Si8641 Datasheet PDF – Quad Digital Isolator – Silicon Labs

Part Number : Si8641

Function : Quad-Channel Digital Isolator

Package : QSOP-16,  NB SOIC-16, WB SOIC-16 Type

Manufactures : Silicon Labs


Si8641 image


Silicon Lab’s family of ultra-low-powerdigital isolators are CMOS devices offering substantial data rate, propagation delay, power, size, reliability, and external BOM advantages over legacy isolation technologies. The operating parameters of these products remain stable across wide temperature ranges and throughout device service life for ease of design and highly uniform performance. All device versions have Schmitt trigger inputs for high noise immunity and only require VDD bypass capacitors.
Data rates up to 150 Mbps are supported, and all devices achieve propagation delays of less than 10 ns. Enable inputs provide a single point control for enabling and disabling output drive. Ordering options include a choice of isolation ratings (2.5, 3.75 and 5 kV) and a selectable fail-safe operating mode to control the default output state during power loss. All products >1 kVRMS are safety certified by UL, CSA, VDE, and CQC, and products in wide-body packages support reinforced insulation withstanding up to 5 kVRMS.


Si8641 datasheet pinout

1. High-speed operation
(1) DC to 150 Mbps
2. No start-up initialization required
3. Wide Operating Supply Voltage
(1) 2.5–5.5 V
4. Up to 5000 VRMSisolation
5. 60-year life at rated working voltage
6. High electromagnetic immunity
7. Ultra low power (typical) 5 V Operation
 (1) 1.6 mA per channel at 1 Mbps
(2) 5.5 mA per channel at 100 Mbps 2.5 V Operation
 (3) 1.5 mA per channel at 1 Mbps
 (4) 3.5 mA per channel at 100 Mbps
8. Tri-state outputs with ENABLE Schmitt trigger inputs

Ordering Information

Si8641 ordering guide

Other data sheets within the file : Si8641BA-B-IU, Si8641BB-B-IS1, Si8641BC-B-IS1, Si8641BD-B-IS

Si8641 Datasheet