Description

The Si87xx isolators are pin-compatible, one-channel, drop-in replacements for popular optocouplers with data rates up to 15 Mbps. These devices isolate high-speed digital signals and offer performance, reliability, and flexibility advantages not available with optocoupler solutions. The Si87xx series is based on Silicon Labs proprietary CMOS isolation technology for low-power and high-speed operation and are resistant to the wear-out effects found in optocouplers that degrade performance with increasing temperature, forward current, and device age. As a result, the Si87xx series offer longer service life and dramatically higher reliability compared to optocouplers. Ordering options include open collector output with and without integrated pull-up resistor and output enable options.

Features

■ Pin-compatible, drop-in upgrades for popular high-speed digital optocouplers

■ Performance and reliability advantages vs. optocouplers

? Resistant to temperature, age and forward current effects

? 10x lower FIT rate for longer service life

? Higher common-mode transient immunity: >50 kV/μs typical

? Lower power and forward input diode current

■ PCB footprint compatible with optocoupler packaging

■ Wide range of product options

■ 1 channel diode emulator input

■ 3 to 30 V open collector output

■ Propagation delay 30 ns

■ Data rates dc to 15 Mbps

■ 3.75 and 5 kV reinforced isolation

? UL, CSA, VDE

■ Wide operating temperature range

? –40 to +125 °C

■ RoHS-compliant packages

? SOIC-8

? DIP8

? SDIP6

? LGA8

Applications

■ Industrial automation

■ Motor controls and drives

■ Isolated switch mode power supplies

■ Isolated data acquisition

■ Test and measurement equipment