MC74HCT273A
Octal D Flip-Flop with
Common Clock and Reset
with LSTTL-Compatible
Inputs
MC74HCT273A
MAXIMUM RATINGS
Symbol Parameter Value Unit
This device contains protection
circuitry to guard against damage
V DC Supply Voltage (Referenced to GND) 0.5 to +7.0 V
CC
due to high static voltages or electric
V DC Input Voltage (Referenced to GND) 0.5 to V + 0.5 V fields. However, precautions must
in CC
be taken to avoid applications of any
V DC Output Voltage (Referenced to GND) 0.5 to V + 0.5 V
out CC
voltage higher than maximum rated
I DC Input Current, per Pin 20 mA voltages to this highimpedance cir-
in
cuit. For proper operation, V and
in
I DC Output Current, per Pin 25 mA
out
V should be constrained to the
out
range GND (V or V ) V .
I DC Supply Current, V and GND Pins 50 mA
in out CC
CC CC
Unused inputs must always be
P Power Dissipation in Still Air SOIC Package 500 mW
D
tied to an appropriate logic voltage
level (e.g., either GND or V ).
T Storage Temperature 65 to + 150 C CC
stg
Unused outputs must be left open.
T Lead Temperature, 1 mm from Case for 10 Seconds 260 C
L
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of
these limits are exceeded, device functionality should not be assumed, damage may occur and
reliability may be affected.
Derating: SOIC Package: 7 mW/C from 65 to 125C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Max Unit
V DC Supply Voltage (Referenced to GND) 4.5 5.5 V
CC
V , V DC Input Voltage, Output Voltage (Referenced to GND) 0 V V
in out CC
T Operating Temperature, All Package Types 55 +125 C
A
t , t Input Rise and Fall Time (Figure 1) 0 500 ns
r f
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)
Guaranteed Limit
V 55 to
CC
V 25C 85C 125C
Symbol Parameter Test Conditions Unit
V Minimum HighLevel Input V = 0.1 V or V 0.1 V 4.5 2.0 2.0 2.0 V
IH out CC
Voltage |I | 20 A 5.5 2.0 2.0 2.0
out
V Maximum LowLevel Input V = 0.1 V or V 0.1 V 4.5 0.8 0.8 0.8 V
IL out CC
Voltage |I | 20 A 5.5 0.8 0.8 0.8
out
V Minimum HighLevel Output V = V or V 4.5 4.4 4.4 4.4 V
OH in IH IL
Voltage |I | 20 A 5.5 5.4 5.4 5.4
out
V = V or V
in IH IL
|I | 4.0 mA 4.5 3.98 3.84 3.7
out
V Maximum LowLevel Output V = V or V 4.5 0.1 0.1 0.1 V
OL in IH IL
Voltage |I | 20 A 5.5 0.1 0.1 0.1
out
V = V or V
in IH IL
|I | 4.0 mA 4.5 0.26 0.33 0.4
out
I Maximum Input Leakage V = V or GND 5.5 0.1 1.0 1.0 A
in in CC
Current
I Maximum Quiescent Supply V = V or GND 5.5 4.0 40 160 A
CC in CC
Current (per Package) I = 0 A
out
I Additional Quiescent Supply V = 2.4 V, Any One Input
CC in 55C 25C to 125C
Current V = V or GND, Other Inputs
in CC
l = 0 A
2.9 2.4
out 5.5 mA