SN54LS181 데이터 시트보기 (PDF) - Motorola => Freescale
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SN54LS181 Datasheet PDF : 9 Pages
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SN54 / 74LS181
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V, Pin 12 = GND, CL = 15 pF)
Limits
Symbol
Parameter
Min Typ Max Unit
Test Conditions
tPLH
tPHL
Propagation Delay,
(Cn to Cn+4)
18
13
27
20
ns
M = 0 V, (Sum or Diff Mode)
See Fig. 4 and Tables I and II
tPLH
tPHL
(Cn to F Outputs)
17
13
26
20
ns
M = 0 V, (Sum Mode)
See Fig. 4 and Table I
tPLH
tPHL
(A or B Inputs to G Output)
19
15
29
23
ns
M = S1 = S2 = 0 V, S0 = S3 = 4.5 V
(Sum Mode) See Fig. 4 and Table I
tPLH
tPHL
(A or B Inputs to G Output)
21
21
32
32
ns
M = S0 = S3 = 0 V, S1 = S2 = 4.5 V
(Diff Mode) See Fig. 5 and Table II
tPLH
tPHL
(A or B Inputs to P Output)
20
20
30
30
ns
M = S1 = S2 = 0 V, S0 = S3 = 4.5 V
(Sum Mode) See Fig. 4 and Table I
tPLH
tPHL
(A or B Inputs to P Output)
20
22
30
33
ns
M = S0 = S3 = 0 V, S1 = S2 = 4.5 V
(Diff Mode) See Fig. 5 and Table II
tPLH
tPHL
(AX or BX Inputs to FX Output)
21
13
32
20
ns
M = S1 = S2 = 0 V, S0 = S3 = 4.5 V
(Sum Mode) See Fig. 4 and Table I
tPLH
tPHL
(AX or BX Inputs to FX Output)
21
21
32
32
ns
M = S0 = S3 = 0 V, S1 = S2 = 4.5 V
(Diff Mode) See Fig. 5 and Table II
tPLH
tPHL
(AX or BX Inputs to FXH Outputs)
38
26
ns
M = S1 = S2 = 0 V, S0 = S3 = 4.5 V
(Sum Mode) See Fig. 4 and Table I
tPLH
tPHL
(AX or BX Inputs to FXH Outputs)
38
38
ns
M = S0 = S3 = 0 V, S1 = S2 = 4.5 V
(Diff Mode) See Fig. 5 and Table II
tPLH
tPHL
(A or B Inputs to F Outputs)
22
26
33
38
ns
M = 4.5 V (Logic Mode)
See Fig. 4 and Table III
tPLH
tPHL
(A or B Inputs to Cn+4 Output)
25
25
38
38
ns
M = 0 V, S0 = S3 = 4.5 V, S1 = S2 = 0 V
(Sum Mode) See Fig. 6 and Table I
tPLH
tPHL
(A or B Inputs to Cn+4 Output)
27
27
41
41
ns
M = 0 V, S0 = S3 = 0 V, S1 = S2 = 4.5 V
(Diff Mode)
tPLH
tPHL
(A or B Inputs to A = B Output)
33
41
50
62
M = S0 = S3 = 0 V, S1 = S2 = 4.5 V
ns RL = 2.0 kΩ
(Diff Mode) See Fig. 5 and Table II
AC WAVEFORMS
INPUT
1.3 V
tPLH
OUTPUT
1.3 V
1.3 V
Figure 4
tPHL
1.3 V
A INPUT
1.3 V
B INPUT
1.3 V
OUTPUT
tPLH
1.3 V
Figure 5
1.3 V
1.3 V
tPHL
1.3 V
INPUT
1.3 V
OUTPUT
tPLH
1.3 V
1.3 V
tPHL
1.3 V
Figure 6
FAST AND LS TTL DATA
5-336
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