Samsung Wingo S-2450, Service Manual, Page: 38 / 58

10-2 Samsung Electronics
IC Internal Diagram
Absolute Maximum Ratings
(Notes 1 @ 2)
If Military.Aerospace specified devices are required0
please contact the National Semiconductor Sales
Office.Distributors for availability and specifications1
Supply Voltage (V
CC
)
b
0(5 to
a
7(0V
DC Input Voltage (V
IN
)
b
1(5 to V
CC
a
1(5V
DC Output Voltage (V
OUT
)
b
0(5 to V
CC
a
0(5V
Clamp Diode Current (I
IK
* I
OK
)
g
20 mA
DC Output Current* per pin (I
OUT
)
g
35 mA
DC V
CC
or GND Current* per pin (I
CC
)
g
70 mA
Storage Temperature Range (T
STG
)
b
65 C to
a
150 C
Power Dissipation (P
D
)
(Note 3) 600 mW
S(O( Package only 500 mW
Lead Temperature (T
L
)
(Soldering 10 seconds) 260 C
OperatingConditions
Min Max Units
Supply Voltage (V
CC
) 4(5 5(5 V
DC Input or Output Voltage 0 V
CC
V
(V
IN
* V
OUT
)
Operating Temp( Range (T
A
)
MM74HCT
b
40
a
85 C
Input Rise or Fall Times
(t
r
* t
f
) 500 ns
DC Electrical Characteristics
(V
CC
e
5V
g
10%* unless otherwise specified()
T
A
e
25 C
74HCT
T
A
e
125 C
Symbol Parameter Conditions
T
A
eb
40 to 85 C
Units
Typ Guaranteed Limits
V
IH
Minimum High Level 2(0 2(0 2(0 V
Input Voltage
V
IL
Maximum Low Level 0(8 0(8 0(8 V
Input Voltage
V
OH
Minimum High Level V
IN
e
V
IH
or V
IL
Output Voltage
l
I
OUT
l
e
20
m
A V
CC
V
CC
b
0(1 V
CC
b
0(1 V
CC
b
0(1 V
l
I
OUT
l
e
6(0 mA* V
CC
e
4(5V 4(2 3(98 3(84 3(7 V
l
I
OUT
l
e
7(2 mA* V
CC
e
5(5V 5(2 4(98 4(84 4(7 V
V
OL
Maximum Low Level V
IN
e
V
IH
or V
IL
Voltage
l
I
OUT
l
e
20
m
A 0 0(1 0(1 0(1 V
l
I
OUT
l
e
6(0 mA* V
CC
e
4(5V 0(2 0(26 0(33 0(4 V
l
I
OUT
l
e
7(2 mA* V
CC
e
5(5V 0(2 0(26 0(33 0(4 V
I
IN
Maximum Input V
IN
e
V
CC
or GND*
g
0(1
g
1(0
g
1(0
m
A
Current V
IH
or V
IL
* Pin 1 or 19
I
OZ
Maximum TRI-STATE V
OUT
e
V
CC
or GND
g
0(5
g
5(0
g
10
m
A
Output Leakage G
e
V
IH
Current
I
CC
Maximum Quiescent V
IN
e
V
CC
or GND 8 80 160
m
A
Supply Current I
OUT
e
0
m
A
V
IN
e
2(4V or 0(5V (Note 4) 0(6 1(0 1(3 1(5 mA
Note 16 Absolute Maximum Ratings are those values beyond which damage to the device may occur(
Note 26 Unless otherwise specified all voltages are referenced to ground(
Note 36 Power Dissipation temperature derating E plastic ‘‘N’’ package9
b
12 mW C from 65 C to 85 C(
Note 46 Measured per input( All other inputs at V
CC
or ground(