SLLA635 May   2024 THVD4411 , THVD4421 , THVD4431

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Application Use-Case of Multiprotocol Transceivers
  6. 3 Key Design Goals of a Versatile Multiprotocol Transceiver
  7. 4 Discrete Multiprotocol Transceiver Implementation
  8. 5 TI's THVD44xx Multiprotocol Transceiver Family
  9. 6 MODE Configurations for THVD4431
  10. 7 Application Diagrams for THVD4431
  11. 8 Waveforms for THVD4431
  12. 9 Benefits of THVD4431 Over Competition Devices
  13. 10Conclusion

8 Waveforms for THVD4431

This section displays some waveforms captured on THVD4431 configured in RS-232 and in RS-485 modes, while also showing mode switch waveform:

RS-232 Waveform in 250kbps Mode

VCC = 5V, Bus load = 5 kΩ || 2.5 nF

Figure 8-1 RS-232 Waveform in 250kbps Mode
RS-232 Waveform in 1Mbps Mode

VCC = 5V, Bus load = 5 kΩ || 1 nF

Figure 8-2 RS-232 Waveform in 1Mbps Mode
RS-485 Waveform in 500kbps Mode

VCC = 5V, Bus load = 54 Ω || 50 pF

Figure 8-3 RS-485 Waveform in 500kbps Mode
RS-485 Waveform in 20Mbps Mode

VCC = 5V, Bus load = 54 Ω || 50 pF

Figure 8-4 RS-485 Waveform in 20Mbps Mode
RS-232 to RS-485 Mode Switch Waveform

VCC = 5V, L3 = 1 Mbps square wave, SLR = GND, MODE1 toggled at 10 khz

Figure 8-5 RS-232 to RS-485 Mode Switch Waveform