H22L Datasheet, PDF (7/8 Pages) Fairchild Semiconductor – OPTOLOGIC OPTICAL INTERRUPTER SWITCH

Switching Speed Test Circuit
C2
R2
Pulse
Generator
VO = 5V
f = 10 KHz
d.c. = 50%
R1= 300Ω
R2= 360Ω
C1 = 15pF
C2 = 20pF
5V
R1
.1 uf
bypass
C1
GND
C1and C2 include probe and
stray wire capacitance
Typical Operating Circuit
VCC
RIN
+
V- IN
RL
.1 uF
V O _bypass
GND
Switching Test Curve for Buffers
50%
0mA
t _PLH
V_OH
Output
V_O
t _PHL
90%
10%
50%
V_OL
t_r
10%
90%
t_f
Switching Test Curve for Inverters
50%
0mA
t _PHL
V_OH
Output
V_O
10%
t _PLH
90%
V_OL
t_f
90%
10%
t_r
©1986 Fairchild Semiconductor Corporation
H22L Series Rev. 1.2
7
www.fairchildsemi.com