H21LTB_04 FAIRCHILD | Alldatasheet

Document overview

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Technical content

Features

  • Low cost
  • 0.035" apertures
  • 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

H21LTB H21LTI H21LOB H21LOI 11/2/04 Page 2 of 9 © 2004 Fairchild Semiconductor Corporation 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

H21LTB H21LTI H21LOB H21LOI 11/2/04 Page 3 of 9 © 2004 Fairchild Semiconductor Corporation Schematics Open-Collector Output Buffer H21LOB CATHODE (2) GND (5) REGULATOR VOLTAGE VCC (3) VOUT (4)LA ANODE (1) ANODE (1) CATHODE (2) LA REGULATOR VOLTAGE GND (5) VOUT (4) VCC (3) ANODE (1) CATHODE (2) LA REGULATOR VOLTAGE GND (5) VOUT (4) VCC (3) ANODE (1) CATHODE (2) REGULATOR VOLTAGE LA VCC (3) VOUT (4) GND (5) Open-Collector Output Inverter H21LOI Totem-Pole Output inverter H21LTI Totem-Pole Output Buffer H21LTB

H21LTB H21LTI H21LOB H21LOI 11/2/04 Page 4 of 9 © 2004 Fairchild Semiconductor Corporation Absolute Maximum Ratings A = 25°C unless otherwise specified) Parameter Symbol Rating Units Operating Temperature T OPR -40 to +85 °C Storage Temperature T STG -40 to +85 °C Soldering Temperature (Iron) (3,4,5,6) T SOL-I 240 for 5 sec °C Soldering Temperature (Flow) (3,4,6) T SOL-F 260 for 10 sec °C Input (Emitter) Continuous Forward Current I F 50 mA Reverse Voltage V R Power Dissipation (1) P D 100 mW Output (Sensor) Output Current I O 50 mA Supply Voltage V CC 4.0 to 16 V Output Voltage V O 30 V Power Dissipation (2) P D 150 mW

H21LTB H21LTI H21LOB H21LOI 11/2/04 Page 5 of 9 © 2004 Fairchild Semiconductor Corporation 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. Electrical/Optical Characteristics A =25°C) Parameter Test Conditions Symbol Min. Typ Max. Units Input (Emitter) Forward Voltage I F = 20 mA V F — 1.5 V Reverse Leakage Current V R = 5 V I R —1 0 µ A Output (Sensor) Supply Current V CC = 5 V I CC —5 m A Coupled Low Level Output Voltage H21LTB, H21LOB I F = 0 mA, V CC = 5 V, R L = 100 Ω V OL — 0.4 V Low Level Output Voltage H21LTI, H21LOI I F = 15 mA, V CC = 5 V, R L = 360 Ω V OL — 0.4 V High Level Output Voltage H21LTB I F = 15 mA, V CC = 5 V, I OH = -800 µA V OH 2.4 — V High Level Output Voltage H21LTI I F = 0 mA, V CC = 5 V, I OH = -800 µA V OH 2.4 — V High Level Output Current H21LOB I F = 0 mA, V CC = 5 V, I OH = -800 µA I OH 100 µA High Level Output Current H21LOI I F = 0 mA, V CC = 5 V, V OH = 30 V I OH — 100 µA Turn on Threshold Current V CC = 5 V, R L = 360 Ω I F (+) —1 5 m A Turn off Threshold Current V CC = 5 V, R L = 360 Ω I F (-) 0.50 — mA Hysteresis Ratio I F (+) / I F (-) 1.2 Propagation Delay V CC = 5 V, R L = 360 Ω (See Fig, 9) t PLH , t PHL 5µ s Output Rise and Fall Time V CC = 5 V, R L = 360 Ω (See Fig, 9) t r , t f 70 ns

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. 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. 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. OPTOLOGIC ® OPTICAL INTERRUPTER SWITCH H21LTB H21LTI H21LOB H21LOI 11/2/04Page 9 of 9© 2004 Fairchild Semiconductor Corporation