HT18 Просмотр технического описания (PDF) - Supertex Inc

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Компоненты Описание

производитель

HT18

Electronic Telephone Line Switch

Supertex Inc 

HT18/HT19

Pin Description

Pin Name Description

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

2

HKS

Hookswitch input. Connect HKS to TPG to turn on the hook switch. Internally pulled low with a high value

resistor.

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

4 NC No Connect. Open Circuit. No internal connections to the device.

5 LS Line switch input. Input logic high turns on the hook switch. Internally pulled low with a high value resistor.

6

DP

For HT18. Dial pulse input. Input logic high turns off the hook switch. Used for pulse dialing. Internally

pulled low with a high value resistor.

6

DP

For HT19. Dial pulse input. Input logic low turns off the hook switch. Used for pulse dialing. Internally

pulled high with a high value resistor.

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

8

TP

Positive output side of a telephone line. Zener protection to prevent this output from rising above 18V is

required.

8-Lead SOIC (Narrow Body) LG Package Outline

4.90 ± 0.10

8

6.00 ± 0.20

3.90 ± 0.10

Note 2

1

Top View

1.75 MAX

1.25 MIN

5° - 15°

(4 PLCS)

0.17 - 0.25

45°

0.25 - 0.50

Note 2

0.10 - 0.25

1.27BSC

0.31 - 0.51

Side View

0.40 - 1.27

0° - 8°

End View

Notes:

1. All dimensions in millimeters. Angles in degrees.

2. If the corner is not chamfered, then a Pin 1 identifier

must be located within the area indicated.

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline

information go to http://www.supertex.com/packaging.html.)

Doc.# DSFP-HT18_HT19

A111006

4

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