OPTOLOGIC® OPTICAL INTERRUPTER SWITCH H21LTB H21LTI H21LOB H21LOI PACKAGE DIMENSIONS 0.972 (24.7) 0.957 (24.3) Ø 0.133 (3.4) Ø 0.126 (3.2) (2X) 0.472 (12.0) 0.457 (11.6) CL 0.249 (6.35) 0.243 (6.15) + D E + CL 0.39 (1.00) 0.34 (0.85) 0.755 (19.2) 0.745 (18.9) 0.129 (3.3) 0.119 (3.0) 0.103 (2.60) NOM Optical CL 0.433 (11.0) 0.422 (10.7) 0.125 (3.2) 0.119 (3.0) 0.315 (8.0) CL 0.250 (6.36) 0.216 (5.50) 0.350 (8.9) 0.330 (8.4) 0.350 (8.9) 0.330 (8.4) 0.055 (1.40) 0.045 (1.14) 2 3 1 5 4 0.055 (1.40) 0.045 (1.14) 0.110 (2.8) 0.091 (2.3) PIN 1 ANODE PIN 2 CATHODE • Low cost PIN 3 VCC • 0.035" apertures PIN 4 VO 0.020 (0.51) (SQ) Features PIN 5 GND NOTES: 1. Dimensions for all drawings are in inches (mm). 2. Tolerance of ± .010 (.25) on all non-nominal dimensions unless otherwise specified. • Black plastic opaque housing • Mounting tabs on housing • Choice of inverter or buffer output functions • Choice of open-collector or totem-pole output configuration • TTL/CMOS compatible output functions Description The H21L series are slotted optical switches designed for multipurpose non contact sensing. They consist of a GaAs LED and a silicon OPTOLOGIC® sensor packaged in an injection molded housing and facing each other across a .124" (3.15 mm) gap. The output is either inverting or non-inverting, with a choice of totem-pole or open-collector configuration for TTL/CMOS compatibility © 2004 Fairchild Semiconductor Corporation Page 1 of 9 11/2/04 OPTOLOGIC® OPTICAL INTERRUPTER SWITCH H21LTB H21LTI H21LOB H21LOI Part Number Definitions H21LTB Totem-pole, buffer output H21LTI Totem-pole, inverter output H21LOB Open-collector, buffer output H21LOI Open-collector, inverter output Input/Output Table Part Number LED Output H21LTB On High H21LTB Off Low H21LTI On Low H21LTI Off High H21LOB On High H21LOB Off Low H21LOI On Low H21LOI Off High © 2004 Fairchild Semiconductor Corporation Page 2 of 9 11/2/04 OPTOLOGIC® OPTICAL INTERRUPTER SWITCH H21LTB H21LTI H21LOB H21LOI Schematics ANODE (1) VOLTAGE REGULATOR VCC (3) H21LTB LA VOUT (4) CATHODE (2) ANODE (1) Totem-Pole Output Buffer GND (5) VOLTAGE REGULATOR VCC (3) H21LTI LA VOUT (4) CATHODE (2) ANODE (1) GND (5) VCC (3) VOLTAGE REGULATOR VOUT (4) LA CATHODE (2) ANODE (1) Totem-Pole Output inverter H21LOB Open-Collector Output Buffer GND (5) VCC (3) VOLTAGE REGULATOR VOUT (4) LA CATHODE (2) © 2004 Fairchild Semiconductor Corporation H21LOI Open-Collector Output Inverter GND (5) Page 3 of 9 11/2/04 OPTOLOGIC® OPTICAL INTERRUPTER SWITCH H21LTB H21LTI H21LOB H21LOI Absolute Maximum Ratings (TA = 25°C unless otherwise specified) Parameter Symbol Rating Units Operating Temperature TOPR -40 to +85 °C Storage Temperature TSTG -40 to +85 °C Soldering Temperature (Iron)(3,4,5,6) TSOL-I 240 for 5 sec °C Soldering Temperature (Flow)(3,4,6) TSOL-F 260 for 10 sec °C Continuous Forward Current IF 50 mA Reverse Voltage VR 6 V Power Dissipation(1) PD 100 mW Output Current IO 50 mA Supply Voltage VCC 4.0 to 16 V Output Voltage VO 30 V PD 150 mW Input (Emitter) Output (Sensor) Power Dissipation(2) © 2004 Fairchild Semiconductor Corporation Page 4 of 9 11/2/04 OPTOLOGIC® OPTICAL INTERRUPTER SWITCH H21LTB H21LTI H21LOB H21LOI Electrical/Optical Characteristics (TA =25°C) Parameter Test Conditions Symbol Min. Typ Max. Units Input (Emitter) Forward Voltage IF = 20 mA VF — 1.5 V Reverse Leakage Current VR = 5 V IR — 10 µA VCC = 5 V ICC — 5 mA Low Level Output Voltage H21LTB, H21LOB IF = 0 mA, VCC = 5 V, RL = 100 Ω VOL — 0.4 V Low Level Output Voltage H21LTI, H21LOI IF = 15 mA, VCC = 5 V, RL = 360 Ω VOL — 0.4 V High Level Output Voltage H21LTB IF = 15 mA, VCC = 5 V, IOH = -800 µA VOH 2.4 — V High Level Output Voltage H21LTI IF = 0 mA, VCC = 5 V, IOH = -800 µA VOH 2.4 — V High Level Output Current H21LOB IF = 0 mA, VCC = 5 V, IOH = -800 µA IOH 100 µA High Level Output Current H21LOI IF = 0 mA, VCC = 5 V, VOH = 30 V IOH — 100 µA Turn on Threshold Current VCC = 5 V, RL = 360 Ω IF(+) — 15 mA Turn off Threshold Current VCC = 5 V, RL = 360 Ω IF(-) 0.50 — mA Output (Sensor) Supply Current Coupled IF(+) / IF(-) 1.2 Propagation Delay VCC = 5 V, RL = 360 Ω (See Fig, 9) tPLH, tPHL 5 µs Output Rise and Fall Time VCC = 5 V, RL = 360 Ω (See Fig, 9) tr, tf 70 ns Hysteresis Ratio Notes: (Applies to Max Ratings and Characteristics Tables.) 1. Derate power dissipation linearly 1.67 mW/°C above 25°C. 2. Derate power dissipation linearly 2.50 mW/°C above 25°C. 3. RMA flux is recommended. 4. Methanol or isopropyl alcohols are recommended as cleaning agents. 5. Soldering iron 1/16" (1.6mm) from housing. 6. As long as leads are not under any stress or spring tension. © 2004 Fairchild Semiconductor Corporation Page 5 of 9 11/2/04 OPTOLOGIC® OPTICAL INTERRUPTER SWITCH H21LTB H21LTI H21LOB Figure 1. Output Voltage vs. Input Current (Inverters) Figure 2. Output Voltage vs. Input Current (Buffers) 6 6 VCC = 5 V RL = 270 Ω TA = 25˚C VOH 4 3 IF (OFF) VCC = 5 V RL = 270 Ω TA = 25˚C 5 VO- Output Voltage (V) VO- Output Voltage (V) 5 IF (ON) 2 VOH 4 3 IF (OFF) IF (ON) 2 1 1 VOL VOL 0 0 0 1 2 3 4 0 5 1 2 IF - Input Current (mA) 3 4 5 IF - Input Current (mA) Figure 3. Normalized Threshold Current vs. Shield Distance Figure 4. Normalized Threshold Current vs. Supply Voltage 10 1.6 Black Shield + E D + d 0 d 0 Normalized to: VCC = 5 V IF = 20 mA Pulsed Pulse Width = 100 µs Duty Cycle = 0.1% 1 0 1 Normalized to: Turn ON Threshold VCC = 5 V TA = 25˚C Black Shield IF - Normalized Threshold Current IF(ON) - Normalized Threshold Current H21LOI 2 3 4 5 6 7 1.2 IF (ON) 1.0 0.8 IF (OFF) 0.6 0.4 0.2 8 d - Distance (mm) © 2004 Fairchild Semiconductor Corporation 1.4 0.0 0 2 4 6 8 10 12 14 16 VCC - Supply Voltage (V) Page 6 of 9 11/2/04 OPTOLOGIC® OPTICAL INTERRUPTER SWITCH H21LTB H21LTI H21LOB Figure 5. Normalized Threshold Current vs. Ambient Temperature H21LOI Figure 6. Forward Current vs. Forward Voltage 100 TA = 25˚C Normalized to: VCC = 5 V TA = 25˚C 1.6 80 IF - Forward Current (mA) IF - Normalized Threshold Current 1.8 1.4 IF (OFF) 1.2 IF (ON) 1.0 IF (ON) 0.8 IF (OFF) 0.6 60 40 20 0.4 0.2 0 1.0 1.1 1.2 0.0 -40 -20 0 20 40 60 80 1.3 1.4 1.5 1.6 VF - Forward Voltage (V) 100 TA - Ambient Temperature (˚C) Figure 7. Low Output Voltage vs. Output Current Figure 8. Response Time vs. Forward Current 5 1 VCC = 5 V RL = 270 Ω TA = 25˚C IF Pulsed T = 10 ms Duty Cycle = 50% 4 Response Delay Time (us) VOL- Output Voltage, Low (V) VCC = 5 V TA = 25˚C IF = 10 mA 0.1 3 TPLH 2 TPHL 1 0 0.01 1 0 10 © 2004 Fairchild Semiconductor Corporation 5 10 15 20 IF - Forward Current (mA) IO - Output Current (mA) Page 7 of 9 11/2/04 OPTOLOGIC® OPTICAL INTERRUPTER SWITCH H21LTB H21LTI H21LOB Figure 9. Switching Speed Test Circuit H21LOI Figure 10. Typical Operating Circuit C2 VCC 5V R IN R1 R2 .1 uf bypass Pulse Generator VO = 5V f = 10 KHz d.c. = 50% RL + V IN - C1 VO .1 uf bypass GND GND R 1 = 360 Ω R 2 = 180 Ω C 1 = 15 pf C 2 = 20 pf C 1 and C2 include probe and stray wire capacitance clude probe and apacitance Figure 11. Switching Times Definition for Buffers Figure 12. Switching Times Definition for Inverters 50% 50% 0 mA 0 mA t PLH t PHL Output VO 90% tr VOH 10% 10% 90% 90% 10% VOL tf © 2004 Fairchild Semiconductor Corporation 90% Output VO 50% 10% VOL t PLH t PHL VOH tf Page 8 of 9 tr 11/2/04 OPTOLOGIC® OPTICAL INTERRUPTER SWITCH H21LTB H21LTI H21LOB H21LOI DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. © 2004 Fairchild Semiconductor Corporation 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. Page 9 of 9 11/2/04