H21LTB Datasheet, PDF (1/8 Pages) Fairchild Semiconductor – OPTOLOGIC OPTICAL INTERRUPTER SWITCH

OPTOLOGIC® OPTICAL
INTERRUPTER SWITCH
H21LTB
H21LTI
H21LOB
H21LOI
PACKAGE DIMENSIONS
0.472 (12.0)
0.457 (11.6)
CL
Ø 0.133 (3.4)
Ø 0.126 (3.2)
(2X)
0.249 (6.35)
0.243 (6.15)
0.103 (2.60) NOM
+
D
E
+
0.755 (19.2)
0.745 (18.9)
0.129 (3.3)
0.119 (3.0)
CL
0.39 (1.00)
0.34 (0.85)
0.433 (11.0)
0.422 (10.7)
Optical
CL
0.125 (3.2)
0.119 (3.0)
0.315 (8.0)
0.295 (7.5)
0.272 (6.9)
2
1
CL
0.055 (1.40)
0.045 (1.14)
0.055 (1.40)
0.045 (1.14)
3
4
5
0.020 (0.51) (SQ)
0.110 (2.8)
0.091 (2.3)
PIN 1 ANODE
PIN 2 CATHODE
PIN 3 VCC
PIN 4 VO
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.
PART NUMBER DEFINITIONS
H21LTB
H21LTI
H21LOB
H21LOI
Totem-pole, buffer output
Totem-pole, inverter output
Open-collector, buffer output
Open-collector, inverter output
INPUT/OUTPUT TABLE
Part
Number
H21LTB
H21LTB
H21LTI
H21LTI
H21LOB
H21LOB
H21LOI
H21LOI
LED
On
Off
On
Off
On
Off
On
Off
Output
High
Low
Low
High
High
Low
Low
High
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
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
 2001 Fairchild Semiconductor Corporation
DS300294 5/29/01
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