ISO7420DR provide galvanic isolation up to 2500 VRMS for 1 minute per UL. These digital isolators have two isolated channels. Each isolation channel has a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuit from entering the local ground and interfering with or damaging sensitive circuitry. The suffix M indicates wide temperature range (–40°C to 125°C).

ISO7420DRThese devices have TTL input thresholds and require two supply voltages, 3.3 or 5 V, or any combination. All inputs are 5-V tolerant when supplied from a 3.3-V supply.

ISO7420DRare specified for signaling rates up to 1 Mbps. Due to their fast response time, under most cases, these devices will also transmit data with much shorter pulse widths. Designers should add external filtering to remove spurious signals with input pulse duration <20 ns if desired.

Features：

Highest Signaling Rate: 1 Mbps

Low Power Consumption, Typical ICC per Channel (3.3-V operation):

ISO7420: 1.1 mA, ISO7421: 1.5 mA

Low Propagation Delay – 9 ns Typical

Low Skew – 300 ps Typical

Wide TA Range: –40°C to 125°C (M-Grade)

50-kV/μs Transient Immunity, Typical

Over 25-Year Isolation Integrity at Rated Voltage

Operates From 3.3-V and 5-V Supply and Logic Levels

3.3-V and 5-V Level Translation

Narrow Body SOIC-8 Package

Safety and Regulatory Approvals:

4242 VPK Isolation per DIN V VDE V 0884-10 and DIN EN 61010-1

2500 VRMS Isolation for 1 minute per UL 1577

CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 61010-1 Standards

CQC Certification per GB4943.1-2011