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Texas Instruments ISOW7840DWE
- Part No.:
- ISOW7840DWE
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISOW7840DWE.pdf
- Description:
- DGTL ISO 5000VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:680
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Product details
Overview
ISOW7840DWE from Texas Instruments is a reinforced quad-channel digital isolator with integrated 5-V input / 5-V output DC-DC converter, delivering up to 130 mA isolated load current, 100 Mbps data rate, and 5000 VRMS isolation rating in a 16-pin wide SOIC package. It serves as a complete signal + power isolation solution for industrial I/O, motor drive gate drivers, and isolated ADC interfaces.
For engineers reviewing the ISOW7840DWE datasheet, ISOW7840DWE pinout, ISOW7840DWE application, or ISOW7840DWE equivalent, this page provides verified technical context, exact pin functions, safety-certified insulation parameters, real-world load capability per configuration, and validated alternative options for space-constrained isolated power + signal designs.
Technical Context
The ISOW7840DWE integrates four unidirectional digital isolation channels (A–D) with independent input-side (VCC/GND1) and output-side (VISO/GND2) domains, plus an on-chip transformer-based DC-DC converter that supports fixed 5-V output when SEL is tied to VISO. Its double capacitive SiO₂ barrier provides signal isolation, while thin-film polymer separates transformer windings for power isolation.
It features ±100 kV/µs CMTI, 13 ns typical propagation delay at 5-V supply, soft-start limiting inrush current, thermal shutdown, and overload/short-circuit protection - all operating across –40°C to +125°C ambient. Safety certifications include VDE-reinforced (7071 VPK), UL 1577 (5000 VRMS), CSA IEC 62368-1, and TUV EN 61010-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | 100 Mbps - enables high-speed serial interfaces (e.g., isolated SPI, RS-485 control) without timing bottlenecks. |
| Isolation rating | 5000 VRMS (1 min) - meets reinforced insulation requirements for industrial and medical end-equipment per UL 1577. |
| Output power | 0.65 W max - supplies isolated logic and low-power analog circuitry (e.g., isolated ADC bias, gate driver bias) without external DC-DC. |
| Load current | ≥130 mA @ 5 V → 5 V - sufficient to power multiple downstream ICs (e.g., isolated transceivers, op-amps, microcontroller peripherals). |
| CMTI | ±100 kV/µs minimum - prevents false triggering in noisy motor drive or grid-tie inverter environments. |
| Propagation delay | 13 ns typical (5-V supply) - supports tight-timing applications like isolated PWM feedback or fast digital control loops. |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive subsystems, industrial PLC backplanes, and solar inverters. |
Pinout & Package
Package: 16-pin wide-body SOIC (DWE), 10.30 mm × 7.50 mm, creepage/clearance >8 mm, reinforced insulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Primary supply input | 3–5.5 V input referenced to GND1; powers internal logic and DC-DC primary side. |
| 2, 8 (GND1) | Primary ground | Return path for VCC and input-side signals (INA–IND); must be separated from GND2 by PCB isolation gap. |
| 3–6 (INA–IND) | Digital inputs | CMOS/LVCMOS-compatible inputs referenced to VSI (VCC or VISO); no internal pull-ups/downs. |
| 7 (NC) | No connect | Internally unused; must remain unconnected and unstubbed on PCB. |
| 9, 15 (GND2) | Secondary ground | Return path for VISO and output-side signals (OUTA–OUTD); galvanically isolated from GND1. |
| 10 (SEL) | VISO selection control | Configures output voltage: short to VISO → 5 V; short to GND2 or float → 3.3 V (ISOW7840DWE fixed at 5 V → 5 V). |
| 11–14 (OUTD–OUTA) | Digital outputs | CMOS/LVCMOS outputs referenced to VSO (VISO); default high on loss of input (no F suffix). |
| 16 (VISO) | Isolated output supply | Regulated 5-V output (for ISOW7840DWE); powers output-side logic and loads up to 130 mA. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DC-DC converter | Eliminates need for external isolated DC-DC, reducing BOM count and PCB area in compact industrial modules. |
| Reinforced isolation barrier | 5000 VRMS rating + 10 kVPK surge + >100-year lifetime at 1 kVRMS enables use in safety-critical motor drives and medical systems. |
| High CMTI (±100 kV/µs) | Prevents metastability in high-dV/dt environments such as IGBT/SiC gate driver feedback paths. |
| Soft-start & protection | Prevents input inrush damage during hot-plug events and ensures robust operation under sustained overload or short-circuit conditions. |
| System-level EMC immunity | ±8 kV IEC 61000-4-2 contact ESD across barrier and low emissions simplify CE/FCC compliance for end equipment. |
Applications
| Industrial PLC Analog I/O Modules | Isolated Motor Drive Gate Driver Power |
|---|---|
Use Scenario: Isolating 4–20 mA current loop inputs and ADC reference supplies in modular PLC backplanes. IC Role / Device Role / Timing Role: Signal + power isolator providing galvanic separation between field-side sensors and controller-side ADC/microcontroller, with synchronized 5-V isolated rail. Use Value: Enables single-chip isolation of both data and bias power, eliminating discrete DC-DC + isolator combinations and reducing board area by >40%. |
Use Scenario: Supplying isolated gate drive bias and level-shifting PWM signals to half-bridge IGBT/SiC drivers in servo inverters. IC Role / Device Role / Timing Role: Quad-channel isolator delivering timing-aligned gate signals and regulated 5-V bias to high-side and low-side drivers across reinforced barrier. Use Value: 13 ns propagation delay matching and ±100 kV/µs CMTI prevent shoot-through and ensure reliable switching in 20+ kHz PWM systems. |
| Grid-Tie Inverter Communication Interface | Isolated Medical Sensor Front-End |
Use Scenario: Isolating RS-485 communication between inverter DSP and energy meter or SCADA system over long cable runs. IC Role / Device Role / Timing Role: Bidirectional signal isolator (via channel pairing) with integrated 5-V isolated supply for transceiver bias and termination. Use Value: 5000 VRMS rating and surge immunity meet IEC 61000-4-5 Level 4 requirements for outdoor grid infrastructure deployments. |
Use Scenario: Isolating EEG/ECG front-end amplifiers and ADCs from patient-connected circuits in diagnostic equipment. IC Role / Device Role / Timing Role: Reinforced isolator providing 2 MOPP patient protection per IEC 60601-1, with clean 5-V isolated rail for precision analog stages. Use Value: CSA and TUV certification for IEC 60601-1 + 250 VRMS working voltage ensures regulatory acceptance in Class II medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel isolated power + signal applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6420ARWZ | 4-channel isolator + 500 mW isolated DC-DC; 50 Mbps max data rate; 2500 VRMS isolation; SOIC-16 package. | Limited to lower-speed control links (e.g., isolated UART, slower SPI); insufficient for 100 Mbps encoder feedback. | Select when cost sensitivity outweighs speed requirement and 2500 VRMS meets system insulation needs. |
| SI88642ED-IS | 4-channel isolator + 500 mW DC-DC; 150 Mbps data rate; 5000 VRMS; QSOP-20 package; no integrated soft-start. | Higher pin count and different footprint; lacks built-in overload/thermal protection, requiring external supervision. | Choose for ultra-high-speed isolated data links where additional PCB area accommodates QSOP-20 and external protection. |
Compared with ISOW7840DWE, ADUM6420ARWZ trades 50% lower data rate and halved isolation rating for broader distributor availability, while SI88642ED-IS offers higher speed but requires layout redesign and external fault management - making ISOW7840DWE optimal for new 100 Mbps industrial designs needing certified 5000 VRMS and integrated protection.
Availability
ISOW7840DWE is available at Aetrix Electronics and suitable for industrial automation, motor control, and grid infrastructure applications requiring stable component supply, long-term lifecycle assurance, and full safety certification traceability.
Supply support for ISOW7840DWE 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 interface solutions for industrial, automotive, and medical markets.
The ISOW784x family was designed to replace discrete isolator + DC-DC combinations in space-constrained, safety-certified systems - delivering integrated signal integrity, isolated power, and regulatory compliance in one SOIC package.
FAQ
What is the maximum load current supported by the ISOW7840DWE at 5-V output?
The ISOW7840DWE supports ≥130 mA load current when configured for 5-V input to 5-V output. This value is specified under recommended operating conditions with VCC = 5 V, TA ≤ 85°C, and proper PCB thermal design. Derating applies above 85°C ambient per the thermal derating curve in the datasheet. The ISOW7840DWE maintains regulation within ±5% across this load range.
Does the ISOW7840DWE require external components for DC-DC stability?
Yes - the ISOW7840DWE requires external input and output capacitors. A minimum 10 µF ceramic capacitor is required between VCC and GND1, and a minimum 22 µF ceramic capacitor between VISO and GND2. Larger values (e.g., 47 µF) improve transient response. No inductor or transformer is needed - the DC-DC converter is fully integrated with on-chip magnetics. The ISOW7840DWE datasheet specifies exact capacitor types, placement, and layout guidelines in Section 11.
How does the SEL pin function on the ISOW7840DWE?
On the ISOW7840DWE, the SEL pin configures the isolated output voltage: tying SEL to VISO selects 5-V output, while tying SEL to GND2 or leaving it floating selects 3.3-V output. However, the ISOW7840DWE is factory-configured for 5-V → 5-V operation, and its SEL pin is internally tied to VISO. Therefore, the ISOW7840DWE always delivers 5-V VISO and does not support 3.3-V output mode - unlike other members of the ISOW784x family.
What safety certifications apply specifically to the ISOW7840DWE?
The ISOW7840DWE carries VDE-reinforced certification per DIN V VDE V 0884-11:2017-01 (7071 VPK), UL 1577 recognition (5000 VRMS), CSA certification per IEC 62368-1 and IEC 60601-1 (2 MOPP), CQC approval per GB4943.1-2011, and TUV certification per EN 61010-1 and EN 60950-1. All certificates are device-specific and listed with unique file numbers (e.g., TUV EN 61010-1 certificate #40040142) in the official TI documentation for ISOW7840DWE.
Can the ISOW7840DWE replace optocouplers in existing designs?
Yes - the ISOW7840DWE can replace optocoupler-based isolation + external DC-DC solutions in designs requiring higher speed, longer lifetime, and tighter timing. Its 100 Mbps data rate exceeds most optocouplers (typically <10 Mbps), and its >100-year projected isolation lifetime eliminates LED degradation concerns. However, PCB layout must observe minimum creepage/clearance (>8 mm), and the ISOW7840DWE's 16-pin SOIC footprint differs from common optocoupler packages - requiring board revision, not drop-in replacement.
ISOW7840DWE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 17.6ns, 17.6ns
- Pulse Width Distortion (Max):
- 4.7ns
- Rise / Fall Time (Typ):
- 4ns, 4ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ISOW7840DWE FAQ
1.How can I place an order for ISOW7840DWE through Aetrix?
Please submit a Request for Quotation (RFQ) for ISOW7840DWE 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 ISOW7840DWE reliable?
The price and inventory of ISOW7840DWE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISOW7840DWE is usually 5 days.
3.What payment methods are accepted for ISOW7840DWE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISOW7840DWE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISOW7840DWE?
ISOW7840DWE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISOW7840DWE 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 ISOW7840DWE?
For technical support, including ISOW7840DWE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISOW7840DWE requirements.
6.How does Aetrix verify that ISOW7840DWE is sourced from the original manufacturer or authorized distributors?
All ISOW7840DWE 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 ISOW7840DWE meets industry standards.
7.What is the process for return or replacement of ISOW7840DWE?
All ISOW7840DWE units undergo pre-shipment inspection (PSI). If there is an issue with ISOW7840DWE, 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 ISOW7840DWE part is unused and in its original packaging.
Return procedure for ISOW7840DWE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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