The MAX4632CSE+ is a fault protected, high voltage dual SPDT analogue switch in 16 pin NSOIC package. This device is pin compatible with industry standard DG403 device. It upgrades existing devices with fault protected inputs and rail to rail signal handling capabilities. The normally open (NO) and normally closed (NC) terminals are protected from overvoltage faults up to ±25V with ±15V supplies during power-up or power-down. During a fault condition, these terminals become open circuit and only nanoamperes of leakage current flow from source, yet the switch output continues to furnish up to 18mA of the appropriate polarity supply voltage to load. This ensures unambiguous rail to rail outputs when a fault begins and ends. The MAX4632 has two NO/NC SPDT switches. All digital inputs have +0.8V and +2.4V logic thresholds to ensure both TTL and CMOS logic compatibility when using ±15V or single +12V supply. It is used in ATE equipment, data acquisition and redundant/backup systems.
Supply voltage range from 9V to 36V, ±4.5V to ±18V
Operating temperature range from 0°C to 70°C
Power supply sequencing is not required
All switches off with power off
Output clamped to appropriate supply voltage during fault condition (no transition glitch)
Maximum on-resistance of 200 ohm at TA = +25°C (single supply)
Low power consumption of less than 6mW
Maximum on-resistance match between channels is 10 ohm at TA = +25°C (single supply)
Off leakage current of 0.5nA and on-leakage current of 0.5nA at TA = +25°C (single supply)
