N74ALS139N Просмотр технического описания (PDF) - Philips Electronics
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N74ALS139N Datasheet PDF : 8 Pages
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Philips Semiconductors
Dual 1-of-4 decoder/demultiplexer
Product specification
74ALS139
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
PARAMETER
TEST CONDITIONS1
LIMITS
MIN TYP2
MAX
UNIT
VOH High-level output voltage
VCC±10%, VIL = MAX, VIH = MIN, IOH = –0.4mA VCC – 2
V
VOL Low-level output voltage
VCC = MIN, VIL = MAX,
VIH = MIN
IOL = 4mA
IOL = 8mA
0.25 0.40
V
0.35 0.50
V
VIK
Input clamp voltage
VCC = MIN, II = IIK
–0.73 –1.5
V
II
Input current at maximum input voltage VCC = MAX, VI = 7.0V
0.1 mA
IIH
High-level input current
VCC = MAX, VI = 2.7V
20
µA
IIL
Low-level input current
IO
Output current3
VCC = MAX, VI = 0.5V
VCC = MAX, VO = 2.25V
–0.1 mA
-30
–112 mA
ICC
Supply current (total)
VCC = MAX
4.0 7.0 mA
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at VCC = 5V, Tamb = 25°C.
3. The output conditions have been chosen to produce a current that closely approximate one half of the true short-circuit output current, IOS.
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
tPLH
Propagation delay
tPHL
An to Qn
tPLH
Propagation delay
tPHL
En to Qn
TEST CONDITION
Waveform 1, 2
Waveform 2
LIMITS
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
MIN
MAX
3.0
10.0
3.0
12.0
3.0
8.0
3.0
8.0
UNIT
ns
ns
AC WAVEFORMS
For all waveforms, VM = 1.3V.
An
VM
VM
tPHL
tPLH
Qn
VM
VM
An, En
Qn
VM
VM
tPHL
VM
tPLH
VM
SF00133
Waveform 1. Propagation Delay for Inverting Outputs
SF00134
Waveform 2. Propagation Delay for Non-inverting Outputs
1991 Feb 08
4
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