TPT7487 Isolated RS485 transceiver

　　The TPT7487 is a ±15 kV IEC61000 ESD protected, 3.0 V ~ 5.5 V isolated RS485 transceivers that meet the RS-485 and RS-422 standards for Half Duplex communication. 

The TPT7488 is isolated Full Duplex RS485. The TPT748x features a fail-safe receiver, which support the output of the receiver to be logic high when the differential input (bus pin A/B) of the receiver is open, short or idle. 

Transmitters in this family deliver exceptional differential output voltages into the RS-485 required 54 Ω load. The 500 kbps device has very low bus currents so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 transceivers on the network without using repeaters. Receiver (Rx) inputs feature a “Full Fail-Safe” design, which ensures a logic high Rx output if Rx inputs are floating, shorted, or on a terminated but undriven bus. 

The TPT748x is available in WSOP-16 package and is characterized from −40°C to +125°C.

　　 Exceeds Requirements of EIA-485 Standard

　　 Hot Plug Circuitry - Tx and Rx Outputs Remain

　　Three-State During Power-up/Power-down

　　 Supply voltage: 3.0 V ~ 5.5 V

　　 Data Rate: 500 kbps isolated RS485

　　 Full Fail-safe Receiver (Open, Short, Terminated)

　　 Up to 5 kV RMS Isolation Rating

　　 10 kV Surge Capability

　　 ±150 kV/μs CMTI

　　 Latch-Up performance exceeds 500 mA

　　 Bus-Pin Protection:

　　− ±12 kV IEC61000-4-2 Contact Discharge

　　− ±15 kV IEC61000-4-2 Air Discharge

　　 Safety-Related Certifications:

　　− VDE Reinforced Insulation according to DIN

　　VDE V 0884-11: 2017-01

　　− 5000 Vrms Isolation Rating per UL 1577

　　− CSA C22.2 No. 62368-1:19 3rd, IEC 62368-

　　1:2018 Ed. 3 and EN 62368-1:2020

　　− TUV Certification according to EN 60950-1

　　and EN 61010-1

　　− CQC Certification per GB4943.1-2011

　　Applications

　　 Home Appliance

　　 Motor Drives

　　 Industrial Control

　　 Communication Infrastructure