3
Absolute Maximum Ratings
Thermal Information
DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V
DC Input Diode Current, IIK
For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Source or Sink Current per Output Pin, IO
For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA
DC VCC or Ground Current, ICC or IGND . . . . . . . . . . . . . . . . . .±50mA
Operating Conditions
Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . -55
oC to 125oC
Supply Voltage Range, VCC
HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V
HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC
Input Rise and Fall Time
2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max)
4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max)
6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max)
Thermal Resistance (Typical, Note 1)
θJA (oC/W)
E (PDIP) Package . . . . . . . . . . . . . . . . . . . . . . . . . .
80
M (SOIC) Package. . . . . . . . . . . . . . . . . . . . . . . . . .
86
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC
(SOIC - Lead Tips Only)
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specication is not implied.
NOTE:
1. The package thermal impedance is calculated in accordance with JESD 51-7.
DC Electrical Specications
PARAMETER
SYMBOL
TEST
CONDITIONS
VCC (V)
25oC
-40oC TO 85oC
-55oC TO 125oC
UNITS
VI (V)
IO (mA)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HC TYPES
High Level Input
Voltage
VIH
-
2
1.5
-
1.5
-
1.5
-
V
4.5
3.15
-
3.15
-
3.15
-
V
6
4.2
-
4.2
-
4.2
-
V
Low Level Input
Voltage
VIL
-
2
-
0.5
-
0.5
-
0.5
V
4.5
-
1.35
-
1.35
-
1.35
V
6
-
1.8
-
1.8
-
1.8
V
High Level Output
Voltage
CMOS Loads
VOH
VIH or
VIL
-0.02
2
1.9
-
1.9
-
1.9
-
V
-0.02
4.5
4.4
-
4.4
-
4.4
-
V
-0.02
6
5.9
-
5.9
-
5.9
-
V
High Level Output
Voltage
TTL Loads
--
-
----
V
-4
4.5
3.98
-
3.84
-
3.7
-
V
-5.2
6
5.48
-
5.34
-
5.2
-
V
Low Level Output
Voltage
CMOS Loads
VOL
VIH or
VIL
0.02
2
-
0.1
-
0.1
-
0.1
V
0.02
4.5
-
0.1
-
0.1
-
0.1
V
0.02
6
-
0.1
-
0.1
-
0.1
V
Low Level Output
Voltage
TTL Loads
--
-
----
V
4
4.5
-
0.26
-
0.33
-
0.4
V
5.2
6
-
0.26
-
0.33
-
0.4
V
Input Leakage
Current
II
VCC or
GND
-6
-
±0.1
-
±1-
±1
A
CD54HC21, CD74HC21, CD74HCT21