Product Summary

The MAX3485CSA is a 3.3V, low-power transceiver for RS-485 and RS-422 communication. Each part contains one driver and one receiver. The MAX3485CSA features slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The MAX3485CSA 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. The MAX3485CSA features full-duplex communication, while the device is designed for half-duplex communication.

Parametrics

MAX3485CSA 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)Continuous Power Dissipation (TA = +70℃):471mW; (8)Operating Temperature Ranges:0℃ to +70℃; (9)Storage Temperature Range:-65℃ to +160℃; (10)Lead Temperature (soldering, 10sec):+300℃.

Features

MAX3485CSA 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

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
MAX3485CSA
MAX3485CSA

Maxim Integrated Products

RS-422/RS-485 Interface IC

Data Sheet

Negotiable 
MAX3485CSA+
MAX3485CSA+

Maxim Integrated Products

RS-422/RS-485 Interface IC 3.3V 10Mbps Transceiver

Data Sheet

0-1: $2.67
1-25: $1.78
25-50: $1.28
50-250: $1.26
MAX3485CSA-T
MAX3485CSA-T

Maxim Integrated Products

RS-422/RS-485 Interface IC

Data Sheet

Negotiable 
MAX3485CSA+T
MAX3485CSA+T

Maxim Integrated Products

RS-422/RS-485 Interface IC 3.3V 10Mbps Transceiver

Data Sheet

0-2080: $1.12
2080-2500: $1.12