UM491, UM488 - Slew-Rate-Limited RS-422 Transceivers

Union Semiconductor

The UM491 by Union Semiconductor is a Slew-Rate-Limited RS-422 Transceivers. Below is the official datasheet preview.

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UM491 Slew-Rate-Limited RS-422 Transceivers by Union Semiconductor - Datasheet Preview — Official preview page of the **UM491** Slew-Rate-Limited RS-422 Transceivers datasheet (Union Semiconductor).

Datasheet Details

Part number	UM491, UM488
Manufacturer	UniON Semiconductor
File Size	328.90 KB
Description	Slew-Rate-Limited RS-422 Transceivers
Datasheet	UM488-UnionSemiconductor.pdf
Note	This datasheet PDF includes multiple part numbers: UM491, UM488. Please refer to the document for exact specifications by model.
Additional preview pages of the UM491 datasheet.

UM491 Product details

Description

The UM488/UM491 is ±15kV electrostatic discharge (ESD)-protected, high-speed transceivers for RS-422 communication that contain one driver and one receiver.

Features

fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This means that the receiver output will be a logic high if all transmitters on a terminated bus are disabled (high impedance). The UM488/UM491 offers higher driver output slew-rate limits, allowing transmit speeds up to 2.5Mbps. The device features enhanced ESD protection. All transmitter outputs and receiver inputs are protected to ±15kV using the Human Body Model. These transceiver.

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Published: Jan 14, 2019 |