DATA SHEET OLS2449: Dual Channel, Radiation Tolerant, Phototransistor Hermetic Surface Mount Optocoupler Features Same reliable processing and construction as the OLS049, but with a higher current transfer ratio (CTR) CTR is: Guaranteed over 55 C to +100 C ambient temperature range High at low LED currents High BVCEO, 65V minimum 1500 VDC electrical isolation High-reliability screening is available Description The OLS2449 is specifically designed for high-reliability applications that require optical isolation in radiation environments such as gamma, neutron, and proton radiation with high CTR and low saturation VCE. Each optocoupler channel Figure 1. OLS2449 Block Diagram consists of an LED and N-P-N silicon phototransistor that is electrically isolated, but optically coupled inside a hermetic eight- Figure 1 shows the OLS2449 functional block diagram. Table 1 pin Leadless Chip Carrier (LCC) package. provides the OLS2449 absolute maximum ratings. Table 2 The electrical parameters are similar the JEDEC registered 4N49U provides the OLS2449 electrical specifications. optocoupler, but with a higher CTR and better CTR degradation Figures 2 through 4 illustrate the OLS2449 typical performance characteristics due to radiation exposure. characteristics. Figure 5 shows the OLS2449 switching test The OLS2449 has 100 percent high-reliability screening parts circuit. Figure 6 provides the OLS2449 package dimensions. available (contact Isolink for more information). Phone 408 946-1968 Fax 408 946-1960 hirel.sales skyworksinc.com www.skyworksinc.com 202472D Isolink Proprietary Information Products and Product Information are Subject to Change Without Notice April 17, 2017 1 DATA SHEET OLS2449: DUAL CHANNEL, RADIATION TOLERANT, PHOTOTRANSISTOR HERMETIC SURFACE MOUNT OPTOCOUPLER Table 1. OLS2449 Absolute Maximum Ratings (Note 1) Parameter Symbol Minimum Maximum Units Coupled Input to output isolation voltage (Note 2) VDC 1500 +1500 V Channel to channel isolation voltage (Note 3) 500 +500 V Storage temperature range TSTG 65 +150 C Operation temperature range TA 55 +125 C Lead temperature for 10 seconds 240 C Input Diode Average input current (Note 4) IDD 40 mA Peak forward current IF 1 A Reverse voltage VR 2 V Power dissipation PD 70 mW Output Detector Collector to emitter voltage VCE 65 V Emitter to collector voltage VEC 5 V Continuous collector current ICC 50 mA Power dissipation (Note 5) PD 300 mW Note 1: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device. Note 2: Measured between pins 1, 2, 3, and 4 shorted together, and pins 5, 6, 7, and 8 shorted together. TA = 25 C and duration = 1 s. Note 3: Measured between pins 1, 2, 7, and 8 shorted together, and pins 3, 4, 5, and 6 shorted together. TA = 25 C and duration = 1 s. Note 4: Value applies for Pw 1 s, PRR 300 pps. Note 5: Derate linearly at 3 mW/C above 25 C. CAUTION: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device. This device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times. Phone 408 946-1968 Fax 408 946-1960 hirel.sales skyworksinc.com www.skyworksinc.com 2 April 17, 2017 Isolink Proprietary Information Products and Product Information are Subject to Change Without Notice 202472D