74LV139PWDH Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
74LV139PWDH Datasheet PDF : 12 Pages
| |||
Philips Semiconductors
Dual 2-to-4 line decoder/demultiplexer
Product specification
74LV139
AC CHARACTERISTICS
GND = 0V; tr = tf ≤ 2.5ns; CL = 50pF; RL = 1KΩ
SYMBOL
PARAMETER
WAVEFORM
CONDITION
VCC(V)
1.2
tPHL/tPLH
Propagation delay
nAn to Yn
Figures 1, 2
2.0
2.7
3.0 to 3.6
4.5 to 5.5
1.2
tPHL/tPLH
Propagation delay
nE to Yn
Figures 1, 2
2.0
2.7
3.0 to 3.6
4.5 to 5.5
NOTES:
1. Unless otherwise stated, all typical values are measured at Tamb = 25°C
2. Typical values are measured at VCC = 3.3 V.
LIMITS
–40 to +85 °C
MIN TYP1 MAX
70
24
31
18
23
132
18
15
60
20
27
15
20
112
16
13
–40 to +125 °C
MIN MAX
39
29
23
19
34
25
20
16
UNIT
ns
ns
AC WAVEFORMS
VM = 1.5 V at VCC ≥ 2.7 V and ≤ 3.6 V;
VM = 0.5 V × VCC at VCC < 2.7 V and ≥ 4.5 V.
VOL and VOH are the typical output voltage drop that occur with the
output load.
Vl
nAn INPUT
VM
GND
VOH
tPHL
tPLH
nYn OUTPUT
VM
VOL
SV00535
Figure 1. Address input (nAn) to output (nYn)
propagation delays.
Vl
nE INPUT
VM
GND
VOH
tPHL
tPLH
nYn OUTPUT
VM
VOL
SV00536
Figure 2. Enable input (nE) to output (nYn)
propagation delays.
TEST CIRCUIT
Vcc
PULSE
GENERATOR
Vl
RT
D.U.T.
VO
50pF
CL
RL= 1k
Test Circuit for Outputs
DEFINITIONS
RL = Load resistor
CL = Load capacitance includes jig and probe capacitiance
RT = Termination resistance should be equal to ZOUT of pulse generators.
TEST
tPLH/tPHL
VCC
< 2.7V
2.7–3.6V
≥ 4.5 V
VI
VCC
2.7V
VCC
SV00902
Figure 3. Load circuitry for switching times.
1998 Apr 28
6
Share Link: 