PRELIMINARY DATA SHEET
NEC’s HIGH CMR, 10 Mbps
OPEN COLLECTOR OUTPUT TYPE
5-PIN SOP 3.3V HIGH-SPEED PHOTOCOUPLER
DESCRIPTION
PS9121
The PS9121 is an optically coupled high-speed, isolator containing a GaAlAs LED on the input side and a
photodiode and a signal processing circuit on the output side on one chip.
PS9121 is specified high CMR, high CTR and pulse width distortion with operating temperature.
FEATURES
• Low Power Consumption (V
CC
:3.3V)
• Extended Vcc Operating Range to 5.5 V, Typical Performance Data included for reference
• High common mode transient immunity (CM
H
, CM
L
=
±20
kV/
µ
s TYP.)
• Pulse width distortion (| t
PHL
−
t
PLH
|
= 35 ns MIN.)
• High-speed (10 Mbps)
• High isolation voltage (BV = 2 500 Vr.m.s.)
• Open collector output
• Ordering number of taping product: PS9121-F3, F4: 2 500 pcs/reel
APPLICATIONS
• Measurement equipment
• PDP
• FA Network
California Eastern Laboratories
PS9121
PACKAGE DIMENSIONS (UNIT: mm)
3.4
+0.3
–0.1
TOP VIEW
5
4
3
1. Anode
2. Cathode
3. GND
4. V
O
5. V
CC
1
2
7.0±0.3
4.4
2.6± 0.2
0 10
0.15
+0..05
–
0.1± 0.1
1.27
0.4
+0.10
–0.05
0.25 M
0.5±0.3
MARKING
No. 1 pin Mark
Initial of NEC
(Engraved mark)
9121
N234
N
Assembly Lot
N
2 34
Week Assembled
Year Assembled
(Last 1 Digit)
Rank Code
PS9121
ORDERING INFORMATION
Part Number
PS9121
PS9121-F3
PS9121-F4
Package
5-pin SOP
Packing Style
20 pcs (Tape 20 pcs cut)
Embossed Tape 2 500 pcs/reel
Application Part
Number
PS9121
*1
*1
For the application of the Safety Standard, following part number should be used.
ABSOLUTE MAXIMUM RATINGS (T
A
= 25°C, unless otherwise specified)
°
Parameter
Diode
Forward Current
*1
Symbol
I
F
V
R
V
CC
V
O
I
O
*2
Ratings
30
5
7
7
25
40
2 500
−40
to +85
−55
to +125
Unit
mA
V
V
V
mA
mW
Vr.m.s.
°C
°C
Reverse Voltage
Detector
Supply Voltage
Output Voltage
Output Current
Power Dissipation
*3
P
C
BV
T
A
T
stg
Isolation Voltage
Operating Ambient Temperature
Storage Temperature
*1
Reduced to 0.3 mA/°C at T
A
= 25°C or more.
*2
Applies to output pin V
O
. Reduced to 1.5 mW/°C at T
A
= 65°C or more.
*3
AC voltage for 1 minute at T
A
= 25°C, RH = 60% between input and output.
RECOMMENDED OPERATING CONDITIONS
Parameter
Low Level Input Voltage
High Level Input Current
Supply Voltage
TTL (R
L
= 1 kΩ, loads)
Pull-up resistor
Symbol
V
FL
I
FH
V
CC
N
R
L
330
MIN.
0
6.3
2.7
10
TYP.
MAX.
0.8
12.5
3.6
5
4k
Ω
Unit
V
mA
V
PS9121
ELECTRICAL CHARACTERISTICS (T
A
=
−
40 to +85°C, unless otherwise specified)
Parameter
Diode
Forward Voltage
Reverse Current
Terminal Capacitance
Detector
High Level Output Current
Symbol
V
F
I
R
C
t
I
OH
Conditions
I
F
= 10 mA, T
A
= 25°C
V
R
= 3 V, T
A
= 25°C
V = 0 V, f = 1 MHz, T
A
= 25°C
V
CC
= V
O
= 3.3 V, V
F
= 0.8 mV
V
CC
= V
O
= 5.5 V, V
F
= 0.8 mV
Low Level Output Voltage
*2
MIN.
1.4
TYP.
*1
MAX.
1.8
10
Unit
V
1.65
μ
A
pF
30
1
1
0.2
0.2
4
5
7
9
2.5
2.5
10
11
80
μ
A
V
OL
V
CC
= 3.3 V, I
F
= 5 mA, I
OL
= 13 mA
V
CC
= 5.5 V, I
F
= 5 mA, I
OL
= 13 mA
0.6
V
High Level Supply Current
I
CCH
V
CC
= 3.3 V , I
F
= 0 mA, V
O
= open
V
CC
= 5.5 V , I
F
= 0 mA, V
O
= open
7
μ
A
Low Level Supply Current
I
CCL
V
CC
= 3.3 V , I
F
= 10 mA, V
O
= open
V
CC
= 5.5 V , I
F
= 10 mA, V
O
= open
10
Coupled
Threshold Input Current
(H
→
L)
Isolation Resistance
Isolation Capacitance
Propagation Delay Time
(H
→
L)
*3
I
FHL
V
CC
= 3.3 V, V
O
= 0.8 V, R
L
= 350
Ω
V
CC
= 5 V, V
O
= 0.8 V, R
L
= 350
Ω
V
I-O
= 1 kV
DC
, RH = 40 to 60%,
T
A
= 25°C
V = 0 V, f = 1 MHz, T
A
= 25°C
T
A
= 25°C
V
CC
= 3.3 V, R
L
= 350
Ω,
I
F
= 7.5 mA
T
A
= 25°C
V
CC
= 5 V, R
L
= 350
Ω,
I
F
= 7.5 mA
5
mA
R
I-O
C
I-O
t
PHL
Ω
0.6
43
75
100
36
pF
ns
Propagation Delay Time
(L
→
H)
*3
t
PLH
T
A
= 25°C
V
CC
= 3.3 V, R
L
= 350
Ω,
I
F
= 7.5 mA
T
A
= 25°C
V
CC
= 5 V, R
L
= 350
Ω,
I
F
= 7.5 mA
46
75
100
39
Rise Time
t
r
V
CC
= 3.3 V, R
L
= 350
Ω,
I
F
= 7.5 mA
V
CC
= 5 V, R
L
= 350
Ω,
I
F
= 7.5 mA
20
Fall Time
t
f
V
CC
= 3.3 V, R
L
= 350
Ω,
I
F
= 7.5 mA
V
CC
= 5 V, R
L
= 350
Ω,
I
F
= 7.5 mA
10
Pulse Width Distortion
*3
(PWD)
Propagation Delay Skew
Common Mode
Transient Immunity at
*4
High Level Output
Common Mode
Transient Immunity at
*4
Low Level Output
⏐t
PHL
−t
PLH
⏐
V
CC
= 3.3 V, R
L
= 350
Ω,
I
F
= 7.5 mA
V
CC
= 5 V, R
L
= 350
Ω,
I
F
= 7.5 mA
t
PSK
CM
H
V
CC
= 3.3 V, R
L
= 350
Ω,
I
F
= 7.5 mA
R
L
= 350
Ω,
T
A
= 25°C, I
F
= 0 mA,
V
O (MIN.)
= 2 V, V
CM
= 1 kV
R
L
= 350
Ω,
T
A
= 25°C, I
F
= 7.5 mA,
V
O (MAX.)
= 0.8 V, V
CM
= 1 kV
15
3
3
35
40
20
kV/
μ
s
CM
L
15
20
PS9121
*1
Typical values at T
A
= 25°C
*2
Because V
OL
of 2 V or more may be output when LED current input and when output supply of V
CC
= 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.
*3
Test circuit for propagation delay time
Pulse input (I
F
)
(PW = 1
µ
s,
Duty cycle = 1/10)
Input
(Monitor)
47
Ω
V
CC
= 3.3 V
0.1
µ
F
R
L
= 350
Ω
V
O
(Monitor)
C
L
= 15 pF
Output
t
PHL
t
PLH
Input
(I
F
= 7.5 mA)
50%
Remark
C
L
includes probe and stray wiring capacitance.
*4
Test circuit for common mode transient immunity
1.5 V
V
OL
SW I
F
V
CM
90%
0.1
µ
F
V
CC
= 3.3 V
R
L
= 350
Ω
V
O
(Monitor)
C
L
= 15 pF
10%
t
r
V
O
(I
F
= 0 mA)
V
O
(I
F
= 7.5 mA)
t
f
1 kV
0V
V
OH
2V
0.8 V
V
OL
V
CM
Remark
C
L
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
μ
F is used between V
CC
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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