THVD2450 ±70-V fault-protected 3.3-V to 5-V RS-485 transceiver with IEC ESD | TI.com

THVD2450
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±70-V fault-protected 3.3-V to 5-V RS-485 transceiver with IEC ESD

 

Description

THVD2410 and THVD2450 are ±70-V fault-protected, half-duplex, RS-422/RS-485 transceivers operating on a single 3-V to 5.5-V supply. Bus interface pins are protected against overvoltage conditions during all modes of operation ensuring robust communication in rugged industrial environments.

These devices feature integrated IEC ESD protection, eliminating the need for external system-level protection components. Extended ±25-V input common-mode range guarantees reliable data communication over longer cable run lengths and/or in the presence of large ground loop voltages. Enhanced 250-mV receiver hysteresis ensures high noise rejection. In addition, the receiver fail-safe feature guarantees a logic high when the inputs are open or shorted together.

THVD24x0 devices are available in small VSSOP and VSON packages for space-constrained applications. 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 and TIA/EIA-422B standards
  • 3-V to 5.5-V supply voltage
  • Differential output exceeds 2.1 V for PROFIBUS
    compatibility with 5-V supply
  • Bus I/O protection
    • ±70-V DC bus fault
    • ±16-kV HBM ESD
    • ±12-kV IEC 61000-4-2 contact discharge
    • ±12-kV IEC 61000-4-2 air-gap discharge
    • ±4-kV IEC 61000-4-4 fast transient burst
  • Half-duplex devices
    available in two speed grades
    • THVD2410: 500 kbps
    • THVD2450: 50 Mbps
  • Extended ambient
    temperature range: -40°C to 125°C
  • Extended operational
    common-mode range: ±25 V
  • Enhanced receiver hysteresis
    for noise immunity
  • Low power consumption
    • Low shutdown supply current: < 1 µA
    • Current during operation: < 5.6 mA
  • Glitch-free power-up/down for hot plug-in capability
  • Open, short, and idle bus failsafe
  • Thermal shutdown
  • 1/8 unit load (up to 256 bus nodes)
  • Small VSON and VSSOP packages to save board space or 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$)
THVD2450 Order now 3.3
5    
1     1     Half     50     12     16     -70 to 70     256     -25 to 25     5.6     Fault protection
IEC ESD protection
Extended common mode    
No     Catalog     -40 to 125     SOIC | 8
SON | 8
VSSOP | 8    
1.49 | 1ku    
SN65HVD1780 Order now 3.3
5    
1     1     Half     0.115         16     -70 to 70     320     -7 to 12     6     Fault protection     No     Catalog     -40 to 105     PDIP | 8
SOIC | 8    
1.85 | 1ku    
SN65HVD1782 Order now 3.3
5    
1     1     Half     10         16     -30 to 30     64     -7 to 12     6       No     Catalog     -40 to 105     PDIP | 8
SOIC | 8    
1.80 | 1ku    
THVD2410 Samples not available 3.3
5    
1     1     Half     0.5     12     16     -70 to 70     256     -25 to 25     5.6     Extended common mode
Fault protection
IEC ESD protection    
No     Catalog     -40 to 125     SOIC | 8
SON | 8
VSSOP | 8