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PS9121-AX Datasheet(PDF) 6 Page - California Eastern Labs

Part # PS9121-AX
Description  The PS9121 is an optically coupled high-speed, active low type isolator containing a GaAlAs LED on the input side
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Manufacturer  CEL [California Eastern Labs]
Direct Link  http://www.cel.com
Logo CEL - California Eastern Labs

PS9121-AX Datasheet(HTML) 6 Page - California Eastern Labs

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PS9121
*1 Typical values at TA = 25
°C
*2 These values are reference values.
*3 Because VOL of 2 V or more may be output when LED current input and when output supply of VCC = 2.6 V or
less, it is important to confirm the characteristics (operation with the power supply on and off) during design,
before using this device.
*4 Test circuit for propagation delay time
Input
Output
1.5 V
VOL
tPHL
tPLH
(IF = 7.5 mA)
50%
47
Ω
Pulse input (IF)
VO (monitor)
VCC = 3.3 V
Input
(monitor)
0.1 F
μ
CL = 15 pF
RL = 350
Ω
(PW = 1 s,
Duty cycle = 1/10)
μ
Remark CL includes probe and stray wiring capacitance.
*5 Test circuit for common mode transient immunity
90%
10%
1 kV
0 V
VOH
2 V
0.8 V
VOL
VCM
VO
(IF = 0 mA)
VO
(IF = 7.5 mA)
tr
tf
VO (monitor)
VCC = 3.3 V
0.1 F
μ
CL = 15 pF
SW
VCM
IF
RL = 350
Ω
Remark CL includes probe and stray wiring capacitance.
USAGE CAUTIONS
1. This product is weak for static electricity by designed with high-speed integrated circuit so protect against static
electricity when handling.
2. By-pass capacitor of 0.1
μF is used between VCC and GND near device. Also, ensure that the distance between
the leads of the photocoupler and capacitor is no more than 10 mm.
3. Avoid storage at a high temperature and high humidity.
Data Sheet PN10502EJ05V0DS
6


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