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Product Detailed Parameters
- Description：IC TRANSCEIVER HALF 1/1 8SOIC
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Series：-
- Type：Transceiver
- Protocol：RS422, RS485
- Number of Drivers/Receivers：1月1日
- Duplex：Half
- Data Rate：20Mbps
- Voltage - Supply：3V ~ 3.6V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Receiver Hysteresis：10 mV
- Grade：-
- Qualification：-
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Overview
The MAX3485AEASA+ is a half-duplex RS-485/RS-422 transceiver operating from a single 3.3V supply (3.0V to 3.6V). It supports data rates up to 20Mbps with driver propagation delays of 30ns and receiver delays of 35ns. The device features ±20kV HBM, ±15kV air-gap, and ±8kV contact ESD protection on A/B pins. It includes a fail-safe receiver, hot-swap capability, and operates within -40°C to +125°C. Supply current is 1.9mA active and 10µA in shutdown. Packaged in an 8-pin SO.
Feature Summary
- Integrated ±20kV ESD protection for robust operation in noisy environments
- Hot-swap capability prevents false transitions during power-up or insertion
- Fail-safe receiver ensures logic-high output when inputs are open or shorted
Applications
- Industrial-control local area networks
- Transceivers for EMI-sensitive applications
- Telecommunications systems
Procurement Notes
Verify the component against official Analog Devices datasheets to confirm pinout compatibility and electrical specifications. Ensure the package type matches the design requirements. Cross-reference the manufacturer part number to avoid counterfeit components. Check RoHS compliance status if required by specific project standards.
Selection Notes
Select this component for applications requiring high-speed data transmission up to 20Mbps over long cable runs. It is suitable for harsh industrial environments due to its extended temperature range and enhanced ESD protection. Consider the 1-unit load impedance which limits bus capacity to 32 devices compared to higher-capacity variants.
Part Context
This device belongs to the MAX3483AE family of low-power RS-485/RS-422 transceivers. It shares architectural similarities with the MAX3483AE and MAX3488AE but offers significantly higher data rates. The family provides various options for duplex modes and bus loading capabilities.
Replacement Considerations
MAX3485ECSA+
FAQ
What is the maximum data rate supported by the MAX3485AEASA+?
The MAX3485AEASA+ supports a maximum data rate of 20Mbps.
How does the fail-safe feature work?
The fail-safe receiver guarantees a logic-high output at RO when the differential input voltage (VA - VB) is greater than or equal to -10mV, covering conditions where inputs are open, shorted, or connected to a terminated line with all drivers disabled.
What is the purpose of the hot-swap capability?
Hot-swap capability eliminates false transitions on the bus during power-up or hot insertion by holding DE low and RE high via internal circuitry until the power supply stabilizes.
