1 Features

• 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 25 Mbps
• Low-Current Standby Mode: <1 μA
• Glitch-Free Power-Up and Power-Down Protection for Hot-Plugging Applications
• 5-V Tolerant Inputs
• Bus Idle, Open, and Short-Circuit Fail Safe
• Driver Current Limiting and Thermal Shutdown
• Meet or Exceed the Requirements of ANSI TIA/EIA-485-A and RS-422 Compatible

2 Applications

• Utility Meters
• DTE and DCE Interfaces
• Industrial, Process, and Building Automation
• Point-of-Sale (POS) Terminals and Networks
• Controlled Baseline
• One Assembly and Test Site
• One Fabrication Site
• Available in Military (–55°C/125°C) Temperature Range
• Extended Product Life Cycle
• Extended Product-Change Notification
• Product Traceability

3 Description

The SN65HVD3x-EP devices are 3-state differential line drivers and differential-input line receivers that operate with 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, and SN65HVD32 are fully enabled with no external enabling pins.

The SN65HVD33, SN65HVD34, and SN65HVD35 have active-high driver enables and active-low receiver enables. A low (less than 1 μA) standby current can be achieved by disabling both the driver and receiver.

All devices are characterized for operation from –55°C to 125°C.

1. For all available packages, see the orderable addendum at the end of the datasheet.

Typical Application Schematic