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ISO7221BDR

TI ISO7221BDR Digital Isolator, 5Mbps, 2500Vrms, 8-SOIC

MPNISO7221BDR
Active

Texas Instruments ISO7221BDR, General Purpose digital isolator, 2 channels, 1/1 unidirectional, 5Mbps data rate, 2500Vrms isolation, capacitive coupling, 3V~5.5V supply, -40°C~125°C, 8-SOIC package, Tape & Reel.

$3.1000Ref. price · indicative, final on quote
Texas Instruments ISO7221BDR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ISO7221BDR specifications
ParameterValue
TypeGeneral Purpose
Channel typeUnidirectional
MountingSurface Mount
Supply voltage3V ~ 5.5V
Voltage - isolation2500Vrms
Isolated powerNo
Operating temperature-40°C~125°C
Pulse width distortion3ns
PackageTape & Reel (TR); Cut Tape (CT)
Data rate5Mbps
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)70ns, 70ns
Common mode transient immunity25kV/µs

Product details

Dual-channel digital isolator for industrial signal isolation

It supports a maximum data rate of 5Mbps, making it suitable for isolating SPI, UART, and CAN bus signals in motor drives, PLCs, and industrial sensor interfaces.

70ns propagation delay — budget for closed-loop timing

The 1ns typical rise/fall time keeps signal integrity clean at 5Mbps without excessive edge-rate ringing.

25kV/µs CMTI — stays clean in noisy environments

A minimum common-mode transient immunity of 25kV/µs means the output won't glitch when high dV/dt transients couple across the isolation barrier. This is critical in motor-drive inverters, solar inverters, and any application where fast-switching power stages share a ground reference with the control side.

The base product number ISO7221 covers a family of speed and channel-configuration variants, simplifying BOM consolidation if you need a different data rate or channel count in the same footprint.

8-SOIC package — board area and storage notes

Housed in an 8-SOIC (0.154", 3.90mm width) surface-mount package, this isolator fits standard SOIC-8 land patterns.

Frequently asked questions

Does ISO7221BDR support 5Mbps?

Yes, the ISO7221BDR is rated for a maximum data rate of 5Mbps. With 70ns max propagation delay and 3ns pulse width distortion, it handles SPI, UART, and CAN bus isolation at that speed without bit errors.

Can ISO7221BDR replace ISO7220?

The ISO7221BDR and ISO7220 are both dual-channel digital isolators in the same family, but the ISO7221 has a 1/1 channel configuration (one channel per direction), while the ISO7220 has a 2/0 configuration (both channels in the same direction). They are not pin-compatible for a drop-in replacement unless your circuit uses only one direction per channel. Check the channel direction requirements of your design before substituting.