Description

The SP485RC is an electronic component in the receivers & transceivers category. It is a pin-to-pin equivalent with the SP485 product, but offers 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. The SP485RC is packaged in an 8-pin plastic DIP or 8-pin narrow SOIC package. The SP481R variation of this component also offers a shutdown feature via the enable pins to reduce supply current.

Specifications and features

- 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

Application Scenarios

The SP485RC is suitable for applications that require connecting over 400 transceivers on a single transmission line without degrading the RS-485 driver signal. Its high receiver input impedance makes it ideal for scenarios that require a large number of transceivers. The component's shutdown feature is useful in situations where reducing supply current is necessary.

Comparison

- Higher ESD tolerance
- High receiver input impedance for connecting over 400 transceivers
- Shutdown feature reduces supply current

- Limited to half-duplex configuration