4

HT0638

1235 Bordeaux Drive, Sunnyvale, CA 94089

TEL: (408) 744-0100 • FAX: (408) 222-4895

www.supertex.com

08/23/02

©2002 Supertex Inc. All rights reserved. Unauthorized use or reproduction prohibited.

Pin Description

TPG

Positive input side of a telephone line, typically Tip side.

TP

Positive output side of a telephone line.

HKS

Hookswitch input. Connect HKS to TPG to turn on the electronic switch. Internally pulled low.

LS1

Line switch 1 input. Positive input turns on the electronic switch. Internally pulled low.

LS2

Line switch 2 input. Positive input turns on the electronic switch. Internally pulled low.

DP

Dial pulse input. A low input turns off the electronic switch. Use for pulse dialing. Internally pulled high.

CS

Current sense input. An external resistor connected between CS and TP sets the current limit. Short C

current limiting is not used.

GND

Device ground. Negative side of a telephone line, typically Ring side.

1

2

3

4

8

7

6

5

Pin Configuration

TPG

TP

HKS

CS

GND

DP

LS2

LS1

Note: See Package Outline section for dimensions.

top view

SO-8