Dual Channel, 1/1, 25Mbps Digital Isolator

The ISO7220 and ISO7221 are dual-channel digital Isolators To facilitate PCB layout, the channels are oriented in the same direction in the ISO7220 and in opposite directions in the ISO7221. These devices have a Logic input and output Buffer separated by TI?s silicon-dioxide (SiO2) isolation barrier, providing galvanic isolation of up to 4000 V. Used in conjunction with isolated power supplies, these devices block high voltage, isolate grounds, and prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry.
A binary input signal is conditioned, translated to a balanced signal, then differentiated by the capacitive isolation barrier. Across the isolation barrier, a differential Comparator receives the Logic transition information, then sets or resets a Flip-Flop and the output circuit accordingly. A periodic update pulse is sent across the barrier to ensure the proper dc level of the output. If this dc-refresh pulse is not received every 4 s, the input is assumed to be unpowered or not being actively driven, and the failsafe circuit drives the output to a Logic high state.
The small capacitance and resulting time constant provide very fast operation with signaling rates available from 0 Mbps (DC) to 150 Mbps.(1) The A- and C-option devices have TTL input thresholds and a noise Filter at the input that prevents transient pulses from being passed to the output of the device. The M-option devices have CMOS Vcc/2 input thresholds and do not have the input noise-filter and the additional propagation delay.
These devices require two supply voltages of 3.3 V, 5 V, or any combination. All inputs are 5-V tolerant when supplied from a 3.3-V supply and all outputs are 4-mA CMOS.
These devices are characterized for operation over the ambient temperature range of -40C to 125C.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
ISO7221CQDRQ1 Texas Instruments Automotive Catalog Dual Channel, 1/1, 25Mbps Digital Isolator 8-SOIC -40 to 125
ISO7221CD Texas Instruments Dual Channel, 1/1, 25Mbps Digital Isolator 8-SOIC -40 to 125
ISO7221CDRG4 Texas Instruments Dual Channel, 1/1, 25Mbps Digital Isolator 8-SOIC -40 to 125
ISO7221CHD Texas Instruments High Temperature Dual Channel, 1/1, 25Mbps Digital Isolator 8-SOIC -55 to 175
ISO7221CDR Texas Instruments Dual Channel, 1/1, 25Mbps Digital Isolator 8-SOIC -40 to 125
ISO7221CDG4 Texas Instruments Dual Channel, 1/1, 25Mbps Digital Isolator 8-SOIC -40 to 125
ISO7221C 's PackagesISO7221C 's pdf datasheet
ISO7221CD SOIC
ISO7221CDG4 SOIC
ISO7221CDR SOIC
ISO7221CDRG4 SOIC




ISO7221C Pinout, Pinouts
ISO7221C pinout,Pin out
This is one package pinout of ISO7221C,If you need more pinouts please download ISO7221C's pdf datasheet.

ISO7221C circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

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