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Texas Instruments ISO6742DWR — Digital Isolators

TI ISO6742DWR digital isolator, 4-ch, 50Mbps, 5000Vrms

MPNISO6742DWR
End of Life

Texas Instruments ISO6742DWR, series ISO674x, quad-channel digital isolator, capacitive coupling, 50Mbps data rate, 5000Vrms isolation, 2.25V to 5.5V supply, -40°C to 125°C, 16-SOIC package.

$2.61Ref. price · indicative, final on quote
Texas Instruments ISO6742DWR datasheet (PDF)
Packaging16-SOIC (0.295", 7.50mm Width)
RoHSNot applicable
SeriesISO674x
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ISO6742DWR specifications
ParameterValue
TypeCAN, RS232, RS485, SPI
SeriesISO674x
Channel typeUnidirectional
MountingSurface Mount
Voltage2.25V ~ 5.5V
Voltage - isolation5000Vrms
Isolated powerNo
Operating temperature-40°C ~ 125°C
Pulse width distortion7ns
PackageTape & Reel (TR); Cut Tape (CT)
Data rate50Mbps
TechnologyCapacitive Coupling
Case16-SOIC (0.295\", 7.50mm Width)
Channels4
Inputs - side 1/Side 22/2
Rise (Fall time)2.6ns, 2.6ns
Propagation delay tpLH (tpHL)18ns, 18ns
Common mode transient immunity100kV/µs

Product details

Quad-channel digital isolator for noisy bus isolation

It handles data rates up to 50Mbps, making it suitable for SPI, CAN, RS-485, and RS-232 links that need galvanic isolation in motor drives, grid-tied inverters, and industrial fieldbus nodes. The 2/2 input-to-output split (two channels each direction) matches common SPI (SCLK/MOSI in, MISO/CS out) and CAN (Tx/Rx each way) signal patterns without wasting channels.

Maximum propagation delay of 18 ns in each direction, with pulse-width distortion capped at 7 ns.

Housed in a 16-SOIC wide-body (7.50 mm width) package, surface-mount.

Frequently asked questions

What is the equivalent part for ISO6742DWR?

The ISO6742FDWR is a functional equivalent — same channel count, data rate, isolation rating, and package. The ISO6742FQDWRQ1 adds AEC-Q100 automotive qualification. Both are pin-compatible drop-in alternatives.

Is ISO6742DWR compatible with 2.5V logic?

Yes, the supply range of 2.25V to 5.5V covers 2.5V, 3.3V, and 5V logic levels on either side. No external level translation is needed.

What are the typical applications for ISO6742DWR?

It is used for galvanic isolation in SPI, CAN, RS-485, and RS-232 links in motor drives, grid-tied inverters, industrial fieldbus nodes, and medical equipment requiring reinforced isolation.

Does ISO6742DWR require an external isolated power supply?

Yes, the part does not include an isolated DC-DC converter. Each side of the isolation barrier needs its own supply rail within the 2.25V to 5.5V range.