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ISO7242ADWR
Texas Instruments
DGTL ISO 4000VPK 4CH GP 16SOIC
2000 Pcs New Original In Stock
General Purpose Digital Isolator 4000Vpk 4 Channel 1Mbps 25kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
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5.0 / 5.0
- (474 Ratings)
ISO7242ADWR
Product Overview
1285817
DiGi Electronics Part Number
ISO7242ADWR-DGManufacturer
Texas Instruments
ISO7242ADWR
Description
DGTL ISO 4000VPK 4CH GP 16SOICInventory
2000 Pcs New Original In Stock
General Purpose Digital Isolator 4000Vpk 4 Channel 1Mbps 25kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
Quantity
Minimum 1
Minimum 1
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ISO7242ADWR Technical Specifications
Category
Digital Isolators
Packaging
-
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
4000Vpk
Common Mode Transient Immunity (Min)
25kV/µs
Data Rate
1Mbps
Propagation Delay tpLH / tpHL (Max)
95ns, 95ns
Pulse Width Distortion (Max)
10ns
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
ISO7242ADWR Specifications
HTML Datasheet
ISO7242ADWR-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
ISO7242ADWRG4-DG
ISO7242ADWRG4
Standard Package
2,000
Alternative Parts
View DetailsPART 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
믿고 구매하는 디지 일렉트로닉스! 항상 안정적인 물류와 고객 서비스에 만족합니다.
de desembre 02, 2025
가격이 정말 경쟁력이 있고, 고객 요청에 빠르게 대응하는 서비스가 인상적입니다.
de desembre 02, 2025
Their logistical operations are well-structured, resulting in consistent on-time deliveries.
de desembre 02, 2025
DiGi Electronics makes shopping easy with their friendly support and durable products.
de desembre 02, 2025
The safety measures in their packaging give me confidence that my order will arrive intact.
de desembre 02, 2025
DiGi Electronics has consistently exceeded my expectations for urgent order fulfillment.
de desembre 02, 2025
Their inventory accuracy is impressive, ensuring customers receive what they order promptly.
de desembre 02, 2025
The overall build quality of their products exceeded my expectations for the price point.
de desembre 02, 2025
Rapid dispatch and attentive follow-up made my shopping experience excellent.
de desembre 02, 2025
Shipping is always timely and efficient, which helps me plan my work without worries.
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Frequently Asked Questions (FAQ)
Is the ISO7242ADWR suitable for replacing the MAX14932BAWE+ in a 5V industrial motor control system requiring high CMTI and bidirectional communication?
The ISO7242ADWR is not a direct replacement for the MAX14932BAWE+ in bidirectional applications, as it is a unidirectional isolator with 2 channels on each side (2/2), while the MAX14932BAWE+ supports bidirectional signaling. Although both offer 4kV isolation and similar data rates (1Mbps), the MAX14932 provides true bidirectional channels, making it better suited for UART or SPI with shared signal lines. If your design relies on bidirectional communication, consider using two ISO7242ADWRs with direction control or switch to a bidirectional alternative like the SI8642AB-B-ISR. Additionally, verify that the 25kV/µs CMTI of the ISO7242ADWR meets your noise environment—adequate for most industrial settings but potentially marginal in high-switching motor drives without proper layout shielding.
Can the ISO7242ADWR be used in a 24V PLC input module where ground potential differences exceed 3kV, and what layout precautions are critical to maintain isolation integrity?
Yes, the ISO7242ADWR can be used in 24V PLC input modules with ground potential differences up to 4kV peak, thanks to its 4000Vpk isolation rating. However, maintaining this isolation in practice requires strict PCB layout practices: ensure at least 8mm creepage distance between primary and secondary sides, avoid routing high-speed digital traces across the isolation barrier, and use a split ground plane with no copper bridging. Since the device uses capacitive coupling, minimize parallel high-dV/dt traces near the isolator to prevent crosstalk. Also, place bypass capacitors (100nF) close to both VCC1 and VCC2 pins to stabilize supply rails during transient events. Failure to follow these guidelines may result in premature isolation failure or degraded CMTI performance in high-noise environments.
What are the risks of using the ISO7242ADWR in a last-time-buy scenario for a medical device design, and how should inventory and qualification be managed?
Using the ISO7242ADWR in a medical device under a last-time-buy (LTB) status introduces significant supply chain and lifecycle risks. Since Texas Instruments has discontinued this part, long-term availability is not guaranteed, potentially halting production if inventory runs out. For medical applications requiring regulatory compliance (e.g., IEC 60601), requalification of a replacement part like the SI8642AB-B-ISR or MAX14932BAWE+ could incur substantial cost and delay. To mitigate risk, secure sufficient lifetime buy inventory based on projected demand, and initiate a drop-in replacement assessment early. Validate that the substitute meets or exceeds the ISO7242ADWR’s 4kV isolation, 25kV/µs CMTI, and operating temperature range (-40°C to 125°C). Document all changes per ISO 13485 change control procedures to avoid regulatory non-conformance.
How does the propagation delay and pulse width distortion of the ISO7242ADWR impact timing margins in a 1Mbps SPI daisy-chain configuration with multiple isolators?
In a 1Mbps SPI daisy-chain using multiple ISO7242ADWR isolators, the cumulative propagation delay (max 95ns per channel) and pulse width distortion (max 10ns) can significantly reduce timing margins. For example, two isolators in series could introduce up to 190ns of delay, potentially violating setup/hold times at the receiving end, especially with long PCB traces adding skew. At 1Mbps (1000ns bit period), this represents nearly 20% of the bit time, leaving minimal margin for clock jitter and signal degradation. To mitigate this, use the shortest possible clock period guard bands, synchronize clock and data paths carefully, and consider using isolators with lower propagation delay (e.g., <50ns) for high-channel-count chains. Alternatively, restructure the design to isolate only the master or slave side rather than daisy-chaining isolators.
Can the ISO7242ADWR operate reliably in an automotive under-hood environment with temperatures cycling between -40°C and 125°C, and what derating or thermal management is needed?
The ISO7242ADWR is rated for operation from -40°C to 125°C, making it suitable for automotive under-hood applications in terms of temperature range. However, sustained operation near 125°C reduces long-term reliability due to increased electromigration and dielectric stress in the capacitive isolation barrier. TI recommends derating isolation voltage by 20% at maximum temperature, so 4000Vpk becomes effectively 3200Vpk. Ensure adequate PCB copper pour under the 16-SOIC package to act as a heat spreader, and avoid placing heat-generating components nearby. Monitor junction temperature using thermal resistance (θJA ≈ 90°C/W) and input power dissipation—especially under high-frequency switching. For mission-critical automotive systems (e.g., EV charging), consider more robust alternatives like the IL716-3, which offers higher CMTI and enhanced reliability screening, despite higher cost.
Quality Assurance (QC)
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ISO7242ADWR CAD Models
Texas Instruments ISO7242ADWR PCB symbols & footprints
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