| Drivers per package | 4 |
| Switching voltage (Max) (V) | 60 |
| Output voltage (Max) (V) | 60 |
| Peak output current (mA) | 100 |
| Delay time (Typ) (ns) | 1000 |
| Input compatibility | CMOS, TTL |
| Vol @ lowest spec current (Typ) (mV) | 900 |
| Iout/ch (Max) (mA) | 100 |
| Iout_off (Typ) (uA) | 100 |
| Rating | Catalog |
- 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 uA3680
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.
