ISO1500 Texas instruments

ISO1500

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ISO1500

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Описание

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 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 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.

Meets or exceeds requirements of TIA/EIA-485-A
Half-duplex transceiver
Low-EMI 1-Mbps data rate
Bus I/O protection
- ± 16 kV HBM ESD
1.71-V to 5.5-V Logic-side supply (V_CC1), 4.5-V to 5.5-V Bus-side supply (V_CC2)
1/8 Unit load: up to 256 nodes on bus
Failsafe receiver for bus open, short, and idle
100-kV/µs (typical) High common-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-V_PK V_IOTM and 566-V_PK V_IORM per DIN VDE V 0884-11:2017-01
- 3000-V_RMS Isolation for 1 minute per UL 1577
- IEC 60950-1, IEC 62368-1 and IEC 61010-1 certifications
- CQC, TUV, and CSA certifications

Number of receivers	1
Number of transmitters	1
Duplex	Half
Common-mode range (V)	-7 to 12
Number of nodes	256
Isolated	Yes
Rating	Catalog
Operating temperature range (°C)	-40 to 125