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PRELIMINARY DATA SHEET
NEC's HIGH NOISE REDUCTION
25 Mbps CMOS OUTPUT TYPE
8-PIN DIP OPTOCOUPLER
PS9661
PS9661L
DESCRIPTION
NEC’s PS9661 and PS9661L are optically coupled isolators containing a GaAlAs LED on the input side and a CMOS
output IC on the output side.
These photocouplers are high common mode transient immunity (CMR), high-speed CMOS output type devices,
making them ideal for high-speed logic interface circuits.
The PS9661 is in a plastic DIP (Dual In-line Package) and the PS9661L is lead bending type (Gull-wing) for surface
mounting.
FEATURES
• High-speed response (25 Mbps)
• High common mode transient immunity (CMH, CML = ±20 kV/µs TYP.)
• High isolation voltage (BV = 3 750 Vr.m.s.)
• Pulse width distortion ( | tPHL tPLH| = 3 ns TYP.)
• Ordering number of tape product: PS9661L-E3, E4: 1 000 pcs/reel
APPLICATIONS
• Factory Automation Network
• Measurement equipment
• PDP
The information in this document is subject to change without notice. Before using this document, please confirm that
this is the latest version.
California Eastern Laboratories

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PS9661, PS9661L
PACKAGE DIMENSIONS (UNIT: mm)
9.25±0.25
PS9661
TOP VIEW
87 65
1. VDD1
2. VI
3. LED Anode
4. GND1
5. GND2
6. VO
7. NC
12 34
8. VDD2
7.62
6.5±0.5
0.5±0.1
0.25 M
0.88±0.1
2.54
1.25±0.15
0.84±0.43
0 to 15˚
9.25±0.25
PS9661L
TOP VIEW
87 65
12 34
1. VDD1
2. VI
3. LED Anode
4. GND1
5. GND2
6. VO
7. NC
8. VDD2
6.5±0.5
1.25±0.15
0.25 M
0.88±0.1
2.54
0.9±0.25
9.60±0.4
Preliminary Data Sheet

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MARKING EXAMPLE
No. 1 pin
Mark
PS9661
M301
Country Assembled
Type Number
Assembly Lot
M 3 01
Week Assembled
Year Assembled
(Last 1 Digit)
Rank Code
PS9661, PS9661L
Preliminary Data Sheet

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PS9661, PS9661L
ORDERING INFORMATION
Part Number
PS9661
PS9661L
PS9661L-E3
PS9661L-E4
Package
8-pin DIP
Packing Style
Magazine case 50 pcs
Embossed Tape 1 000 pcs/reel
ABSOLUTE MAXIMUM RATINGS (TA = 25°C, unless otherwise specified)
Diode
Detector
Parameter
Input Voltage
Supply Voltage
Output Voltage
Output Current
Isolation Voltage*1
Total Power Dissipation
Operating Ambient Temperature
Storage Temperature
Symbol
VI
VDD1,
VDD2
VO
IO
BV
PT
TA
Tstg
Ratings
0.5 to VDD1+0.5
0 to 5.5
0.5 to VDD2+0.5
10
3 750
150
40 to +85
40 to +125
Unit
V
V
V
mA
Vr.m.s.
mW
°C
°C
*1 AC voltage for 1 minute at TA = 25°C, RH = 60% between input and output.
RECOMMENDED OPERATING CONDITIONS (TA = 25°C)
Parameter
High Level Input Voltage
Low Level Input Voltage
Supply Voltage
Rise Time
Fall Time
Symbol
VIH
VIL
VDD1,
VDD2
tr
tf
MIN.
2.0
0
4.5
TYP.
5.0
MAX.
VDD1
0.8
5.5
100
Unit
V
V
V
ns
Preliminary Data Sheet

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PS9661, PS9661L
ELECTRICAL CHARACTERISTICS (Recommended Operating Conditions Unless Otherwise
Specified. Note That VDD1 = VDD2 = 5 V.)
Parameter
Symbol
Conditions
Diode
Low Level Supply Current IDD1L VI = 0 V
High Level Supply Current IDD1H VI = VDD1
Input Current
II VI = 0 V or VI = VDD1
Detector Output Supply Current
IDD2H VI = VDD1
High Level Output Voltage
IDD2L
VOH
VI = 0 V
IO = 20 µA, VI = VIH
Low Level Output Voltage
IO = 4 mA, VI = VIH
VOL IO = 20 µA, VI = VIL
IO = 4 mA, VI = VIL
Coupled Isolation Resistance
RI-O VI-O = 1 kVDC, RH = 40 to 60%,
TA = 25°C
Isolation Capacitance
CI-O V = 0 V, f = 1 MHz, TA = 25°C
Propagation Delay Time
(H L)
tPHL CL = 15 pF, CMOS Signal Levels
Propagation Delay Time
(L H)
tPLH
Pulse Width
Pulse Width Distortion
(PWD)
PW
| tPHL-tPLH|
Propagation Delay Skew
tPSK
Rise Time
tr
Fall Time
tf
Common Mode
Transient Immunity at
High Level Output
CMH
VI = VDD1 = VDD2 = 5V,
VO > 0.8 VDD1, VCM = 1 kV, TA = 25°C
Common Mode
Transient Immunity at
Low Level Output
CML
VI = VDD1 = VDD2 = 5V, VI =0V
VO < 0.8 VDD1, VCM = 1 kV
MIN.
10
4.4
4.0
1011
40
10
10
TYP.*1
7.5
0.15
7
5
5.0
4.8
0.01
0.32
1.3
20
23
3
9
8
20
20
MAX.
10.0
3.0
10
9
9
0.1
1.0
40
40
8
20
Unit Fig.
1
mA
2
µA 3, 4
5
mA
6
7
V
8
pF
9
ns
10
kV/µs
*1 Typical values at TA = 25°C
Preliminary Data Sheet