The SP3070-3078E differential line transceivers are suitable for bidirectional communicationon balanced multipoint bus transmission lines and comply with both RS485 and RS422 EIAStandards. Each device consists of a differential driver and differential receiver. All devicesoperate from a 3.3V power supply.High receiver input impedance allows a large number of transceivers to share a common databus while maintaining signal margin and without excessive loading or use of expensiverepeaters. The high impedance driver output is maintained over the entire common-modevoltage 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-overloadshutdown to protect against excessive power dissipation from bus contention or cable faults.All RS485 inputs are ESD protected up to ±15kV (Air-Gap and Human Body Model) and upto ±8kV Contact discharge (IEC 1000-4-2).