Datasheet
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
CC
Supply Voltage -0.5 to +7 V
V
I
DC Input Voltage -0.5 to V
CC
+ 0.5 V
V
O
DC Output Voltage -0.5 to V
CC
+ 0.5 V
I
IK
DC Input Diode Current ± 20 mA
I
OK
DC Output Diode Current ± 20 mA
I
O
DC Output Source Sink Current Per Output Pin ± 25 mA
I
CC
or I
GND
DC V
CC
or Ground Current ± 50 mA
P
D
Power Dissipation 500 (*) mW
T
stg
Storage Temperature -65 to +150
o
C
T
L
Lead Temperature (10 sec) 300
o
C
Absolute MaximumRatingsare those values beyond whichdamage tothe device mayoccur. Functional operation under these conditionisnotimplied.
(*) 500 mW: ≅ 65
o
C derate to 300 mW by 10mW/
o
C: 65
o
Cto85
o
C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
CC
Supply Voltage 2 to 6 V
V
I
Input Voltage 0 to V
CC
V
V
O
Output Voltage 0 to V
CC
V
T
op
Operating Temperature: M54HC Series
M74HC Series
-55 to +125
-40 to +85
o
C
o
C
t
r
,t
f
Input Rise and Fall Time (CLR only) V
CC
= 2 V 0 to 1000
ns
V
CC
= 4.5 V 0 to 500
V
CC
= 6 V 0 to 400
C
X
External Capacitor NO LIMITATION (*)
R
X
External Resistor V
CC
≤ 3 V 5K to 1M (*)
Ω
V
CC
>3V 1Kto1M(*)
(*) The maximum allowable values of Cx and Rx are a function ofleakage of capacitor Cx, the leakage of device and leakage due to the board
layout and surface resistance. Susceptibility to externally induced noise may occur for Rx > 1MΩ
M54/M74HC4538
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