74ALS151 查看數據表（PDF） - Philips Electronics
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74ALS151 Datasheet PDF : 8 Pages
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Philips Semiconductors
8-input multiplexer
Product specification
74ALS151
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
tPLH
Propagation delay
tPHL
In to Y
tPLH
Propagation delay
tPHL
In to Y
tPLH
Propagation delay
tPHL
Sn to Y
tPLH
Propagation delay
tPHL
Sn to Y
tPLH
Propagation delay
tPHL
E to Y
tPLH
Propagation delay
tPHL
E to Y
AC WAVEFORMS
For all waveforms, VM = 1.3V.
VIN
VM
VM
tPHL
tPLH
VOUT
VM
VM
SF00093
Waveform 1. Propagation Delay for Inverting Output
TEST CONDITION
Waveform 1
Waveform 2
Waveform 1, 2
Waveform 1, 2
Waveform 1
Waveform 1
LIMITS
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
MIN
MAX
3.0
12.0
5.0
12.0
3.0
15.0
5.0
15.0
5.0
15.0
7.0
16.0
5.0
15.0
5.0
16.0
4.0
12.0
4.0
12.0
4.0
12.0
5.0
14.0
UNIT
ns
ns
ns
ns
ns
ns
VIN
VM
VM
tPLH
tPHL
VOUT
VM
VM
SF00092
Waveform 2. Propagation Delay for Non-inverting Output
TEST CIRCUIT AND WAVEFORMS
VIN
PULSE
GENERATOR
VCC
VOUT
D.U.T.
90%
NEGATIVE
PULSE
tw
VM
10%
tTHL (tff)
VM
10%
tTLH (tr )
90%
AMP (V)
0.3V
RT
CL RL
Test Circuit for Totem-pole Outputs
POSITIVE
PULSE
10%
tTLH (tr )
90%
VM
tw
tTHL (tf )
90%
VM
AMP (V)
10%
0.3V
DEFINITIONS:
RL = Load resistor;
see AC electrical characteristics for value.
CL = Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
Input Pulse Definition
INPUT PULSE REQUIREMENTS
Family
Amplitude VM Rep.Rate tw tTLH
74ALS 3.5V 1.3V 1MHz 500ns 2.0ns
tTHL
2.0ns
SC00005
1991 Feb 08
5
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