Alternatives to Texas Instruments ISO1540D
Texas Instruments ISO1540D and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 ISO1540DTexas Instruments |  ISO1640BDRTexas Instruments | ISO1540DRTexas Instruments | +3more | |
|---|---|---|---|---|
| FFF Compatibility | Pin-compatible and identical footprint layout (8-SOIC, 0.154" / 3.90mm width).Matches package style, dimensions, and mounting requirements of the original 8-SOIC package.Meets and exceeds all critical electrical specifications, and supports higher data/clock frequencies. | Identical footprint and pin configuration since it is the same silicon device.Identical physical package dimensions and materials.Identical electrical, isolation, and thermal performance characteristics. | ||
 AI Summary | ISO1540D by Texas Instruments: I2C Digital Isolator 2500Vrms 2 Channel 1Mbps 25kV/µs CMTI 8-SOIC (0.154", 3.90mm Width). | The ISO1640BDR is Texas Instruments' official active recommended upgrade for the legacy ISO1540 series, offering upgraded performance, higher transient immunity, and improved ESD protection in an identical footprint.
| The ISO1540DR is the Tape & Reel packaging variant of the identical silicon die as the queried Tube-packaged ISO1540D. While it is an immediate drop-in option, please note it is part of the same legacy family and shares similar long-term lifecycle obsolescence risks.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | Non-stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | I2C Digital Isolator 2500Vrms 2 Channel 1Mbps 25kV/µs CMTI 8-SOIC (0.154", 3.90mm Width) | I2C Digital Isolator 3000Vrms 2 Channel 50kV/µs CMTI 8-SOIC (0.154", 3.90mm Width) | I2C Digital Isolator 2500Vrms 2 Channel 1Mbps 25kV/µs CMTI 8-SOIC (0.154", 3.90mm Width) | |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | |
| Type | Digital Isolators | Digital Isolators | Digital Isolators | |
| Datasheet | Open | Open | Open | |
| Lead Time | 18 weeks | 16 weeks | 16 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0070 | - | - | |
| Moisture Sensitivity Level | 2 (1 Year) | - | - | |
| Type | I2C | - | - | |
| Data Rate | 1Mbps | - | - | |
| Technology | Capacitive Coupling | - | - | |
| Channel Type | Bidirectional | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Isolated Power | No | - | - | |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | - | - | |
| Voltage - Supply | 3V ~ 5.5V | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 ISO1050DUBTexas Instruments | In stock | Obsolete | 5Alternatives availableSee Alternatives |
 ISO124UTexas Instruments | Non-stock | Active | 3Alternatives availableSee Alternatives |
 ISO7240MDWTexas Instruments | In stock | Obsolete | 10Alternatives availableSee Alternatives |
 ISO7220ADRTexas Instruments | In stock | Active | 5Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Texas Instruments ISO1540D is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the Texas Instruments ISO1540D are the ISO1640BDR (Texas Instruments) and the ISO1540DR (Texas Instruments), out of 5 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the ISO1540D are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The ISO1540D (Texas Instruments) is a part in the Digital Isolators category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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