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Texas Instruments ISO7140CCDBQR
- Part No.:
- ISO7140CCDBQR
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ISO7140CCDBQR.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,356
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Product details
Overview
ISO7140CCDBQR from Texas Instruments is a quad-channel digital isolator with galvanic isolation up to 2500 VRMS (1 min, UL) and 4242 VPK (VDE), supporting 50 Mbps max data rate at 5 V and 40 Mbps at 3.3 V/2.7 V supplies. It features four unidirectional forward channels, integrated input noise filtering, TTL-compatible thresholds, and operates across –40°C to 125°C for industrial fieldbus and RS-485 interface isolation.
For engineers reviewing the ISO7140CCDBQR datasheet, ISO7140CCDBQR pinout, ISO7140CCDBQR application, or ISO7140CCDBQR equivalent, this page delivers verified electrical specs, SSOP-16 package mapping, functional channel configuration, safety certifications (UL, VDE, CQC), and real-world implementation guidance for isolated serial communication design.
Technical Context
The ISO7140CCDBQR implements four independent silicon-dioxide (SiO₂) isolation barriers, each with buffered CMOS logic input and output stages separated by 4242 VPK-rated insulation. All inputs are 5-V tolerant when powered from 2.7-V or 3.3-V supplies, enabling mixed-voltage system interfacing.
It uses a single enable pin (EN) to simultaneously control all four output drivers, supports fail-safe output behavior on power loss or input fault, and delivers 25–75 kV/µs common-mode transient immunity (CMTI) depending on supply voltage - critical for noisy industrial environments like motor drives and PLC I/O modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS (UL 1577, 1 min) / 4242 VPK (DIN V VDE V 0884-10), enabling safe separation between hazardous and non-hazardous zones in industrial equipment. |
| Max Data Rate | 50 Mbps at 5 V supply; 40 Mbps at 3.3 V or 2.7 V - supports high-speed SPI, UART, and digital I/O isolation without timing bottlenecks. |
| Propagation Delay | 19 ns typical (5 V), 23 ns typical (3.3 V) - ensures tight timing alignment across isolated microcontroller peripherals and sensor interfaces. |
| Supply Range | 2.7 V to 5.5 V on both VCCI and VCCO sides - allows flexible integration with 3.3-V MCUs and 5-V field-side circuitry. |
| CMTI | 75 kV/µs typical (5 V), 50 kV/µs typical (3.3 V) - suppresses fast transients induced by switching power electronics or ESD events. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, factory automation, and outdoor energy infrastructure applications. |
| Power Consumption | 1 mA per channel at 1 Mbps (3.3 V); 2.3 mA per channel at 25 Mbps (3.3 V) - enables low-power isolated sensing in battery-backed systems. |
Pinout & Package
ISO7140CCDBQR is housed in a 16-pin SSOP (Small Outline) package with 4.90 mm × 3.90 mm body size and standard 0.65 mm lead pitch. The package supports automated assembly and provides thermal resistance of RθJA = 104.5°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA, INB, INC, IND | Input signals for channels A–D | TTL-compatible logic inputs; 5-V tolerant when VCCI = 2.7 V or 3.3 V - simplifies level-shifting in mixed-supply systems. |
| OUTA, OUTB, OUTC, OUTD | Isolated output signals for channels A–D | CMOS outputs with VOH ≥ VCCO – 0.5 V (IOH = –4 mA), VOL ≤ 0.4 V (IOL = 4 mA) - drives standard logic loads directly. |
| VCCI, VCCO | Primary and secondary side power supplies | Independent 2.7–5.5 V supplies for input and output domains - enables true galvanic separation of power domains. |
| GND1, GND2 | Ground references for VCCI and VCCO sides | Physically separate ground pins prevent ground-loop coupling; mandatory for achieving rated isolation performance. |
| EN | Global output enable | Active-high control: outputs enter high-impedance state when EN = low - supports bus sharing and hot-swap capability. |
| NC (pins 6, 11) | No-connect terminals | Floating pins with no internal connection - must remain unconnected per TI design guidelines to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Input Noise Filter | Rejects >11 ns input glitches (2.7 V), >12.5 ns (3.3 V), >11 ns (5 V) - eliminates false triggering from EMI in motor control or power supply feedback paths. |
| Fail-Safe Output Behavior | Outputs default to logic-low within 9.5 µs after input signal loss or primary-side power failure - prevents undefined states in safety-critical I/O. |
| Low Propagation Skew | Channel-to-channel output skew ≤2 ns (same-direction), ≤4 ns (opposite-direction) - maintains signal integrity in parallel data buses like isolated ADC interfaces. |
| Robust ESD Protection | ±4000 V HBM, ±1500 V CDM - withstands handling and board-level ESD events without latch-up or parametric shift. |
| Long-Term Reliability | SiO₂ isolation barrier with >50-year lifetime under rated stress - eliminates aging-related drift in medical or infrastructure monitoring systems. |
Applications
| Industrial Fieldbus Isolation | RS-485 Transceiver Interface |
|---|---|
|
Use Scenario: Isolating PROFIBUS DP or Modbus RTU nodes in factory automation cabinets exposed to 48 V DC field power and motor drive noise. IC Role / Device Role / Timing Role: Quad-channel digital isolator separating MCU UART lines and control signals from isolated RS-485 transceiver side. Use Value: Prevents ground-loop currents from corrupting serial data while maintaining 40 Mbps throughput for real-time motion control commands. |
Use Scenario: Protecting microcontroller UART pins from surge and ESD events in outdoor RS-485 networks (e.g., smart metering, SCADA). IC Role / Device Role / Timing Role: Signal-level isolator for TX, RX, DE, and RE lines between MCU and RS-485 transceiver (e.g., THVD1550). Use Value: Enables 2500 VRMS reinforced isolation without external level shifters or discrete protection components. |
| SPI Bus Isolation | PLC Digital I/O Module |
|
Use Scenario: Isolating high-speed SPI communication between host processor and isolated ADC/DAC in precision test equipment. IC Role / Device Role / Timing Role: Four-channel isolator carrying SCLK, MOSI, MISO, and CS signals across isolation boundary with matched propagation delay. Use Value: Achieves <2 ns channel skew to preserve SPI timing margins at 20+ MHz clock rates without added delay compensation. |
Use Scenario: Providing isolated digital input conditioning for 24 V DC sensor signals in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Forward-channel isolator converting optocoupler-like input signals into clean CMOS levels for FPGA or ARM-based controller. Use Value: Replaces legacy optocouplers with 10× higher speed, 5× lower power, and guaranteed CMTI >50 kV/µs for EMC compliance. |
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 |
|---|---|---|---|
| ADUM1400ARWZ | 5000 VRMS isolation (UL), 100 Mbps max rate, 3.3 V only supply, no 5-V tolerance on inputs | Better suited for high-speed, single-supply systems where 5-V compatibility is unnecessary | Select ADUM1400ARWZ when higher isolation rating and speed are required and input voltage compatibility is constrained to 3.3 V. |
| SI8640BB-B-IS | 5000 VRMS (UL), 150 Mbps, 2.5–5.5 V supply, integrated dc-dc converter option available | Supports isolated power generation on-chip; requires different layout due to integrated transformer | Choose SI8640BB-B-IS when board space is limited and isolated power for the secondary side is needed without external DC/DC. |
Compared with ADUM1400ARWZ and SI8640BB-B-IS, ISO7140CCDBQR offers unique 5-V input tolerance on 2.7/3.3-V supplies, UL+VDE dual certification in SSOP-16, and optimized low-power operation below 1 Mbps - making it ideal for cost-sensitive, mixed-voltage industrial designs requiring regulatory compliance and long-term reliability.
Availability
ISO7140CCDBQR is available at Aetrix Electronics and suitable for industrial fieldbus, RS-485 interface, and PLC digital I/O applications requiring stable component supply, long-lifecycle support, and traceable sourcing from authorized channels.
Supply support for ISO7140CCDBQR 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 connectivity technologies, with decades of expertise in isolation, power management, and industrial-grade IC design.
The ISO71xxCC family was developed specifically for robust, low-power digital signal isolation in harsh industrial environments - emphasizing safety certification, noise immunity, and wide temperature operation over consumer-grade alternatives.
FAQ
What is the maximum data rate supported by ISO7140CCDBQR at 3.3-V supply?
The ISO7140CCDBQR supports a maximum signaling rate of 40 Mbps when operated with 3.3-V supplies on both VCCI and VCCO sides. This is confirmed in Section 6.10 of the datasheet (SLLSE83F), where switching characteristics at 3.3 V ±10% specify tPLH/tPHL up to 45 ns typical, enabling reliable high-speed UART, SPI, and digital I/O isolation in industrial controllers.
Does ISO7140CCDBQR support 5-V tolerant inputs when powered from 3.3 V?
Yes, ISO7140CCDBQR supports 5-V tolerant inputs when supplied from 2.7-V or 3.3-V VCCI. Per Section 3 of the datasheet, "All inputs are 5-V tolerant when supplied from a 2.7-V or 3.3-V supply," allowing direct connection to 5-V sensors or legacy logic without external level shifters - a key differentiator versus many competing isolators.
What safety certifications does ISO7140CCDBQR hold?
ISO7140CCDBQR is certified to UL 1577 (2500 VRMS, 1 minute), DIN V VDE V 0884-10 (4242 VPK), CSA Component Acceptance Notice 5A, IEC 60950-1, IEC 61010-1, and CQC GB 4943.1-2011. These approvals are explicitly listed in the "Safety and Regulatory Approvals" section of the datasheet and apply to the ISO7140CCDBQR device variant.
How does the EN pin function on ISO7140CCDBQR?
The EN (Enable) pin on ISO7140CCDBQR is an active-high global output control. When EN is high or left floating, all four output channels (OUTA–OUTD) are enabled. When EN is pulled low, all outputs enter high-impedance state - a feature used for bus arbitration, power sequencing, or hot-swap isolation in modular systems. Pin function is confirmed in Table 5 (Pin Functions) of the datasheet.
What is the typical propagation delay and channel skew for ISO7140CCDBQR?
At 3.3-V supply, ISO7140CCDBQR exhibits 23 ns typical propagation delay (tPLH/tPHL), 2 ns typical channel-to-channel output skew for same-direction switching, and 4 ns for opposite-direction switching (Section 6.10). These values ensure precise timing alignment across all four channels - essential for parallel data isolation in ADC interfaces or multi-signal sensor conditioning.
ISO7140CCDBQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm 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:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 50Mbps
- Propagation Delay tpLH / tpHL (Max):
- 35ns, 35ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 2ns, 2ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
ISO7140CCDBQR FAQ
1.How can I place an order for ISO7140CCDBQR through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7140CCDBQR 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 ISO7140CCDBQR reliable?
The price and inventory of ISO7140CCDBQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7140CCDBQR is usually 5 days.
3.What payment methods are accepted for ISO7140CCDBQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7140CCDBQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7140CCDBQR?
ISO7140CCDBQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7140CCDBQR 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 ISO7140CCDBQR?
For technical support, including ISO7140CCDBQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7140CCDBQR requirements.
6.How does Aetrix verify that ISO7140CCDBQR is sourced from the original manufacturer or authorized distributors?
All ISO7140CCDBQR 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 ISO7140CCDBQR meets industry standards.
7.What is the process for return or replacement of ISO7140CCDBQR?
All ISO7140CCDBQR units undergo pre-shipment inspection (PSI). If there is an issue with ISO7140CCDBQR, 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 ISO7140CCDBQR part is unused and in its original packaging.
Return procedure for ISO7140CCDBQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7140CCDBQR Tags
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