MAX3157CAI+ by Analog Devices

High CMRR RS-485 Transceiver with ±50V Isolation

Status: Active
Series: MAX3157
RoHS: Unknown
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The MAX3157 is a high CMRR RS-485/RS-422 data-communications interface providing ±50V isolation in a hybrid microcircuit. A single +5V supply on the logic side powers both sides of the interface, with external ±50V capacitors transferring power from the logic side to the isolated side. Each MAX3157 contains one transmitter and one receiver and is guaranteed to operate at data rates up to 250kbps. Drivers are short-circuit current limited and 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 receiver output if the inputs are open, shorted, or connected to a terminated transmission line with all drivers disabled. The MAX3157 typically draws 25mA of supply current when unloaded or when fully loaded with the driver disabled. Supply current drops to 25µA when the device is placed in shutdown mode. The device is pin selectable between half- and full-duplex mode and also features independently programmable receiver and transmitter output phase through separate pins. The MAX3157 is a low-cost replacement for opto-isolated transceivers. For fully isolated RS-485/RS-422 transceivers, refer to the MAX1480 family data sheet.

Prices starting from US$11.49


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$13.18
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Logo for element14 element14 US$12.38
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Features

±50V Isolated Data Interface
+5V Single Supply
Low-Cost Replacement for Opto-Isolated Transceivers
True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compliance
Pin-Selectable Full/Half-Duplex Operation
Phase Controls to Correct for Twisted-Pair Reversal
25µA Low-Power Shutdown Mode
Thermal Shutdown for Driver Overload Protection
28-Pin SSOP Package
Slew Rate Limited Reduced EMI

Specifications

# Tx/Rx 1Tx + 1Rx
Duplex Half/Full
VSUPPLY (V) 5
Data Rate (kbps) (min) 250
Galvanic Isolation (±V) 50
ICC (mA) (typ) 25
Tx EN Yes
Rx EN Yes
ICC (Shutdn.) (µA) (typ) 25
Oper. Temp. (°C) -40 to +850 to +70
Package/Pins SSOP HYBRID/28
BudgetaryPrice (See Notes) 6.03


MAX3157CAI+ Semiconductors - ICs by Analog Devices

RS422/RS485 TXRX 250KBPS 5.25V SSOP

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

Device Type Transceiver
IC Interface Type RS422 RS485
No. of Drivers 1Drivers
No. of Receivers 1Receivers
Supply Voltage Min 4.75V
Supply Voltage Max 5.25V
Driver Case Style SSOP
No. of Pins 28Pins
Operating Temperature Min 0°C
Operating Temperature Max 70°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
IC Generic Number MAX3157
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Rs422/Rs485 Txrx, 250Kbps, 5.25V, Ssop | Newark Electronics
RS422/RS485 TXRX, 250KBPS, 5.25V, SSOP | element14

Frequently Asked Questions

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Is the MAX3157CAI+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX3157CAI+ .

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