SP3078EMN-L/TR MaxLinear

SP3070E - SP3078E Family 15kV ESD-Protected, 3.3V, 1/8 load, Failsafe RS-485/RS422 Transceivers FEaTuRES 8 PIN NSOIC 5kV ESD protection for RS485 pins 1 8 Vcc RO SP3072E 3.3V low-power operation 2 7 B RE SP3075E Advanced Receiver-failsafe protection for DE 3 6 A SP3078E open, shorted or terminated lines 4 5 DI GND Half Duplex Up to 256 Transceivers may share Bus Very low load for 8x greater fanout 8 PIN NSOIC Hot Swap glitch protection RE and DE Vcc 1 8 A Thermal shutdown protects against driver SP3071E 2 7 RO B contention SP3074E DI 3 6 Z SP3077E Available in three industry standard footprints 4 5 GND Y Full Duplex SP3070E, 3073 and 3076 in Full-Duplex ( 4 pin) SP307E, 3074 and 3077 in Full-Duplex (8 pin) NC 1 14 Vcc SP3072E, 3075 and 3078 in Half-Duplex (8 pin) RO 2 13 14 PIN NSOIC NC Three applications-optimized speed grades RE 3 12 A SP3070E-72E: 250kbps slew-limited SP3070E DE 4 11 B SP3073E-75E: 500kbps slew-limited SP3073E DI 5 10 Z SP3076E SP3076E-78E: 6Mbps high speed GND 6 9 Y Small form factor SO-narrow packages Full Duplex GND 7 8 NC Industrial (-40 to +85C) and Extended (-40 to +25C) temperature grades Now Available in Lead Free Packaging aPPlICa TIONS Industrial Control, Utility Meters Building Automation, Instrumentation, Point of Sale DESCRIPTION The SP3070E-3078E differential line transceivers are suitable for bidirectional communication on balanced multipoint bus transmission lines and comply with both RS485 and RS422 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 + 2V. Receivers will failsafe to logic 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 RS485 receiver inputs and driver outputs are ESD protected up to 5kV (Air-Gap and Human Body Model) and up to 8kV Contact discharge (IEC 6000-4-2). 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. Please see Exar Application Note ANI 2 for further details. Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-70 7 www .exar.com SP3070E-SP3078E 02 202 0 DEVICE aRCHITECTuRE aND BlOCK DIaGRaMS Devices are available in three industry standard architectures and footprints. In each footprint there are three speed grades available. 14 1 VCC NC 13 NC 12 A 4 Pin Full Duplex: 2 R R 11 B SP3070E, 250kbps slew limited 3 REB 4 DE SP3073E, 500kbps slew limited 10 Z 5 D D SP3076E, 6Mbps 9 6 Y GND 8 7 NC GND 1 VCC 8 8 Pin Full Duplex: A 2 R R 7 B SP307 E, 250kbps slew limited SP3074E, 500kbps slew limited 6 Z 3 SP3077E, 6Mbps D D 4 5 Y GND 8 8 Pin Half Duplex: VCC 1 R RO 2 SP3072E, 250kbps slew limited 7 RE B 3 6 DE SP3075E, 500kbps slew limited A 4 DI SP3078E, 6Mbps D 5 GND Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-70 7 www .exar.com SP3070E-SP3078E 02 202 0 2