5 Pin Configuration and Functions

1

2

3

7

4

5

6

14

13

12

8

11

18

17

GND

4Q

6Q

7Q

V

CC

15

16

1D

2D

OE

5D

6D

LE

5Q

8Q

4D

3D

10

9

7D

8D

2Q

1Q

3Q

20

19

Figure 5-1. DGS Package

20-Pin VSSOP

Top View

VCC

LE

GND

1D

2D

3D

4D

5D

6D

7D

8D

OE

1Q

2Q

3Q

4Q

5Q

6Q

7Q

8Q

1

20

10

11

2

3

4

5

6

7

8

9

12

13

14

15

16

17

18

19

PAD

Figure 5-2. RKS Package

20-Pin VQFN

Top View

Pin Functions

PIN

I/O

DESCRIPTION

NAME

NO.

OE

1

Input

Output enable for all channels, active low

D1

2

Input

Input for channel 1

D2

3

Input

Input for channel 2

D3

4

Input

Input for channel 3

D4

5

Input

Input for channel 4

D5

6

Input

Input for channel 5

D6

7

Input

Input for channel 6

D7

8

Input

Input for channel 7

D8

9

Input

Input for channel 8

GND

10

—

Ground

LE

11

Input

Latch enable

Q8

12

Output

Output for channel 8

Q7

13

Output

Output for channel 7

Q6

14

Output

Output for channel 6

Q5

15

Output

Output for channel 5

Q4

16

Output

Output for channel 4

Q3

17

Output

Output for channel 3

Q2

18

Output

Output for channel 2

Q1

19

Output

Output for channel 1

VCC

20

—

Postive supply

Thermal Pad

—

The thermal pad can be connect to GND or left floating. Do not connect to any other signal

or supply.

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SN74HCS573

SCLS876A – OCTOBER 2021 – REVISED DECEMBER 2022

Copyright © 2022 Texas Instruments Incorporated

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