ISO1500 Series
1-Mbps, half-duplex, 3-kVrms ultra-small isolated RS-485 & RS-422 transceiver
Manufacturer: Texas Instruments
Catalog
1-Mbps, half-duplex, 3-kVrms ultra-small isolated RS-485 & RS-422 transceiver
Key Features
• Meets or exceeds requirements of TIA/EIA-485-AHalf-duplex transceiverLow-EMI 1-Mbps data rateBus I/O protection± 16 kV HBM ESD1.71-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 busFailsafe receiver for bus open, short, and idle100-kV/µs (typical) High common-mode transient immunityExtended temperature range from –40°C to +125°CGlitch-free power-up and power-down for hot plug-inUltra-small SSOP (DBQ-16) packageSafety-related certifications:4242-VPKVIOTMand 566-VPKVIORMper DIN VDE V 0884-11:2017-013000-VRMSIsolation for 1 minute per UL 1577IEC 60950-1, IEC 62368-1 and IEC 61010-1 certificationsCQC, TUV, and CSA certificationsMeets or exceeds requirements of TIA/EIA-485-AHalf-duplex transceiverLow-EMI 1-Mbps data rateBus I/O protection± 16 kV HBM ESD1.71-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 busFailsafe receiver for bus open, short, and idle100-kV/µs (typical) High common-mode transient immunityExtended temperature range from –40°C to +125°CGlitch-free power-up and power-down for hot plug-inUltra-small SSOP (DBQ-16) packageSafety-related certifications:4242-VPKVIOTMand 566-VPKVIORMper DIN VDE V 0884-11:2017-013000-VRMSIsolation for 1 minute per UL 1577IEC 60950-1, IEC 62368-1 and IEC 61010-1 certificationsCQC, TUV, and CSA certifications
Description
AI
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 ultra-small 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 compared 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 communications. Isolation breaks the ground loop between the communicating nodes, allowing for a much larger common mode voltage range. The symmetrical isolation barrier of each device is tested to provide 3000 VRMSof 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 low-voltage FPGAs and ASICs. The supply voltage on side 2 is from 4.5 V to 5.5 V. This device supports a wide operating ambient temperature range from –40°C to +125°C.
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 ultra-small 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 compared 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 communications. Isolation breaks the ground loop between the communicating nodes, allowing for a much larger common mode voltage range. The symmetrical isolation barrier of each device is tested to provide 3000 VRMSof 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 low-voltage FPGAs and ASICs. The supply voltage on side 2 is from 4.5 V to 5.5 V. This device supports a wide operating ambient temperature range from –40°C to +125°C.
