Page 1
K814P/ K824P/ K844P
Optocoupler with Phototransistor Output
Description
The K814P/ K824P/ K844P consist of a phototransistor optically coupled to 2 gallium arsenide
infrared-emitting diodes (reversed polarity) in an
4-lead up to 16-lead plastic dual inline package.
The elements are mounted on one leadframe using
a coplanar technique, providing a fixed distance
between input and output for highest safety
requirements.
Applications
Feature phones, answering machines, PABX,
fax machines
Vishay Telefunken
14925
Coll. Emitter
Features
D
Endstackable to 2.54 mm (0.1’) spacing
D
DC isolation test voltage V
D
Low coupling capacitance of typical 0.3 pF
D
Current Transfer Ratio (CTR) of typical 100%
D
Low temperature coefficient of CTR
D
Wide ambient temperature range
D
U nderwriters L aboratory (UL) 1577 recognized,
file number E-76222
D
CSA (C–UL) 1577 recognized, file number
E-76222 – Double Protection
D
Coupling System U
= 5 kV
IO
Anode Cath.
4 PIN
8 PIN
16 PIN
C
Order Instruction
Ordering Code CTR Ranking Remarks
K814P < 20% 4 Pin Single channel
K824P < 20% 8 Pin Dual channel
K844P < 20% 16 Pin Quad channel
13947
Rev. A4, 11–Jan–99 161
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K814P/ K824P/ K844P
Vishay Telefunken
Absolute Maximum Ratings
Input (Emitter)
Parameter Test Conditions Symbol Value Unit
Reverse voltage V
Forward current I
Forward surge current tp ≤ 10 m s I
Power dissipation T
Junction temperature T
Output (Detector)
Parameter Test Conditions Symbol Value Unit
Collector emitter voltage V
Emitter collector voltage V
Collector current I
Peak collector current tp/T = 0.5, tp ≤ 10 ms I
Power dissipation T
Junction temperature T
≤ 25° C P
amb
≤ 25° C P
amb
R
F
FSM
V
CEO
ECO
C
CM
V
6 V
±60 mA
±1.5 A
100 mW
j
125
°
C
70 V
7 V
50 mA
100 mA
150 mW
j
125
°
C
Coupler
Parameter Test Conditions Symbol V alue Unit
AC Isolation test voltage (RMS) t = 1 min VIO
Total power dissipation T
Operating ambient temperature
range
Storage temperature range T
Soldering temperature 2 mm from case, t ≤ 10 s T
1)
Related to standard climate 23/50 DIN 50014
≤ 25° C P
amb
T
tot
amb
stg
sd
1)
5 kV
250 mW
–40 to +100
–55 to +125
260
°
C
°
C
°
C
Rev. A4, 11–Jan–99 162
Page 3
K814P/ K824P/ K844P
Vishay Telefunken
Electrical Characteristics (T
amb
= 25° C)
Input (Emitter)
Parameter Test Conditions Symbol Min. Typ. Max. Unit
Forward voltage IF = ± 50 mA V
Reverse current VR = ± 6 V I
Output (Detector)
Parameter Test Conditions Symbol Min. Typ. Max. Unit
Collector emitter voltage IC = 100 m A V
Emitter collector voltage IE = 100 m A V
Collector dark current VCE = 20 V, IF = 0, E = 0 I
Coupler
Parameter Test Conditions Symbol Min. Typ. Max. Unit
Collector emitter
saturation voltage
Cut-off frequency IF = ± 10 mA, VCE = 5 V,
Coupling capacitance f = 1 MHz C
IF = ± 10 mA, IC = 1 mA V
R
L
= 100
W
F
R
CEO
ECO
CEO
CEsat
f
c
k
1.25 1.6 V
10
70 V
7 V
100 nA
0.3 V
100 kHz
0.3 pF
m
A
Current Transfer Ratio (CTR)
Parameter Test Conditions Type Symbol Min. Typ. Max. Unit
IC/I
F
VCE = 5 V, IF = ± 5 mA CTR 0.2 3.0
Rev. A4, 11–Jan–99 163
Page 4
K814P/ K824P/ K844P
Vishay Telefunken
Switching Characteristics
Parameter Test Conditions Symbol Typ. Unit
Delay time VS = 5 V, IC = 2 mA, RL = 100 W (see figure 1) t
Rise time
Fall time t
Storage time t
Turn-on time t
Turn-off time t
Turn-on time VS = 5 V, IF = 10 mA, RL = 1 kW (see figure 2) t
Turn-off time
d
t
r
f
s
on
off
on
t
off
3.0
3.0
4.7
0.3
6.0
5.0
9.0
18.0
m
s
m
s
m
s
m
s
m
s
m
s
m
s
m
s
+ 5 V
IC= 2 mA ;
Channel I
Channel II
W
0
RG= 50W
tp
= 0.01
T
tp= 50 m s
13343
I
I
F
F
50
W
100
Figure 1. Test circuit, non-saturated operation
0
RG= 50W
tp
= 0.01
T
tp= 50 m s
13344
I
F
IF= 10 mA
50
W
1 k
W
+ 5 V
I
C
Channel I
Channel II
adjusted through
input amplitude
Oscilloscope
RL> 1 M
W
CL< 20 pF
Oscilloscope
RL> 1 M
W
CL< 20 pF
I
F
0
I
C
100%
90%
10%
0
t
r
t
d
t
on
t
p
tion
t
d
t
r
t
(= td + tr) turn-on time
on
pulse duradelay time
rise time
96 11698
t
p
t
t
s
f
t
off
t
s
t
f
t
(= ts + tf) turn-off time
off
t
t
storage time
fall time
Figure 2. Test circuit, saturated operation
Figure 3. Switching times
Rev. A4, 11–Jan–99 164
Page 5
K814P/ K824P/ K844P
Vishay Telefunken
Typical Characteristics (T
300
Coupled device
250
200
Phototransistor
150
IR-diode
100
50
tot
P – Total Power Dissipation ( mW )
0
0 40 80 120
T
96 11700
Figure 4. Total Power Dissipation vs.
1000.0
100.0
– Ambient Temperature (
amb
°
Ambient Temperature
= 25_ C, unless otherwise specified)
amb
10000
VCE=20V
I
=0
1000
100
with open Base ( nA )
CEO
I – Collector Dark Current,
95 11026
F
10
1
02 55 07 5
T
– Ambient Temperature ( ° C )
amb
Figure 7. Collector Dark Current vs.
Ambient Temperature
100
VCE=5V
10
100
10.0
1.0
F
I – Forward Current ( mA )
0.1
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
VF – Forward Voltage ( V )96 11862
Figure 5. Forward Current vs. Forward Voltage
2.0
VCE=5V
I
=5mA
1.5
1.0
0.5
rel
CTR – Relative Current Transfer Ratio
0
–25 0 25 50
T
– Ambient Temperature ( ° C )95 11025
amb
F
75
Figure 6. Relative Current Transfer Ratio vs.
Ambient Temperature
1
0.1
C
I – Collector Current ( mA )
95 11027
0.01
0.1 1 10
IF – Forward Current ( mA )
100
Figure 8. Collector Current vs. Forward Current
100
20mA
IF=50mA
10mA
5mA
2mA
1mA
100
C
I – Collector Current ( mA )
95 10985
10
1
0.1
0.1 1 10
V
– Collector Emitter Voltage ( V )
CE
Figure 9. Collector Current vs. Collector Emitter Voltage
Rev. A4, 11–Jan–99 165
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K814P/ K824P/ K844P
Vishay Telefunken
1.0
20%
0.8
CTR=50%
0.6
0.4
0.2
0
CEsat
V – Collector Emitter Saturation Voltage ( V
11 0
95 11028
IC – Collector Current ( mA )
10%
100
Figure 10. Collector Emitter Saturation Voltage vs.
Collector Current
1000
VCE=5V
100
10
50
m
off
on
t / t – Turn on / Turn off Time ( s )
95 11031
Saturated Operation
V
=5V
40
30
20
10
S
R
=1k
W
L
0
0 5 10 15
– Forward Current ( mA )
I
F
t
off
t
on
20
Figure 12. Turn on / off Time vs. Forward Current
m
10
8
6
4
t
on
t
off
Non Saturated
Operation
V
=5V
S
R
=100
W
L
2
CTR – Current Transfer Ratio ( % )
95 11029
1
0.1 1 10
IF – Forward Current ( mA )
100
Figure 11. Current Transfer Ratio vs. Forward Current
Pin 1 Indication
Type
off
on
t / t – Turn on / Turn off Time ( s )
95 11030
0
02 4 6
– Collector Current ( mA )
I
C
10
Figure 13. Turn on / off Time vs. Collector Current
K814P
820UTK63
Date
Code
(YM)
Coupling
System
Indicator
Company
Logo
Figure 14. Marking example
15083
Production
Location
Rev. A4, 11–Jan–99 166
Page 7
Dimensions of K814P in mm
K814P/ K824P/ K844P
Vishay Telefunken
weight: ca. 0.25 g
creepage distance:y 6 mm
air path:
after mounting on PC board
y
6 mm
Dimensions of K824P in mm
weight: ca. 0.55 g
creepage distance:y 6 mm
air path:
after mounting on PC board
y
6 mm
14789
14784
Rev. A4, 11–Jan–99 167
14784
Page 8
K814P/ K824P/ K844P
Vishay Telefunken
Dimensions of K844P in mm
weight: ca. 1.0 g
creepage distance:y 6 mm
air path:
y
6 mm
after mounting on PC board
14783
Rev. A4, 11–Jan–99 168