• 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 ...

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