MC74HC273A
http://onsemi.com
3
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC
DC Supply Voltage (Referenced to GND)
– 0.5 to + 7.0
V
Vin
DC Input Voltage (Referenced to GND)
– 0.5 to VCC + 0.5
V
Vout
DC Output Voltage (Referenced to GND)
– 0.5 to VCC + 0.5
V
Iin
DC Input Current, per Pin
± 20
mA
Iout
DC Output Current, per Pin
± 25
mA
ICC
DC Supply Current, VCC and GND Pins
± 50
mA
PD
Power Dissipation in Still Air,
Plastic DIP
SOIC Package
TSSOP Package
750
500
450
mW
Tstg
Storage Temperature
– 65 to + 150
°C
TL
Lead Temperature, 1 mm from Case for 10 Seconds
Plastic DIP, SOIC or TSSOP Package
260
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress
ratings only. Functional operation above the Recommended Operating Conditions is not implied.
Extended exposure to stresses above the Recommended Operating Conditions may affect device
reliability.
Derating — Plastic DIP: – 10 mW/°C from 65° to 125°C
SOIC Package: – 7 mW/°C from 65° to 125°C
TSSOP Package: 6.1 mW/°C from 65° to 125°C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Max
Unit
VCC
DC Supply Voltage (Referenced to GND)
2.0
6.0
V
Vin, Vout
DC Input Voltage, Output Voltage (Referenced to GND)
0
VCC
V
TA
Operating Temperature, All Package Types
– 55
+ 125
°C
tr, tf
Input Rise and Fall Time
VCC = 2.0 V
(Figure 1)
VCC = 4.5 V
VCC = 6.0 V
0
1000
500
400
ns
DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)
Guaranteed Limit
Symbol
Parameter
Test Conditions
VCC
V
– 55 to
25°C
v 85°C
v 125°C
Unit
VIH
Minimum HighLevel Input Voltage
Vout = VCC – 0.1 V
|Iout| v 20 mA
2.0
3.0
4.5
6.0
1.5
2.1
3.15
4.2
1.5
2.1
3.15
4.2
1.5
2.1
3.15
4.2
V
VIL
Maximum LowLevel Input Voltage
Vout = 0.1 V
|Iout| v 20 mA
2.0
3.0
4.5
6.0
0.5
0.9
1.35
1.8
0.5
0.9
1.35
1.8
0.5
0.9
1.35
1.8
V
VOH
Minimum HighLevel Output
Voltage
Vin = VIH
|Iout| v 20 mA
2.0
4.5
6.0
1.9
4.4
5.9
1.9
4.4
5.9
1.9
4.4
5.9
V
Vin = VIH
|Iout| v 2.4 mA
|Iout| v 6.0 mA
|Iout| v 7.8 mA
3.0
4.5
6.0
2.48
3.98
5.48
2.34
3.84
5.34
2.2
3.7
5.2
VOL
Maximum LowLevel Output
Voltage
Vin = VIL
|Iout| v 20 mA
2.0
4.5
6.0
0.1
0.1
0.1
V
Vin = VIL
|Iout| v 2.4 mA
|Iout| v 6.0 mA
|Iout| v 7.8 mA
3.0
4.5
6.0
0.26
0.33
0.4
This device contains protection
circuitry to guard against damage
due to high static voltages or electric
fields. However, precautions must
be taken to avoid applications of any
voltage higher than maximum rated
voltages to this highimpedance cir-
cuit. For proper operation, Vin and
Vout should be constrained to the
range GND v (Vin or Vout) v VCC.
Unused inputs must always be
tied to an appropriate logic voltage
level (e.g., either GND or VCC).
Unused outputs must be left open.