TI launches extended, common-mode RS-485 transceivers

Dallas, TX—To provide what it reports is the best protection against noise and fault conditions, Texas Instruments Inc. recently introduced what it adds is the world's first extended, common-mode RS-485 transceivers.

By Control Engineering Staff April 30, 2003

Dallas, TX —To provide what it reports is the best protection against noise and fault conditions, Texas Instruments Inc. recently introduced what it adds is the world’s first extended, common-mode RS-485 transceivers. More than doubling TIA/EIA’s present RS-485 requirements, the company’s SN65HVD2X devices are reportedly ideal for industrial environments requiring long cable runs and networks, such as factory automation, security networks and building HVAC systems. These devices can also be used in electrical power inverters, industrial drives and avionics, where electrical environments are severe.

SN65HVD2X devices are designed for environments too harsh for ordinary transceivers. These devices are designed for bi-directional data transmission on multipoint, twisted-pair cables for applications, such as digital motor controllers, remote sensors and terminals, industrial process control, security stations and environmental control systems. For instance, SN65HVD23 and SN65HVD24 provide receiver equalization technology for improved jitter performance on differential bus applications with data rates up to 25 Mbps and 3 Mbps at cable lengths up to 160 meters and 500 meters, respectively. Meanwhile, SN65HVD20 provides up to 25 Mbps of signaling for interconnecting networks of up to 64 nodes. SN65HVD21 and SN65HVD22 feature driver slew rate control up to 5 Mbps and 500 kbps, re-spectively. Both devices allow up to 256 connected nodes.

TI adds that transceivers in its HVD2x family offer performance far exceeding typical RS-485 devices. Besides meeting all requirements of the TIA/EIA-485-A standard, HVD2x operates over an extended range of common-mode voltage, and has features such as high ESD protection, wide receiver hysteresis and true failsafe operation.

For more information, visit www.ti.com/rs485 .

Control Engineering Daily News Desk
Jim Montague, news editor
jmontague@reedbusiness.com