Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Bulk,Tube |
| ProductStatus | Obsolete |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| NumberofDrivers/Receivers | 1/1 |
| Duplex | Full |
| ReceiverHysteresis | 70 mV |
| DataRate | 2.5Mbps |
| Voltage-Supply | 4.75V ~ 5.25V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Tổng quan
Description
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.
Pinout
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
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.
Package
MAX490EESA comes in an 8-pin SOIC (SOP-8) package; it’s the RoHS lead-free variant.
