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ISO7242CDW
Texas Instruments
DGTL ISO 2500VRMS 4CH GP 16SOIC
2044 Pcs New Original In Stock
General Purpose Digital Isolator 2500Vrms 4 Channel 25Mbps 25kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
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5.0 / 5.0
- (88 Ratings)
ISO7242CDW
Product Overview
1297612
DiGi Electronics Part Number
ISO7242CDW-DGManufacturer
Texas Instruments
ISO7242CDW
Description
DGTL ISO 2500VRMS 4CH GP 16SOICInventory
2044 Pcs New Original In Stock
General Purpose Digital Isolator 2500Vrms 4 Channel 25Mbps 25kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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ISO7242CDW Technical Specifications
Category
Digital Isolators
Packaging
Tube
Series
-
Product Status
Last Time Buy
Technology
Capacitive Coupling
Type
General Purpose
Isolated Power
No
Number of Channels
4
Inputs - Side 1/Side 2
2/2
Channel Type
Unidirectional
Voltage - Isolation
2500Vrms
Common Mode Transient Immunity (Min)
25kV/µs
Data Rate
25Mbps
Propagation Delay tpLH / tpHL (Max)
42ns, 42ns
Pulse Width Distortion (Max)
2.5ns
Rise / Fall Time (Typ)
2ns, 2ns
Voltage - Supply
3.15V ~ 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
ISO7242
Datasheet & Documents
Manufacturer Product Page
ISO7242CDW Specifications
HTML Datasheet
ISO7242CDW-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
-296-22966-5-DG
296-22966-5-NDR
-ISO7242CDW-NDR
-ISO7242CDWG4
296-22966-5
-296-22966-5-NDR
-ISO7242CDWG4-NDR
-296-22966-5
Standard Package
40
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Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Leur efficacité logistique contribue à la satisfaction de leurs clients en toute circonstance.
de desembre 02, 2025
I appreciate their commitment to quick delivery and attentive support.
de desembre 02, 2025
DiGi Electronics’ technical support is always available, providing us with timely guidance and assistance.
de desembre 02, 2025
Excellent and swift shipping, combined with responsive after-sales support, made this a great experience.
de desembre 02, 2025
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Frequently Asked Questions (FAQ)
Can the ISO7242CDW safely replace a failing ISO7231CDW in an industrial motor drive design, and what layout or signal integrity risks should I watch for during the migration?
Yes, the ISO7242CDW can serve as a functional replacement for the ISO7231CDW in most industrial applications due to similar channel count, data rate (25 Mbps), and isolation voltage (2500 Vrms). However, the ISO7242CDW has tighter propagation delay matching (42ns max vs. typically higher in older ISO7231 variants) and improved CMTI (25 kV/µs), which may require re-evaluation of timing budgets in high-noise environments like motor drives. Pay close attention to PCB layout: maintain ≥8 mm creepage distance between isolated grounds, minimize loop areas on high-speed signal traces, and ensure solid ground planes under the isolator. Also verify that your existing power rails support the ISO7242CDW’s 3.15–5.5 V supply range, as marginal supplies could increase jitter.
What are the key reliability concerns when using the ISO7242CDW in a 24/7 automotive-grade system operating near its -40°C to 125°C limit, especially regarding long-term isolation integrity?
While the ISO7242CDW is rated for -40°C to 125°C, sustained operation at temperature extremes—particularly above 105°C—can accelerate dielectric aging in its capacitive isolation barrier, potentially reducing long-term isolation voltage margin over years of service. Since this part is in Last Time Buy status, consider qualifying a second-source alternative (e.g., MAX14932BAWE+ or SI8642AB-B-ISR) early to avoid obsolescence risk. For mission-critical automotive systems, implement periodic isolation resistance monitoring if feasible, and avoid mounting the ISO7242CDW near heat-generating components like power MOSFETs without adequate thermal relief. Also ensure conformal coating does not trap moisture, as MSL 2 rating allows only 1 year floor life after baking.
How does the ISO7242CDW compare to the MAX14932BAWE+ for high-speed SPI isolation in a noisy factory automation environment, and when would you choose one over the other?
The ISO7242CDW offers superior common-mode transient immunity (25 kV/µs vs. ~10–15 kV/µs for MAX14932BAWE+) and lower pulse width distortion (2.5 ns max), making it better suited for electrically harsh industrial settings with fast-switching power electronics. However, the MAX14932BAWE+ includes integrated isolated DC-DC functionality (which the ISO7242CDW lacks), simplifying power delivery across the isolation barrier. Choose the ISO7242CDW when signal integrity and noise resilience are paramount and you already have isolated power; opt for the MAX14932BAWE+ if board space is tight and you need both signal and power isolation in one package—but accept slightly lower CMTI performance.
Is it safe to daisy-chain multiple ISO7242CDW devices on the same SPI bus in a multi-node sensor network, and what propagation delay accumulation risks should I account for in timing analysis?
Daisy-chaining ISO7242CDW devices on an SPI bus is technically possible but introduces cumulative propagation delay (up to 42 ns per device per direction) and potential skew between channels, which can violate setup/hold times at high clock frequencies (>10 MHz). Each ISO7242CDW adds ~2 ns rise/fall time, further degrading signal edges over long chains. To mitigate risk, limit daisy chains to ≤2 devices, use series termination resistors (22–33 Ω) near each isolator output, and perform worst-case timing analysis including ±2.5 ns pulse width distortion. For longer chains, consider star-topology isolation with individual ISO7242CDW units or switch to isolators with lower propagation delay variation.
Given that the ISO7242CDW requires external isolated power supplies on both sides, what design pitfalls should I avoid when generating those rails in a compact, cost-sensitive IoT gateway design?
The lack of integrated isolated power in the ISO7242CDW means you must carefully manage ground bounce, efficiency, and EMI when designing external isolated DC-DC converters. Avoid cheap, unregulated flyback converters that exhibit poor load regulation—voltage droop under transient loads can push the ISO7242CDW below its 3.15 V minimum, causing logic errors. Instead, use regulated, low-noise isolated modules (e.g., TI DCH010505 or RECOM RxxPxx series) with output filtering. Keep switching frequencies away from your signal band (e.g., >2 MHz if using <25 Mbps signals) to prevent coupling through parasitic capacitance. Also ensure the isolated ground planes are properly stitched and never connected externally, as this defeats the isolation barrier and risks latch-up or safety compliance failure.
Quality Assurance (QC)
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ISO7242CDW CAD Models
Texas Instruments ISO7242CDW PCB symbols & footprints
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