1FEATURES

• Qualified for Automotive Applications

• AEC-Q100 Qualified With the Following

Results:

– Device Temperature Grade 1: –40°C to

125°C Ambient Operating Temperature

Range

– Device HBM ESD Classification Level H3A

– Device CDM ESD Classification Level C5

• High Signaling Rate: 50 Mbps

• Low Power Consumption

• Low Propagation Delay – 9 ns (Typical)

• Low Skew – 300 ps (Typical)

• 4-kVpeak Maximum Isolation, 2.5 kVrms per

UL 1577, IEC/VDE and CSA Approved, IEC

60950-1, IEC 61010-1 End Equipment

Standards Approved. All Approvals Pending.

• 50 kV/μs Transient Immunity (Typical)

• Over 25-Year Isolation Integrity at Rated

Voltage

• Operates From 3-V to 5.5-V Supply and Logic

Levels

DESCRIPTION

The ISO7421A-Q1 provides galvanic isolation up to 2.5 kVrms for 1 minute per UL. This digital isolator has two

isolated channels with bidirectional channel configuration. 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 devices have TTL input thresholds and require two supply voltages from 3 V to 5.5 V, or any combination.

All inputs are 5-V tolerant when supplied from a 3-V supply.