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74ALS20A Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. 74ALS20A
Description  Dual 4-Input NAND gate
Download  7 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74ALS20A Datasheet(HTML) 4 Page - NXP Semiconductors

   
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Philips Semiconductors
Product specification
74ALS20A
Dual 4-input NAND gate
1996 Jul 01
4
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITION
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
UNIT
MIN
MAX
tPLH
tPHL
Propagation delay
nA, nB, nC, nD to nY
Waveform 1
2.0
3.0
11.0
10.0
ns
AC WAVEFORMS
For all waveforms, VM = 1.3V.
VM
VM
VM
VM
tPLH
tPHL
nA, nB, nC, nD
nY
SC00027
Waveform 1.
Propagation Delay for Data to Output
TEST CIRCUIT AND WAVEFORMS
tw
90%
VM
10%
90%
VM
10%
90%
VM
10%
90%
VM
10%
NEGATIVE
PULSE
POSITIVE
PULSE
tw
AMP (V)
0.3V
0.3V
tTHL (tff)
INPUT PULSE REQUIREMENTS
Rep.Rate
tw
tTLH
tTHL
1MHz
500ns
2.0ns
2.0ns
Input Pulse Definition
VCC
Family
74ALS
D.U.T.
PULSE
GENERATOR
RL
CL
RT
VIN
VOUT
Test Circuit for Totem-pole Outputs
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.
tTHL (tf )
tTLH (tr )
tTLH (tr )
AMP (V)
Amplitude
3.5V
1.3V
VM
SC00005


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