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PDF 74F138 Data sheet ( Hoja de datos )
| Número de pieza | 74F138 | |
| Descripción | 1-of-8 decoder/demultiplexer | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de 74F138 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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INTEGRATED CIRCUITS
74F138
1-of-8 decoder/demultiplexer
Product specification
IC15 Data Handbook
1991 Feb 14
Philips
Semiconductors
1 page  
Philips Semiconductors
1-of-8 decoder/demultiplexer
Product specification
74F138
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
TEST
CONDITION
tPLH Propagation delay
tPHL An to Qn
tPLH Propagation delay
tPHL E0 or E1 to Qn
tPLH Propagation delay
tPHL E2 to Qn
Waveform 1, 2
Waveform 2
Waveform 1
LIMITS
VCC = +5.0V
Tamb = +25°C
CL = 50pF
RL = 500Ω
VCC = +5.0V ± 10%
Tamb = 0°C to +70°C
CL = 50pF
RL = 500Ω
VCC = +5.0V ± 10%
Tamb = –40°C to +85°C
CL = 50pF
RL = 500Ω
MIN TYP MAX MIN
MAX
MIN
MAX
3.5 5.6 7.0
4.0 6.1 8.0
3.5
4.0
8.0
9.0
3.0
3.5
8.5
9.0
3.5 6.4 7.0
3.0 5.3 7.0
3.5
3.0
8.0
7.5
3.0
3.0
8.0
7.5
4.0 6.2 8.0
3.5 5.6 7.5
4.0
3.5
9.0
8.5
4.0
3.5
9.5
8.5
UNIT
ns
ns
ns
AC WAVEFORMS
For all waveforms, VM = 1.5V
An, E2
Qn
VM
tPHL
VM
VM
tPLH
VM
An, E0, E1
Qn
VM
tPHL
VM
VM
tPLH
VM
SF00179
Waveform 1. Propagation Delay for Inverting Outputs
SF00180
Waveform 2. Propagation Delay for Non-Inverting Outputs
TEST CIRCUIT AND WAVEFORMS
PULSE
GENERATOR
VIN
VCC
VOUT
D.U.T.
NEGATIVE
PULSE
90%
tw
VM
10%
tTHL (tf )
VM
10%
tTLH (tr )
90%
AMP (V)
0V
RT CL RL
Test Circuit for Totem-Pole Outputs
POSITIVE
PULSE
10%
tTLH (tr )
90%
VM
tw
tTHL (tf )
90%
VM
AMP (V)
10%
0V
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
family
74F
INPUT PULSE REQUIREMENTS
amplitude VM rep. rate
tw tTLH
3.0V 1.5V 1MHz 500ns 2.5ns
tTHL
2.5ns
SF00006
February 14, 1991
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet 74F138.PDF ] | |
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