SP3077EEN-L/TR

The SP3070E - SP3078E differential line transceivers are suitable for bidirectional communication on balanced multi- point bus transmission lines and comply with both RS- 485 and RS- 422 EIA Standards. Each device consists of a differential driver and differential receiver. All devices operate from a 3.3V power supply. High receiver input impedance allows a large number of transceivers to share a common data bus while maintaining signal margin and without excessive loading or use of expensive repeaters. The high impedance driver output is maintained over the entire common- mode voltage range from - 7 to +12V. Receivers will failsafe to logic 1 output when inputs are open, shorted or terminated. Drivers include built- in short- circuit protection and a thermal- overload shutdown to protect against excessive power dissipation from bus contention or cable faults. All RS- 485 receiver inputs and driver outputs are ESD protected up to ± 15kV Air- Gap and Human Body Model) and up to ± 8kV Contact Discharge (IEC 61000- 4- 2). The SP3070E - SP3078E devices may not achieve optimal transmit performance if the connected receiver includes a biasing network to 5.0V without a termination resistor.

Applications

• Industrial Control
• Utility Meters
• Building Automation
• Instrumentation
• Point of Sale

Key features

• ±15kV ESD protection for RS- 485 pins
• 3.3V low- power operation
• Advanced receiver- failsafe protection for open, shorted or terminated lines
• Up to 256 transceivers may share Bus
• Very low load for 8x greater fanout
• Hot Swap glitch protection RE and DE
• Thermal shutdown protects against driver contention
• Available in three industry standard footprints
• SP3070E, SP3073E and SP3076E in Full- Duplex (14- pin)
• SP3071E, SP3074E and SP3077E in Full- Duplex (8- pin)
• SP3072E, SP3075E and SP3078E in Half- Duplex (8- pin)
• Three applications- optimized speed grades
• SP3070E - SP3072E: 250kbps slew- limited
• SP3073E - SP3075E: 500kbps slew- limited
• SP3076E - SP3078E: 16Mbps high speed
• Small form factor NSOIC packages
• Industrial (- 40 to 85°C) and Extended (- 40 to 125°C) temperature grades