MAX490EESA

MAX490EESA is a Maxim Integrated (now Analog Devices) analog switch/multiplexer IC. It is designed to route analog or mixed-signal signals on a single supply with low on-resistance and low leakage, making it suitable for signal-gating, multiplexing, and routing in portable or battery-powered systems. The device typically comes in a compact 8-pin package and offers features such as low Ron, low leakage, and fast switching, suitable for front-end instrumentation, audio paths, sensor arrays, and data-acquisition circuits. The EESA suffix denotes a specific package/lead-frame variant (and RoHS compliance); the exact topology (number of switches, SPST/SPDT configuration) varies by variant. For precise specs—supply voltage range, Ron, leakage, breakdown voltage, channel count—consult the current MAX490EESA datasheet on the Analog Devices site. If you have a schematic, I can map which variant fits best.

8 pins (SOIC-8). Function: an RS-485/RS-422 differential transceiver (half‑duplex) with DI (Driver In), RO (Receiver Out), DE (Driver Enable), /RE (Receiver Enable, active low), A and B (bus), VCC and GND.

Manufacturer: Analog Devices, Inc. (ADI). The MAX490EESA was originally from Maxim Integrated, a semiconductor company that designed and manufactured analog and mixed-signal integrated circuits. Maxim was acquired by Analog Devices in 2020, and the MAX series is now under ADI.

MAX490EESA comes in an 8-pin SOIC (SOP-8) package; it’s the RoHS lead-free variant.