TCST5123 Datasheet, PDF (3/7 Pages) Vishay Siliconix – Transmissive Optical Sensor with Phototransistor Output

Switching Characteristics
Parameter
Turn-on time
Turn-off time
Test Conditions
W I_C = 1 mA, V_CE = 5 V, R_L = 100 (see figure 1)
TCST5123
Vishay Telefunken
Symbol Typ.
Unit
t_on
f_off
15.0
10.0
ms
ms
I_F I_F
0
R_G = 50 W
t_{p = 0.01}
T
m t_p = 50 s
95 10890
50 W
+5V
I_C = 2 mA; adjusted through
input amplitude
100 W
Channel I
Channel II
Oscilloscope
y R_L 1 MW
x C_L 20 pF
Figure 1. Test circuit
95 10797
0.8 mm
opt. Achse
1.4 mm
7.2 mm
I_F
0
t_p
I_C
100%
90%
96 11698
t
10%
0
t_r
t_d
t
t_s
t_f
t_on
t_p
t_d
t_r
t_on (= t_d + t_r)
pulse duration
delay time
rise time
turn-on time
t_off
t_s
t_f
t_off (= t_s + t_f)
storage time
fall time
turn-off time
Figure 3. Switching times
Figure 2. Mechanical setup
Document Number 83766
Rev. A3, 08–Jun–99
www.vishay.com
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