Texas Instruments ISO7221M

DUAL DIGITAL ISOLATORS

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 tis 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. view all in datasheet