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74ALS157 Просмотр технического описания (PDF) - Philips Electronics

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74ALS157
Philips
Philips Electronics Philips
74ALS157 Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
Philips Semiconductors
Data selector/multiplexer
Product specification
74ALS157/74ALS158
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
tPLH
Propagation delay
tPHL
I0n or I1n to Yn
tPLH
Propagation delay
tPHL
S to Yn
tPLH
Propagation delay
tPHL
E to Yn
tPLH
Propagation delay
tPHL
I0n or I1n to Yn
tPLH
Propagation delay
tPHL
S to Yn
tPLH
Propagation delay
tPHL
E to Yn
AC WAVEFORMS
For all waveforms, VM = 1.3V.
74ALS157
74ALS158
TEST CONDITION
Waveform 1
Waveform 1, 3
Waveform 3
Waveform 2
Waveform 2, 4
Waveform 4
LIMITS
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500
MIN
MAX
2.0
9.0
2.0
9.0
4.0
12.0
4.0
12.0
4.0
11.0
7.0
14.0
2.0
8.0
2.0
8.0
4.0
12.0
4.0
12.0
4.0
14.0
4.0
14.0
UNIT
ns
ns
ns
ns
ns
ns
I0n, I1n, S
Yn, Yn
VM
tPLH
VM
tPHL
VM
VM
SC00059
Waveform 1. Propagation Delay for Data and Select to Output
I0n, I1n, S
Yn, Yn
VM
tPHL
VM
tPLH
VM
VM
SC00060
Waveform 2. Propagation Delay for Data and Select to Output
E, S
Yn, Yn
VM
tPLH
VM
tPHL
VM
VM
SC00061
Waveform 3. Propagation Delay for Enable and
Select to Output
E, S
Yn, Yn
VM
tPHL
VM
tPLH
VM
VM
SC00062
Waveform 4. Propagation Delay for Enable and
Select to Output
1991 Feb 08
5

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