ISO7760FDBQR - 6-Ch 100Mbps Digital Isolator, 3kV | TI
MPN: ISO7760FDBQR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.82 | $1.82 |
| 10 | $1.64 | $16.40 |
| 100 | $1.36 | $136.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.02 | $1,020.00 |
| 2,500 | $0.89 | $2,225.00 |
ISO7760FDBQR Overview
What is a digital isolator? A digital isolator is a semiconductor device that transmits binary signals across an electrical isolation barrier using capacitive or inductive coupling rather than optocouplers. Digital isolators sit within the interface IC category (digital isolator -> isolator -> interface IC -> integrated circuit) and are essential for breaking ground loops, protecting low-voltage logic from high-voltage transients, and meeting safety standards such as UL 1577, IEC 60747-17, and reinforced insulation requirements. Compared with optocouplers, CMOS-based digital isolators offer higher speed, lower power, better CMTI, and tighter channel-to-channel matching.
Key features of the ISO7760FDBQR include robust EMC performance, up to 5000 Vrms isolation on the SOIC-DW variant, 12.8 kV surge capability, >30-year projected lifetime at rated working voltage, ±100 kV/µs typical common-mode transient immunity, and level translation across 2.25 V to 5.5 V on either side. Default output is high when input is open, which simplifies fail-safe system design. The device integrates a SiO2-based isolation barrier supporting reinforced insulation per VDE 0884-11 / IEC 60747-17.
The architecture uses TI's proprietary CMOS capacitive coupling with on-off keying (OOK) modulation and a differential receiver, which provides excellent immunity to common-mode noise and stable propagation delay (~10.7 ns typical) across temperature. Integrated fail-safe logic and under-voltage lockout on both rails prevent bus chatter during power-up and power-down sequencing.
Typical applications include industrial fieldbus isolation (RS-485, CAN, SPI), motor-drive gate-driver signal isolation, solar inverter power-stage communication, medical equipment patient-isolation interfaces, and battery management systems (BMS) where reinforced isolation is mandated by safety standards. The wide supply range simplifies level shifting between 3.3 V MCUs and 5 V transceivers without external level translators.
When designing with the ISO7760FDBQR, place 0.1 µF bypass capacitors close to each VCC pin on both sides of the barrier. The exposed pad (DBQ package) should be soldered to a copper pour to reduce thermal resistance and improve surge performance.
This page synthesizes distributor pricing, drop-in same-package alternatives, and EMC layout guidance not found on a single supplier page.
Drop-in alternatives for ISO7760FDBQR — 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 ISO7760FDBQR (same form factor and footprint) — differing in Number of Channels, Package, Common-Mode Transient Immunity (CMTI), MSL Level, Channel Configuration.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ISO7760DBQR
✅ Drop-In📋 Reference alternative (not in catalog)
ISO7760FDBQ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ISO7761FDBQR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ISO7762FDBQR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.88 / Unit
View Datasheet →ISO7742DBQR
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →ISO7760FDBQR Specifications
| Isolation Type | Capacitive Coupling (Reinforced) |
| Number of Channels | 6 (6 forward / 0 reverse) |
| Channel Configuration | 6/0 |
| Data Rate | 100 Mbps |
| Isolation Voltage (DBQ package) | 3000 Vrms |
| Isolation Voltage (DW package, family max) | 5000 Vrms |
| Surge Capability | Up to 12.8 kV |
| Common-Mode Transient Immunity (CMTI) | ±100 kV/µs typical |
| Supply Voltage Range (each side) | 2.25 V to 5.5 V |
| Propagation Delay (typical) | 10.7 ns |
| Default Output (input open) | High |
| Operating Temperature Range | -55°C to +125°C |
| Package | 16-pin SSOP (DBQ), 0.154" (3.90 mm) width |
| Mounting Type | Surface Mount |
| MSL Level | 2 (260°C, 1 year floor life) |
| RoHS Status | Compliant |
| Safety Certification (family) | UL 1577, VDE 0884-11 / IEC 60747-17 reinforced |
ISO7760FDBQR Pin Configuration
| Pin 1 | VDD1 — Power supply, side 1 (2.25 V to 5.5 V) |
| Pin 2 | GND1 — Ground reference for side 1 |
| Pin 3 | INA — Input, channel A (side 1) |
| Pin 4 | OUTA — Output, channel A (side 2) |
| Pin 5 | OUTB — Output, channel B (side 2) |
| Pin 6 | INB — Input, channel B (side 1) |
| Pin 7 | INC — Input, channel C (side 1) |
| Pin 8 | OUTC — Output, channel C (side 2) |
| Pin 9 | GND2 — Ground reference for side 2 |
| Pin 10 | VDD2 — Power supply, side 2 (2.25 V to 5.5 V) |
| Pin 11 | OUTD — Output, channel D (side 2) |
| Pin 12 | IND — Input, channel D (side 1) |
| Pin 13 | INE — Input, channel E (side 1) |
| Pin 14 | OUTE — Output, channel E (side 2) |
| Pin 15 | OUTF — Output, channel F (side 2) |
| Pin 16 | INF — Input, channel F (side 1) |
Typical Applications
ISO7760FDBQR is suitable for 6 applications: Industrial Fieldbus Isolation (RS-485 / CAN / SPI), Motor Drive Gate-Driver Signal Isolation, Solar Inverter Communication Interface, Medical Equipment Patient Isolation, Battery Management System (BMS) Isolation, PLC and Industrial I/O Module Isolation.
Industrial Fieldbus Isolation (RS-485 / CAN / SPI)
The ISO7760FDBQR isolates industrial fieldbus nodes (RS-485, CAN FD, SPI) between a 3.3 V MCU and a 5 V bus transceiver. Its 100 Mbps data rate exceeds CAN FD (5 Mbps) and SPI (up to ~50 MHz) headroom; its ±100 kV/µs CMTI rejects the common-mode noise generated by long cable stubs and motor inverters on the bus side. The 3 kVrms reinforced isolation meets IEC 61800-5-1 and IEC 61131-2 industrial safety standards for equipment connected to high-voltage power stages. Six channels are sufficient to isolate TX, RX, RE/DE, and three GPIO control signals in a typical transceiver-isolator-MCU chain. Pair with SN65HVD75 (RS-485) or TCAN334 (CAN FD) transceivers.
Recommended
Motor Drive Gate-Driver Signal Isolation
In variable-frequency motor drives, the ISO7760FDBQR provides reinforced isolation between the low-voltage MCU/controller and the high-voltage gate-driver side of IGBT or SiC inverter modules. Its ±100 kV/µs CMTI prevents output glitches during the multi-kV/µs dV/dt switching transients of the power stage, and the 100 Mbps data rate supports high-resolution PWM frequencies up to several hundred kHz. Six channels are typically used for three upper PWM signals and three lower PWM signals of a 3-phase inverter. The 3 kVrms reinforced isolation satisfies IEC 61800-5-1 reinforced-insulation requirements for adjustable-speed drives. Connect VCC1 to the controller 3.3 V rail and VCC2 to the gate-driver isolated supply.
Recommended
Solar Inverter Communication Interface
The ISO7760FDBQR isolates communication links inside solar inverters, between the high-voltage DC-bus side and the low-voltage control/MCU side. Its 3000 Vrms reinforced isolation, 12.8 kV surge capability, and >30-year projected barrier life satisfy IEC 62109 safety requirements for photovoltaic power converters. Six channels handle SPI to the DC-DC converter controller plus three discrete feedback signals, or carry UART plus four GPIOs for a monitoring interface. The wide 2.25 V to 5.5 V supply on each side allows direct connection to 3.3 V MCUs and 5 V legacy interfaces without level shifters, simplifying BOM and PCB layout.
Recommended
Medical Equipment Patient Isolation
In medical equipment such as patient monitors, infusion pumps, and diagnostic instruments, the ISO7760FDBQR provides reinforced isolation between patient-connected circuits and operator-accessible circuitry. Its UL 1577 and VDE 0884-11 / IEC 60747-17 reinforced insulation certification, 3 kVrms withstand, and >30-year projected barrier life support IEC 60601-1 patient-isolation requirements. Six channels carry SPI to the analog front-end, UART to the display controller, and discrete interrupt/status signals. The wide supply range allows mixed 3.3 V and 5 V domains within the patient isolation barrier. Add a 0.1 µF bypass capacitor close to each VCC pin to maintain low EMI.
Recommended
Battery Management System (BMS) Isolation
In lithium-ion battery management systems, the ISO7760FDBQR isolates the high-voltage battery stack communication from the low-voltage vehicle/system controller. Its reinforced 3 kVrms withstand voltage and ±100 kV/µs CMTI survive the high dV/dt events typical of switching pre-charge and discharge FETs in the pack. Six channels carry SPI to the battery monitor IC (such as the BQ76952), UART to the system controller, and three discrete GPIO/interrupt signals. The -55°C to +125°C operating range covers automotive underhood and industrial battery-cabinet environments. AEC-Q100 variants exist for automotive BMS applications.
Recommended
PLC and Industrial I/O Module Isolation
In Programmable Logic Controller (PLC) analog and digital I/O modules, the ISO7760FDBQR provides reinforced isolation between field-side wiring (24 V industrial signals) and the backplane logic side. Its 3000 Vrms withstand, 12.8 kV surge capability, and UL 1577 / VDE 0884-11 certification meet IEC 61131-2 industrial control equipment safety standards. Six channels isolate a complete digital input word (8 bits with 2 spares) or carry SPI plus discrete I/O to an analog input ADC. Wide 2.25 V to 5.5 V supply range supports both 3.3 V backplane logic and 5 V field-side drivers. The 100 Mbps data rate ensures transparent transport of high-speed industrial protocols without added latency.
Recommended
Recommended Products Summary
Engineering reference data for ISO7760FDBQR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ISO7760DBQR | ISO7760FDBQ | ISO7761FDBQR | ISO7762FDBQR | ISO7742DBQR |
|---|---|---|---|---|---|---|
| Package | 16-SSOP (DBQ), 3.90 mm | 16-SSOP (DBQ) - same | 16-SSOP (DBQ) - same | 16-SSOP (DBQ) - same | 16-SSOP (DBQ) - same | 16-SSOP (DBQ) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Channel Configuration | 6/0 (6 forward, 0 reverse) | 6/0 - same | 6/0 - same | 5/1 | 4/2 | 4/2 |
| Isolation Grade (DBQ package) | Reinforced, 3000 Vrms | Basic, 3000 Vrms | Reinforced, 3000 Vrms | Reinforced, 3000 Vrms | Reinforced, 3000 Vrms | Basic, 3000 Vrms |
| Data Rate | 100 Mbps | 100 Mbps | 100 Mbps | 100 Mbps | 100 Mbps | 100 Mbps |
| CMTI (typical) | ±100 kV/µs | ±100 kV/µs | ±100 kV/µs | ±100 kV/µs | ±100 kV/µs | ±85 kV/µs typical |
| Supply Range (each side) | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V |
| Default Output (input open) | High | High | High | High | High | High |
| Operating Temperature | -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 |
| 1k-piece Price (USD, as of 2026-10-08) | 1.02 | 0.85 | 1.02 | 1.05 | 1.05 | 0.78 |
Key Differentiators
- Reinforced insulation in SSOP-16 (DBQ) compact package (vs ISO7760DBQR)
- Highest channel count (6/0) in 16-SSOP family (vs ISO7761FDBQR (5/1))
- ±100 kV/µs CMTI tolerates SiC/IGBT switching noise (vs ISO7742DBQR)
- Same SSOP-16 DBQ footprint as Site MPN ISO7742DBQR (vs ISO7742DBQR)
Design Notes
Place a 0.1 µF low-ESR ceramic bypass capacitor within 2 mm of each VDD pin (VDD1, VDD2). For high-speed designs above 50 Mbps, add a 1 µF bulk capacitor in parallel at each VDD pin to suppress switching transients caused by fast logic edges. According to the TI ISO776x datasheet, insufficient decoupling can cause output glitches or pulse-width distortion at high data rates. Both VDD1 and VDD2 can be powered independently across 2.25 V to 5.5 V, allowing level translation between 3.3 V and 5 V domains without external shifters.
Maintain a clearance of at least 4 mm between side-1 and side-2 copper pours to preserve the 3 kVrms isolation rating of the DBQ package. Avoid placing signal traces, vias, or copper under the package body between side-1 and side-2 pins - this degrades the isolation barrier and may violate UL 1577 spacing requirements. The TI datasheet layout example recommends keeping the entire PCB region under the IC free of copper between the two grounds. For higher isolation, choose the DW package variant with 8 mm body width.
The capacitive-coupling architecture of the ISO7760FDBQR emits minimal common-mode current compared to optocouplers, but high-speed edges (sub-2 ns rise time at 100 Mbps) can still radiate. Use a ground plane on each side of the isolation barrier and stitch the grounds with a small Y-capacitor (typically 1-10 pF, 2 kV rated) at the barrier to provide a return path for common-mode currents. Reference the TI ISO776x layout guide for via stitching patterns and Y-cap placement. Avoid running long parallel traces between side 1 and side 2 - cross only at the IC body.
For 100 Mbps operation, the ISO7760FDBQR exhibits ~10.7 ns typical propagation delay with sub-ns channel-to-channel skew. Match trace lengths within a single channel group (e.g., the SPI MOSI/MISO/SCLK/CS lines) to within 5 mm to avoid timing skew across channels. Place a 33 Ω series resistor at each output pin when driving long traces (>50 mm) or capacitive loads (>10 pF) to dampen reflections. The default-high output state on input-open simplifies fail-safe logic for industrial safety applications.
Do not connect side-1 and side-2 grounds together at any point other than through the isolation barrier - this defeats the isolation. Do not exceed 5.5 V on either VDD pin; reverse-voltage spikes below -0.3 V can latch-up the CMOS input structures. Avoid substituting parts with different channel directions (6/0 vs 5/1 vs 4/2) without re-checking pinout assignments - the FDBQ pinout differs from FDW. For automotive AEC-Q100 designs, choose ISO7760FQDWRQ1 instead of FDBQR; the standard FDBQR is not Q-100 qualified.
Compliance Information
RoHS compliant per TI product page. Reinforced insulation certified to UL 1577, VDE 0884-11 / IEC 60747-17 per ISO776x family datasheet. Not AEC-Q100 qualified - choose ISO7760FQDWRQ1 for automotive.
