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ISO7341FCDW
Texas Instruments
DGTL ISO 3000VRMS 4CH GP 16SOIC
2116 Pcs New Original In Stock
General Purpose Digital Isolator 3000Vrms 4 Channel 25Mbps 25kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
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5.0 / 5.0
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ISO7341FCDW
Product Overview
1332092
DiGi Electronics Part Number
ISO7341FCDW-DGManufacturer
Texas Instruments
ISO7341FCDW
Description
DGTL ISO 3000VRMS 4CH GP 16SOICInventory
2116 Pcs New Original In Stock
General Purpose Digital Isolator 3000Vrms 4 Channel 25Mbps 25kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
Quantity
Minimum 1
Minimum 1
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ISO7341FCDW Technical Specifications
Category
Digital Isolators
Packaging
Tube
Series
-
Product Status
Active
Technology
Capacitive Coupling
Type
General Purpose
Isolated Power
No
Number of Channels
4
Inputs - Side 1/Side 2
3/1
Channel Type
Unidirectional
Voltage - Isolation
3000Vrms
Common Mode Transient Immunity (Min)
25kV/µs
Data Rate
25Mbps
Propagation Delay tpLH / tpHL (Max)
58ns, 58ns
Pulse Width Distortion (Max)
4ns
Rise / Fall Time (Typ)
2.1ns, 1.7ns
Voltage - Supply
3V ~ 5.5V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.295", 7.50mm Width)
Supplier Device Package
16-SOIC
Base Product Number
ISO7341
Datasheet & Documents
Manufacturer Product Page
ISO7341FCDW Specifications
HTML Datasheet
ISO7341FCDW-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-38681-5
Standard Package
40
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
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de desembre 02, 2025
DiGi Electronics provides exceptional after-sales support that truly exceeds expectations.
de desembre 02, 2025
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de desembre 02, 2025
Arrived in an impeccably sealed box, and the product demonstrates excellent toughness.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the ISO7341FCDW in a high-noise industrial PLC system, and how can CMTI be effectively managed?
When integrating the ISO7341FCDW in noisy environments like industrial PLCs, the primary risk is signal corruption due to ground shifts or EMI-induced transients. With a minimum Common Mode Transient Immunity (CMTI) of 25kV/µs, the ISO7341FCDW offers robust performance, but achieving optimal results requires careful PCB layout. Use a solid isolation barrier with minimal loop areas, place bypass capacitors (0.1µF) close to each power pin, and ensure a clean, split ground plane. Avoid routing noisy signals parallel to isolator traces to prevent coupling. Additionally, keep the isolation distance compliant with 3000Vrms requirements by maintaining proper creepage and clearance (≥6.2mm on standard FR4). These steps mitigate transient-induced latch-up or data errors in motor control or factory automation applications.
Can the ISO7341FCDW replace the Si8641BB-IP1 in a bidirectional digital isolation circuit, and what are the critical limitations?
The ISO7341FCDW cannot directly replace the Si8641BB-IP1 in bidirectional circuits due to its unidirectional channel configuration (3 forward, 1 reverse). The Si8641BB-IP1 supports bidirectional signaling on all four channels, while the ISO7341FCDW only allows one channel to transmit in reverse. Attempting to use it as a drop-in replacement may break I2C, SPI feedback, or other bidirectional protocols without additional buffering or level-shifting. If redesign is feasible, confirm the data direction map aligns with your bus architecture. For full bidirectional replacement, consider the ISO7741 instead. Always validate timing margins—ISO7341FCDW's max 58ns propagation delay suits 25Mbps applications but may limit high-speed feedback loops compared to Si8641's lower skew.
How does the absence of isolated power in the ISO7341FCDW impact system design in a 5V to 3.3V level-shifting application?
Since the ISO7341FCDW does not integrate isolated power, you must provide separate isolated power rails for each side of the barrier (e.g., using a push-pull or LLC DC-DC converter like the TI DCH0105D). In 5V-to-3.3V level shifting, ensure each side's supply matches the respective logic levels—VCCI at 5V and VCCO at 3.3V. Misalignment risks latch-up or bus contention, especially during power sequencing. Use power-good monitoring and staggered power-up (primary before secondary) to prevent transient back-driving. Additionally, opt for low-noise isolated power supplies to avoid injecting ripple into the sensitive capacitive isolation barrier, which could degrade CMTI performance.
What reliability concerns should be addressed when deploying the ISO7341FCDW in extended temperature automotive applications near 125°C?
Operating the ISO7341FCDW at its upper limit of 125°C requires attention to thermal and long-term reliability risks. While the device is rated for -40°C to 125°C, junction temperature should be kept below 115°C for better lifetime reliability (per TI's FIT rate models). Use thermal vias under the exposed pad (if present) and ensure adequate copper pour for heat dissipation. Avoid placing the ISO7341FCDW near high-power components like gate drivers or processors. Also, confirm the MSL2 rating is respected—limit floor time to under 1 year with dry pack storage or baking per J-STD-020. For automotive under-hood use, combine with conformal coating to prevent leakage currents in humid environments, preserving the 3000Vrms isolation integrity over 20+ years.
How does the 4-channel unidirectional configuration of the ISO7341FCDW affect redundancy and fault-tolerant design in safety-critical systems?
The ISO7341FCDW’s 3:1 unidirectional channel split limits redundancy options in dual-signal or fail-safe architectures. For example, in a safety PLC requiring dual confirmation signals, only three channels are available for primary signals, leaving one for feedback—preventing full voting or cross-checking schemes. Compared to balanced isolators like the ISO7841 (4-channel bidirectional), this can necessitate extra components or a second isolator, increasing BOM cost and board space. To mitigate, reserve the reverse channel for critical fault reporting only (e.g., overcurrent alerts), and use external Schmitt-trigger buffers to re-drive signals if duplication is needed. Validate pulse width distortion (max 4ns) to ensure timing coherence between channels during fault detection, avoiding false triggers in SIL-2 or SIL-3 systems.
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ISO7341FCDW CAD Models
Texas Instruments ISO7341FCDW PCB symbols & footprints
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