UNISONIC TECHNOLOGIES CO., LTD

UTRS3082

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 8

Copyright © 2018 Unisonic Technologies Co., Ltd

QW-R113-018.e

FAIL-SAFE, 115KBPS, RS-485 /

RS-422 TRANSCEIVERS WITH

±12KV ESD-PROTECTED



DESCRIPTION

The UTC UTRS3082 is a half-duplex transceiver designed for

RS-485 data bus network, which contains one transmitter and one

receiver. The UTC UTRS3082 features a fail-safe receiver, which

guarantees the receiver to output high when the receiver inputs are

open, short or idle.

The UTC UTRS3082 also features a hot-swap glitch free protection

circuits which guarantee outputs of both the transmitter and the

receiver in a high impedance state during the power up period. So that

the large short current from power to ground will be disable by glitch

free function, which will save the power and enhance the efficiency of

the power up.

The UTC UTRS3082 is optimized for signal rates up to 115Kbps

with differential voltage of 2.3V. The UTC UTRS3082 also has the

thermal shutdown function when the temperature is over 150°C and

the protection of the current limitation in the transmitter to protect the

itself from the damage by the system-fault conditions during normal

operation.



FEATURES

* Meet the requirements of the EIA/TIA-485 standards.

* 5.0V single power supply.

* 1µA low-current shutdown mode.

* HBM ±12kV ESD protection for Transmitter Output

* True fail-safe receiver while maintaining EIA/TIA-485 compatibility.

* Hot-swap glitch free protection on control inputs.

* Up to 256 transceivers on the bus.

* Maximum baud rate up to 115Kbps.

* Transmitter short circuit current limit.

* Thermal shutdown for overload protection.

SOP-8

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ORDERING INFORMATION

Ordering Number

Lead Free

Halogen Free

Package

Packing

UTRS3082L-S08-R

UTRS3082G-S08-R

SOP-8

Tape Reel