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FEATURES

? ILD74, ILQ74 TTL compatible

? Transfer ratio, 35 typical

? Coupling capacitance, 0.5 pF

? Single, dual, and quad channel

? Industry standard DIP packages

? Material categorization:

for definitions of compliance please see

www.vishay.com/doc?99912

AGENCY APPROVALS

? UL / cUL 1577

? DIN EN 60747-5-5 (VDE 0884-5), available with option 1

? CQC

? CSA 93751

? FIMKO: ILQ74 series

? FIMKO: ILD74 series

DESCRIPTION

The ILD74, ILQ74 is an optically coupled pair with a GaAIAs

infrared LED and a silicon NPN phototransistor. Signal

information, including a DC level, can be transmitted by the

device while maintaining a high degree of electrical isolation

between input and output.

The ILD74, ILQ74 is especially for driving medium-speed

logic, where it may be used to eliminate troublesome ground

loop and noise problems. Also it can be used to replace

relays and transformers in many digital interface

applications, as well as analog applications such as CTR

modulation.

The ILD74 has two isolated channels in a single DIP

package; the ILQ74 has four isolated channels per package.