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Philips Semiconductors
Product specification
74F138
1-of-8 decoder/demultiplexer
February 14, 1991
4
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free air temperature range.)
SYMBOL
PARAMETER
RATING
UNIT
V
CC
V
IN
I
IN
V
OUT
I
OUT
Supply voltage
–0.5 to +7.0
V
Input voltage
–0.5 to +7.0
V
Input current
–30 to +5
mA
Voltage applied to output in High output state
–0.5 to V
CC
40
V
Current applied to output in Low output state
mA
T
amb
Operating free air temperature range
Operating free-air temperature range
Commercial range
0 to +70
°
C
°
C
°
C
Industrial range
–40 to +85
T
stg
Storage temperature range
–65 to +150
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
MIN
NOM
MAX
V
CC
V
IH
V
IL
I
IK
I
OH
I
OL
Supply voltage
4.5
5.0
5.5
V
High-level input voltage
2.0
V
Low-level input voltage
0.8
V
Input clamp current
–18
mA
High-level output current
–1
mA
Low-level output current
20
mA
T
amb
Operating free-air temperature range
O erating free-air tem erature range
Commercial range
0
+70
°
C
°
C
Industrial range
–40
+85
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
PARAMETER
TEST CONDITIONS
1
LIMITS
UNIT
MIN
TYP
2
MAX
V
OH
High level output voltage
High-level output voltage
V
= MIN, V
= MAX,
CC
V
IH
= MIN
= MAX
I
OH
±
10%V
CC
±
5%V
CC
±
10%V
CC
±
5%V
CC
2.5
V
IL
2.7
3.4
V
V
OL
Low level output voltage
Low-level output voltage
V
= MIN, V
= MAX,
CC
V
IH
= MIN
= MAX
I
OL
0.30
0.50
V
IL
0.30
0.50
V
V
IK
I
I
I
IH
I
IL
I
OS
I
CC
Input clamp voltage
V
CC
= MIN, I
I
= I
IK
V
CC
= MAX, V
I
= 7.0V
V
CC
= MAX, V
I
= 2.7V
V
CC
= MAX, V
I
= 0.5V
V
CC
= MAX
V
CC
= MAX
–0.73
–1.2
V
Input current at maximum input voltage
100
μ
A
μ
A
High-level input current
20
Low-level input current
Short-circuit output current
3
Supply current
4
(total)
–0.6
mA
–60
–150
mA
13
20
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 V
= 5V, T
= 25
°
C.
3. Not more than one output should be shorted at a time. For testing I
, the use of high-speed test apparatus and/or sample-and-hold
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any
sequence of parameter tests, I
tests should be performed last.
4. Measure I
CC
, outputs must be open, V
IN
on all inputs = 4.5V.