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DS3680D Datasheet(PDF) 1 Page - Texas Instruments |
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DS3680D Datasheet(HTML) 1 Page - Texas Instruments |
1 / 10 page DS3680 QUAD TELEPHONE RELAY DRIVER SLRS014C – MARCH 1986 – REVISED SEPTEMBER 1995 Copyright © 1995, Texas Instruments Incorporated 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 • 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. The common-mode input voltages for the four drivers can be different, so a wide range of input elements can be accommodated. The high-impedance inputs are compatible with positive TTL and CMOS levels or negative logic levels. A clamp network is included in the driver outputs to limit high-voltage transients generated by the relay coil during switching. The complementary inputs ensure that the driver output is off as a fail-safe condition when either output is open. The DS3680 is characterized for operation from 0 °C to 70°C. IN + IN – 15 k Ω OUT BAT GND BAT NEG schematic diagram (each driver) 1 2 3 4 5 6 7 14 13 12 11 10 9 8 1 IN + 1 IN – 2 IN – 2 IN + 3 IN + 3 IN – 4 IN – BAT GND 1 OUT 2 OUT 3 OUT 4 OUT BAT NEG 4 IN + D OR N PACKAGE (TOP VIEW) symbol (each driver) BAT GND + – OUT BAT NEG IN + IN – All resistor values shown are nominal. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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