MAX3485AEASA+T

Devices in the MAX3483AE family (MAX3483AE/ MAX3485AE/MAX3488AE/MAX3490AE/MAX3491AE) are ±20kV ESD-protected RS-485/422 transceivers, optimized for extended cable runs in noisy environments. All devices operate from a single 3.3V supply. The MAX3483AE and MAX3485AE are half-duplex transceivers. The MAX3488AE, MAX3490AE, and MAX3491AE are full-duplex transceivers. The MAX3483AE/85AE have a 1-unit load receiver input impedance, allowing up to 32 transceivers on the bus. The MAX3488AE/90AE/91AE have a 1/4 -unit load receiver input impedance, allowing up to 128 transceivers on the bus. Each transceiver includes a fail-safe receiver, ensuring that the receiver output (RO) is high when inputs are shorted, open, or connected to a three-state bus. All devices feature enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±20kV HBM ESD, ±15kV Air-Gap ESD and ±8kV Contact ESD in accordance to IEC 61000-4-2. The MAX3483AE, MAX3485AE, MAX3488AE, and MAX3490AE are available in industry standard 8-pin SO package, while the MAX3491AE is available in a 14-pin SO package.

Applications

• Industrial-Control Local Area Networks
• Transceivers for EMI-Sensitive Applications
• Telecommuncations

Key features

• Integrated Protection Increases Robustness
• High ESD Protection: ±20kV HBM ESD per JEDEC JS-001-2012, ±15kV Air Gap per IEC 61000-4-2, ±8kV Contact ESD per IEC 61000-4-2
• Short-Circuit Protected Outputs
• True Fail-Safe Receiver Prevents False Transition on Receiver Input Short or Open Events
• Hot-Swap Capability Eliminates False Transitions During Power-Up or Hot Insertion
• High-Speed Data Rates up to 20Mbps
• Up to -40°C to +125°C Operating Temperature
• Allows Up to 128 Transceivers on the Bus