DATA SHEET Features • Hermetic SMT package • 1500 Vdc electrical isolation • High CTR • Small package size • High reliability and rugged construction • High-reliability screening available • Radiation tolerant Description The OLS249 consists of an LED that is optically coupled to an N-P-N silicon phototransistor, which is mounted and coupled in a custom hermetic surface-mount technology (SMT) leadless chip carrier (LCC) package. The low input current makes the OLS249 well-suited for direct Complementary Metal Oxide Semiconductor (CMOS) to Low Power Schottky Transistor-Transistor Logic (LSTTL)/Transistor-to-Transistor Logic (TTL) interfaces. Electrical parameters are similar to the JEDEC registered 4N49 optocoupler, but with better current transfer ratio (CTR) degradation characteristics due to radiation exposure. Special electrical parametric selections are available upon request. Figure 1. OLS249 Block Diagram Figure 1 shows the OLS249 functional block diagram. Table 1 provides the OLS249 absolute maximum ratings. Table 2 provides the OLS249 electrical specifications. Figures 2 through 4 illustrate the OLS249 typical performance characteristics. Figure 5 shows the OLS249 switching test circuit. Figure 6 provides the OLS249 package dimensions. Phone [408] 946-1968 • Fax [408] 946-1960 • [email protected] • www.skyworksinc.com 202682E • Isolink Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 13, 2017 &nb

Table 1. OLS249 Absolute Maximum Ratings1 Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to the 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. Measured between pins 1, 2, and 6 shorted together, and pins 3, 4, and 5 shorted together. Ta = 25°C and duration = 1 s. Derate linearly to 125 °C free-air temperature at 0.67 mA/°C above 65 °C. For pulse width < 1 ps, pulse repetition rate < 300...

DATA SHEET • OLS249: RADIATION-TOLERANT PHOTOTRANSISTOR HERMETIC SURFACE-MOUNT OPTOCOUPLER Table 2. OLS249 Electrical Specifications1 (Ta = 25 °C, Unless Otherwise Noted) 1 Performance is guaranteed only under the conditions listed in the above table. 2 Measured between pins 1, 2, and 6 shorted together, and pins 3, 4, and 5 shorted together. Ta = 25°C and duration = 1 s. Phone [408] 946-1968 • Fax [408] 946-1960 • [email protected] • www.skyworksinc.com 202682E • Isolink Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 13, 2017...

DATA SHEET • OLS249: RADIATION-TOLERANT PHOTOTRANSISTOR HERMETIC SURFACE-MOUNT OPTOCOUPLER Typical Performance Characteristics 9 Normalized Collector Current Figure 3. Normalized Collector Current vs Forward Current Figure 2. Forward Current vs Diode Forward Voltage Normalized CTRCE Figure 4. Normalized CTRCE vs Temperature April 13, 2017 • Isolink Proprietary Information • Products and Product Information are Subject to Change W

DATA SHEET • OLS249: RADIATION-TOLERANT PHOTOTRANSISTOR HERMETIC SURFACE-MOUNT OPTOCOUPLER Input IF IF Pulse Width = 100 μs Duty Cycle = 1% Figure 5. OLS249 Switching Test Circuit OLSXXX XXYY Figure 6. OLS249 Package Dimensions Phone [408] 946-1968 • Fax [408] 946-1960 • [email protected] • www.skyworksinc.com 202682E • Isolink Proprietary Information • Products and Product Information are Subject to Change W

DATA SHEET • OLS249: RADIATION-TOLERANT PHOTOTRANSISTOR HERMETIC SURFACE-MOUNT OPTOCOUPLER Copyright © 2013-2017 Isolink, Inc. All Rights Reserved. Information in this document is provided in connection with Isolink, Inc. (“Isolink”), a wholly-owned subsidiary of Skyworks Solutions, Inc. These materials, including the information contained herein, are provided by Isolink as a service to its customers and may be used for informational purposes only by the customer. Isolink assumes no responsibility for errors or omissions in these materials or the information contained herein. Isolink may change...