THVD1419 and THVD1429DR are half-duplex RS-485 transceivers with integrated surgeprotection. Surge protection is achieved by integrating transient voltage suppressor (TVS) diodesin the standard 8-pin SOIC (D) package. This feature provides a substantial increase in reliabilityfor better immunity to noise transients coupled to the data cable, eliminating the need forexternal protection components.
Each of these devices operates from a single 3.3 V or 5 V supply. The devices in thisfamily feature a wide common-mode voltage range which makes them suitable for multi-pointapplications over long cable runs.
The THVD1419 and THVD1429DR devices are available in the industry standard SOIC package foreasy drop-in without any PCB changes. These devices are characterized over ambient free-airtemperatures from –40°C to 125°C.
Feature
- Meets or Exceeds the Requirements of the TIA/EIA-485A Standard
- 3 V to 5.5 V Supply Voltage
- Bus I/O Protection
- ± 16 kV HBM ESD
- ± 8 kV IEC 61000-4-2 Contact Discharge
- ± 30 kV IEC 61000-4-2 Air-Gap Discharge
- ± 4 kV IEC 61000-4-4 Electrical Fast Transient
- ± 2.5 kV IEC 61000-4-5 1.2/50-μs Surge
- Available in Two Speed Grades
- THVD1419: 250 kbps
- THVD1429: 20 Mbps
- Extended Ambient
Temperature Range: -40°C to 125°C - Extended Operational
Common-Mode Range: ± 12 V - Receiver Hysteresis for Noise Rejection: 30 mV
- Low Power Consumption
- Standby Supply Current: < 2 μA
- Current During Operation: < 3 mA
- Glitch-Free Power-Up/Down for Hot Plug-in Capability
- Open, Short, and Idle Bus Failsafe
- 1/8 Unit Load (Up to 256 Bus Nodes)
- Industry Standard 8-Pin SOIC
for Drop-in Compatibility
