SLLK033 January   2025 THVD9491-SEP

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Device Information
    1. 1.1 Device Details
  5. 2Total Dose Test Setup
    1. 2.1 Test Overview
    2. 2.2 Test Description and Facilities
    3. 2.3 Test Setup Details
      1. 2.3.1 Bias Diagram
    4. 2.4 Test Configuration and Condition
  6. 3TID Characterization Test Results
    1. 3.1 TID Characterization Summary Results
    2. 3.2 Specification Compliance Matrix
  7. 4Reference Documents
  8. 5Appendix A: HDR TID Report Data

1 Device Information

The THVD9491-SEP is a space enhanced, ±40V faultprotected full-duplex RS-422/RS-485 transceiver using a 1.65V to 5.5V logic supply for data and enable logic signals, and a 3V to 5.5V bus side supply. The device has a slew rate select feature that enables the use at two maximum speeds based on the SLR pin setting.

The device features integrated IEC ESD protection, eliminating the need for external system-level protection components. The ±12V input commonmode range makes reliable data communication over longer cable run lengths and/or in the presence of large ground loop voltages. Enhanced 250mV receiver hysteresis provides high noise rejection. In addition, the receiver fail-safe feature makes sure of a logic high when the inputs are open or shorted together.