ISO6763 - 6-Ch Reinforced Digital Isolator 50Mbps | Texas Instruments
MPN： ISO6763 ✓ 啟用中ISO6763 概覽
A digital isolator is an interface IC that transfers digital signals across a galvanic isolation barrier while blocking high voltages, isolating ground potentials, and preventing noise coupling. Within the signal-chain hierarchy, digital isolators belong to the interface IC family and are essential building blocks in industrial data buses, isolated power supplies, and motor-drive gate-drive isolation systems.
Key features include six isolation channels in a 3/3 configuration, 50 Mbps signaling for high-speed SPI and parallel interfaces, and reinforced 5000 Vrms isolation rating for safety-critical designs. The ISO6763 belongs to the ISO676x family (ISO6760, ISO6761, ISO6762, ISO6763, datasheet SLLSFK0E, August 2021, revised February 2023), which shares silicon-on-insulator-based capacitive isolation technology with the proven ISO77xx generation.
The device uses TI's latest generation of capacitive isolation architecture with on-chip transformers implemented as SiO2 capacitors, delivering robust EMC performance with high CMTI. Low propagation delay and low channel-to-channel skew make it well suited for clocked interfaces. Wide-side supply support down to 1.8 V allows direct interfacing with modern low-voltage MCUs and FPGAs without level shifting.
Typical applications include RS-485 and CAN bus isolation, isolated SPI for ADCs and DACs, industrial PLC I/O modules, and motor-control signal isolation connecting MCUs to gate drivers. The automotive-grade ISO6763FQDWRQ1 variant extends usage to vehicle systems requiring AEC-Q100 qualification.
When designing, place 0.1 uF bypass capacitors close to both VCC1 and VCC2 pins and route signals across the barrier with generous creepage clearance; unused inputs should be tied to a defined logic level to prevent floating-channel oscillation.
直接替換替代品，適用於 ISO6763 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ISO6763 （相同外形與佔位） — 差異在於 Package, CMTI, Maximum Data Rate, Common-Mode Transient Immunity, Number of Channels.
ISO6763FQDWRQ1
✅ 直接替換聯絡詢價
查看資料表 →ISO7763DWR
✅ 直接替換聯絡詢價
查看資料表 →ISO6762DWR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ISO6760DWR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →SI8663BB-B-IS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADuM261N1BRZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ISO6763 規格
| Number of Channels | 6 (3/3 direction) |
| Max Data Rate | 50 Mbps |
| Isolation Rating | 5000 Vrms |
| CMTI | 50 kV/us |
| Supply Voltage Range (Side 1) | 1.8 V to 5.5 V |
| Supply Voltage Range (Side 2) | 1.8 V to 5.5 V |
| Logic Level Support | 1.8 V, 2.5 V, 3.3 V, 5 V |
| Isolation Technology | Capacitive (SiO2, SOI-based) |
| Supported Interfaces | CAN, RS232, RS485, SPI |
| 封裝 | 16-SOIC (DW, 7.50 mm width) |
| 安裝類型 | Surface Mount |
| Automotive Grade Variant | ISO6763FQDWRQ1 (AEC-Q100) |
| RoHS 狀態 | Compliant |
| Family Datasheet | SLLSFK0E (Aug 2021, rev Feb 2023) |
ISO6763 16-soic (dw, 7.50 mm width) 腳位配置指南
ISO6763（16-soic (dw, 7.50 mm width) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： ISO6763.
請參閱 資料表 以查看完整腳位配置。
典型應用
ISO6763 適用於 6 應用s: Isolated RS-485 Bus Nodes, CAN Bus Isolation, Isolated SPI for ADCs and DACs, Motor Drive Gate-Drive Signal Isolation, PLC I/O Modules, Automotive Body and Powertrain Isolation.
Isolated RS-485 Bus Nodes
The ISO6763 isolates the UART/control lines feeding RS-485 transceivers in industrial fieldbus nodes. Its 50 Mbps rate comfortably exceeds 20 Mbps profiling needs, and 50 kV/us CMTI sustains signaling through large ground-potential transients common on long factory floors. Six channels in 3/3 direction allow full TX/RX plus direction-control and fault signaling across one device, replacing multiple dual-channel isolators and cutting BOM count and board area.
推薦
CAN Bus Isolation
For isolated CAN and CAN FD nodes, the ISO6763 isolates TX, RX, and standby/control signals between the MCU and CAN transceiver. Its 5000 Vrms reinforced isolation supports safety separation in industrial and automotive gateways, while 50 kV/us CMTI keeps the bus stable under load-dump and ground-shift events. The 1.8 V logic support lets it sit directly beside modern low-voltage MCUs without level translators.
推薦
Isolated SPI for ADCs and DACs
The ISO6763's 50 Mbps data rate supports high-throughput isolated SPI links to precision data converters. Three channels in each direction carry SCLK, MOSI/CS and MISO/DRDY signals with low channel-to-channel skew across the barrier. 1.8 V to 5 V supply support on both sides allows direct connection to low-voltage converters and 5 V industrial logic. The capacitive isolation adds no switching noise into sensitive analog domains.
推薦
Motor Drive Gate-Drive Signal Isolation
In motor inverters, the ISO6763 isolates PWM and fault/enable signals between the MCU controller domain and IGBT/SiC gate-driver domain. The 50 kV/us CMTI is essential where high dv/dt switching edges would corrupt ordinary optocouplers, and 5000 Vrms reinforced rating supports the safety separation between low-voltage control and high-voltage power stages. Low propagation delay preserves PWM dead-time accuracy for efficient switching.
推薦
PLC I/O Modules
Programmable logic controller I/O cards use the ISO6763 to isolate digital input/output banks from the backplane logic. Six channels per device consolidate isolation for dense I/O boards, reducing component count versus dual-channel parts. Reinforced 5000 Vrms isolation addresses field-wiring surge exposure, and robust EMC performance helps meet industrial immunity requirements in electrically noisy cabinets.
推薦
Automotive Body and Powertrain Isolation
For vehicle ECUs linking 3.3 V/5 V domains across battery-domain boundaries, the AEC-Q100 qualified ISO6763FQDWRQ1 variant provides identical 3/3-channel, 50 Mbps, 5000 Vrms isolation with automotive qualification. It suits onboard charger communication, isolated sensor interfaces, and domain gateway links. The shared package with the standard ISO6763 lets one PCB layout serve both industrial and automotive end items.
推薦
推薦產品摘要
工程參考資料，適用於 ISO6763 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ISO6763FQDWRQ1 | ISO7763DWR | SI8663BB-B-IS | ADuM261N1BRZ |
|---|---|---|---|---|---|
| Package | 16-SOIC (DW, 7.50 mm) | 16-SOIC (DW) - same | 16-SOIC (DW) - same | 16-SOIC - same footprint class | 16-SOIC - same footprint class |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Skyworks Solutions | Analog Devices |
| Channels | 6 (3/3) | 6 (3/3) | 6 (3/3) | 6 (3/3) | 6 (3/3) |
| Automotive Grade | No (standard ISO6763) | Yes (AEC-Q100) | Q1 option available | No | No |
主要差異化特點
- Latest-generation reinforced EMC isolator (對比ISO7763DWR)
- Direct automotive path with same footprint (對比ISO6763FQDWRQ1)
- 1.8 V logic support on both sides (對比ADuM261N1BRZ)
設計說明
Place 0.1 uF ceramic bypass capacitors within 2 mm of both VCC1 and VCC2 pins, each referenced to its own side ground. Maintain the isolation barrier as a continuous board slot or gap; route all six signals perpendicular to the barrier to preserve creepage and minimize inter-channel coupling across the isolation boundary.
Tie unused channel inputs to a defined logic level (VCC or GND of that side). Floating inputs on capacitive isolators can oscillate and inject noise into adjacent channels. Also confirm default output states on power-up: if the other side is unpowered, outputs default low, which matters for fail-safe behavior in RS-485 direction control and gate-drive enable lines.
At 50 Mbps, use series termination (22 to 33 ohm) on high-speed channels near the driving side to control ringing, and keep traces on each side short with solid ground references. The isolator's low channel-to-channel skew suits clocked SPI; minimize asymmetric trace lengths between clock and data lines to preserve setup/hold margins at the receiver.
合規資訊
RoHS compliant per DigiKey listing for ISO6763DWR. AEC-Q100 qualification applies only to ISO6763FQDWRQ1 variant. Detailed REACH/halogen status: see TI quality portal.
