ISO7763FDWR - 6-Channel Digital Isolator, 5kVrms, 100Mbps | TI
MPN: ISO7763FDWR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.92 | $3.92 |
| 10 | $3.53 | $35.30 |
| 100 | $3.13 | $313.00 |
| 500 | $2.81 | $1,405.00 |
| 1,000 | $2.5 | $2,500.00 |
ISO7763FDWR Overview
A digital isolator is a semiconductor device that transfers logic signals between two voltage domains while providing galvanic isolation (no direct current path) up to several kVrms. Digital isolators sit in the signal-chain hierarchy between the sensor/MCU domain and the field-side high-voltage domain, replacing optocouplers with faster edge rates, lower propagation delay, lower dynamic power consumption, and longer operational life. Within the broader taxonomy, ISO7763FDWR is a digital isolator > reinforced isolator > capacitive-isolation isolator > UL 1577 / VDE 0884-11 compliant device > interface IC.
Key features include 100 Mbps signaling across all six channels (NRZ), typical propagation delay of 11 ns (5 ns max skew between channels), 1.5 ns pulse-width distortion, and a wide 2.25 V to 5.5 V supply range on each side with level-shifting capability between mismatched rails. The 85 kV/us CMTI prevents data corruption in noisy motor-drive and switching-converter environments, and the 5000 Vrms rating per UL 1577 plus 800 Vpeak working voltage per VDE 0884-11 enable use in 230 V / 400 V industrial systems. An integrated refresh circuit keeps output state stable during missing input edges.
Typical applications include isolated SPI / UART / GPIO interfaces in PLCs, isolated gate-drive signal paths for IGBT/MOSFET half-bridges, isolated data acquisition between ADC and MCU, industrial fieldbus (RS-485, CAN, Modbus) isolation, and solar / EV traction inverter gate drivers. The wide-body SOIC provides the creepage and clearance required by end-product safety standards such as IEC 61800-5-1 (adjustable-speed drives) and IEC 61010-1 (measurement equipment).
When designing with the ISO7763FDWR, place 0.1 uF decoupling capacitors close to both VCC1 and VCC2 pins, and route the two ground returns (GND1, GND2) as separate planes connected only at the isolator. Avoid placing the device near switching-node edges that exceed its 85 kV/us CMTI margin.
This page synthesizes distributor stock, parametric drop-in alternatives, and EMC layout notes not found in the manufacturer datasheet alone, giving the design engineer a single decision-grade reference.
Drop-in alternatives for ISO7763FDWR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ISO7763FDWR (same form factor and footprint) — differing in Package, Maximum Data Rate, Channel Direction, Common-Mode Transient Immunity (CMTI), Isolation Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ISO7763FDW
✅ Drop-In📋 Reference alternative (not in catalog)
ISO7763FQDWQ1
✅ Drop-In📋 Reference alternative (not in catalog)
ISO7763DWR
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →ISO7763QDWRQ1
✅ Drop-In📋 Reference alternative (not in catalog)
ISO7761DWR
✅ Drop-In📋 Reference alternative (not in catalog)
ISO7763FDWR Specifications
| Isolation Type | Capacitive (SiO2) Reinforced |
| Number of Channels | 6 |
| Channel Directionality | 3 forward / 3 reverse (3/3) |
| Data Rate (max) | 100 Mbps |
| Isolation Rating (DW package) | 5000 Vrms (per UL 1577) |
| Working Voltage | 800 Vpeak (per VDE V 0884-11) |
| Common-Mode Transient Immunity (CMTI) | 85 kV/us (typical) |
| Propagation Delay (typical) | 11 ns |
| Pulse-Width Distortion | 1.5 ns (max) |
| Channel-to-Channel Skew | 5 ns (max) |
| Supply Voltage (each side) | 2.25 V to 5.5 V |
| Default Output State | High (F suffix) |
| Operating Temperature Range | -55 C to +125 C |
| Package | 16-pin SOIC wide-body (DW) 7.50 mm |
| RoHS Status | Compliant |
| Safety Certifications | UL 1577, VDE V 0884-11, CSA, CQC |
| MSL Level | 2 (per JEDEC J-STD-020) |
ISO7763FDWR Pin Configuration
| Pin 1 | VCC1 — Side 1 power supply, 2.25 V to 5.5 V |
| Pin 2 | GND1 — Side 1 ground return |
| Pin 3 | INA — Forward input channel A (side 1 -> side 2) |
| Pin 4 | INB — Forward input channel B (side 1 -> side 2) |
| Pin 5 | INC — Forward input channel C (side 1 -> side 2) |
| Pin 6 | OUTD — Reverse output channel D (side 2 -> side 1) |
| Pin 7 | EN — Output enable, active high (per datasheet convention) |
| Pin 8 | GND2 — Side 2 ground return |
| Pin 9 | VCC2 — Side 2 power supply, 2.25 V to 5.5 V |
| Pin 10 | OUTA — Forward output channel A (side 1 -> side 2) |
| Pin 11 | OUTB — Forward output channel B (side 1 -> side 2) |
| Pin 12 | OUTC — Forward output channel C (side 1 -> side 2) |
| Pin 13 | IND — Reverse input channel D (side 2 -> side 1) |
| Pin 14 | INE — Reverse input channel E (side 2 -> side 1) |
| Pin 15 | INF — Reverse input channel F (side 2 -> side 1) |
| Pin 16 | NC — Not connected (per datasheet) |
Typical Applications
ISO7763FDWR is suitable for 6 applications: Isolated SPI / UART Interface for PLCs, Isolated Gate-Drive Signal Path for IGBT / SiC Inverters, Industrial Fieldbus (RS-485, CAN, Modbus) Isolation, Solar / Photovoltaic String Inverter Communications, Battery Management System (BMS) Isolation, Medical Equipment Patient-Isolation Barrier.
Isolated SPI / UART Interface for PLCs
The ISO7763FDWR's six channels in a 3 forward / 3 reverse arrangement map directly onto full-duplex SPI (MOSI, MISO, SCLK, CS) plus two handshaking lines, all within one package. With 100 Mbps data rate and 11 ns typical propagation delay the part carries SPI clock frequencies up to 50 MHz with deterministic timing, while the 5000 Vrms isolation per UL 1577 protects the low-voltage PLC backplane from field-side transients on 230 V / 400 V industrial lines. Compared to optocouplers, the integrated capacitive isolation reduces board area by ~60 percent and eliminates the LED-degradation failure mode. Pair with an ISO7762FDWR where a fourth forward channel is needed; the shared 16-pin DW footprint simplifies layout reuse.
Recommended
Isolated Gate-Drive Signal Path for IGBT / SiC Inverters
In three-phase motor drives and traction inverters the ISO7763FDWR carries three gate-emitter-on signals and three desaturation-feedback signals between the low-voltage controller and the high-side gate drivers, with 85 kV/us CMTI guaranteeing logic integrity during the multi-kV/us dv/dt transitions of the IGBT or SiC switching node. The 800 Vpeak working voltage per VDE 0884-11 supports 400 V and 690 V DC-link designs without violating reinforced-insulation creepage. Typical propagation delay of 11 ns and channel-to-channel skew of 5 ns maximum keep the three-phase timing matched within the miller-plateau requirements of SiC MOSFETs. For dual-channel versions use ISO7721FDWR; for full three-phase plus brake signal use ISO7763FDWR in its native 3/3 configuration.
Recommended
Industrial Fieldbus (RS-485, CAN, Modbus) Isolation
Isolating RS-485 and CAN transceivers from their host MCU is a standard requirement in factory automation and process-control equipment, and the ISO7763FDWR provides the three-wire differential-pair plus ground-enable signaling in a single 16-pin DW device. The 5000 Vrms reinforced rating meets the surge-withstand requirements of IEC 61800-3 for adjustable-speed drives, while the 2.25-5.5 V supply range on each side lets a 3.3 V MCU talk to a 5 V transceiver without a level shifter. CMTI of 85 kV/us prevents bit errors during ESD and fast-transient events specified by IEC 61000-4-2 and IEC 61000-4-4. For CAN FD with higher bit rates use ISO7763FDWR at full 100 Mbps; for legacy 1 Mbps CAN the same part fits with margin.
Recommended
Solar / Photovoltaic String Inverter Communications
String inverters operating at 600 V to 1500 V DC-link require reinforced isolation between the MPPT power stage and the communications board, and the ISO7763FDWR's 5000 Vrms UL 1577 plus 800 Vpeak VDE 0884-11 working voltage clear those margins comfortably. Six channels carry SPI between the digital signal controller and the gate-driver board, plus RS-485 handshaking to the monitoring interface. The 100 Mbps data rate supports modern SiC-based MPPT switching frequencies up to 100 kHz while the 85 kV/us CMTI tolerates the inverter's high dv/dt edges. Operating temperature of -55 to +125 C covers outdoor enclosure requirements without derating.
Recommended
Battery Management System (BMS) Isolation
In electric-vehicle and grid-storage battery packs the ISO7763FDWR isolates the high-voltage cell-monitoring front end from the low-voltage vehicle/pack controller, where 5000 Vrms reinforced insulation is mandatory per IEC 62638 and similar functional-safety standards. The 3/3 channel directionality maps onto SPI plus an enable line and a fault-feedback signal between the AFE and the MCU, while the 2.25-5.5 V dual-supply range lets the AFE run at 3.3 V and the controller at 5 V without external translation. Automotive projects should select the Q1 variant ISO7763FQDWQ1 for AEC-Q100 qualification; the industrial-grade ISO7763FDWR remains a drop-in for stationary storage and 48 V mild-hybrid designs.
Recommended
Medical Equipment Patient-Isolation Barrier
Patient-connected medical devices per IEC 60601-1 require reinforced isolation between applied parts and the host electronics, and the ISO7763FDWR's 5000 Vrms rating plus VDE 0884-11 certification provides the basic-insulation / reinforced-insulation margin needed for 250 V working voltage. The 100 Mbps data rate supports modern medical-imaging data links, while 85 kV/us CMTI rejects the switching noise of nearby AC-DC converters. Six channels in 3/3 directionality fit isolated SPI to a display controller and isolated UART to the patient-side sensors in a single 16-pin DW package. For patient-monitoring ECG/EEG front ends the default-high (F) output state prevents output chatter during missing input edges during power-up.
Recommended
Recommended Products Summary
Engineering reference data for ISO7763FDWR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ISO7763FDW | ISO7763FQDWQ1 | ISO7763DWR | ISO7763QDWRQ1 | ISO7761DWR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 16-pin SOIC wide-body (DW) | 16-pin SOIC wide-body (DW) - same | 16-pin SOIC wide-body (DW) - same | 16-pin SOIC wide-body (DW) - same | 16-pin SOIC wide-body (DW) - same | 16-pin SOIC wide-body (DW) - same |
| Channels | 6 (3 forward / 3 reverse) | 6 (3/3) | 6 (3/3) | 6 (3/3) | 6 (3/3) | 5 (5/0) |
| Data Rate (max) | 100 Mbps | 100 Mbps | 100 Mbps | 100 Mbps | 100 Mbps | 100 Mbps |
| Isolation Voltage (UL 1577) | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms |
| CMTI | 85 kV/us (typ) | 85 kV/us (typ) | 85 kV/us (typ) | 85 kV/us (typ) | 85 kV/us (typ) | 85 kV/us (typ) |
| Default Output State | High (F suffix) | High | High | Low (no F) | Low | High |
| Automotive Grade (AEC-Q100) | No | No | Yes | No | Yes | No |
| Operating Temperature Range | -55 C to +125 C | -55 C to +125 C | -55 C to +125 C | -55 C to +125 C | -55 C to +125 C | -55 C to +125 C |
| Approx. Unit Price (USD, as of 2026-10-08) | 3.92 | 3.92 | 4.20 | 3.92 | 4.20 | 3.50 |
Key Differentiators
- Reinforced 5000 Vrms isolation in wide-body SOIC (vs ISO7761DWR)
- Balanced 3 forward / 3 reverse channel directionality (vs ISO7762FDWR (4/2))
- Default-high outputs protect downstream devices during power-up (vs ISO7763DWR (default-low))
- 100 Mbps data rate with deterministic propagation (vs Optocouplers (e.g., HCPL-2212-500E))
Design Notes
Place 0.1 uF decoupling capacitors as close as possible (within 2 mm) to both VCC1 (pin 1) and VCC2 (pin 9). Use a second 1 uF to 10 uF bulk capacitor on each supply rail. Keep GND1 and GND2 as separate reference planes that connect only at the isolator's GND pins; do not allow high-current switching return currents to cross the isolation barrier. Estimated: trace inductance of a 5 mm PCB trace is approximately 5 nH, which combined with the 1 uF cap gives a 1.6 MHz self-resonant decoupling cutoff, adequate to suppress the VCC bounce caused by 100 Mbps output switching.
Maintain a minimum 8 mm of creepage clearance between side 1 (GND1, VCC1, INx) and side 2 (GND2, VCC2, OUTx) copper pours on the same PCB layer, per UL 1577 and VDE 0884-11. Avoid placing signal traces under the device body, since the 16-pin DW package provides the clearance required by safety standards through the wide-body mold compound. Reference designators and silk-screen markings should remain within their respective side-1 / side-2 copper zones to preserve insulation separation.
Do not assume the 3/3 channel directionality means any pin assignment; the manufacturer datasheet defines INA/INB/INC as side-1-to-side-2 forward inputs and OUTA/OUTB/OUTC as side-2 outputs, with reverse channels in the opposite direction. Mixing these in firmware or schematic capture produces non-functional isolation. Also verify the F-suffix part is required for default-high outputs; selecting the non-F variant (ISO7763DWR) silently changes system behavior during power-up when input edges are missing.
Route the differential pairs (SPI CLK/MOSI, RS-485 A/B, CAN H/L) as 100-ohm differential microstrip with continuous reference plane on the layer below. Place the ISO7763FDWR close to the connector to minimize common-mode antenna loops, and add a 100 MHz ferrite bead on each side's VCC supply near the device. The 85 kV/us CMTI rating covers the typical dv/dt of motor-drive and SiC inverter switching nodes, but exceeding this margin with unshielded cabling can produce bit errors - keep high-dv/dt traces at least 10 mm away from the isolation barrier side-to-side signal traces.
Compliance Information
UL 1577 recognized (5000 Vrms reinforced), VDE V 0884-11 certified (800 Vpeak working voltage), CSA and CQC certified. RoHS / REACH compliant per TI product page. AEC-Q100 qualification requires the Q1 variant ISO7763FQDWQ1.
