ISO721DUBR Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments ISO721 is a single-channel high-speed digital isolator supporting 5V supply operation in an 8-pin SOP package. It provides galvanic isolation for digital logic signals in industrial and medical systems. Suitable for SPI, GPIO, and UART level-shifting across isolation barriers up to 2500 VRMS.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- ISO721DUBR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Single-channel digital isolator with up to 5V supply compatibility for direct logic-level integration
- High-speed signal transmission suitable for SPI, UART, and GPIO isolation applications
- 8-pin SOP package with plastic/epoxy body rated for 260°C peak reflow temperature
- RoHS lead-free e4 rating for compliant assembly in industrial and medical equipment
Applications
The ISO721DUBR provides galvanic isolation for digital control signals between microcontrollers and high-voltage peripherals such as motor drivers, gate drivers, and industrial field buses. It is commonly deployed in medical instrumentation where patient-side circuitry must be electrically isolated from mains-referenced control circuits to meet IEC 60601 safety standards. Factory automation PLCs and power converter gate-drive interfaces use it to pass SPI or GPIO signals across a 2500 VRMS isolation barrier without optocoupler speed limitations.
Specifications
| YTEOL | 0 |
| Additional Feature | ALSO OPERATES WITH 5 V SUPPLY |
| Interface IC Type | DIGITAL ISOLATOR |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 4 |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ISO721DUBR:
Frequently Asked Questions
What supply voltage does ISO721DUBR support and how does it interface with 3.3V and 5V logic?
The ISO721DUBR operates with a 5V supply and also functions at 3.3V system levels, allowing it to bridge logic signals between mixed-voltage domains in motor drives, industrial sensors, and microcontroller-to-FPGA interfaces without external level shifters.
Which isolation barrier voltage does ISO721DUBR withstand for industrial safety applications?
The ISO721 is rated for up to 2500 VRMS isolation, providing a robust galvanic barrier that satisfies reinforced insulation requirements in industrial PLCs, inverter gate drives, and medical equipment where ground potentials on either side of the barrier can differ by hundreds of volts.
How does ISO721DUBR compare to an optocoupler for high-speed digital signal isolation?
Unlike optocouplers that typically limit signal rates to a few Mbit/s with variable propagation delay, the ISO721 uses capacitive digital isolation technology to pass signals at significantly higher data rates with consistent nanosecond-range delay, enabling SPI communication at multi-MHz rates through the isolation barrier.
Does ISO721DUBR comply with lead-free soldering requirements for SMT production?
Yes, the ISO721DUBR carries a JESD-609 e4 lead-free rating and withstands a 260°C peak reflow temperature, confirming full RoHS compliance for Sn-Ag-Cu paste assembly in automated surface-mount production lines without special handling requirements.
Related Guides
150141RS73100 Red LED Indicator and Current-Resistor Design Guide
Design a reliable 150141RS73100 red LED indicator with worst-case resistor sizing, GPIO checks, PWM drive, layout, and production validation.
Jul 11, 2026
742792651 Ferrite Bead EMI Filter and Power Integrity Design Guide
Practical guidance for using 742792651 in ferrite-bead EMI filters, including bias, DCR, damping, layout, and validation.
Jul 11, 2026
How to Choose a Ferrite Bead for EMI Suppression Rails: Selection Guide
Compare 742792651 and related ferrite beads by impedance, current rating, DCR, package, layout, and EMI test context.
Jul 10, 2026
150141BS73100 Design Guide for 3528 Status Indicator LED Circuits
Design 3528 status indicator LED circuits with 150141BS73100: current setting, resistor sizing, polarity, optics, and sourcing checks.
Jul 10, 2026
Why Buy from FindMyChip
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.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”