FEATURES
All switches off with power supply off Analog output of on channel clamped within power supplies if an overvoltage occurs Latch-up proof construction Low on resistance (270 Ω typical) Fast switching times tON: 230 ns maximum tOFF: 130 ns maximum Low power dissipation (3.3 mW maximum) Fault and overvoltage protection (−40 V to +55 V) Break-before-make construction TTL and CMOS compatible inputs APPLICATIONS
Existing multiplexer applications (both fault-protected and nonfault-protected) New designs requiring multiplexer functions GENERAL DESCRIPTION
The ADG508F and ADG509F are CMOS analog multiplexers, with the ADG508F comprising eight single channels and These multiplexers provide fault protection. Using a series n-channel, p-channel, n-channel MOSFET structure, both device and signal source protection is provided in the event of an overvoltage or power loss. During fault conditions with power supplies off, the multiplexer input (or output) appears as an open circuit and only a few nanoamperes of leakage current will flow.
Analog Devices
