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HT19

EOL

Status: End of Life

Features:

  • 350V breakdown voltage
  • 18Ω maximum switch resistance
  • Current limiting protection
  • Operates at 2.3V input
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

HT19LG is an electronic line switch circuit that replaces the mechanical hook switch contact or a discrete hook switch in a telephone handset or modem. It switches the positive side of the telephone line using control inputs that are referenced to the negative side of the line. In its off state, it can withstand 350V on the positive input. In its on state, it has a maximum series resistance of 18?. The device provides current limiting determined by an external resistor. There are three control inputs. The HKS pin turns on the hook switch when connected to the TPG pin. This can be accomplished by using a mechanical switch which closes when the handset is physically off-hook. The LS pin allows a logic signal to turn on the hook switch. The dial pulse, Pin 6, is used to turn the hook switch off for pulse dialing. The dial pulse (DP) is active low.

Additional Features
  • 350V breakdown voltage
  • 18Ω maximum switch resistance
  • Current limiting protection
  • Operates at 2.3V input
Parametrics
Name
Value
Switch Resistance (Ω)
18
Max Breakdown (V)
350
Package
SOIC-8

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
HT19LG-G
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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