1FEATURES

• Exceeds Requirements of EIA-485 Standard

• Bus-Polarity Correction within 76 ms

• Data Rate: 300 bps to 250 kbps

• Works with Two Configurations:

– Failsafe Resistors Only

– Failsafe and Termination Resistors

• Up to 256 Nodes on a Bus

• SOIC-8 Package for Backward Compatibility

• Bus-Pin Protection:

– ±16 kV HBM protection

– ±12 kV IEC61000-4-2 Contact Discharge

– +4 kV IEC61000-4-4 Fast Transient Burst

APPLICATIONS

• E-meters

DESCRIPTION

The SN888C is a low-power RS-485 transceiver with bus-polarity correction and transient protection. Upon

hot plug-in the device detects and corrects the bus

polarity within the first 76 ms of bus idling. On-chip

transient protection protects the device against IEC61000 ESD and EFT transients.

The SN888C is available in an SOIC-8 package. The device is characterized from –40°C to 85°C.