ISO7041FDBQR - 4-Channel 2 Mbps Low-Power Digital Isolator | TI
MPN: ISO7041FDBQR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.4879 | $2.49 |
| 10 | $2.4879 | $24.88 |
| 100 | $2.4879 | $248.79 |
| 500 | $2.4879 | $1,243.95 |
| 1,000 | $2.4879 | $2,487.90 |
ISO7041FDBQR Overview
A digital isolator transfers logic signals between electrically separated domains by placing a reinforced insulation barrier between input and output buffers. Unlike a transformer or relay interface, the ISO7041 uses capacitive silicon-dioxide isolation and edge-based modulation, allowing low power, compact integration, and no external magnetic components. The 3/1 configuration supports three forward channels and one reverse channel, making it suitable for isolated command, feedback, control, and bidirectional communication links.
Key verified features include 2.25 V to 5.5 V operation, 2 Mbps maximum data speed, 3000 Vrms isolation, fail-safe output behavior, and common-mode transient immunity listed at 50 kV/us by DigiKey and 100 kV/us by LCSC/JLCPCB. The manufacturer identifies the ISO7041 family for ultra-low-power isolation and ATEX-certified applications, while the ISO7041FDBQR ordering variant uses the 16-pin SSOP DBQ package.
The capacitive isolation barrier and integrated digital interfaces are suited to industrial automation, isolated communications, power-conversion control, battery-powered equipment, and test and measurement systems. The low 116 uA/channel supply current is particularly valuable when the isolated side must operate continuously with limited energy budget. Designers should still verify propagation delay, pulse-width distortion, input logic levels, channel direction, and isolation-system safety requirements for the exact operating conditions.
The main PCB consideration is keeping the input-side and output-side copper, ground, and external components physically separated according to the manufacturer isolation layout guidance. Decoupling capacitors should be placed close to the relevant supply pins, while the isolation barrier must remain free of unintended copper bridges, coating residue, or low-voltage test points. For a production design, review the complete TI datasheet, package drawings, creepage and clearance requirements, and the relevant certification documentation rather than relying only on distributor summaries.
This page combines verified manufacturer and distributor data, application context, package information, design notes, and replacement guidance. Those engineering details help distinguish a genuine isolated interface solution from a generic low-voltage logic IC and support faster sourcing and design decisions for compact, reinforced-isolation systems.
Drop-in alternatives for ISO7041FDBQR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ISO7041FDBQR (same form factor and footprint) — differing in Package, MSL Level, Common-Mode Transient Immunity (CMTI), Maximum Data Rate, Number of Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ISO7041DBQ
✅ Drop-In📋 Reference alternative (not in catalog)
ISO7041FDBQR Specifications
| Product Type | Ultra-low-power four-channel digital isolator |
| Channel Configuration | 3 forward / 1 reverse |
| Supply Voltage | 2.25 V to 5.5 V |
| Maximum Data Rate | 2 Mbps |
| Isolation Voltage | 3000 Vrms |
| Common-Mode Transient Immunity | 50 kV/us (DigiKey listing); 100 kV/us (LCSC/JLCPCB listing) |
| Typical Supply Current | 116 uA/channel |
| Propagation Delay | 140 ns (LCSC/JLCPCB listing) |
| Operating Temperature | -55 C to +125 C (TI part-details listing) |
| Package | 16-pin SSOP (DBQ) |
| Package Body Width | 3.90 mm |
| Package Lead Pitch | 0.154 inch |
| Isolation Technology | Double capacitive silicon-dioxide (SiO2) insulation barrier |
| Fail-Safe Output | Yes |
| Multi-Voltage-Domain Interface | Yes |
| Logic Compatibility | CMOS and LVCMOS digital I/O |
| ATEX Certification | Listed for ISO7041 family |
| RoHS | Compliant (JLCPCB listing) |
ISO7041FDBQR 0.154 inch Pin Configuration Guide
Pin configuration for ISO7041FDBQR (0.154 inch package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ISO7041FDBQR.
Refer to the datasheet for full pin configuration.
Typical Applications
ISO7041FDBQR is suitable for 6 applications: Industrial PLC Digital Isolation, Isolated Power-Conversion Control, Battery-Powered Sensor Interface, Isolated Communications Interface, ATEX-Oriented Control Equipment, Test and Measurement Signal Paths.
Industrial PLC Digital Isolation
ISO7041FDBQR is a strong fit for PLC peripheral isolation where low power and compact signal separation matter. The 3/1 arrangement carries three forward control signals and one reverse status signal, while 2 Mbps data rate is adequate for many digital control links. Its 2.25 V to 5.5 V supply range supports mixed logic domains, and 3,000 Vrms reinforced isolation helps separate field-side circuitry from the controller. The low 116 uA/channel supply current is useful in distributed systems. Confirm transient immunity, creepage, clearance, and safety requirements in the TI documentation.
Recommended
Isolated Power-Conversion Control
ISO7041FDBQR can transfer gate-drive, feedback, and control signals across an isolation barrier in power-conversion systems. Three forward channels support several command paths, while the reverse channel can return a status or enable-related signal. The 2 Mbps rate provides more than enough bandwidth for many PWM-control and supervisory signals, and the capacitive SiO2 barrier avoids the size and component count of a discrete transformer interface. Design the split between primary and secondary copper areas carefully, and verify propagation delay, CMTI, and output timing against the power stage requirements.
Recommended
Battery-Powered Sensor Interface
ISO7041FDBQR is appropriate for low-power sensor and measurement front ends that need to cross an isolation barrier. The 116 uA/channel supply current helps preserve battery life when several digital lines must remain active. A 2 Mbps rate is ample for many sensor-control, alarm, configuration, and health-monitoring signals, while 2.25 V to 5.5 V operation accommodates low-voltage sensors and 5 V logic. The reverse channel enables bidirectional control or acknowledgment without adding another isolator. Validate sleep current, startup behavior, and isolation leakage in the complete system, because distributor data does not provide every timing parameter.
Recommended
Isolated Communications Interface
ISO7041FDBQR can provide low-power signal isolation for short digital communication links, configuration buses, and control interfaces that cross equipment boundaries. Its 2 Mbps rate is suitable for many UART-like, SPI-like, or proprietary control signals when timing margins are verified. The four-channel 3/1 organization allows multiple host-to-peripheral lines plus a response line, reducing the number of discrete isolators needed. Use it where galvanic separation and low quiescent power are more important than very high data throughput. Verify input thresholds, cable/board loading, and common-mode transient conditions for the target installation.
Recommended
ATEX-Oriented Control Equipment
ISO7041FDBQR is suitable for control electronics in environments where low-power isolation and certified-family components are required. The TI product page identifies ATEX certification for the ISO7041 family, while the specific ISO7041FDBQR ordering variant provides the 16-pin SSOP package and extended listed temperature range. Three forward channels plus one reverse channel support compact command and feedback architectures. ATEX-related suitability still depends on the complete equipment assessment, applicable standards, installation conditions, and certification scope; the component listing alone does not certify the finished product.
Recommended
Test and Measurement Signal Paths
ISO7041FDBQR can separate instrument-control signals from measurement circuitry where ground potential differences or safety requirements demand isolation. The low-power architecture is helpful in portable or battery-powered instruments, and 2 Mbps is generally sufficient for trigger, mode, status, and configuration signals. The 3/1 channel structure supports command and acknowledgment paths while keeping the isolated side compact. Because instrumentation can involve fast transients and precise timing, check propagation delay, pulse-width distortion, input thresholds, isolation capacitance, and system grounding before finalizing the PCB.
Recommended
Recommended Products Summary
Engineering reference data for ISO7041FDBQR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ISO7041DBQ |
|---|---|---|
| Package | SSOP-16 (DBQ) | SSOP-16 (DBQ) reported equivalent package |
| Brand | Texas Instruments | Texas Instruments |
| Channel Count | 4 | 4 |
| Channel Direction | 3 forward / 1 reverse | 3 forward / 1 reverse reported equivalent |
| Maximum Data Rate | 2 Mbps | Reported identical performance profile |
| Supply Voltage | 2.25 V to 5.5 V | Reported identical performance profile |
| Isolation Voltage | 3000 Vrms | Reported identical performance profile |
| Typical Supply Current | 116 uA/channel | Reported identical performance profile |
| Fail-Safe Output | Yes | Reported identical performance profile |
Key Differentiators
- Four isolated channels in one compact package (vs ISO7041DBQ)
- Low-power isolated data transfer (vs HCPL-2212-500E)
- Family-level ATEX positioning (vs ISO7041DBQ)
Design Notes
Maintain the manufacturer-defined separation between input-side and output-side copper, including power, ground, test points, and component placements. The capacitive isolation barrier must not be bridged by traces, solder mask residue, conductive markings, or rework wire. Place bypass capacitors close to the supply pins on their respective sides of the barrier, and route signals so that high-energy or fast transient paths remain away from the isolated interface.
Check propagation delay, pulse-width distortion, input thresholds, and output loading against the slowest system timing requirement. The 2 Mbps headline data rate should not be interpreted as a guarantee for every channel, voltage, or duty cycle. For short inter-domain signals, use controlled edge rates, avoid long unprotected stubs, and verify that the receiving device remains in its valid logic state when the isolator is disabled or the remote supply is absent.
Do not substitute ISO7041DBQ solely because a distributor comparison reports equivalent performance. Confirm the exact DBQ package, pin numbering, channel direction, operating-temperature suffix, isolation rating, fail-safe behavior, and certification requirements in the TI ordering documentation. A functionally similar device can still differ in timing, default states, supply sequencing, or qualification, so perform a full datasheet review before a drop-in replacement.
The ISO7041FDBQR is specified as an ultra-low-power isolator, but actual board temperature depends on supply voltage, channel activity, switching frequency, ambient temperature, and PCB copper. Estimate dissipation as P approximately equals supply voltage times total supply current, including both isolated sides, then verify the result against the package thermal data and your board environment. Keep the exposed copper around the package adequate for the intended temperature rise.
Compliance Information
JLCPCB lists RoHS compliance for ISO7041FDBQR. TI identifies ATEX certification for the ISO7041 family. REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status were not established in the supplied verified data.
