1 Features

• Drop-in replacement and pin-to-pin upgrade to

industry-standard phototransistor optocouplers

• 1-channel LED-emulator input

• Current transfer ratio (CTR) at IF = 5 mA, VCE = 5

V:

– ISOM8110, ISOM8115: 100 to 155

– ISOM8111, ISOM8116: 150 to 230

– ISOM8112, ISOM8117: 255 to 380

– ISOM8113, ISOM8118: 375 to 560

• High collector-emitter voltage: VCE (max) = 80 V

• Robust isolation barrier

– Isolation rating: 3750-VRMS

– Working voltage: 500-VRMS, 707-VPK

– Surge capability: up to 10-kV

• Temperature range: –55°C to +125°C

• Response time: 3 μs (typical) at VCE = 10 V, IC = 2

mA, RL = 100 Ω

• Safety-related certifications planned:

– UL 1577 recognition, 3750-VRMS isolation

– DIN EN IEC 60747-17 (VDE 0884-17)

conformity per VDE

– IEC 62368-1, IEC 61010-1 certifications

– CQC GB 4943.1 certification

2 Applications

• Switching power supply

• Programmable Logic Controller (PLC)

• Motor drive I/O and position feedback

• Factory automation

• Data acquisition

• HEV/EV battery-management system (BMS)

3 Description

The ISOM811x devices are single-channel

optocoupler-emulators with LED-emulator input and

transistor output. The devices are pin-compatible

and drop-in replacements for many traditional

optocouplers, allowing enhancement to existing

systems with no PCB redesign.

ISOM811x opto-emulators offer significant reliability

and performance advantages compared to

optocouplers, including high bandwidth, low turn-off

delay, low power consumption, wider temperature

ranges, and tight CTR and process controls resulting

in small part-to-part skew. Since there is no aging

effect or temperature variation to compensate for, the

emulated LED input stage consumes less power than

optocouplers.

ISOM811x devices are offered in small SOIC-4

packages with 2.54-mm and 1.27-mm pin pitchs,

supporting a 3.75-kVRMS isolation rating and DC

(ISOM811[0-3]) and bi-directional DC (ISOM811[5-8])

input options. The high performance and reliability of

ISOM811x enables these devices to be used in power

supply feedback design, motor drives, I/O modules in

industrial controllers, factory automation applications,

and more.