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DS3680 - QUAD TELEPHONE RELAY DRIVER

General Description

The DS3680 telephone relay driver is a monolithic integrated circuit designed to interface

48-V relay systems to TTL or other systems in telephone applications.

52-V battery power.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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• Designed for – 52-V Battery Operation • 50-mA Output Current Capability • Input Compatible With TTL and CMOS • High Common-Mode Input Voltage Range • Very Low Input Current • Fail-Safe Disconnect Feature • Built-in Output Clamp Diode • Direct Replacement for National DS3680 and Fairchild µA3680 description The DS3680 telephone relay driver is a monolithic integrated circuit designed to interface – 48-V relay systems to TTL or other systems in telephone applications. It is capable of sourcing up to 50 mA from standard – 52-V battery power. To reduce the effects of noise and IR drop between logic ground and battery ground, these drivers are designed to operate with a common-mode input range of ± 20 V referenced to battery ground.