XISO1500DBQR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The XISO1500DBQR is a Texas Instruments 3 kVRMS basic isolated RS-485/RS-422 transceiver in an ultra-small SSOP-8 package, supporting up to 500 kbps data rates with integrated isolation across a single component. Designed for industrial fieldbus and motor drive applications requiring reinforced ground isolation. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- XISO1500DBQR Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3 kVRMS basic isolation rating eliminates the need for a separate optocoupler or digital isolator, reducing BOM cost and PCB area in RS-485 industrial network nodes
- Supports RS-485 and RS-422 differential bus standards at data rates up to 500 kbps, enabling robust long-distance communication in noisy industrial environments
- Ultra-small SSOP-8 package integrates driver and receiver with isolation in a footprint under 20 mm², replacing multi-chip solutions in space-constrained designs
Applications
The XISO1500DBQR targets industrial fieldbus nodes, motor drive control panels, and building automation controllers where RS-485 communication must be electrically isolated from high-voltage motor or power circuitry. Its 3 kVRMS isolation rating protects low-voltage MCU systems from ground potential differences of up to hundreds of volts that commonly appear between separated equipment enclosures. Designers use it in PLC I/O modules, energy meters, and distributed sensor networks where a compact, integrated solution is preferred over a discrete optocoupler plus RS-485 driver combination.
Specifications
| YTEOL | 0 |
| Interface IC Type | LINE TRANSCEIVER |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for XISO1500DBQR:
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Frequently Asked Questions
What isolation voltage does the XISO1500DBQR provide, and which safety standard does this meet?
The XISO1500DBQR provides 3 kVRMS basic isolation, which meets the requirements of IEC 61010-1 and similar standards for basic insulation between low-voltage logic circuits and high-voltage industrial power domains. This rating withstands continuous isolation voltage of approximately 560 VRMS working voltage under basic insulation rules, protecting MCU systems from industrial mains transients.
At what maximum data rate can the XISO1500DBQR operate on an RS-485 bus, and how far can signals travel at that rate?
The XISO1500DBQR supports data rates up to 500 kbps. On a standard twisted-pair cable with 120 ohm termination, RS-485 signals at 500 kbps can travel approximately 300 m before signal degradation limits reliable communication. Reducing the data rate to 100 kbps extends the reach to over 1 km on low-capacitance cable.
How does the XISO1500DBQR simplify an isolated RS-485 interface design compared to a discrete optocoupler and driver solution?
A discrete solution requires a separate optocoupler for the TX path, another for the RX path, an isolated DC/DC converter to power the remote side, and an RS-485 driver IC — typically 4 or more components. The XISO1500DBQR integrates the isolation barrier and the differential transceiver into a single SSOP-8 package, eliminating at least 3 ICs, reducing PCB area by over 50%, and removing the isolated power supply requirement by using the device's internal power management across the isolation barrier.
Which package does the XISO1500DBQR use, and what is the recommended PCB creepage and clearance for the 3 kVRMS rating?
The XISO1500DBQR is packaged in an ultra-small SSOP-8 with a 0.65 mm pin pitch. To maintain the 3 kVRMS basic isolation rating, PCB designers must maintain a minimum creepage distance of 4 mm and clearance of 2 mm across the isolation barrier split in the PCB layout, consistent with IEC 60950-1 and IEC 61010-1 requirements for reinforced or basic insulation at the specified working voltage.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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