive stable data from the shift register. The clocks can be tied together, in which case
the shift register is one clock pulse ahead of the storage register.
Copyright 1982–2009, Texas Instruments Incorporated
7
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