1 Features

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

industry standard phototransistor optocouplers

• 1 channel diode-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: VCEO (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 diode-emulator input and

transistor output. The devices are pin-compatible and

drop-in replaceable 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 diode-input stage consumes less power

than optocouplers.

ISOM811x devices are offered in a small SOIC-4

packages with 2.54 mm and 1.27 mm pin pitch,

supporting a 3.75-kVRMS isolation rating and DC

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

input. The high performance and reliability of

ISOM811x enable these devices to be used in power

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

industrial controllers, factory automation applications,

and more.