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Texas Instruments ISO7241CQDWRQ1
- Part No.:
- ISO7241CQDWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO7241CQDWRQ1.pdf
- Description:
- DGTL ISO 4000VPK 4CH 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,555
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Product details
Overview
ISO7241CQDWRQ1 from Texas Instruments is a high-speed quad-channel digital isolator with three unidirectional channels and one reverse-direction channel, 25 Mbps signaling rate, <1 ns channel-to-channel output skew, 2 ns max pulse-width distortion, and AEC-Q100 Grade 1 qualification for automotive use in CAN/RS-485 bus interfaces and motor control systems.
For engineers reviewing the ISO7241CQDWRQ1 datasheet, ISO7241CQDWRQ1 pinout, ISO7241CQDWRQ1 application, or ISO7241CQDWRQ1 equivalent, this page delivers verified electrical specs, SOIC-16 DW package layout, safety certifications (VDE 0884-17, UL 1577), and real-world implementation guidance for factory automation, servo drives, and isolated data acquisition.
Technical Context
The ISO7241CQDWRQ1 implements a silicon-dioxide (SiO₂) isolation barrier separating logic-input and logic-output buffers, enabling galvanic isolation up to 2500 VRMS with 4 kV ESD protection and 25-year lifetime at rated working voltage. It supports asymmetric supply configurations: VCC1 and VCC2 independently operate at 3.3 V or 5 V, with 5 V-tolerant inputs regardless of supply level.
Its channel configuration-three forward and one reverse-is fixed per device variant and enables bidirectional signal routing across isolation boundaries without external logic. The C-suffix denotes TTL input thresholds and integrated input noise filtering, distinguishing it from M-suffix CMOS-threshold variants lacking the filter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | 25 Mbps maximum - supports high-speed industrial fieldbus protocols including Modbus RTU and Profibus DP at full data throughput. |
| Channel Configuration | 3 forward + 1 reverse - enables native bidirectional communication on a single quad-isolator, reducing component count vs. dual unidirectional devices. |
| Output Skew | <1 ns max - ensures precise timing alignment across all four outputs, critical for synchronous sampling in motor encoder interfaces. |
| Pulse-Width Distortion | 2 ns max - preserves duty cycle integrity of clock or PWM signals crossing isolation, minimizing jitter-induced timing errors. |
| Common-Mode Transient Immunity | 25–50 kV/μs - maintains signal integrity in noisy environments such as variable-frequency drives and EV battery management systems. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive applications and industrial control cabinets without derating. |
| Safety Certifications | DIN EN IEC 60747-17 (VDE 0884-17), UL 1577, IEC 61010-1, IEC 62368-1 - meets reinforced insulation requirements for functional safety subsystems. |
Pinout & Package
ISO7241CQDWRQ1 uses a 16-pin SOIC (DW) package with 10.30 mm × 10.30 mm footprint and 10.30 mm × 7.50 mm body size. Pin 1 is top-left corner (notch side), with GND1 (pins 2,8), VCC1 (pin 1), GND2 (pins 9,15), and VCC2 (pin 16) forming dual-side power domains.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA, INB, INC, IND | Input channels A–D | Logic-level inputs referenced to VCC1/GND1; IND is reverse-direction input (channel D input side). |
| OUTA, OUTB, OUTC, OUTD | Output channels A–D | Logic-level outputs referenced to VCC2/GND2; OUTD is reverse-direction output (channel D output side). |
| VCC1, GND1 | Input-side supply | Power domain for input buffers and internal logic; accepts 3.3 V or 5 V; pins 1,2,8. |
| VCC2, GND2 | Output-side supply | Power domain for output buffers; independent 3.3 V or 5 V supply; pins 16,9,15. |
| EN1 (pin 7), EN2 (pin 10) | Output enable controls | EN1 enables OUTA–OUTC (forward side); EN2 enables OUTD (reverse side); low = disable, high/open = enable. |
Key Features
| Feature | Design Value |
|---|---|
| TTL input thresholds with noise filter | Prevents sub-20 ns transients from propagating across isolation, eliminating false triggering in electrically noisy factory floors. |
| Asymmetric supply operation | VCC1 and VCC2 may be independently set to 3.3 V or 5 V, enabling direct interface between legacy 5 V microcontrollers and modern 3.3 V FPGAs or ADCs. |
| Reinforced insulation barrier | SiO₂ dielectric provides 2500 VRMS withstand voltage and >10¹² Ω isolation resistance at 25°C, meeting IEC 61010-1 for measurement equipment. |
| Low propagation delay variation | 3 ns max channel-to-channel output skew (tsk(o)) ensures deterministic timing for multi-channel encoder or PWM feedback loops. |
| Fail-safe output capability | Not applicable to ISO7241CQDWRQ1 - failsafe control (CTRL/ DISABLE pins) is exclusive to ISO7240CF-Q1 variant; this part has no failsafe function. |
Applications
| Factory Automation Interface | Servo Motor Control |
|---|---|
Use Scenario: Isolating Modbus RTU or Profibus DP data lines between PLC master and remote I/O modules in harsh industrial environments. IC Role / Device Role / Timing Role: Quad-channel isolator providing galvanic separation for TX/RX pairs and control signals while maintaining 25 Mbps timing integrity. Use Value: Eliminates ground loop currents and common-mode noise coupling, preventing communication dropouts during welding or VFD switching events. |
Use Scenario: Isolating position encoder feedback (A/B/Z quadrature) and PWM gate-drive enable signals in servo amplifier boards. IC Role / Device Role / Timing Role: Three forward channels carry encoder A/B/Z; reverse channel carries enable/disable command from controller to driver stage. Use Value: Enables bidirectional signal flow across isolation boundary without extra components, reducing PCB area and BOM cost by 33% vs. two dual-channel isolators. |
| Data Acquisition System | Automotive Battery Management |
Use Scenario: Isolating analog front-end SPI bus (SCLK/MOSI/MISO/CS) and status alerts between isolated sensor nodes and host MCU in high-voltage test equipment. IC Role / Device Role / Timing Role: Forward channels isolate SCLK, MOSI, CS; reverse channel isolates MISO, preserving full-duplex timing at 20+ MHz. Use Value: Maintains 2 ns pulse-width distortion to prevent SPI frame corruption, ensuring accurate 16-bit ADC readings under EMI stress. |
Use Scenario: Isolating cell voltage monitoring and balancing control signals between BMS MCU (low-voltage domain) and high-side switch drivers in 400 V EV battery packs. IC Role / Device Role / Timing Role: Forward channels transmit balancing commands; reverse channel returns fault status from high-voltage domain to MCU. Use Value: 125°C operation and VDE 0884-17 certification ensure long-term reliability in thermally constrained battery enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO7241CDWRQ1 | No C-suffix; uses CMOS VCC/2 input thresholds and lacks input noise filter - higher susceptibility to fast transients but lower propagation delay (~18 ns typ at 5 V). | Suitable where EMI is minimal and timing-critical control loops demand lowest possible tPLH/tPHL. | Select ISO7241CDWRQ1 only if system-level transient immunity is confirmed via testing; otherwise ISO7241CQDWRQ1's noise filter provides robustness without performance penalty. |
| ADUM1401ARWZ-RL | Analog Devices part with 100 kV/μs CMTI, 100 Mbps rating, and different pinout (SOIC-16 but non-compatible mapping); no AEC-Q100 qualification. | Used in non-automotive industrial systems requiring higher CMTI or bandwidth; requires PCB redesign due to incompatible pin assignment. | Choose ADUM1401ARWZ-RL only when CMTI >50 kV/μs is mandatory and automotive qualification is unnecessary; ISO7241CQDWRQ1 offers better integration for automotive-grade designs. |
Compared with ISO7241CDWRQ1, ISO7241CQDWRQ1 trades ~3 ns higher typical propagation delay for guaranteed noise immunity in electrically hostile environments; versus ADUM1401ARWZ-RL, it provides AEC-Q100 compliance and optimized channel directionality for bidirectional bus protocols without layout rework.
Availability
ISO7241CQDWRQ1 is available at Aetrix Electronics and suitable for factory automation, servo control, and automotive battery management systems requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant isolation.
Supply support for ISO7241CQDWRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability ICs, with decades of expertise in isolation technology and automotive-grade qualification.
The ISO724x-Q1 family targets automotive and industrial systems requiring reinforced isolation, high-speed serial communication, and extended temperature operation - designed specifically for CAN, LIN, RS-485, and motor control interfaces.
FAQ
What is the channel direction configuration of ISO7241CQDWRQ1?
ISO7241CQDWRQ1 has three forward-direction channels (INA→OUTA, INB→OUTB, INC→OUTC) and one reverse-direction channel (IND←OUTD). This fixed 3:1 asymmetry enables native bidirectional data flow across the isolation barrier without external logic inversion or additional isolators, making it ideal for half-duplex bus protocols like Modbus or encoder feedback paths.
Does ISO7241CQDWRQ1 support failsafe output functionality?
No, ISO7241CQDWRQ1 does not include failsafe output control. That feature is exclusive to the ISO7240CF-Q1 variant, which uses CTRL and DISABLE pins to set output state during power loss or input disable. ISO7241CQDWRQ1 has no CTRL or DISABLE pins; its outputs follow input states directly when enabled, with no programmable default state.
What supply voltage combinations are supported by ISO7241CQDWRQ1?
ISO7241CQDWRQ1 supports independent 3.3 V or 5 V supplies on both sides: VCC1 (input side) and VCC2 (output side) may be set to 3.15–3.6 V or 4.5–5.5 V in any combination. Input pins are 5 V tolerant regardless of VCC1 level, allowing direct connection to 5 V logic even when VCC1 = 3.3 V - simplifying mixed-voltage system design.
How does the C-suffix affect ISO7241CQDWRQ1's input behavior?
ISO7241CQDWRQ1's "C" suffix specifies TTL-compatible input thresholds (VIH ≈ 2 V, VIL ≈ 0.8 V) and includes an integrated input noise filter that suppresses transients shorter than ~20 ns. This prevents false triggering from ESD or switching noise - a key differentiator from "M"-suffix variants with CMOS thresholds and no filter, which offer faster response but require cleaner signal sources.
Is ISO7241CQDWRQ1 pin-compatible with other ISO724x-Q1 variants?
Yes, ISO7241CQDWRQ1 shares the same SOIC-16 DW package and pinout as ISO7240CF-Q1 and ISO7242C-Q1, including identical VCC1, GND1, VCC2, GND2, and channel I/O placements. However, EN1/EN2 pin functions differ: ISO7241CQDWRQ1 uses EN1 (pin 7) for forward outputs and EN2 (pin 10) for reverse output, whereas ISO7240CF-Q1 uses DISABLE (pin 7) and CTRL (pin 10). Unused pins must be left floating or tied per variant-specific guidelines.
ISO7241CQDWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 4000Vpk
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 25Mbps
- Propagation Delay tpLH / tpHL (Max):
- 45ns, 45ns
- Pulse Width Distortion (Max):
- 5ns
- Rise / Fall Time (Typ):
- 2ns, 2ns
- Voltage - Supply:
- 3.15V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ISO7241CQDWRQ1 FAQ
1.How can I place an order for ISO7241CQDWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7241CQDWRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISO7241CQDWRQ1 reliable?
The price and inventory of ISO7241CQDWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7241CQDWRQ1 is usually 5 days.
3.What payment methods are accepted for ISO7241CQDWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7241CQDWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7241CQDWRQ1?
ISO7241CQDWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7241CQDWRQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISO7241CQDWRQ1?
For technical support, including ISO7241CQDWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7241CQDWRQ1 requirements.
6.How does Aetrix verify that ISO7241CQDWRQ1 is sourced from the original manufacturer or authorized distributors?
All ISO7241CQDWRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISO7241CQDWRQ1 meets industry standards.
7.What is the process for return or replacement of ISO7241CQDWRQ1?
All ISO7241CQDWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ISO7241CQDWRQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISO7241CQDWRQ1 part is unused and in its original packaging.
Return procedure for ISO7241CQDWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7241CQDWRQ1 Tags
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