參數(shù)資料
型號(hào): 74HC590
廠(chǎng)商: Texas Instruments, Inc.
元件分類(lèi): 通用總線(xiàn)功能
英文描述: 8-BIT BINARY COUNTERS WITH 3-STATE OUTPUT REGISTERS
中文描述: 8與3位二進(jìn)制計(jì)數(shù)器態(tài)輸出寄存器
文件頁(yè)數(shù): 6/11頁(yè)
文件大小: 66K
代理商: 74HC590
HD74HC590
6
AC Characteristics
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25
°
C
Ta = –40 to
+85
°
C
Item
Symbol
V
CC
(V)
2.0
Min Typ Max Min
Max
Unit
Test Conditions
Maximum clock
f
max
5
4
MHz
frequency
4.5
25
20
6.0
29
24
Propagation delay t
PLH
time
2.0
200 —
250
ns
CCK to
RCO
t
PHL
4.5
18
40
50
6.0
34
43
t
PLH
2.0
250 —
315
ns
CCLR
to
RCO
4.5
17
50
63
6.0
43
54
t
PLH
t
PHL
2.0
200 —
250
ns
RCK to Q
4.5
18
40
50
6.0
34
43
Output enable
t
ZL
t
ZH
2.0
150 —
190
ns
time
4.5
16
30
39
6.0
26
33
Output disable
t
LZ
t
HZ
2.0
150 —
190
ns
time
4.5
17
30
38
6.0
26
33
Pulse width
t
w
2.0
80
100
ns
4.5
16
6
20
6.0
14
17
Removal time
t
rem
2.0
5
5
ns
CCLR
to CCK
4.5
5
5
6.0
5
5
Setup time
t
su
2.0
100 —
125
ns
CCKEN
to CCK
4.5
20
–3
25
6.0
17
21
2.0
200 —
250
ns
CCK to RCK
4.5
40
10
50
6.0
34
43
相關(guān)PDF資料
PDF描述
74HC590 8-BIT BINARY COUNTER/REGISTER WITH 3-STATE OUTPUTS
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