SN65HVD485EDR Integrated Circuit Chip HALF-DUPLEX RS-485 TRANSCEIVER
integrated circuit ic
,integrated circuit components
SN65HVD485E
HALF-DUPLEX RS-485 TRANSCEIVER
FEATURES
- Bus-Pin ESD Protection Up to 15 kV
- 1/2 Unit Load–Up to 64 Nodes on a Bus
- Bus-Open-Failsafe Receiver
- Glitch-Free Power-Up/Down Bus Inputs and Outputs
- Available in Small MSOP-8 Package
- Meets or Exceeds the Requirements of the TIA/EIA-485A Standard
- Industry-Standard SN75176 Footprint
APPLICATIONS
- Motor Control
- Power Inverters
- Industrial Automation
- Building Automation Networks
- Industrial Process Control
- Battery-Powered Applications
- Telecommunications Equipment
DESCRIPTION
The SN65HVD485E is a half-duplex transceiver designed for RS-485 data bus networks. Powered by a 5V supply, it is fully compliant with the TIA/EIA-485A standard. This device is suitable for data transmission up to 10Mbps over long twisted-pair cables and is designed to operate with very low supply current, typically less than 2mA, exclusive of the load. When in the inactive shutdown mode, the supply current drops below 1mA.
The wide common-mode range and high ESD protection levels of this device make it suitable for demanding applications such as, electrical inverters, status/command signals across telecom racks, cabled chassis interconnects, and industrial automation networks where noise tolerance is essential. The SN65HVD485E matches the industry-standard footprint of the SN75176.
Power-on reset circuits keep the outputs in a high-impedence state until the supply voltage has stabilized. A thermal shutdown function protects the device from damage due to system fault conditions. The SN65HVD485E is characterized for operation from –40°C to 85°C air temperature.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted) (1)(2)
VALUE | UNIT | |
Supply voltage range, | -0.5 to 7 | V |
Voltage range at A or B | -9 to 14 | V |
Voltage range at any logic pin | –0.3 to VCC + 0.3 | V |
Receiver output current | –24 to 24 | mA |
Voltage input range, transient pulse, A and B, through 100Ω | –50 to 50 | V |
Storage temperature range | –65 to 130 | °C |
Junction temperature | 170 | °C |
Continuous total power dissipation | Refer to Package Dissipation Table |
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values, except differential I/O bus voltages, are with respect to network ground terminal.
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