Si87xx
5 KV LED EMULATOR INPUT, OPEN COLLECTOR
OUTPUT ISOLATORS
Features
Pin Assignments:
Pin-compatible, drop-in upgrades for Wide range of product options
See page 20
popular high-speed digital
1 channel diode emulator input
optocouplers
3 to 30 V open collector output
Performance and reliability
Propagation delay 30 ns
advantages vs. optocouplers
Data rates dc to 15 Mbps
Resistant to temperature, age and
forward current effects Up to 5000 V isolation and 10 kV
RMS
10x lower FIT rate for longer
surge protection
service life
AEC-Q100 qualified
Higher common-mode transient
Wide operating temperature range
immunity: >50 kV/s typical
40 to +125 C
SOIC-8, DIP8, LGA8
Lower power and forward input
RoHS-compliant packages Open Collector Output
diode current
SOIC-8 (Narrow body)
PCB footprint compatible with
DIP8 (Gull-wing)
optocoupler packaging
SDIP6 (Stretched SO-6)
LGA8
Applications
Industrial automation Isolated data acquisition
SDIP6
Motor controls and drives Test and measurement equipment
Open Collector Output
Isolated switch mode power supplies
Safety Regulatory Approvals
UL 1577 recognized VDE certification conformity
Up to 5000 Vrms for 1 minute IEC60747-5-2/VDE0884 Part 10
(basic/reinforced insulation)
CSA component notice 5A
CQC certification approval
approval
GB4943.1
IEC 60950-1, 61010-1, 60601-1
(reinforced insulation)
SOIC-8, DIP8, LGA8
Open Collector Output
Description with 20 k Pull-up Resistor
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 advantes ag 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
SOIC-8, DIP8, LGA8
age. As a result, the Si87xx series offer longer service life and
Open Collector Output
dramatically higher reliability compared to optocouplers. Ordering options
with Output Enable
include open collector output with and without integrated pull-up resistor
and output enable options.
Patent pending
Rev. 1.1 4/14 Copyright 2014 by Silicon Laboratories Si87xxSi87xx
Functional Block Diagram
Diode
VDD
Emulator
A1
Output
Stage
REC
XMIT OUT
IF
(Open-Collector)
C1
GND
2 Rev. 1.1