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參數(shù)資料
| 型號： | SNJ54HC4020FKR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 計數(shù)器 |
| 英文描述： | HC/UH SERIES, ASYN NEGATIVE EDGE TRIGGERED 14-BIT UP BINARY COUNTER, CQCC20 |
| 封裝： | CERAMIC, LCC-20 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 794K |
| 代理商： | SNJ54HC4020FKR |
SN54HC4020, SN74HC4020
14BIT ASYNCHRONOUS BINARY COUNTERS
SCLS158E DECEMBER 1982 REVISED SEPTEMBER 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
VCC
TA = 25°C
SN54HC4020
SN74HC4020
UNIT
VCC
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
5.5
3.7
4.3
fclock
Clock frequency
4.5 V
28
19
22
MHz
fclock
Clock frequency
6 V
33
22
25
MHz
2 V
90
135
115
CLK high or low
4.5 V
18
27
23
tw
Pulse duration
CLK high or low
6 V
15
23
20
ns
tw
Pulse duration
2 V
70
105
90
ns
CLR high
4.5 V
14
21
18
CLR high
6 V
12
18
25
2 V
60
90
75
tsu
Setup time, CLR inactive before CLK
↓
4.5 V
12
18
15
ns
tsu
Setup time, CLR inactive before CLK
↓
6 V
10
15
13
ns
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
VCC
TA = 25°C
SN54HC4020
SN74HC4020
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
5.5
10
3.7
4.3
fmax
4.5 V
28
45
19
22
MHz
fmax
6 V
33
53
22
25
MHz
2 V
62
150
225
190
tpd
CLK
QA
4.5 V
16
30
45
38
ns
tpd
CLK
QA
6 V
12
26
38
32
ns
2 V
63
140
210
175
tPHL
CLR
Any
4.5 V
17
28
42
35
ns
tPHL
CLR
Any
6 V
13
24
36
30
ns
2 V
28
75
110
95
tt
Any
4.5 V
8
15
22
19
ns
tt
Any
6 V
6
13
19
16
ns
operating characteristics, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load
88
pF
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SNJ54HC4020J | 制造商:Texas Instruments 功能描述: |
| SNJ54HC4020W | 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:8500301FA, 14-BIT ASYNC BINARY COUNTER - Rail/Tube |
| SNJ54HC4024FK | 制造商:Texas Instruments 功能描述: |
| SNJ54HC4024J | 制造商:Texas Instruments 功能描述:Counter Single 7-Bit Binary UP 14-Pin CDIP Tube |
| SNJ54HC4040FK | 制造商:Texas Instruments 功能描述: |
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