MC74HCT273A_06 Datasheet, PDF (2/8 Pages) ON Semiconductor – Octal D Flip−Flop with Common Clock and Reset with LSTTL−Compatible Inputs

MC74HCT273A
LOGIC DIAGRAM
DATA
INPUTS
D0 ³
D1 ⁴
D2 ⁷
D3 ⁸
D4 ¹³
D5 ¹⁴
D6 ¹⁷
D7 ¹⁸
CLOCK ¹¹
2 _Q0
5 _Q1
6 _Q2
9 _Q3
12 _Q4
15 _Q5
16 _Q6
19 _Q7
NONINVERTING
OUTPUTS
RESET ¹
PIN 20 = V_CC
PIN 10 = GND
FUNCTION TABLE
Inputs
Reset Clock D
Output
Q
L
X
X
L
H
H
H
H
L
L
H
L
X No Change
H
X No Change
X = Don’t Care
Z = High Impedance
MAXIMUM RATINGS*
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Symbol
Parameter
Value
Unit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{VCC DC Supply Voltage (Referenced to GND)}
– 0.5 to + 7.0
V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Vin DC Input Voltage (Referenced to GND)}
– 0.5 to V_CC + 0.5 V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Vout DC Output Voltage (Referenced to GND)}
– 0.5 to V_CC + 0.5 V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Iin
DC Input Current, per Pin
± 20
mA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Iout DC Output Current, per Pin}
± 25
mA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{ICC DC Supply Current, VCC and GND Pins}
± 50
mA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{PD Power Dissipation in Still Air}
Plastic DIP†
750
mW
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{SOIC Packageâ€} 
500
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Tstg Storage Temperature}
– 65 to + 150
_C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{TL Lead Temperature, 1 mm from Case for 10 Seconds}
_C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ^{(SOIC or Plastic DIP)}
260
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ^{*Maximum Ratings are those values beyond which damage to the device may occur.}
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 high−impedance cir-
cuit. For proper operation, V_in and
V_out should be constrained to the
range GND v (V_in or V_out) v V_CC.
Unused inputs must always be
tied to an appropriate logic voltage
level (e.g., either GND or V_CC).
Unused outputs must be left open.
Functional operation should be restricted to the Recommended Operating Conditions.
†Derating — Plastic DIP: – 10 mW/_C from 65_ to 125_C
SOIC Package: – 7 mW/_C from 65_ to 125_C
For high frequency or heavy load considerations, see Chapter 2 of the ON Semiconductor High−Speed CMOS Data Book (DL129/D).
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min Max Unit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{VCC DC Supply Voltage (Referenced to GND)}
4.5 5.5 V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Vin, Vout DC Input Voltage, Output Voltage (Referenced to GND) 0}
V_CC
V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _TA
Operating Temperature, All Package Types
– 55 + 125 _C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{tr, tf Input Rise and Fall Time(Figure1)}
0 500 ns
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2