MC74VHCT573A

http://onsemi.com

2

Figure 1. Logic Diagram

DATA

INPUTS

D0

D1

D2

D3

D4

D5

D6

D7

LE

OE

11

1

9

8

7

6

5

4

3

219

18

17

16

15

14

13

12

Q0

Q1

Q2

Q3

Q4

Q5

Q6

Q7

NONINVERTING

OUTPUTS

Figure 2. Pin Assignment

D4

D2

D1

D0

OE

GND

D7

D6

D5

D3

5

4

3

2

1

10

9

8

7

6

14

15

16

17

18

19

20

11

12

13

Q3

Q2

Q1

Q0

LE

Q7

Q6

Q5

Q4

MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

DC Supply Voltage

– 0.5 to + 7.0

V

DC Input Voltage

– 0.5 to + 7.0

V

DC Output Voltage

Outputs in 3−State

High or Low State

– 0.5 to + 7.0

V

Input Diode Current

− 20

mA

± 20

mA

DC Output Current, per Pin

± 25

mA

± 75

mA

Power Dissipation in Still Air,

SOIC Package†

TSSOP Package†

500

450

mW

Storage Temperature

– 65 to + 150

_C

Maximum ratings are those values beyond which device damage can occur. Maximum ratings

applied to the device are individual stress limit values (not normal operating conditions) and are

not valid simultaneously. If these limits are exceeded, device functional operation is not implied,

damage may occur and reliability may be affected.

†Derating − SOIC Packages: – 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

DC Supply Voltage

4.5

5.5

V

DC Input Voltage

0

5.5

V

DC Output Voltage

Outputs in 3−State

High or Low State

0

0

5.5

V

Operating Temperature

− 40

+ 85

_C

Input Rise and Fall Time

0

20

ns/V

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-

range GND

Unused inputs must always be

tied to an appropriate logic voltage

Unused outputs must be left open.