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SP3077E Datasheet(PDF) 1 Page - Exar Corporation |
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SP3077E Datasheet(HTML) 1 Page - Exar Corporation |
1 / 20 page 1 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP3070E-SP3078E_100_061109 2 1 3 4 5 6 7 8 9 10 11 12 13 14 14 PIN NSOIC Full Duplex SP3070E SP3073E SP3076E 2 1 3 4 5 6 7 8 8 PIN NSOIC Full Duplex SP3071E SP3074E SP3077E 2 1 3 4 5 6 7 8 8 PIN NSOIC Half Duplex SP3072E SP3075E SP3078E RO RE DE DI GND A B Vcc Vcc RO DI GND A B Z Y DI NC RO RE DE GND GND NC Y Z B A NC Vcc DESCRIPTION FEaTuRES ■ ±15kV ESD protection for RS485 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, 3073 and 3076 in Full-Duplex (14 pin) ■ SP3071E, 3074 and 3077 in Full-Duplex (8 pin) ■ SP3072E, 3075 and 3078 in Half-Duplex (8 pin) ■ Three applications-optimized speed grades ■ SP3070E-72E: 250kbps slew-limited ■ SP3073E-75E: 500kbps slew-limited ■ SP3076E-78E: 16Mbps high speed ■ Small form factor SO-narrow packages ■ Industrial (-40 to +85ºC) and Extended (-40 to +125ºC) temperature grades Now Available in Lead Free Packaging aPPlICaTIONS ■ Industrial Control, Utility Meters Building Automation, Instrumentation, Point of Sale 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 +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 RS485 receiver inputs and driver outputs are ESD protected up to ±15kV (Air-Gap and Human Body Model) and up to ±8kV Contact discharge (IEC 1000-4-2). SP3070E - SP3078E Family ±15kV ESD-Protected, 3.3V, 1/8 load, Failsafe RS-485/RS422 Transceivers |
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