Product Summary

The MAX3085 high-speed transceiver for RS-485/RS-422 communication contains one driver and one receiver. The MAX3085 features fail-safe circuitry, which guarantees a logic-high receiver output when the receiver input is open or shorted. The MAX3085 features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 115kbps. The MAX3085 offers higher driver output slew-rate limits, allowing transmit speeds up to 500kbps. The applications of MAX3085 are RS-422/RS-485 Communications, Level Translators, Transceivers for EMI-Sensitive Applications, Industrial-Control Local Area Networks.

Parametrics

MAX3085 absolute maximum ratings: (1)Supply Voltage (VCC) +7V; (2)Control Input Voltage (RE, DE) -0.3V to (VCC + 0.3V); (3)Special Input Voltage (H/F, SRL, TXP, RXP) -0.3V to (VCC + 0.3V); (4)Driver Input Voltage (DI) -0.3V to (VCC + 0.3V); (5)Driver Output Voltage (A, B, Y, Z) ±13V; (6)Receiver Input Voltage (A, B) ±13V; (7)Receiver Input Voltage, Full Duplex (A, B) ±25V; (8)Receiver Output Voltage (RO) -0.3V to (VCC + 0.3V).

Features

MAX3085 features: (1)True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility; (2)Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission; (3)1nA Low-Current Shutdown Mode; (4)Pin-Selectable Full/Half-Duplex Operation; (5)Phase Controls to Correct for Twisted-Pair Reversal; (6)Allow Up to 256 Transceivers on the Bus.

Diagrams

MAX3085 circuit diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
MAX3085CPA
MAX3085CPA

Maxim Integrated Products

RS-422/RS-485 Interface IC

Data Sheet

Negotiable 
MAX3085CPA+
MAX3085CPA+

Maxim Integrated Products

RS-422/RS-485 Interface IC Fail-Safe 10Mbps RS-485/RS-422 Tcvr

Data Sheet

0-1: $2.09
1-25: $1.40
25-50: $1.26
50-100: $1.01
MAX3085CSA
MAX3085CSA

Maxim Integrated Products

RS-422/RS-485 Interface IC

Data Sheet

Negotiable 
MAX3085CSA+
MAX3085CSA+

Maxim Integrated Products

RS-422/RS-485 Interface IC Fail-Safe 10Mbps RS-485/RS-422 Tcvr

Data Sheet

0-1: $2.08
1-25: $1.40
25-50: $1.01
50-100: $1.00
MAX3085CSA+T
MAX3085CSA+T

Maxim Integrated Products

RS-422/RS-485 Interface IC Fail-Safe 10Mbps RS-485/RS-422 Tcvr

Data Sheet

0-2080: $0.89
2080-2500: $0.89
MAX3085CSA-T
MAX3085CSA-T

Maxim Integrated Products

RS-422/RS-485 Interface IC

Data Sheet

Negotiable 
MAX3085E
MAX3085E

Other


Data Sheet

Negotiable 
MAX3085ECPA
MAX3085ECPA

Maxim Integrated Products

RS-422/RS-485 Interface IC

Data Sheet

Negotiable