M-949-11 查看數據表（PDF） - Clare Inc => IXYS

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产品描述 (功能)

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M-949-11

Line Sense Relay

Clare Inc => IXYS 

Features

• Senses telephone line current from 18 to 125mA

• Includes 1 Form A relay contact

• Maximum closure time 1 ms including bounce

• Achives 63 dB minimum longitudinal balance

• Provides 1500 VDC coil-to-contact isolation

• Improved RFI shielding

• UL Recognized

• Applications include: central office products, PBX

and key systems, rotary dial monitoring devices,

Figure 1 Electrical Configuration

M-949-01

Line Sense Relay

Description

The M-949-01 Line Sense relay is a small PWB-

mount loop current detector with the safety and

reliability features required for FCC Part 68 regulated

telephone applicatoins. When connected to the voice

pair (Tip and Ring of an ordinary telephone line, the

M-949-01 provides a 1 Form A relay closure in

response to current above 20mA flowing hrough the

wires. This closure can be used by control circuitry for

on-hook’off-hook monitoring, switchhook flash

detection, and rotary dial pulse counting. Simple in

design and rugged in construction, the M-949-01 is

ideally suited for use with the Teltone M-959, M-8870,

M-8880, M-8888, and other loop current controlled

telephone dialing recievers.

Ordering Information

Part #

M-949-11

Description

Line Sense Relay

Figure 2 Typical Application: Dialed Digit Monitor

DS-M-949-01-R1.0

www.clare.com

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