Skip to main content
Log in
ISO7221ADG4

TI ISO7221ADG4 Digital Isolator, 1 Mbps, 2500 Vrms, 8-SOIC

MPNISO7221ADG4
End of Life

Texas Instruments ISO7221ADG4, General Purpose digital isolator, Capacitive Coupling, 2 Channel, 2500Vrms, 1Mbps, 8-SOIC, -40°C~125°C.

$2.0400Ref. price · indicative, final on quote
Texas Instruments ISO7221ADG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ISO7221ADG4 specifications
ParameterValue
TypeGeneral Purpose
Channel typeUnidirectional
MountingSurface Mount
Supply voltage3V ~ 5.5V
Voltage - isolation2500Vrms
Isolated powerNo
Operating temperature-40°C~125°C
Pulse width distortion14ns
PackageTube
Data rate1Mbps
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)475ns, 475ns
Common mode transient immunity25kV/µs

Product details

Why this 1 Mbps capacitive isolator instead of an optocoupler

The ISO7221ADG4: It delivers 1 Mbps per channel with typical rise/fall times of 1 ns and a maximum propagation delay of 475 ns in each direction.

At 1 Mbps the ISO7221ADG4 handles UART, SPI, and CAN protocols. The 475 ns max propagation delay adds about one bit-time of latency at 1 Mbps. The 25 kV/µs minimum CMTI keeps the output clean during fast motor-drive switching.

No isolated power is generated on-chip — each side needs its own supply rail, which is standard for digital isolators in this class.

Frequently asked questions

Where can I buy ISO7221ADG4?

Buyers need a reliable source to purchase this specific part quickly and avoid counterfeit or dead stock.

How much does ISO7221ADG4 cost?

Pricing directly impacts BOM budget decisions and sourcing comparisons between distributors.

Is ISO7221ADG4 in stock?

Stock availability determines lead time and whether the part can be sourced immediately for production or repairs.

Is ISO7221ADG4 obsolete or active?

Lifecycle status affects long-term design viability and risk of forced redesign if the part is EOL.

What is the pinout of ISO7221ADG4?

Design engineers need pinout to validate PCB layout and ensure proper connection in the circuit.

What is a direct replacement for ISO7221ADG4?

Maintenance techs and brokers need cross-reference options when the original part is unavailable or obsolete.