ISO6721BDR Equivalent & Substitute Parts

Part Overview

The ISO6721BDR is an active, general-purpose dual-channel digital isolator manufactured by Texas Instruments. This capacitive coupling isolator supports CAN, RS232, RS485, and SPI communication protocols with 3000Vrms isolation voltage and 100kV/µs common mode transient immunity. The device operates across industrial temperature ranges (-40°C to 125°C) and is packaged in 8-SOIC surface mount configuration. Substitute parts are identified to address packaging format requirements, inventory availability, and compliance documentation needs while maintaining identical electrical and functional performance.

Substiute Parts

ISO6721BDR

Texas InstrumentsIn Stock: 5525ISO6721BDR Datasheet

Current PartRFQ

ISO6721FBDR

Texas InstrumentsIn Stock: 3460ISO6721FBDR Datasheet

Parametric EquivalentRFQ

ISO6721RBDR

Texas InstrumentsIn Stock: 3268ISO6721RBDR Datasheet

Parametric EquivalentRFQ

ISO6721RFBDR

Texas InstrumentsIn Stock: 3665ISO6721RFBDR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of ISO6721BDR with equivalent parts is determined by electrical performance parameters and physical package compatibility. All substitute parts maintain identical specifications across isolation voltage, data rate, propagation delay, common mode transient immunity, supply voltage range, operating temperature, and package dimensions. The primary differentiation among substitute parts is packaging format: Cut Tape (CT) & Digi-Reel® versus Tape & Reel (TR). These packaging variants do not affect electrical performance or functional compatibility in circuit applications.

The following parameters establish substitution eligibility:

• Voltage - Isolation: 3000Vrms
• Data Rate: 50Mbps
• Common Mode Transient Immunity: 100kV/µs minimum
• Propagation Delay: 18ns maximum (both directions)
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Operating Temperature: -40°C ~ 125°C
• Supply Voltage Range: 1.71V ~ 1.89V, 2.25V ~ 5.5V

Parameter Comparison

Engineering Selection Recommendations

All substitute parts (ISO6721FBDR, ISO6721RBDR, ISO6721RFBDR) are active products from Texas Instruments with identical electrical specifications and functional performance to the ISO6721BDR. Selection among these parts is based on packaging format requirements and inventory availability.

ISO6721BDR and ISO6721FBDR are supplied in Cut Tape (CT) & Digi-Reel® packaging format, suitable for applications requiring smaller order quantities or manual component handling. Both maintain ROHS3 compliance status for ISO6721BDR; ISO6721FBDR RoHS status is not applicable per provided data.

ISO6721RBDR and ISO6721RFBDR are supplied in Tape & Reel (TR) packaging format, optimized for high-volume automated assembly processes. Both have RoHS status listed as not applicable per provided data.

All parts operate across the full industrial temperature range (-40°C to 125°C), support identical communication protocols (CAN, RS232, RS485, SPI), and maintain 3000Vrms isolation voltage with 100kV/µs common mode transient immunity. Functional Safety (FuSa) certification is present across the entire ISO672x series.

Frequently Asked Questions (FAQ)

Q: Can ISO6721FBDR, ISO6721RBDR, and ISO6721RFBDR be used as direct replacements for ISO6721BDR in circuit applications?

A: Yes. All substitute parts maintain identical electrical performance specifications including isolation voltage (3000Vrms), data rate (50Mbps), propagation delay (18ns maximum), common mode transient immunity (100kV/µs), supply voltage range (1.71V ~ 1.89V, 2.25V ~ 5.5V), operating temperature (-40°C ~ 125°C), and 8-SOIC package dimensions. Electrical and functional compatibility is complete.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?

A: Cut Tape (CT) & Digi-Reel® packaging (ISO6721BDR, ISO6721FBDR) is supplied in smaller quantities on cut tape reels, suitable for lower-volume applications and manual assembly. Tape & Reel (TR) packaging (ISO6721RBDR, ISO6721RFBDR) is supplied on full reels optimized for automated pick-and-place assembly equipment in high-volume production environments. Both packaging formats contain identical components with no electrical performance differences.

Q: Are there compliance or certification differences among the substitute parts?

A: All parts are active products in the ISO672x Functional Safety (FuSa) series. ISO6721BDR carries ROHS3 compliance status. ISO6721FBDR, ISO6721RBDR, and ISO6721RFBDR have RoHS status listed as not applicable per provided documentation. All parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. Moisture Sensitivity Level (MSL) is 2 (1 Year) across all variants.

Q: Which substitute part should be selected for high-volume manufacturing?

A: ISO6721RBDR or ISO6721RFBDR are recommended for high-volume automated assembly due to Tape & Reel (TR) packaging format compatibility with standard pick-and-place equipment. Both maintain identical electrical specifications and current inventory availability (3200 Pcs and 3600 Pcs respectively).

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

A: Yes. All substitute parts support identical communication protocol types: CAN, RS232, RS485, and SPI. The dual-channel unidirectional architecture and 50Mbps data rate are consistent across all variants, enabling direct substitution in applications utilizing any of these protocols.

Q: What is the operating temperature range for all substitute parts?

A: All parts operate across -40°C to 125°C, covering industrial and extended commercial temperature requirements. This range is identical across ISO6721BDR, ISO6721FBDR, ISO6721RBDR, and ISO6721RFBDR.