MC74AC273, MC74ACT273

http://onsemi.com

2

Figure 2. Logic Symbol

Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7

D0 D1 D2 D3 D4 D5 D6 D7

CP

MR

MODE SELECT-FUNCTION TABLE

Operating Mode

Inputs

Outputs

Operating Mode

MR

CP

Dn

Qn

Reset (Clear)

L

X

X

L

Load

′1′

H

H

H

Load

′0′

H

L

L

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

= LOW-to-HIGH Clock Transition

Figure 3. Logic Diagram

D0

D1

D2

D3

D4

D5

D6

D7

O0

O1

O2

O3

O4

O5

O6

O7

DQ

CP

RD

DQ

CP

RD

DQ

CP

RD

DQ

CP

RD

DQ

CP

RD

DQ

CP

RD

DQ

CP

RD

DQ

CP

RD

CP

MR

NOTE:

That this diagram is provided only for the understanding of logic operations

and should not be used to estimate propagation delays.

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 Sink/Source Current, per Pin

±50

mA

ICC

DC VCC or GND Current per Output Pin

±50

mA

Tstg

Storage Temperature

–65 to +150

°C

*Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the

Recommended Operating Conditions.