Texas Instruments ISO674x series, quad-channel digital isolator, ISO6742FDWR, 50Mbps data rate, 5000Vrms isolation, capacitive coupling, 16-SOIC package.
| Parameter | Value |
|---|---|
| Type | CAN, RS232, RS485, SPI |
| Series | ISO674x |
| Channel type | Unidirectional |
| Mounting | Surface Mount |
| Voltage | 2.25V ~ 5.5V |
| Voltage - isolation | 5000Vrms |
| Isolated power | No |
| Operating temperature | -40°C ~ 125°C |
| Pulse width distortion | 7ns |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Data rate | 50Mbps |
| Technology | Capacitive Coupling |
| Case | 16-SOIC (0.295\", 7.50mm Width) |
| Channels | 4 |
| Inputs - side 1/Side 2 | 2/2 |
| Rise (Fall time) | 2.6ns, 2.6ns |
| Propagation delay tpLH (tpHL) | 18ns, 18ns |
| Common mode transient immunity | 100kV/µs |
The ISO6742FDWR: The device offers four unidirectional channels arranged as two inputs on side 1 and two inputs on side 2, matching the typical split of a half-duplex SPI bus (SCLK, MOSI on one side; MISO, CS on the other) or a CAN transceiver interface. Rise and fall times are matched at 2.6 ns typical, and the maximum pulse-width distortion is 7 ns — tight enough that the isolator does not eat into the bit-time budget at 50 Mbps.
Yes. With a 50 Mbps data rate, 2/2 channel split, and 18 ns propagation delay, the ISO6742FDWR directly supports SPI bus isolation at standard clock rates. The unidirectional channels map naturally to SCLK, MOSI, MISO, and chip-select lines.