Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
ISO7321CQDRQ1
Texas Instruments
DGTL ISO 3000VRMS 2CH 8SOIC
17972 Pcs New Original In Stock
General Purpose Digital Isolator 3000Vrms 2 Channel 25Mbps 25kV/µs CMTI 8-SOIC (0.154", 3.90mm Width)
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (484 Ratings)
ISO7321CQDRQ1
Product Overview
1307746
DiGi Electronics Part Number
ISO7321CQDRQ1-DGManufacturer
Texas Instruments
ISO7321CQDRQ1
Description
DGTL ISO 3000VRMS 2CH 8SOICInventory
17972 Pcs New Original In Stock
General Purpose Digital Isolator 3000Vrms 2 Channel 25Mbps 25kV/µs CMTI 8-SOIC (0.154", 3.90mm Width)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
ISO7321CQDRQ1 Technical Specifications
Category
Digital Isolators
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Technology
Capacitive Coupling
Type
General Purpose
Isolated Power
No
Number of Channels
2
Inputs - Side 1/Side 2
1/1
Channel Type
Unidirectional
Voltage - Isolation
3000Vrms
Common Mode Transient Immunity (Min)
25kV/µs
Data Rate
25Mbps
Propagation Delay tpLH / tpHL (Max)
57ns, 57ns
Pulse Width Distortion (Max)
4ns
Rise / Fall Time (Typ)
2.4ns, 2.1ns
Voltage - Supply
3V ~ 5.5V
Grade
Automotive
Qualification
AEC-Q100
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Supplier Device Package
8-SOIC
Base Product Number
ISO7321
Datasheet & Documents
Manufacturer Product Page
ISO7321CQDRQ1 Specifications
HTML Datasheet
ISO7321CQDRQ1-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
296-43276-6
296-43276-1
296-43276-2
-296-43276-1-DG
Standard Package
2,500
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
웹사이트의 고객 후기 섹션이 유용해서 신뢰성을 높여줬어요.
de desembre 02, 2025
他們的快遞服務非常貼心，物流資訊透明，讓我隨時掌握貨物狀況，很棒的購物體驗。
de desembre 02, 2025
Die Nachverkaufsbetreuung bei Di Digi Electronics ist wirklich vorbildlich. Probleme werden schnell und zuverlässig gelöst.
de desembre 02, 2025
ディジエレクトロニクスでのショッピングはいつも製品の品質が一定で安心して購入できます。
de desembre 02, 2025
The customer support was outstanding, making me feel confident in my purchase.
de desembre 02, 2025
The durability of the items is outstanding, making them a great investment.
de desembre 02, 2025
Their dedication to quality ensures my projects are always successful.
de desembre 02, 2025
I was impressed by how efficiently they handled my order, really streamlined the process.
de desembre 02, 2025
DiGi Electronics’s customer support team is professional and always addresses my concerns promptly.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
What are the key design-in risks when using the ISO7321CQDRQ1 in an automotive-grade MCU interface, and how can I mitigate noise coupling in high-EMI environments?
When integrating the ISO7321CQDRQ1 in automotive MCU communication (e.g., between microcontrollers and CAN or SPI peripherals), the primary risk is signal integrity degradation due to high common-mode transients despite its 25kV/µs CMTI rating. Since the ISO7321CQDRQ1 uses capacitive coupling, ensure that PCB layout minimizes ground bounce by using a solid ground plane on the non-isolated side and short return paths. Avoid routing high-speed signals near isolation boundaries, and place decoupling capacitors (100nF ceramic) within 5mm of each supply pin to reduce supply noise. Additionally, maintain creepage and clearance distances per IEC 60664-1 to preserve the 3000Vrms isolation rating in harsh environments. Using guard rings around isolated traces can further suppress leakage currents in humid conditions common in automotive under-hood applications.
Can the ISO7321CQDRQ1 replace the Si86201ED-1-IM in a bidirectional isolated I2C line, and what interface limitations should I consider?
The ISO7321CQDRQ1 cannot directly replace the Si86201ED-1-IM in a bidirectional I2C bus because it features unidirectional channels (1/1 configuration), whereas I2C requires bidirectional signal flow on both SDA and SCL lines. Attempting to emulate bidirectionality with discrete logic or back-to-back buffers introduces unacceptable propagation delays (ISO7321CQDRQ1 has max 57ns) that can break I2C timing, especially at 400kHz or 1MHz speeds. For isolated I2C, consider the ISO1541 or ISO1540 instead, which are designed for bidirectional level-shifting and isolation. If using ISO7321CQDRQ1, restrict it to unidirectional signals such as isolated UART TX/RX or interrupt lines in the same system.
How does the ISO7321CQDRQ1 perform at the edge of its temperature range (-40°C to 125°C), and what derating practices should I apply for long-term reliability in under-hood automotive systems?
The ISO7321CQDRQ1 is AEC-Q100 qualified, enabling stable operation across -40°C to 125°C, but performance margins shrink at temperature extremes. At 125°C junction temperature, CMTI may degrade slightly due to increased parasitic leakage, and propagation delay can increase up to 15% from typical values. To ensure reliability in under-hood applications, derate the isolation barrier by limiting working voltage to ≤70% of 3000Vrms (i.e., ≤2100Vrms) and ensure thermal management via copper pours to limit θJA. Avoid placing the ISO7321CQDRQ1 near high-power components, and use conformal coating to mitigate condensation-induced tracking. Monitor VCC1 and VCC2 supply ripple, as LDO dropout voltage increases at low temperatures (-40°C), risking brown-out resets.
What are the signal integrity trade-offs when operating the ISO7321CQDRQ1 at 25Mbps, and how does it compare to the ISO7721 in high-speed CAN FD isolation?
While the ISO7321CQDRQ1 supports up to 25Mbps, it lacks the tighter pulse width distortion (4ns max vs. 1ns max in ISO7721), making it less ideal for high-speed CAN FD applications requiring precise timing (e.g., 5Mbps data phase). The higher PWD can increase bit error rates over long bus runs. Additionally, the ISO7721 offers better dynamic CMTI performance and lower propagation skew, critical for maintaining data integrity in noisy electric vehicle traction inverter control. For CAN FD, the ISO7721 or ISO1050 are preferred. Use the ISO7321CQDRQ1 only for lower-speed signals (≤2Mbps) such as isolated PWM feedback or status monitoring where timing jitter is less critical.
How should I address power supply sequencing when integrating the ISO7321CQDRQ1 across separated 3.3V and 5V domains to prevent latch-up or bus contention?
Since the ISO7321CQDRQ1 lacks isolated power, external isolated DC-DC converters (e.g., TI’s ISOW7841 or RP1741) are required when bridging 3.3V and 5V domains. To prevent transient bus contention or latch-up during power-up, ensure the supply on the side driving critical outputs reaches stability first. For instance, if Side 1 (3.3V) controls a power stage, sequence it to power up before Side 2 (5V). Use power-good signals to enable output drivers only after both rails are stable. Additionally, select pull-up/pull-down resistors (e.g., 10kΩ) on both sides to define known logic states during power cycling, preventing floating inputs that could trigger false transitions. This is especially critical in systems with asynchronous power domains like battery management or motor control units.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
ISO7321CQDRQ1 CAD Models
Texas Instruments ISO7321CQDRQ1 PCB symbols & footprints
productDetail
