參數(shù)資料
型號: SN54ALS190
廠商: Texas Instruments, Inc.
元件分類: 通用總線功能
英文描述: SYNCHRONOUS 4-BIT UP/DOWN DECADE AND BINARY COUNTERS
中文描述: 同步4位向上/向下十年和二進制計數(shù)器
文件頁數(shù): 7/8頁
文件大?。?/td> 140K
代理商: SN54ALS190
FROM
(INPUT)
TO
(OUTPUT)
fmax
MHz
LOAD
Any Q
ns
ns
ns
ns
ns
ns
ns
ns
A, B, C, D
Any Q
CLK
RCO
CLK
Any Q
CLK
CTEN
D/U
D/U
MAX/MIN
MAX/MIN
RCO
RCO
SN54ALS190, SN54ALS191, SN74ALS190, SN74ALS191
SYNCHRONOUS 4-BIT UP/DOWN DECADE COUNTERS
SDAS210 – D2661, DECEMBER 1982 – REVISED MAY 1986
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
7
switching characteristics (see Note 1)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500
,
TA = MIN to MAX
SN54ALS190
SN54ALS191
MIN
MAX
20
20
7
37
8
34
4
25
4
25
5
24
5
25
3
26
3
22
8
37
8
34
12
45
10
36
8
35
8
30
4
21
4
23
PARAMETER
UNIT
SN74ALS190
SN74ALS191
MIN
25
30
8
8
4
5
5
5
3
3
8
8
15
10
8
8
4
4
MAX
’ALS190
’ALS191
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
30
30
21
21
20
20
18
18
31
31
37
28
25
25
18
18
NOTE 1: Load circuit and voltage waveforms are shown in Section 1.
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