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ILD256T
Optocoupler, Phototransistor Output, Dual Channel, AC Input
ILD256TDocument Number 83649
www.vishay.com
Optocoupler, Phototransistor Output, Dual Channel, AC Input
Features Each Channel: Guaranteed CTR Symmetry, 2:1
Maximum Bidirectional AC Input SOIC-8 Surface Mountable Package Standard Lead Spacing, .05 " Available only on Tape and Reel Option (Con-
forms to EIA Standard 481-2)
Agency Approvals UL File #E52744 System Code Y
ApplicationsTelecom applications ring detection off/on hook sta-
tus
DescriptionThe ILD256T is a dual channel optocoupler. Each
channel consists of two infrared emitters coupled to a
silicon NPN phototransistor detector.
These circuit elements are constructed with a stan-
dard SOIC-8A footprint.
The product is well suited for telecom applications
such as ring detection or off/on hook status, given its
bidirectional LED input and guaranteed current trans-
fer ratio (CTR) of 20 % at IF = 10 mA.
Absolute Maximum Ratingsamb = 25 °C, unless otherwise specified
Stresses in excess of the absolute Maximum Ratings can cause permanent damage to the device. Functional operation of the device is
not implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute
Maximum Rating for extended periods of the time can adversely affect reliability.
InputEach channel, Tamb = 25°C
