1. Product Overview

️· Part Numbers: SP481E, SP485E
️· Type: RS-485 Transceiver (half-duplex)
️· Function: Provides a transceiver interface for RS-485 communication. Converts logic-level signals to and from differential RS-485 signals.
️· Key Features:
- Half-duplex communication
- Robust ESD protection
- Data rates up to 10 Mbps (not explicitly mentioned but implied by the description of the technology)
- Fail-safe receiver inputs (high impedance when disabled)
- Driver disable feature
- Operating Voltage: Not explicitly stated but assumed to be a standard logic supply voltage.
- Package Options: Standard (lead type options were discontinued and no longer available)

2. Electrical Characteristics (Details are not provided in the provided extract)

️· The datasheet specifies data rates up to 10 Mbps but does not include the numerical values for the electrical specifications in this extract.

3. ESD Protection

️· Human Body Model (HBM): +/- 15kV on driver outputs and receiver inputs.
️· IEC 1000-4-2 (Air Discharge): +/- 15kV on driver outputs and +/- 15kV on receiver inputs.
️· IEC 1000-4-2 (Contact Discharge): +/- 8kV on driver outputs and +/- 8kV on receiver inputs.
️· The datasheet explains the testing methods behind these ESD levels.

4. Functional Description

️· Driver: Converts logic signals to differential RS-485 signals. Driver disable functionality is included.
️· Receiver: Converts differential RS-485 signals to logic signals. The receiver is fail-safe, meaning it's high-impedance when disabled.
️· Half-Duplex: Data is transmitted and received on the same wire pair.

5. Ordering Information

️· Datasheet revision 1.0.0 converted to Exar format and updated the ordering information, due to the discontinued lead-type package options.

6. Revision History

️· Initial release: May 11, 2007, as a legacy Sipex datasheet.
️· December 2008: Converted to the Exar format and revised due to discontinued lead type options.

7. Legal Notices

️· Standard legal disclaimers related to product changes, patent infringement, product liability, and use in life support applications.
️· Copyright notice to Exar Corporation.
️· Technical inquiry email address: uarttechsupport@exar.com

Notes and Assumptions:

️· Missing Electrical Specs: The provided document is incomplete. It lacks the detailed electrical characteristics (e.g., voltage levels, current drive, common-mode voltage range, etc.). You'll need the complete datasheet to fully understand the device's performance.
️· Voltage Levels: The specific voltage levels (e.g., logic high/low) are not stated.
️· Operating Conditions: The operating temperature range, supply voltage requirements, and other environmental conditions are also missing.
️· Package Information: The detail package options are missing.
️· Format Restrictions: The layout of this file has made extracting the information difficult. I have tried to present it in a reasonable format.
️· Incomplete document: The datasheet has a lot of missing information.