ISO7221C-Q1 Datasheet | Texas Instruments

ISO7220A-Q1, ISO7221A-Q1, ISO7221C-Q1 SLLS965G - JULY 2009 - REVISED OCTOBER 2025 ISO722x-Q1 Dual-Channel Digital Isolators 1 Features - 1 and 25Mbps Signaling Rate Options - Low Channel-to-Channel Output Skew; 1ns Max - Low Pulse-Width Distortion (PWD); 1ns Max - Low Jitter Content; 1ns Typ at 25Mbps - 50kV/μs Typical Transient Immunity - Operates with 2.8V (C-Grade), 3.3V, or 5V Supplies - 4kV ESD Protection - - 40°C to +125°C Operating Range - Typical 28-Year Life at Rated Voltage (see Isolation Lifetime Projection) - Safety-Related Certifications - DIN EN IEC 60747-17 (VDE 0884-17) - UL 1577 ponent recognition program - IEC 61010-1, IEC 62368-1 certifications 2 Applications - Factory Automation - Modbus - Profibus™ - DeviceNet™ Data Buses - puter Peripheral Interface - Servo Control Interface - Data Acquisition 3 Description The ISO7220x-Q1 and ISO7221x-Q1 family devices are dual-channel digital isolators. To facilitate PCB layout, the channels are oriented in the same direction in the ISO7220x-Q1 and in opposite directions in the ISO7221x-Q1. These devices have a logic input and output buffer separated by TI’s silicon-dioxide (SiO2) isolation barrier, providing galvanic isolation of up to 4000VPK per VDE. Used in conjunction with isolated power supplies, these devices block high voltage and isolate grounds, as well as 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 isolation barrier. Across the isolation barrier, a differential parator receives the logic transition information, then sets or resets a flip-flop and the output circuit accordingly. A periodic update pulse...