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ISO7220MDR

TI ISO7220MDR Digital Isolator, 150 Mbps, 2500 Vrms, 8-SOIC

MPNISO7220MDR
Active

Texas Instruments ISO7220MDR, General Purpose, Capacitive Coupling, 2 Channel, Unidirectional, 8-SOIC (0.154", 3.90mm Width), 150Mbps, 2500Vrms, -40°C~125°C.

$3.9200Ref. price · indicative, final on quote
Texas Instruments ISO7220MDR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ISO7220MDR specifications
ParameterValue
TypeGeneral Purpose
Channel typeUnidirectional
MountingSurface Mount
Supply voltage3V ~ 5.5V
Voltage - isolation2500Vrms
Isolated powerNo
Operating temperature-40°C~125°C
Pulse width distortion1ns
PackageTape & Reel (TR); Cut Tape (CT)
Data rate150Mbps
TechnologyCapacitive Coupling
Case8-SOIC (0.154\", 3.90mm Width)
Channels2
Inputs - side 1/Side 22/0
Rise (Fall time)1ns, 1ns
Propagation delay tpLH (tpHL)16ns, 16ns
Common mode transient immunity25kV/µs

Product details

The two channels are both directed from side 1 to side 2 (2/0 input/output configuration), so it handles downstream signal flow only — no bidirectional or reverse-channel capability. Rated for 2500 Vrms isolation and a common-mode transient immunity of 25 kV/µs minimum, it is built for industrial environments where ground-potential differences and noise transients are a concern.

The 2500 Vrms isolation voltage is the basic working rating for reinforced insulation in many industrial and medical applications. If the CMTI is too low, the output glitches or latches, and the system faults. At 25 kV/µs, this part clears the margin for most 400 V to 690 V drive stages without needing an external snubber or ferrite.

Package and footprint reality for the layout

No exposed thermal pad, so the dissipation path is through the leads and the board copper; at 150 Mbps with a 5.5 V supply and a 15 pF load, the junction temperature stays well within the 125°C limit in still air, but a 4-layer board with a ground plane under the device is recommended for consistent thermal and noise performance.

That removes the obsolescence risk for a new design-in.

Frequently asked questions

Can ISO7220MDR be used as a replacement for ISO7220C?

The ISO7220MDR is a higher-speed variant (150 Mbps) compared to the ISO7220C, which is typically rated at lower data rates. Both are pin-compatible in the 8-SOIC package and share the same capacitive-coupling architecture, so the MDR can replace the C variant in a design as long as the system timing budget accommodates the faster edge rates and the 1 ns pulse-width distortion.

What is the difference between ISO7220MDR and ISO7220B?

The ISO7220B is a lower-speed variant (typically 5 Mbps or 25 Mbps) with relaxed CMTI and propagation delay specs, while the ISO7220MDR runs at 150 Mbps with 16 ns max propagation delay and 25 kV/µs minimum CMTI. Both are 2-channel unidirectional isolators in the same 8-SOIC footprint, but the MDR is the part to pick when the signal chain demands higher throughput and better noise immunity.

Is ISO7220MDR RoHS compliant?

Yes, the ISO7220MDR is RoHS compliant as standard for TI's current-production digital isolators in the SOIC package.

Can ISO7220MDR be used for I2C isolation?

The ISO7220MDR is unidirectional, so it cannot directly isolate a bidirectional I2C bus without external circuitry (e.g., a discrete direction-control scheme or a dedicated I2C isolator). It works for isolating unidirectional signals such as SPI clock and data lines.