ADG508FBRN

The ADG508FBRN is a CMOS analog multiplexer from Analog Devices, featuring eight single channels with fault protection. This device is designed to protect both the multiplexer and the signal source in the event of an overvoltage or power loss. It can withstand continuous overvoltage inputs ranging from -40 V to +55 V.

Key electrical specifications include a typical on-resistance of 270 Ω, fast switching times with a maximum turn-on time of 230 ns and a maximum turn-off time of 130 ns, and low power dissipation of 3.3 mW maximum. The multiplexer is latch-up proof and features break-before-make construction. Its inputs are TTL and CMOS compatible.

During fault conditions, such as when power supplies are turned off, all channels are switched off, and only a few nanoamperes of leakage current flow. This ensures robust operation in demanding applications. The ADG508F switches one of eight inputs to a common output, controlled by 3-bit binary address lines (A0, A1, A2), with an enable (EN) input to disable the device.

This fault-protected analog multiplexer is suitable for existing multiplexer applications, both fault-protected and non-fault-protected, as well as new designs requiring robust multiplexer functions.