CSM 135
ISOCOM®LTD
Small Outline
Surface Mount
Optocoupler
Transistor Output
Device
4.318 CSM135
6.223
5
4
3 2
1.651
0.635
1
6
2.286
R = .2286
1.27
2.54
1.67
0.762
0.635
Isocom Ltd supplies high reliability devices for
applications requiring an operating temperature
range of -55°C to +125°C (e.g. military
applications).
Devices supplied are approved to BS9400, and have
completed rigorous testing. Various high reliability
test options are offered.
As a manufacturer of high reliability optocouplers,
the Isocom Ltd manufacturing plant in the North
East of England has site approval to BS9000
(registration number 1294/M) and CECC20000
(registration number M/1084/CECC/UK) issued by
the British Standards Institution.
Together with CECC, BS9000 is a preferred
standard for use in European military projects.
Consequently, Isocom Ltd's approved devices are
listed in the CECC "MUAHAG" preferred products
list.
The BS9000 approval is also recognised as meeting
the equivalent criteria to those required by
BS5750/IS09000/EN29000.
The Company's customers can be assured of our
commitment to stringent quality, reliability and
inspection standards, as demonstrated by our
existing approvals. Other customer specific options
can also be offered.
Features Applications
Hermetically sealed 6 pad Telephone ring detection
leadless chip carrier
High speed; Type. 1 Mbits Military high reliability systems
(0.8µs max)
1500Vdc withstand test voltage Microprocessor system interface
Suitable for surface mount Level shifting
assembly
High radiation immunity Digital logic ground isolation
Logic compatible System test equipment
Vcc
6
Vb
5
Vo
4
Gnd
3
Anode
1
Cathode
2
Description
The CSM135 is a single channel device in a small outline package suitable for mounting in
surface mount assemblies. The device incorporates a high radiance LED and silicon phototransistor.
The isolator operational parameters are guaranteed from -55OC to +125OC.
Absolute Maximum Ratings
Storage temperature ..... -65oC to +150oC
Operating temperature ..... -55oC to +125oC
Input-to-output isolation voltage ..... ±500V DC
Input Diode Output Transistor
Forward DC current ..... 40mA Supply voltage VCC..... -0.5 to 20V
Reverse DC voltage ..... 5V Average current Io..... 8mA
Power Dissipation ..... 36mW Peak current IO..... 16mA
Voltage) VO..... -0.5 to 20V
..... Emitter-base reverse voltage BVEBO 3V
Base current IB 5mA
Collector power dissipation 40mW
Electrical Characteristics (TA = -55 to 125oC U.O.S) *All typical values at TA = 25OC
parameter symbol Test Conditions min *typ max Units
Current transfer ratio Hf(CTR) V
CC=4.5 VO=0.4
If=16mA TA=25OC
VCC=4.5 VO=0.5
If=16mA
7.0
5.0
17
15.0
%
%
Logic low output voltage VOL V
CC=4.5V IF=16mA
IO=1.44mA 0.3 0.4 V
Logic high output current IOH I
F=0 VO=VCC=15V 0.05 250 µA
Logic high supply current ICCH I
F=0 VO=OPEN
VCC=15V 0.05 5 µA
Logic low supply current ICCL V
CC=15V IF=16mA
IF=0 30 200 µA
Input forward voltage VF I
F=16mA 1.45 1.7 V
Input reverse breakdown VBR IR=10µA 3 12 V
I/O insulation leakage current IIO RH=45% TA=25OC
t=5S VIO=1500VDC 1.0 µA
Propagation delay to logic low O/P tPHL RL=1.9KΩ IF=16mA
VCC=5V 0.1 0.8 µS
Propagation delay to logic high O/P tPLH 0.3 0.8 µS
Isocom Ltd reserves the right to change the details on this specification without notice. Please consult Isocom Ltd prior to use.
Isocom Ltd cannot accept liability for any errors or omissions.
For sales enquiries, or further information, please contact our sales office at:
Isocom Ltd, Hutton Close, Crowther Industrial Estate, District 3, Washington, NE38 0AH
Tel: +44 0191 4166 546 Fax: +44 0191 4155 055 Email Isocom@isocomoptocouplers.com
Or go to the Isocom Website @: Http://www.isocom.uk.com
