Product Summary

The MAX485ECSA+T is a low-power transceiver for RS-485 and RS-422 communication. Each part contains one driver and one receiver. The MAX485ECSA+T features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free data transmission up to 250kbps. The driver slew rates of the MAX485ECSA+T is not limited, allowing them to transmit up to 2.5Mbps. These transceivers draw between 120μA and 500μA of supply current when unloaded or fully loaded with disabled drivers. Additionally, the MAX485ECSA+T has a low current shutdown mode in which they consume only 0.1μA. All parts operate from a single 5V supply. Driver is 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 the input is open circuit. The MAX485CSA+T features quarter-unit-load receiver input impedance, allowing up to 128 MAX485ECSA+T transceivers on the bus. Full-duplex communications are obtained using the MAX485ECSA+T, while the MAX485ECSA+TT is designed for half duplex applications.

Parametrics

MAX485ECSA+T absolute maximum ratings: (1)Supply Voltage (VCC): 12V; (2)Control Input Voltage (RE, DE): -0.5V to (VCC + 0.5V); (3)Driver Input Voltage (DI): -0.5V to (VCC + 0.5V); (4)Driver Output Voltage (A, B): -8V to +12.5V; (5)Receiver Input Voltage (A, B): -8V to +12.5V; (6)Receiver Output Voltage (RO): -0.5V to (VCC +0.5V).

Features

MAX485ECSA+T features: (1)For Fault-Tolerant Applications: MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4 Unit Load, +3.3V, RS-485 Transceiver; MAX3440E–MAX3444E: ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe, RS-485/J1708 Transceivers; (2)For Space-Constrained Applications: MAX3460–MAX3464: +5V, Fail-Safe, 20Mbps, PROFIBUS RS-485/RS-422 Transceivers; MAX3362: +3.3V, High-Speed, RS-485/RS-422 Transceiver in a SOT23 Package; MAX3280E–MAX3284E: ±15kV ESD-Protected, 52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422, True Fail-Safe Receivers; MAX3293/MAX3294/MAX3295: 20Mbps, +3.3V, SOT23, RS-485/RS-422 Transmitters; (3)For Multiple Transceiver Applications: MAX3030E–MAX3033E: ±15kV ESD-Protected, +3.3V, Quad RS-422 Transmitters; (4)For Fail-Safe Applications: MAX3080–MAX3089: Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers.

Diagrams

 MAX485ECSA+T pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
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0-1: $2.20
1-25: $1.48
25-50: $1.20
50-250: $1.18
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(USD)
Quantity
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