Texas Instruments Introduces the World's First Extended Common-Mode RS-485 Transceivers

4/8/2003 - Texas Instruments Incorporated (TI) (NYSE: TXN) introduced the world´s first extended common-mode RS-485 transceivers, providing the industry´s greatest protection against noise and fault conditions. More than doubling the TIA/EIA-485 requirements, the SN65HVD2X family of devices is ideal for industrial environments requiring long cable applications 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.

This family of devices is ideally suited for long-cable networks and other applications where the environment is 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.

SN65HVD23 and SN65HVD24 will provide receiver equalization technology, another first from Texas Instruments, for improved jitter performance on differential bus applications with data rates up to 25 Mbps and 3Mbps at cable lengths up to 160 meters and 500 meters, respectively.

The SN65HVD20 provides up to 25 Mbps of signaling rate for interconnecting networks of up to 64 nodes. The SN65HVD21 and SN65HVD22 features driver slew rate control up to 5 Mbps and 500 kbps, respectively, and both devices allow up to 256 connected nodes.

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

Other Features

Available Today
The SN65HVD20, SN65HVD21 and SN65HVD22 are available now from TI and its authorized distributors in 8-pin packaging at $1.93 in quantities of 1,000. The SN65HVD23 is sampling now, with production of SN65HVD23 and SN65HVD24 planned for June 2003. Planned pricing for these two devices is $2.32 in quantities of 1,000.

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