74AHCT138
Document number: DS35483 Rev. 2 - 2
4 of 9
www.diodes.com
June 2013
© Diodes Incorporated
74AHCT138
Absolute Maximum Ratings (Note 4) (@T
A
= +25°C, unless otherwise specified.)
Symbol Description Rating Unit
ESD HBM Human Body Model ESD Protection 2 KV
ESD CDM Charged Device Model ESD Protection 1 KV
ESD MM Machine Model ESD Protection 200 V
V
CC
Supply Voltage Range -0.5 to +7.0 V
V
I
Input Voltage Range -0.5 to +7.0 V
V
o
Voltage applied to output in high or low state
-0.3 to V
CC
+0.5
V
I
IK
Input Clamp Current V
I
< -0.5V
-20 mA
I
OK
Output Clamp Current V
O
<-0.5V
-20 mA
I
OK
Output Clamp Current V
O
> V
CC
+ 0.5V
25 mA
I
O
Continuous output current +/- 25 mA
I
CC
Continuous current through V
DD
or GND
75 mA
I
GND
Continuous current through V
DD
or GND
-75 mA
T
J
Operating Junction Temperature -40 to +150 °C
T
STG
Storage Temperature -65 to +150 °C
P
TOT
Total Power Dissipation 500 mW
Notes: 4. Stresses beyond the absolute maximum may result in immediate failure or reduced reliability. These are stress values and device operation should be
within recommend values.
Recommended Operating Conditions (Note 5) (@T
A
= +25°C, unless otherwise specified.)
Symbol Parameter Conditions Min Max Unit
V
CC
Supply Voltage 4.5 5.5 V
V
I
Input Voltage 0 5.5 V
V
O
Output Voltage Active Mode 0
V
CC
V
t/V
Input transition Rise or Fall Rate
V
CC
= 4.5V to 5.5V
20 ns/V
T
A
Operating Free-Air Temperature -40 +125 °C
Note: 5. Unused inputs should be held at V
CC
or Ground.
Electrical Characteristics (@T
A
= +25°C, unless otherwise specified.)
Symbol Parameter Test Conditions
V
CC
T
A
= +25°C T
A
= -40°C to +85°C T
A
= -40°C to +125°C
Unit
Min Typ Max Min Max Min Max
V
IH
High-level Input
Voltage
4.5V to 5.5V 2.0
2.0
2.0
V
V
IL
Low-level input
voltage
4.5V to 5.5V
0.8
0.8
0.8 V
V
OH
High Level
Output Voltage
I
OH
= -50μA
4.5V 4.4 4.5
4.4
4.4
V
I
OH
= -8mA
4.5V 3.94
3.80
3.70
V
OL
Low-level Output
Voltage
I
OL
= 50μA
4.5V
0 0.1
0.1
0.1
V
I
OL
= 8mA
4.5V
0.36
0.44
0.55
I
I
Input Current
V
I
= GND or 5.5V
0V to 5.5V
0.1 ±0.1
± 1
± 2 μA
I
CC
Supply Current
V
I
= GND or V
CC
I
O
= 0
5.5V
4.0
40
80 μA
∆I
CC
Additional
Supply Current
per Input
V
I
= Vcc -2.1V
I
O
= 0
4.5V to 5.5V
1.35
1.5
1.5 mA
C
i
Input
Capacitance
V
i
= V
CC
or GND
5.5V
4 10
10
10 pF
(10 pages)
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