參數(shù)資料
型號: 74LS348
廠商: Motorola, Inc.
英文描述: 8-INPUT PRIORITY ENCODERS WITH 3-STATE OUTPUTS
中文描述: 8 - 3輸入優(yōu)先編碼器態(tài)輸出
文件頁數(shù): 4/6頁
文件大?。?/td> 216K
代理商: 74LS348
5-502
FAST AND LS TTL DATA
SN54/74LS348
SN54/74LS848
AC CHARACTERISTICS
(VCC = 5.0 V, TA = 25
°
C)
Symbol
(Input)
To
(Output)
Waveform
LS348
Limits
LS848
Limits
Unit
Test Conditions
From
Min
Typ
Max
Min
Typ
Max
tPLH
tPHL
1 thru 7
A0, A1 or A2
In-Phase
11
17
12
18
ns
RL = 667
output
20
30
20
30
CL = 45 pF
tPLH
tPHL
1 thru 7
A0, A1 or A2
Out-of-Phase
23
35
23
35
ns
output
23
35
23
35
tPZH
tPZL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPHZ
tPLZ
EI
A0, A1 or A2
25
39
25
39
ns
24
41
24
41
0 thru 7
E0
Out-of-Phase
11
18
11
18
ns
RL = 2.0
output
26
40
26
40
CL = 15 pF
0 thru 7
GS
In-Phase
38
55
38
55
ns
output
9.0
21
9.0
21
EI
GS
In-Phase
11
17
11
17
ns
output
14
36
14
36
EI
EO
In-Phase
17
21
17
21
ns
output
25
40
30
45
EI
A0, A1 or A2
18
27
18
27
ns
RL = 667
23
35
23
35
CL = 5.0 pF
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