SN75423, SN75424

HIGH-VOLTAGE HIGH-CURRENT

DARLINGTON TRANSISTOR ARRAYS

SLDS115 – FEBRUARY 1998

1

POST OFFICE BOX 655303

Output)

Logic

description

The SN75423 and SN75424 are monolithic high-voltage, high-current Darlington transistor arrays. Each

consists of eight npn Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for

switching inductive loads. The collector-current rating of each Darlington pair is 500 mA. The Darlington pairs

can be paralleled for higher current capability. Applications include relay drivers, hammer drivers, lamp drivers,

display drivers (LED and gas discharge), line drivers, and logic buffers.

The SN75423 has a 2700-

Ω series base resistor for each Darlington pair for operation directly with TTL or 5-V

CMOS. The SN75424 has a 10.5-k

Ω series base resistor to allow operation directly with CMOS or PMOS that

use supply voltages of 6 to 15 V.

The SN75423 and SN75424 are designed for operation from 0

_C to 85_C.

7C

6C

5C

4C

3C

2C

1C

COM

7

6

5

4

3

2

1

7B

6B

5B

4B

3B

2B

1B

12

13

14

15

16

17

18

10

CLAMP

8C

8

8B

11

† This symbol is in accordance with ANSI/IEEE

Std 91-1984 and IEC Publication 617-12.

logic diagram (positive logic)

7B

6B

5B

4B

3B

2B

1B

7C

6C

5C

4C

3C

2C

1C

COM

7

6

5

4

3

2

1

12

13

14

15

16

17

18

10

8B

8C

811

GND

E

9

Copyright

© 1998, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

N PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

9

18

17

16

15

14

13

12

11

10

1B

2B

3B

4B

5B

6B

7B

8B

GND

1C

2C

3C

4C

5C

6C

7C

8C

COM