Photocoupler Part Name: LA314 Features ‧SOP package 4 Pin type in miniature design ‧600% minimum current transfer ratio ‧1500V rms Input/Output isolation ‧AC input. Applications ‧Telephones ‧Programmable controllers ‧System appliances, measuring instruments. ‧Signal transmission between circuits of different potentials and impedances. Dimensions(Unit: mm [inch]) 8 7 6 5 8 7 6 5 1 2 3 4 Letex LA314 16A 1 2 3 4 1,3. 2,4. 5,7. 6,8. Anode,Cathode Cathode, Anode Emitter Collector General Tolerance: ±0.1 Terminal Thickness: 0.15 [.006] - 1 - Letex Technology Corp. Photocoupler Part Name: LA314 Absolute Maximum Ratings (Ambient Temperature: 25℃) Item Symbol Rating Units Forward Current Input Reverse Voltage Peak Forward Current Collector to Emitter Voltage Emitter to Collector Voltage Output Collector Current Power Dissipation I/O Breakdown Voltage Power Dissipation Storage Temperature Operating Temperature Soldering Temperature mA V A V V mA mW Vrms mW ℃ ℃ ℃ IF VR IFP Vceo Veco Ic Pc VI/O PD Tstg Top TSol 50 5 1 40 6 50 150 1500 200 -55 to +125 -55 to +100 260 Coupled Output Input Electrical Specifications (Ambient Temperature: 25℃) Item Symbol MIN. TYP. Forward Voltage Reverse Current Junction Capacitance C-E Breakdown Voltage E-C Breakdown Voltage Collector Dark Current Current Transfer Ratio Collector Saturation Voltage Isolation Resistance Isolation Capacitance Rise Time Fall Time VF IR Ct Vceo Veco Iceo CTR Vce(sat) RI/O CI/O 1.2 V µA pF V V nA ﹪ V Ω pF µs µs 100 7000 1 109 300 250 - 2 - 10 seconds max. 1.4 - 1.0 tr tf RH=60%, 1min Units 35 6 1600 Ic=1mA, IB=0 IE=100µA, IB=0 MAX. 30 600 Note Conditions IF= ± 20mA V=0, f=1.0KHz Ic=0.5mA Ie=0.1mA Vce=20V, IF=0 IF= ± 1mA, Vce=5V IF=±20mA, Ic=1mA V=500V DC V=0, f=1.0MHz Vce=5V, Ic=2mA, RL=100Ω Letex Technology Corp. Photocoupler Reference Data Collector power dissipation Vs. Ambient temperature Forward current Vs. Ambient temperature Peak forward current Vs. Duty ratio Forward current (mA) 50 40 30 20 10 2000 150 Peak forward current ( mA) Collector power dissipation (mW) 60 100 50 Pulse width 100us Ta = 25℃ 1000 500 200 100 50 20 0 0 -25 0 25 50 75 100 125 10 -25 Ambient temperature (℃) 0 25 50 75 100 25℃ IF = 30mA 25 160 Collector current (mA) 50℃ 0℃ 100 140 25℃ 120 CTR (%) 50 20 10 100 80 60 5 40 2 20 1 0.5 1.0 1.5 2.0 2.5 3.0 15 0 2 5 10 20 50 0 0 10 IF = 20mA Ic = 1mA 0.14 50 75 3 4 5 6 7 8 9 -5 Vce = 20V 0.12 0.10 0.08 0.06 10 -6 10 -7 10 -8 10 -9 0.04 10 -10 0.02 10 -11 0 25 2 Collector dark current Vs. Ambient temperature Collector dark current (A) Collector-Emitter saturation voltage (V) 50 0 1 Collector-Emitter voltage (V) 0.16 -25 10mA 10 Collector-Emitter saturation voltage Vs. Ambient temperature 100 Ta = 25℃ 20mA Pc(Max) Forward current (mA) IF = 5mA Vce = 5V 5 10 5mA 1 150 0 2 5 Forward voltage (V) Relative CTR Vs. Ambient temperature 5 10 20 1 0 -1 2 30 Vce = 5V Ta = 25℃ 180 200 5 10 Collector current Vs. Collector-Emitter voltage 200 Ta = 75℃ -2 2 Duty ratio Current transfer ratio Vs. Forward current 500 Forward current (mA) 5 10 Ambient temperature (℃) Forward current Vs. Forward voltage Relative CTR ( %) -3 125 100 -25 Ambient temperature (℃) 0 25 50 75 100 -25 Ambient temperature (℃) Collector-Emitter saturation voltage Vs. Forward current 0 25 50 75 100 Ambient temperature (℃) Test circuit for resopnse time Response time Vs. Load resistance 1.2 Ic=0.5mA 200 100 Response time ( μ s) 7mA 5mA 3mA 0.6 Vcc 500 0.8 1mA Collector-Emitter satureation voltage (V) Ta = 25℃ 1.0 0.4 Vce = 2V Ic = 2mA Ta = 25℃ Input Input RD 50 RL Output Output 10% 20 90% 10 5 2 1 0.2 0.5 0.2 0 0.1 0 10 20 30 40 Forward current (mA) 50 60 0.1 0.2 0.5 1 2 5 10 Load resistance (k Ω ) - 3 - Letex Technology Corp.