ISO7420FE
Low-Power Dual Channel Digital Isolators
Description
ISO7420E, ISO7420FE, ISO7421E and ISO7421FE provide galvanic isolation up to 2.5 KVRMSfor 1 minute per UL. These devices have two isolated channels. Each 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 F indicates low-output option in fail-safe condition.
These devices have TTL input thresholds and operate from 3V to 5.5V supplies. All inputs are 5V tolerant when supplied from a 3.3V supply.
Features
- Signaling Rate > 50 Mbps
- For Devices with Suffix F, Output is low in fail-safe mode
- Low Power Consumption: Typical ICC per Channel (3.3V Supplies):
- ISO7420: 1.4mA at 1Mbps, 2.5mA at 25Mbps
- ISO7421: TBDmA at 1Mbps, TBDmA at 25Mbps
- Low Propagation Delay: 7ns (Typical)
- Low Pulse Skew: 200 ps (Typical)
- Wide TA Range Specified: –40°C to 125°C
- 50 KV/µs Transient Immunity, Typical
- Isolation barrier life: > 25 Years
- Operates from 3V to 5.5V Supply Levels
- Narrow Body SOIC-8 Package
- APPLICATIONS
- Opto-coupler Replacement in:
- Industrial FieldBus
- ProfiBus
- ModBus
- DeviceNet™ Data Buses
- Servo Control Interface
- Motor Control
- Industrial FieldBus
- Opto-coupler Replacement in:
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