CTW138 Datasheet, PDF (1/14 Pages) CT Micro International Corporation – Low Input Current Photodarlington Coupler

CTW138, CTW139
Low Input Current Photodarlington Coupler
Features
• Low current – 0.5mA
• Superior CTR-2000%
• CTR guaranteed 0–70°C
• Regulatory Approvals
UL - UL1577 (E364000)
VDE - EN60747-5-5(VDE0884-5)
CQC – GB4943.1, GB8898
IEC60065, IEC60950
Applications
• Digital logic ground isolation
• Telephone ring detector
• EIA-RS-232C line receiver
• High common mode noise line receiver
• Current loop receiver
Description
The CTW138 & CTW139 optocouplers consist of an
AlGaAs LED optically coupled to a high gain split
darlington photodetector.
The combination of a very low input current of
0.5mA and a high current transfer ratio of 2000%
makes this family particularly useful for input
interface to MOS, CMOS, LSTTL and EIA RS232C,
while output compatibility is ensured to CMOS as
well as high fan-out TTL requirements.
The devices are packaged in an 8-pin widebody
package and also available in surface mount lead
forming option.
Package Outline
Schematic
Note: Different lead forming options available. See package
dimension.
CT Micro
Proprietary & Confidential
Page 1
CTW138 / CTW139
Rev 1
May, 2016