Global Sources
EE Times-Asia
Stay in touch with EE Times Asia

( File format: PDF, 819 KB )
3.3 V Full-Duplex RS 485 Drivers and Receivers (Rev. D)
Texas Instruments

The SN65HVD3X devices are 3-state differential line drivers and differential-input line receivers that operate with 3.3-V power supply. Each driver and receiver has separate input and output pins for full-duplex bus communication designs. They are designed for balanced transmission lines and interoperation with ANSI TIA/EIA-485A, TIA/EIA-422-B, ITU-T v.11 and ISO 8482:1993 standard-compliant devices. The SN65HVD30, SN65HVD31, SN65HVD32, SN65HVD36 and SN65HVD37 are fully enabled with no external enabling pins. The SN65HVD33, SN65HVD34, SN65HVD35, SN65HVD38, and SN65HVD39 have active-high driver enables and active-low receiver enables. A low, less than 1?A, standby current can be achieved by disabling both the driver and receiver. All devices are characterized for ambient termperatures from ?40C to 85C. Low power dissipation allows operation at temperatures up to 105C or 125C, depending on package option. The preview devices SN65HVD36 and SN65HVD38 implement receiver equalization technology for improved jitter performance on differential bus applications with data rates up to 20 Mbps at cable lengths up to 160 meters. The preview devices SN65HVD37 and SN65HVD39 implement receiver equalization technology for improved jitter performance on differential bus applications with data rates in the range of 1 to 5 Mbps at cable lengths up to 1000 meters.
1/8 Unit-Load Option Available (Up to 256 Nodes on the Bus) Bus-Pin ESD Protection Exceeds 15 kV HBM Optional Driver Output Transition Times for Signaling Rates(1) of 1 Mbps, 5 Mbps and 26 Mbps Low-Current Standby Mode: < 1 ?A Glitch-Free Power-Up and Power-Down Protection for Hot-Plugging Applications 5-V Tolerant Inputs Bus Idle, Open, and Short Circuit Failsafe Driver Current Limiting and Thermal Shutdown Meets or Exceeds the Requirements of ANSI TIA/EIA-485-A and RS-422 Compatible 5-V Devices available, SN65HVD50-59 APPLICATIONS Utility Meters DTE/DCE Interfaces Industrial, Process, and Building Automation Point-of-Sale (POS) Terminals and Networks (1) The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).

As the hyperlinked contents/websites are those of third parties, we cannot vouch for their accuracy or legitimacy.
Interviews & Viewpoints


Learn how senior executives are seeing the industry from interviews and contributed opinions.

Bloggers Say

Bloggers Say

See what engineers like you are posting on our pages.

Back to Top