4 Pin Configuration and Functions

1

2

3

7

4

5

6

14

13

12

8

11

18

17

GND

OE3

B3

Y3

V

CC

15

16

A1

B1

OE1

B2

Y2

C3

A3

D3

A2

OE2

10

9

D2

C2

D1

C1

20

19

Y1

Figure 4-1. PW or DGS Package, 20-Pin TSSOP or

VSSOP (Top View)

V

CC

C3

GND

A1

B1

OE2

A2

B2

Y2

D2

C2

OE1

Y1

D1

C1

OE3

A3

B3

Y3

D3

1

20

10

11

2

3

4

5

6

7

8

9

12

13

14

15

16

17

18

19

PAD

Figure 4-2. RKS Package, 20-Pin VQFN

(Transparent Top View)

Table 4-1. Pin Functions

PIN

TYPE(1)

DESCRIPTION

NAME

NO.

OE1

1

I

Output enable input for Channel 1, active-low

A1

2

I

Channel 1, Input A

B1

3

I

Channel 1, Input B

OE2

4

I

Output enable input for Channel 2, active-low

A2

5

I

Channel 2, Input A

B2

6

I

Channel 2, Input B

Y2

7

O

Channel 2, Output Y

D2

8

I

Channel 2, Input D

C2

9

I

Channel 2, Input C

GND

10

G

Ground

C3

11

I

Channel 3, Input C

D3

12

I

Channel 3, Input D

Y3

13

O

Channel 3, Output Y

B3

14

I

Channel 3, Input B

A3

15

I

Channel 3, Input A

OE3

16

I

Output enable input for Channel 3, active-low

C1

17

I

Channel 1, Input C

D1

18

I

Channel 1, Input D

Y1

19

O

Channel 1, Output Y

VCC

20

P

Positive supply

Thermal Pad(2)

—

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

or supply.

(1)

I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power

(2)

RKS package only.

www.ti.com

SN74AC3G99

SCASE46 – NOVEMBER 2024

Copyright © 2024 Texas Instruments Incorporated

Submit Document Feedback

3

Product Folder Links: SN74AC3G99