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ISO7221MDG4

TI ISO7221MDG4 Digital Isolator, 150 Mbps, 2500 Vrms

MPNISO7221MDG4
End of Life

Texas Instruments ISO7221MDG4, dual-channel digital isolator, capacitive coupling, 150 Mbps data rate, 2500 Vrms isolation, 3V to 5.5V supply, -40°C to 125°C, 8-SOIC package.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ISO7221MDG4 specifications
ParameterValue
TypeGeneral Purpose
Channel typeUnidirectional
MountingSurface Mount
Voltage3V ~ 5.5V
Voltage - isolation2500Vrms
Isolated powerNo
Operating temperature-40°C~125°C
Pulse width distortion1ns
PackageTube
Data rate150Mbps
TechnologyCapacitive Coupling
Case8-SOIC (0.154\", 3.90mm Width)
Channels2
Inputs - side 1/Side 21/1
Rise (Fall time)1ns, 1ns
Propagation delay tpLH (tpHL)16ns, 16ns
Common mode transient immunity25kV/µs

Product details

It supports data rates up to 150 Mbps with propagation delays of 16 ns max and 1 ns pulse-width distortion, making it suitable for high-speed isolation in industrial fieldbuses, isolated SPI/UART interfaces, motor-drive feedback paths, and power-supply control loops.

The 150 Mbps data rate covers most high-speed serial protocols — SPI clocks up to 50 MHz, UART at several Mbps, and CAN FD isolation — without introducing bit-rate bottlenecks. The 16 ns max propagation delay keeps timing margins tight; paired with 1 ns rise/fall times, you get clean edges for clock and data lines. This part handles that without extra filtering.

Package and supply voltage — drop-in fit for most boards

The 3V to 5.5V supply means you can run it from a 3.3V rail on one side and 5V on the other, or both from the same rail — no separate regulator needed. It does not include an integrated isolated DC-DC converter (: Isolated Power = No), so you need a separate isolated supply for the secondary side.

Frequently asked questions

What is the data rate of ISO7221MDG4?

The ISO7221MDG4 supports a data rate of 150 Mbps, with 16 ns max propagation delay and 1 ns pulse-width distortion.

Is ISO7221MDG4 compatible with 5V supply?

Yes, the ISO7221MDG4 operates from 3V to 5.5V, so it works directly on a 5V supply rail on either side of the isolation barrier.