SIPEX SP485RCN/TR

The SP481R and SP485R are pin-to-pin equivalent with our existing SP485 product and contain enhancements such as higher ESD tolerance and high receiver input impedance. The higher receiver input impedance allows for connecting over 400 transceivers on a single transmission line without degrading the RS-485 driver signal. Each device is packaged in an 8-pin plastic DIP or 8-pin narrow SOIC package. The SP481R offers a shutdown feature via the enable pins which will reduce the supply current (Icc) below 0.5μA typical. The SP485R is a low power RS-485 differential transceiver. Similar to the SP485, the SP485R contains a half-duplex driver and receiver with tri-state control. However, the SP485R is intended for increased connections on a single bus compared to the orignal RS-485 specification. The RS-485 standard is ideal for multi-drop applications where one bus can contain many drivers and/or receivers. The RS-485 standard implementation allows up to 32 transceivers to be connected on to the data bus. RS-485 is also specified for driving higher speeds over long cable lengths of up to 4,000 feet. The SP485R and SP481R exceed the standard b allowing up to 400 receivers to share a bus.

• Allows Over 400 Transceivers On A Transmission Line (1/10th Unit Load)
• High Impedance on Receiver Inputs (RIN = 150kΩ typical)
• Half-Duplex Configuration Consistent With Industry Standard Pinout
• –7V to +12V Common Mode Input Voltage Range
• Includes Shutdown Mode (Icc < 10μA) (For SP481R Only)
• Low Power Consumption (250mW)
• Separate Driver and Receiver Enable
• Now Available in Lead Free Packaging