Product Summary

The MAX3485EPA is a 3.3V, low-power transceiver for RS-485 and RS-422 communication. Each part contains one driver and one receiver. The MAX3485EPA transmits at up to 10Mbps. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if both inputs are open circuit. Applications include Low-Power RS-485/RS-422 Transceivers, Telecommunications, Transceivers for EMI-Sensitive Applications and Industrial-Control Local Area Networks.

Parametrics

MAX3485EPA absolute maximum ratings: (1)Supply Voltage (VCC): 7V; (2)Control Input Voltage (RE, DE): -0.3V to 7V; (3)Driver Input Voltage (DI): -0.3V to 7V; (4)Driver Output Voltage (A, B, Y, Z): -7.5V to 12.5V; (5)Receiver Input Voltage (A, B): -7.5V to 12.5V; (6)Receiver Output Voltage (RO): -0.3V to (VCC + 0.3V); (7)Operating Temperature Ranges: -40℃ to +85℃; (8)Storage Temperature Range: -65℃ to +160℃; (9)Lead Temperature (soldering, 10sec): +300℃.

Features

MAX3485EPA features: (1)Operate from a Single 3.3V Supply—No Charge Pump; (2)Interoperable with +5V Logic; (3)8ns Max Skew; (4)2nA Low-Current Shutdown Mode; (5)-7V to +12V Common-Mode Input Voltage Range; (6)Allows up to 32 Transceivers on the Bus; (7)Full-Duplex and Half-Duplex Versions Available; (8)Industry Standard 75176 Pinout; (9)Current-Limiting and Thermal Shutdown for Driver Overload Protection.

Diagrams

MAX3485EPA Pin Configuration and Typical Operating Circuit 

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
MAX3485EPA
MAX3485EPA

Maxim Integrated Products

RS-422/RS-485 Interface IC

Data Sheet

Negotiable 
MAX3485EPA+
MAX3485EPA+

Maxim Integrated Products

RS-422/RS-485 Interface IC

Data Sheet

Negotiable