This is an introduction to the MM74C908 and MM74C918, two dual high voltage drivers produced by National Semiconductor Corporation, which can work in the input voltage range of 3V to 18V, have high noise immunity, low output“ON” resistance, high voltage and high current characteristics.
The document describes the MM74C908 and MM74C918 as general purpose dual high voltage CMOS drivers. Each device consists of two NAND gates driving an emitter follower Darlington output, capable of sourcing a minimum of 250 mA at specific conditions and withstanding up to 30V in the OFF state.
| Supply Voltage Range | 3V to 18V |
|---|---|
| Maximum Output Voltage (OFF) | 30V |
| Minimum Source Current | 250 mA |
| Operating Temperature Range | -40°C to +85°C |
The outputs can withstand a maximum of 30V across the device in the OFF state.
The drivers are capable of sourcing a minimum of 250 mA at VOUT = VCC - 3V and Tj = 65°C.