ISO6720BDR Equivalent & Substitute Parts

Part Overview

The ISO6720BDR is an active, general-purpose dual-channel digital isolator manufactured by Texas Instruments. This component provides galvanic isolation for CAN, RS232, RS485, and SPI communication protocols using capacitive coupling technology. The device operates at 3000Vrms isolation voltage with a maximum common mode transient immunity of 100kV/µs and supports data rates up to 50Mbps. The ISO6720BDR is supplied in an 8-SOIC surface mount package with a 0.154" width (3.90mm). Identifying equivalent and substitute parts is necessary when managing inventory constraints, addressing supply chain variations, or accommodating different compliance requirements across manufacturing batches or regional specifications.

Substiute Parts

ISO6720BDR

Texas InstrumentsIn Stock: 92061ISO6720BDR Datasheet

Current PartRFQ

ISO6720FBDR

Texas InstrumentsIn Stock: 27550ISO6720FBDR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISO6720BDR is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications in the following categories:

Electrical Parameters (Non-Negotiable):

• Isolation voltage: 3000Vrms
• Common mode transient immunity: 100kV/µs minimum
• Data rate: 50Mbps
• Number of channels: 2
• Channel configuration: Unidirectional (2 inputs / 0 outputs)
• Propagation delay: 18ns maximum (both tpLH and tpHL)
• Pulse width distortion: 7ns maximum
• Supply voltage ranges: 1.71V ~ 1.89V and 2.25V ~ 5.5V
• Operating temperature: -40°C ~ 125°C

Mechanical Parameters (Non-Negotiable):

• Package type: 8-SOIC
• Package width: 0.154" (3.90mm)
• Mounting type: Surface Mount

Functional Parameters (Non-Negotiable):

• Technology: Capacitive Coupling
• Protocol support: CAN, RS232, RS485, SPI
• Base product series: ISO6720
• Isolated power: No

The ISO6720FBDR meets all substitution criteria and is classified as a parametric equivalent to the ISO6720BDR.

Parameter Comparison

Engineering Selection Recommendations

Both the ISO6720BDR and ISO6720FBDR are active products from Texas Instruments within the ISO672x Functional Safety series. The primary distinction between these parts is their compliance certification status.

The ISO6720BDR carries RoHS status listed as "Not applicable," indicating it may not be subject to RoHS compliance requirements or may be from a manufacturing batch predating full RoHS3 certification.

The ISO6720FBDR is explicitly marked as "ROHS3 Compliant" and carries "REACH Unaffected" status, indicating full compliance with current European Union environmental and chemical safety regulations.

For applications requiring documented RoHS3 compliance and REACH compliance, the ISO6720FBDR is the appropriate selection. For applications without such regulatory requirements, either part is electrically and mechanically equivalent.

Both parts are supplied in Cut Tape (CT) and Digi-Reel® packaging formats. Current inventory levels differ: ISO6720BDR has 91,968 pieces in stock, while ISO6720FBDR has 27,520 pieces in stock.

Frequently Asked Questions (FAQ)

Q: Are the ISO6720BDR and ISO6720FBDR pin-for-pin compatible?

A: Yes. Both parts use the identical 8-SOIC package with 0.154" width (3.90mm). Pin assignments, signal routing, and PCB footprints are identical. Direct substitution on the circuit board is possible without layout modifications.

Q: What is the difference between the ISO6720BDR and ISO6720FBDR?

A: The electrical and mechanical specifications are identical. The primary difference is compliance certification. The ISO6720FBDR is RoHS3 compliant and REACH unaffected, while the ISO6720BDR does not carry these certifications. Both are active products from Texas Instruments.

Q: Can I use the ISO6720FBDR as a drop-in replacement for the ISO6720BDR?

A: Yes. All electrical parameters, timing specifications, supply voltage ranges, operating temperature range, and package dimensions are identical. The ISO6720FBDR can be used as a direct substitute in any application designed for the ISO6720BDR.

Q: Which part should I select for new designs?

A: For new designs, the ISO6720FBDR is recommended due to its explicit RoHS3 and REACH compliance certifications, which align with current regulatory standards and supply chain expectations. Both parts are active and available from Texas Instruments.

Q: Are there any timing or performance differences between these parts?

A: No. Propagation delay (18ns maximum for both tpLH and tpHL), pulse width distortion (7ns maximum), rise and fall times (2.6ns typical), and all other timing parameters are identical between the ISO6720BDR and ISO6720FBDR.

Q: What is the isolation voltage rating for both parts?

A: Both the ISO6720BDR and ISO6720FBDR provide 3000Vrms galvanic isolation with a common mode transient immunity of 100kV/µs minimum.

Q: Can these parts be used in CAN, RS232, RS485, and SPI applications?

A: Yes. Both parts support all four protocol types: CAN, RS232, RS485, and SPI. The dual-channel, unidirectional configuration (2 inputs / 0 outputs) applies to both parts.

Q: What is the supply voltage range for these isolators?

A: Both parts operate with dual supply voltage ranges: 1.71V ~ 1.89V and 2.25V ~ 5.5V. This allows operation in both low-voltage and standard logic environments.

Q: Are these parts suitable for industrial temperature applications?

A: Yes. Both the ISO6720BDR and ISO6720FBDR operate across the -40°C ~ 125°C temperature range, suitable for industrial and extended-temperature applications.