ISO1500 Datasheet | Texas Instruments

Features - 1 Meets or exceeds requirements of TIA/EIA-485-A - Half-duplex transceiver - Low-EMI 1-Mbps data rate - Bus I/O protection - ± 16 k V HBM ESD - 1.71-V to 5.5-V Logic-side supply (VCC1), 4.5-V to 5.5-V Bus-side supply (VCC2) - 1/8 Unit load: up to 256 nodes on bus - Failsafe receiver for bus open, short, and idle - 100-k V/µs (typical) High mon-mode transient immunity - Extended temperature range from - 40°C to +125°C - Glitch-free power-up and power-down for hot plug- in - Ultra-small SSOP (DBQ-16) package - Safety-related certifications: - 4242-VPK VIOTM and 566-VPK VIORM per DIN VDE V 0884-11:2017-01 - 3000-VRMS Isolation for 1 minute per UL 1577 - IEC 60950-1, IEC 62368-1 and IEC 61010-1 certifications - CQC, TUV, and CSA certifications 2 Applications - Electricity meters - Protection relay - Factory automation & control - HVAC systems and building automation - Motor drives 3 Description The ISO1500 device is a galvanically-isolated differential line transceiver for TIA/EIA RS-485 and RS-422 applications. This device has a 3-channel digital isolator and an RS-485 transceiver in an ultrasmall 16-pin SSOP package. The bus pins of this transceiver are protected against IEC ESD contact discharge and IEC EFT events. The receiver output has a failsafe for bus open, short, and idle conditions. The small solution size of ISO1500 greatly reduces the board space required pared to other integrated isolated RS-485 solutions or discrete implementation with optocouplers and non-isolated RS-485 transceiver. The device is used for long distance munications. Isolation breaks the ground loop between the municating nodes, allowing for a much larger mon mode voltage range. The symmetrical isolation barrier of each device is tested to provide 3000 VRMS of isolation for 1 minute per UL 1577 between the bus-line transceiver and the logic-level interface. The ISO1500 device can operate from 1.71 V to 5.5 V on side 1 which lets the devices interface with lowvoltage FPGAs and...