參數(shù)資料
型號: SN74ALS561ADWR
廠商: TEXAS INSTRUMENTS INC
元件分類: 計(jì)數(shù)器
英文描述: ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO20
封裝: PLASTIC, SO-16
文件頁數(shù): 13/15頁
文件大?。?/td> 559K
代理商: SN74ALS561ADWR
SN54ALS561A, SN74ALS561A
SYNCHRONOUS 4-BIT COUNTERS
WITH 3-STATE OUTPUTS
SDAS225A – DECEMBER 1982 – REVISED JANUARY 1995
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500
,
R2 = 500
,
TA = MIN to MAX
UNIT
SN54ALS561A
SN74ALS561A
MIN
MAX
MIN
MAX
fmax
20
30
MHz
tPLH
CLK
Any Q
4
15
4
12
ns
tPHL
CLK
Any Q
5
21
5
18
ns
tPLH
CLK
RCO
9
35
9
29
ns
tPHL
CLK
RCO
8
29
8
24
ns
tPLH
CLK
CCO
8
35
8
26
ns
tPHL
CLK
CCO
5
20
5
16
ns
tPLH
ALOAD
Any Q
10
38
10
35
ns
tPHL
ALOAD
Any Q
7
27
7
23
ns
tPLH
ALOAD
RCO
15
50
15
40
ns
tPHL
ALOAD
RCO
12
35
12
30
ns
tPLH
ALOAD
CCO
25
65
25
55
ns
tPHL
ALOAD
CCO
12
42
12
33
ns
tPLH
ABCor D
Any Q
8
35
8
30
ns
tPHL
A, B, C, or D
Any Q
7
27
7
22
ns
tPLH
ENT
RCO
5
20
5
16
ns
tPHL
ENT
RCO
4
18
4
14
ns
tPLH
ENT
CCO
12
35
12
32
ns
tPHL
ENT
CCO
4
15
4
12
ns
tPLH
ENP
CCO
5
22
5
18
ns
tPHL
ENP
CCO
4
14
4
12
ns
tPHL
ACLR
Any Q
7
28
7
22
ns
tPZH
OE
Any Q
5
24
5
19
ns
tPZL
OE
Any Q
8
28
8
23
ns
tPHZ
OE
Any Q
2
12
2
10
ns
tPLZ
OE
Any Q
2
20
4
15
ns
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
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SN74ALS561ADWG4 ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO20
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