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DATA SHEET
PHOTOCOUPLER
PS8821-1,-2
1 Mbps ANALOG OUTPUT TYPE
8-PIN SSOP (SO-8)
HIGH-SPEED PHOTOCOUPLER
NEPOC Series
DESCRIPTION
The PS8821-1, -2 are optically coupled isolators containing a GaAlAs LED on the light emitting diode (input side)
and a PIN photodiode and a high-speed amplifier transistor on the output side on one chip.
The PS8821-2 is suitable for high density applications.
FEATURES
• 40% reduction of mounting area (5-pin SOP × 2)
• Low power consumption (VCC = 3.3 V)
• High isolation voltage (BV = 2 500 Vr.m.s.)
• High-speed response (tPHL = 0.6 µs MAX., tPLH = 0.9 µs MAX.)
• Ordering number of tape product: PS8821-1-F3, F4: 1 500 pcs/reel
: PS8821-2-F3, F4: 1 500 pcs/reel
• Pb-Free product
APPLICATIONS
• Power over Ethernet
Computer and peripheral manufactures
• Substitutions for relays and pulse transformers
• Power supply
PIN CONNECTION
(Top View)
8765
1234
1. NC
2. Anode
3. Cathode
4. NC
5. GND
6. VO
7. NC
8. VCC
PS8802-2
8765
1234
1. Anode1
2. Cathode1
3. Cathode2
4. Anode2
5. GND
6. VO2
7. VO1
8. VCC
The information in this document is subject to change without notice. Before using this document, please confirm that
this is the latest version.
Document No. Preliminary
Date Published Feb 2005 CP(K)

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PACKAGE DIMENSIONS (UNIT: mm)
5.21±0.25
PS8821-1,-2
1.27
0.4+–00..0150 0.25 M
6.0±0.2
3.95±0.1
0.5±0.3
0.10 S
2

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ABSOLUTE MAXIMUM RATINGS (TA = 25°C, unless otherwise specified)
Parameter
Diode
Forward Current*1
Reverse Voltage
Detector Supply Voltage
Output Voltage
Output Current
Power Dissipation
Isolation Voltage*2
Operating Ambient Temperature
Storage Temperature
Symbol
IF
VR
VCC
VO
IO
PC
BV
TA
Tstg
Ratings
25
5.0
7
7
8.0
10
2 500
–55 to +100
–55 to +125
Unit
mA/ch
V/ch
V
V/ch
mA/ch
mW/ch
Vr.m.s.
°C
°C
*1 Reduced to 0.63 mA/°C at TA = 85°C or more.
*2 AC voltage for 1 minute at TA = 25°C, RH = 60% between input and output.
PS8821-1,-2
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PS8821-1,-2
ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise specified)
Diode
Detector
Coupled
Parameter
Symbol
Conditions
Forward Voltage
VF IF = 16 mA
Reverse Current
Forward Voltage
Temperature Coefficient
IR VR = 3 V
VF/TA IF = 16 mA
Terminal Capacitance
Ct V = 0 V, f = 1 MHz
High Level Output Current
IOH IF = 0 mA, VCC = VO = 3.3 V
Low Level Output Voltage VOL IF = 16 mA, VCC = 3.3 V, IOL = 2.4 mA
High Level Supply Current ICCH IF = 0 mA, VO = open, VCC = 3.3 V
(PS8821-1)
High Level Supply Current
(PS8821-2)
Low Level Supply Current ICCL IF = 16 mA, VO = open, VCC = 3.3 V
(PS8821-1)
Low Level Supply Current
(PS8821-2)
Current Transfer Ratio
CTR IF = 16 mA, VCC = 3.3V, VO = 0.4 V
Input-Output
Isolation Resistance
RI-O VI-O = 1 kVDC, RH = 40 to 60%
Insulation Resistance
RI-I VI-I = 5 VDC, RH = 40 to 60%
(Input-Input), (PS8821-2)
Input-Output
Isolation Capacitance
CI-O V = 0 V, f = 1 MHz
Insulation Capacitance
(Input-Input), (PS8821-2)
Propagation Delay Time
(H ? L)*1
Propagation Delay Time
(L ? H)*1
CI-I
tPHL IF = 10mA, VCC = 3.3 V,
RL = 1.8k, CL = 15 pF
tPLH Ta=0 100
Common Mode
Transient Immunity at
High Level Output*2
Common Mode
Transient Immunity at
Low Level Output*2
CMH IF = 0 mA, VCC = 3.3V, RL = 4.1 k,
VCM = 10V
CML IF = 16 mA, VCC = 3.3V, RL = 4.1 k,
VCM = 10V
MIN.
20
1011
107
TYP.
1.7
2.1
30
0.01
0.1
0.1
MAX.
2.2
10
Unit
V
µA
mV/° C
pF
µA
0.4 V
10 µA
0.02 20
100
200
40 %
0.6 pF
0.3
0.2 0.6 µs
0.5 0.9
kV/µs
4

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PS8821-1,-2
*1 Test circuit for propagation delay time
(PW = 1µs, Pulse input (IF)
Duty cycle = 1/10)
Input
(Monitor)
47
PS8802-1
VCC = 5 V
0.1 µF
RL = 2.2 k
VO (Monitor)
CL = 15 pF
Input
(PW = 1µs, Pulse input (IF)
Duty cycle = 1/10)
Input
(Monitor)
47
PS8802-2
VCC = 5 V
Output
0.1 µF
RL = 2.2 k
VO (Monitor)
CL = 15 pF
tPHL
tPLH
(IF = 7.5 mA)
50%
1.5 V
VOL
Remark CL is approximately 15 pF which includes probe and stray wiring capacitance.
*2 Test circuit for common mode transient immunity
IF
SW IF
PS8802-1
VCM
PS8802-2
0.1 µF
VCC = 5 V
RL = 4.1 k
VO (Monitor)
CL = 15 pF
0.1 µF
VCC = 5 V
RL = 4.1 k
VO (Monitor)
CL = 15 pF
VCM 90%
10%
tr
VO
(IF = 0 mA)
VO
(IF = 16 mA)
tf
1.5 kV
0V
VOH
2V
0.8 V
VOL
VCM
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.
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