SP3078EEN-L/TR

SP3070E - 3078E differential line transceivers are designed for bidirectional communication on balanced multipoint bus transmission lines, compliant with RS485 and RS422 EIA standards. Each device consists of one differential driver and one differential receiver. All devices are powered by a 3.3V supply. High receiver input impedance allows a large number of transceivers to share a common data bus while maintaining signal margin, without excessive loading or the need for costly repeaters. The high-impedance driver output remains stable across the entire common-mode voltage range of -7V to +12V. When the input is open, shorted, or terminated, the receiver provides a failsafe output of logic 1. The driver includes built-in short-circuit protection and thermal shutdown to prevent excessive power dissipation due to 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 61000-4-2). If the connected receiver includes a 5.0V bias network without a termination resistor, the SP3070E - SP3078E devices may not achieve optimal transmission performance.

Applications

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

Key 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 +85°C) and Extended (- 40 to +125°C) temperature grades