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PDF 74ALS253 Data sheet ( Hoja de datos )
| Número de pieza | 74ALS253 | |
| Descripción | Dual 4-input multiplexer 3-State | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
74ALS253
Dual 4–input multiplexer (3–State)
Product specification
IC05 Data Handbook
1991 Feb 08
Philips
Semiconductors
1 page  
Philips Semiconductors
Dual 4-input multiplexer (3-State)
Product specification
74ALS253
AC WAVEFORMS
For all waveforms, VM = 1.3V.
In, Sn
VM
tPLH
Yn
VM
tPHL
VM
VM
SF00802
Waveform 1. Propagation Delay for Data and Select to Output
OEn
Yn
VM
tPZH
VM
tPHZ
VM
VOH –0.3V
0V
SF00804
Waveform 2. 3-State Output Enable Time to High Level
and Output Disable Time from High Level
OEn
VM
VM
tPZL
tPLZ
Yn VM
3.5V
VOL +0.3V
SC00075
Waveform 3. 3-State Output Enable Time to Low Level
and Output Disable Time from Low Level
TEST CIRCUIT AND WAVEFORMS
PULSE
GENERATOR
VIN
VCC
VOUT
D.U.T.
RL
7.0V
90%
NEGATIVE
PULSE
tw
VM
10%
tTHL (tff)
VM
10%
tTLH (tr )
90%
AMP (V)
0.3V
RT CL RL
Test Circuit for 3-State Outputs
SWITCH POSITION
TEST SWITCH
tPLZ, tPZL closed
All other open
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.
POSITIVE
PULSE
10%
tTLH (tr )
90%
VM
tw
tTHL (tf )
90%
VM
AMP (V)
10%
0.3V
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
SC00072
1991 Feb 08
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet 74ALS253.PDF ] | |
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