My Inquiry
My Account
Texas Instruments ISO7840DW
- Part No.:
- ISO7840DW
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO7840DW.pdf
- Description:
- DGTL ISO 5700VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:222
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISO7840DW from Texas Instruments is a reinforced quad-channel digital isolator with 8000VPK isolation voltage, 100Mbps signaling rate, ±100kV/μs CMTI, and dual 2.25V–5.5V supply domains (VCCI/VCCO). It provides forward-only signal transmission with enable-controlled high-impedance outputs and default-high output behavior on input-side power loss, used in motor control gate drivers and isolated power supply feedback loops.
For engineers reviewing the ISO7840DW datasheet, ISO7840DW pinout, ISO7840DW application, or ISO7840DW equivalent, this page delivers verified electrical specs, SOIC-16 wide-body package mapping, functional pin roles, safety-certified insulation parameters, and real-world implementation context for industrial and medical isolation design.
Technical Context
The ISO7840DW implements four independent SiO2 capacitive isolation channels with separate input (VCCI/GNDI) and output (VCCO/GNDO) power domains, enabling level translation between 2.25V and 5.5V logic families. Each channel includes an input buffer, capacitive barrier, and output buffer with integrated enable control (EN2).
It features fail-safe default-high output behavior during VCCI loss, low propagation delay (11ns typical at 5V), and robust EMC performance validated by system-level ESD (±6kV HBM), EFT, and surge immunity. Its reinforced isolation meets DIN EN IEC 60747-17 (VDE 0884-17) and UL 1577 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 8000VPK reinforced per VDE 0884-17 - enables safe operation in 1000VRMS mains-connected systems like solar inverters and EV chargers. |
| Signaling Rate | 100Mbps - supports high-speed serial interfaces including isolated SPI, RS-485 transceiver control, and PWM feedback in servo drives. |
| CMTI | ±100kV/μs minimum - prevents false triggering in noisy motor drive environments with fast-switching SiC/GaN FETs. |
| Propagation Delay | 11ns typical (5V supplies) - ensures tight timing alignment across isolated control and feedback paths in closed-loop power converters. |
| Supply Range | 2.25V to 5.5V per side - allows direct interfacing with 3.3V microcontrollers and 5V analog front-ends without external level shifters. |
| Operating Temperature | –55°C to +125°C - qualified for under-hood automotive, industrial PLC, and medical imaging equipment deployment. |
| Power Consumption | 1.7mA per channel at 1Mbps - reduces thermal load in densely packed isolated gate driver boards and multi-channel data acquisition modules. |
Pinout & Package
ISO7840DW uses a 16-pin wide-body SOIC (DW) package measuring 10.30mm × 10.30mm with 7.50mm body width and >8.15mm creepage/clearance. The isolation barrier separates pins 1–8 (input side) from pins 9–16 (output side).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC1 (Pin 1) | Input-side power supply | Supplies input buffers and logic; must be decoupled locally to maintain noise immunity and meet 2.25–5.5V operating range. |
| INA–IND (Pins 3–6) | Digital input channels A–D | CMOS/LVCMOS-compatible inputs accepting 0.3×VCCI to 0.7×VCCI thresholds; no external pull-ups required. |
| EN2 (Pin 10) | Output enable control | Drives all four output channels into high-impedance when low; open or high enables normal output operation. |
| OUTA–OUTD (Pins 11–14) | Digital output channels A–D | Push-pull CMOS outputs capable of ±4mA (5V), ±2mA (3.3V), or ±1mA (2.5V); default-high on VCC1 loss. |
| VCC2 (Pin 16) | Output-side power supply | Independent supply for output buffers; enables galvanic separation and level translation between input/output logic domains. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation Certification | 8000VPK per VDE 0884-17 and 5.7kVRMS per UL 1577 - eliminates need for external isolation barriers in IEC 61010-1 and IEC 62368-1 certified equipment. |
| High CMTI Performance | ±100kV/μs minimum - maintains signal integrity in high-di/dt environments such as SiC-based motor inverters and DC-DC converters. |
| Low-Power Operation | 1.7mA/channel at 1Mbps - extends battery life in portable medical devices and reduces heat generation in fanless industrial controllers. |
| Fail-Safe Output Default | Outputs go high upon VCC1 loss - ensures safe shutdown of downstream power stages in isolated gate driver applications. |
| Enable-Controlled Tri-State | Single EN2 pin disables all four outputs simultaneously - simplifies bus arbitration in multi-controller systems without additional logic. |
Applications
| Industrial Motor Control | Solar Inverter Feedback |
|---|---|
|
Use Scenario: Isolating PWM signals and fault feedback between MCU and three-phase IGBT/SiC gate drivers in variable-frequency drives. IC Role / Device Role / Timing Role: Quad-channel isolator providing independent, low-skew (2.5ns tsk(o)) signal paths for gate drive enable, PWM, current sense fault, and temperature warning lines. Use Value: Enables compact, high-reliability isolation without external level shifters or discrete optocouplers, reducing BOM count and PCB area. |
Use Scenario: Transmitting isolated voltage and current measurement data from DC-link sensors to controller in string inverters. IC Role / Device Role / Timing Role: Forward-only digital isolator conveying ADC SPI clock/data and overvoltage alarm signals across reinforced barrier. Use Value: Meets 8000VPK reinforced isolation requirement for PV system grounding schemes while supporting 100Mbps sampling rates. |
| Medical Imaging Power Supply | Hybrid Electric Vehicle Onboard Charger |
|
Use Scenario: Isolating control signals between low-voltage FPGA and high-voltage X-ray generator power stage. IC Role / Device Role / Timing Role: Reinforced isolator delivering gate enable, soft-start, and overcurrent trip signals with <11ns propagation delay and ±100kV/μs noise rejection. Use Value: Achieves IEC 60601-1 patient isolation compliance while maintaining precise timing for high-frequency resonant LLC control. |
Use Scenario: Isolating bidirectional communication and fault reporting between AC/DC PFC controller and DC/DC secondary-side supervisor in OBC units. IC Role / Device Role / Timing Role: Dual-supply isolator translating 3.3V MCU logic to 5V analog monitoring circuits while maintaining reinforced barrier integrity. Use Value: Supports ASIL-B functional safety requirements via certified 40-year barrier lifetime and system-level surge immunity up to 12.8kV. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel reinforced digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2400ARWZ | 5000VRMS reinforced isolation (UL 1577), 25Mbps max rate, 16-pin SOIC-W, no enable pin, default-output not specified | Limited to lower-voltage industrial systems; insufficient for 1000VRMS solar or EV applications requiring 8000VPK | Select ISO7840DW where higher isolation voltage, speed, or enable functionality is required. |
| SI8640BB-B-IS | 5000VRMS reinforced (UL 1577), 150Mbps, 16-pin SOIC-W, no enable pin, default-low output on power loss | Higher speed but lacks fail-safe default-high behavior critical for gate driver safety shutdown sequences | Choose ISO7840DW when deterministic high-default behavior and VDE 0884-17 certification are mandatory. |
Compared with ADUM2400ARWZ and SI8640BB-B-IS, ISO7840DW uniquely combines 8000VPK VDE-certified reinforced isolation, 100Mbps speed, enable-controlled tri-state, and fail-safe default-high outputs-making it optimal for safety-critical, high-voltage industrial and automotive power systems.
Availability
ISO7840DW is available at Aetrix Electronics and suitable for industrial motor control, solar inverter feedback, and hybrid electric vehicle onboard charger designs requiring stable component supply, long-lifecycle assurance, and certified reinforced isolation.
Supply support for ISO7840DW 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 components for industrial, automotive, and medical markets.
The ISO7840x family was designed specifically for high-noise, high-voltage isolation applications demanding VDE 0884-17 reinforced certification, ultra-high CMTI, and long-term reliability in mission-critical power systems.
FAQ
What is the maximum signaling rate supported by ISO7840DW?
The ISO7840DW supports a maximum signaling rate of 100Mbps across all four channels under recommended operating conditions (VCC = 5V, TA = 25°C, CL = 15pF). This is confirmed in Section 5.15 of the datasheet and enables use in high-speed isolated SPI, UART, and PWM applications without timing degradation.
Does ISO7840DW provide reinforced isolation, and what certifications does it hold?
Yes, ISO7840DW provides 8000VPK reinforced isolation certified to DIN EN IEC 60747-17 (VDE 0884-17), UL 1577 (5.7kVRMS for 1 minute), IEC 61010-1, IEC 62368-1, IEC 60601-1, and GB 4943.1 - making it suitable for safety-critical medical and industrial equipment.
What is the default output state of ISO7840DW when input power is lost?
When VCC1 (input-side supply) drops below 1.7V, the ISO7840DW outputs transition to a high state after a delay of 0.2–9μs (tfs). This fail-safe default-high behavior is explicitly defined in the device description and ensures safe shutdown of downstream power stages in gate driver applications.
How does the EN2 pin function on ISO7840DW?
The EN2 pin (Pin 10) controls the output enable state of all four channels: when EN2 is high or floating, outputs operate normally; when EN2 is pulled low, all outputs enter high-impedance mode. This feature simplifies bus sharing in multi-controller systems and reduces quiescent current during idle periods.
What package type is used for ISO7840DW, and what are its key mechanical dimensions?
ISO7840DW uses a 16-pin wide-body SOIC (DW) package with nominal dimensions of 10.30mm × 10.30mm (including leads) and a body width of 7.50mm. It provides >8.15mm creepage and clearance, meeting reinforced insulation requirements for high-voltage PCB layouts.
ISO7840DW 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:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5700Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 16ns, 16ns
- Pulse Width Distortion (Max):
- 4.1ns
- Rise / Fall Time (Typ):
- 1.7ns, 1.9ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ISO7840DW FAQ
1.How can I place an order for ISO7840DW through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7840DW 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 ISO7840DW reliable?
The price and inventory of ISO7840DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7840DW is usually 5 days.
3.What payment methods are accepted for ISO7840DW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7840DW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7840DW?
ISO7840DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7840DW 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 ISO7840DW?
For technical support, including ISO7840DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7840DW requirements.
6.How does Aetrix verify that ISO7840DW is sourced from the original manufacturer or authorized distributors?
All ISO7840DW 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 ISO7840DW meets industry standards.
7.What is the process for return or replacement of ISO7840DW?
All ISO7840DW units undergo pre-shipment inspection (PSI). If there is an issue with ISO7840DW, 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 ISO7840DW part is unused and in its original packaging.
Return procedure for ISO7840DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7840DW Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
