RENESAS RAA7881502GSU#HB0

The RAA78815x family (RAA788150, RAA788152, RAA788153, RAA788155, RAA788156, RAA788158) of 5V powered RS-485 transceivers features high output drive and high EFT and ESD protection. The devices are immune to ±5KV IEC61000-4-4 EFT transients and withstand ±16.5kV IEC61000-4-2 ESD strikes without latch-up. The large output voltage of 3.1V typical into a 54Ω load provides high noise immunity, and it enables the drive of up to 8000ft long bus segments or eight 120Ω terminations in a star topology. These devices possess less than 125μA bus input currents, therefore, constituting a true 1/8 unit load. The high output drive combined with the low bus input currents allows for the connection of up to 512 transceivers on the same bus. The receiver inputs feature a full fail-safe design that turns the receiver outputs high when the bus inputs are open or shorted. The RAA78815x family includes half and full-duplex transceivers with active-high driver-enable pins and active-low receiver enable pins. These transceivers support data rates of 115kbps, 1Mbps, and 20Mbps with a performance that is characterized from -40℃ to +85℃.

• High VOD: 3.1V (Typ) into RD=54Ω
• ±5KV EFT immunity of bus I/O pins
• ±16.5kV ESD protection on bus I/O pins
• Supported data rates: 115kbps, 1Mbps, 20Mbps
• Full fail-safe outputs for open or shorted inputs
• Hot plug capability
• 1/8 Unit Load
• Allows for up to 512 transceivers on the bus
• Low supply current (driver disabled): 550μA
• Ultra-low shutdown current: 70nA

• Industrial networks in factory automation
• Building automation: lighting, elevators, HVAC
• Industrial process control networks
• Security camera networks
• Networks with star topology
• Long-haul networks in coal mines and oil rigs
• High node-count networks
• Automated utility e-meter reading systems