THVD1429 3.3-V to 5-V RS-485 transceiver with surge protection | TI.com

THVD1429 (ACTIVE) 3.3-V to 5-V RS-485 transceiver with surge protection

 

Description

THVD1419 and THVD1429 are half-duplex RS-485 transceivers with integrated surge protection. Surge protection is achieved by integrating transient voltage suppressor (TVS) diodes in the standard 8-pin SOIC (D) package. This feature provides a substantial increase in reliability for better immunity to noise transients coupled to the data cable, eliminating the need for external protection components.

Each of these devices operates from a single 3.3 V or 5 V supply. The devices in this family feature a wide common-mode voltage range which makes them suitable for multi-point applications over long cable runs.

The THVD1419 and THVD1429 devices are available in the industry standard SOIC package for easy drop-in without any PCB changes. These devices are characterized over ambient free-air temperatures from –40°C to 125°C.

Features

  • 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

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Parametrics

Compare all products in RS-485 & RS-422 Email Download to Excel
Part number Order Supply voltage(s) (Nom) (V) Number of TX Number of RX Duplex Signaling rate (Max) (Mbps) IEC 61000-4-2 contact (+/- kV) HBM ESD (kV) Fault protection (V) Number of nodes Common mode range ICC (Max) (mA) Features Isolated Rating Operating temperature range (C) Package Group Approx. price (US$)
THVD1429 Order now 3.3
5    
1     1     Half     20     8     16     -15 to 15     256     -12 to 12     3     Surge protection
IEC ESD protection
Extended common mode    
No     Catalog     -40 to 125     SOIC | 8     1.30 | 1ku    
THVD1419 Order now 3.3
5    
1     1     Half     0.25     8     16     -15 to 15     256     -12 to 12     3     Surge protection
IEC ESD protection
Extended common mode    
No     Catalog     -40 to 125     SOIC | 8     1.30 | 1ku