XISO1640BDR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The XISO1640BDR is a robust-EMC bidirectional I2C digital isolator from Texas Instruments supporting up to 1 Mbps data rate and 5.5 V supply in an SOIC-8 package. It provides galvanic isolation between I2C bus segments with hot-plug and arbitration support, passing IEC 61000-4 EMC standards. Available in stock worldwide for industrial and medical isolation designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- XISO1640BDR 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
What are the key features of XISO1640BDR?
- Bidirectional I2C isolation up to 1 Mbps supporting Standard, Fast, and Fast-Plus mode without external logic or directional control pins, simplifying system design
- Robust EMC compliance passing IEC 61000-4-2 ESD at ±8 kV contact and IEC 61000-4-4 EFT at 4 kV, protecting I2C buses in electrically noisy industrial environments
- Hot-plug and bus arbitration support with automatic direction detection allowing any I2C master or slave to initiate communication without startup sequencing constraints
What is XISO1640BDR used for?
The XISO1640BDR is used in industrial motor drives and PLC backplanes to isolate I2C sensor buses from high-voltage power sections, preventing ground loops and protecting low-voltage MCUs from transient surges. In medical equipment such as patient monitors and infusion pumps, it provides the galvanic isolation barrier required to meet IEC 60601-1 reinforced insulation between patient-contact circuits and host processors. It also suits smart energy meters and solar inverters where isolated I2C links connect temperature and current sensors across high common-mode voltage differences of several hundred volts.
What are the specifications of XISO1640BDR?
| Date Of Intro | 2020-10-10 |
| YTEOL | 0 |
| Interface IC Type | DIGITAL ISOLATOR |
| JESD-30 Code | R-PDSO-G8 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.25V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.01 |
Where can I find the XISO1640BDR datasheet?
XISO1640BDR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for XISO1640BDR?
Compatible alternatives and drop-in replacements for XISO1640BDR:
Frequently Asked Questions
What I2C speed modes does the XISO1640BDR support and does it require direction control signals?
The XISO1640BDR supports I2C Standard mode at 100 kbps, Fast mode at 400 kbps, and Fast-Plus mode at 1 Mbps. It uses automatic direction detection so no external logic or GPIO direction pin is needed, allowing any master or slave on either side of the isolation barrier to initiate a transaction without firmware changes to the I2C host driver.
What isolation voltage does the XISO1640BDR provide and which safety standards does it meet?
The XISO1640BDR provides a working insulation voltage of up to 1500 V RMS and passes IEC 61000-4-2 ESD testing at ±8 kV contact discharge. These ratings satisfy the creepage and clearance requirements of IEC 60601-1 for medical equipment and IEC 61010-1 for industrial measurement instruments, reducing the certification burden for isolated I2C interface designs.
For an industrial motor drive PCB, how does the XISO1640BDR protect the microcontroller I2C bus from power stage transients?
In a motor drive, the power stage can generate common-mode transients exceeding 50 V/ns during IGBT switching events. The XISO1640BDR's IEC 61000-4-4 EFT immunity at 4 kV and CMTI exceeding 25 kV/µs prevents these fast transients from coupling through the isolation barrier and corrupting I2C data frames or latching the MCU, maintaining reliable sensor readout even at full rated motor power.
How does the XISO1640BDR handle hot-plug events when a sensor board is inserted into a live I2C backplane?
The XISO1640BDR incorporates internal glitch filtering and bus arbitration logic that tolerate the voltage spikes and spurious transitions generated during hot-plug insertion. When a new sensor card is connected, the isolator prevents these glitches from reaching the main I2C bus, protecting existing slave devices from false starts, and allows communication to resume within 1 µs of the bus settling to a valid state.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 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.
More from Texas Instruments
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.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit