ISOCOM LTD: BSI9000 and CECC20000 Approved Manufacturer

Hutton Close, Crowther Ind Est, Washington, Tyne & Wear NE38 0AH, England
Email: enquiry@isocomoptocouplers.com - Tel: +44 (0)191 4166546 - Fax: +44 (0)191 4155055

Circuit and Package
Features
Description
Absolute Maximum Ratings
Recommended Operating Conditions
Electrical Characteristics
Reliability and Approvals

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CSM168, CSM168/L2
High Speed Hermetically Sealed Ceramic Optocoupler

Circuit and Package

Features

High density hermetically sealed 16 lead flat pack
High Speed: Typ. 1 Mbit/s (0.8µs max)
1500 Vdc withstand test voltage
High radition immunity
Performance guaranteed over -55°C to +125°C ambient temperature range
3 MHz bandwidth
Logic compatible

Description

The CSM168/L2 is subject to 100% high reliability screen.

Absolute Maximum Ratings

Storage Temperature:
Operating Temperature:
Lead Soldering:
-65°C to +150°C
-55°C to +125°C
260°C for 10s, 1.6mm below seating plane

Input Diode

Peak forward current:
Average forward current:
Reverse voltage:
Power Dissipation:
Storage temperature:
Operating temperature:
Solder temperature:
40mA ( <=1ms duration)
20mA
3V
36mW
-65°C to +150°C
-55°C to +125°C
260°C for 10s

Output Detector

Supply voltage Vcc:
Average current Io:
Peak current Io:
Voltage Vo:
Emitter-base rev. voltage BVebo:
Base current Ib:
Collector power dissipation:
-0.5V to 20V
8mA
16mA
-0.5V to 20V
3V
5mA
50mW

Recommended Operating Conditions

SYMBOL PARAMETER MIN MAX UNIT
IFL Input Current Low Level
250 µA
IFH Input Current High Level 16 20 µA
VCC Supply Voltage Output 2 18 V

Electrical Characteristics

(Ta=-55° to +125°C u.o.s.) *All typical values Vcc=5V, Ta=25°C

PARAMETER SYMBOL TEST CONDITIONS MIN TYP* MAX UNIT NOTES
Current Transfer Ratio CTR IF=16mA, VO=0.4V, VCC=4.5V 9 20
% 1, 2
Logic High Output Current IOH IF=0, IF (other channel)=20mA, VO=VCC=18V
30 100 µA 1
Output Leakage Current IOH IF=250µA, IF (other channel)=20mA, VO=VCC=18V 70 250
Logic Low Supply Current ICCL IF1=IF2=20mA, VCC=18V
30 200 µA
Logic High Supply Current ICCH IF=0, IF (other channel)=20mA, VCC=18V 0.4 10 µA
Input Forward Voltage VF IF=20mA
1.45 1.8 V
Input Reverse Breakdown Voltage BVR IR=10µA 3

V
I/O Insulation Leakage Current II-O RH=45%, TA=25°C, t=5s, VI-O=1500Vdc

1.0 µA 3, 9
Propagation Delay to Logic High Output tPLH RL=8.2kohm, CL=50pF, IF=16mA, VCC=5V
2.0 6.0 µs 1
Propagation Delay to Logic Low Output tPHL 0.4 2.0 µs

Typical Characteristics

Each channel, u.o.s. (Ta=25°C, Vcc=5V)
SYMBOL PARAMETER CONDITIONS
TYP
UNIT NOTES
dVF/dTA Temperature Coefficient of Forward Voltage IF=20mA -1.9 mV/°C 1
CIN Input Capacitance VF=0, f=1MHz 125 pF
RI-O Resistance (Input - Output) VI-O=500Vdc 1E12 ohm
CI-O Capacitance (Input-Output) f=1MHz 1.0 pF 1, 4
II-I Input-Input Insulation Leakage Current Relative Humidity=45%, VH=500Vdc, t=5s 1 pA 5
CI-I Capacitance Input - Input f=1MHz 0.6 pF 5
hFE Transistor DC Current Gain VO=5V, IO=3mA 130
1
dIO/dIF Small Signal Current Transfer Ratio VCC=5V, VO=2V 20 %
CMH Common Mode Transient Immunity at Logic High Level Output VCM=10Vp-p, RL=8.2kohm, IF=0, VO(min)=2.0V 1000 V/µs 1, 6
CML Common Mode Transient Immunity at Logic Low Level Output VCM=10Vp-p, RL=8.2kohm, IF=16mA, VO(min)=0.8V -1000 1, 7
BW Bandwidth RL=100ohm 2 MHz 8

Notes

1. Each Channel.
2. Current Transfer Ratio is defined as the ratio of output collector current, Io, to the forward LED input current, If, times 100%. CTR is known to degrade slightly over the unit's lifetime as a function of input current, termperature, signal duty cycle and system on time. It is recommended that designers allow at least 20-25% guardband for CTR degradation.
3. Measured between pins 1 through 8 shorted together and pins 9 through 16 shorted together.
4. Measured between each input pair shorted together and the output pins for that channel shorted together.
5. Measured between pins 3 and 4 shorted together, and pins 7 and 8 shorted together.
6. CMh is the steepest slope (dV/dt) on the leading edge of the common mode pulse, Vcm, for which the output will remain in the logic high state (ie Vo>2.0V).
7. CMl is the steepest slope (dV/dt) on the trailing edge of the common mode pulse, Vcm, for which the output will remain in the logic low state (ie Vo<0.8V).
8. Bandwidth is the frequency at which the AC output voltage is 3 dB below the low frequency asymptote.
9. This is a momentary withstand test, not an operating condition.

Reliability and Approvals

As manufacturer of high reliability optocouplers Isocom Ltd's manufacturing plant at North Shields, England, has site approval to BS9000 (registered number 1294/M) and CECC20000 (registered 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.

Isocom takes great effort to ensure accurate data, but regrettably cannot be held liable for any error on its website. Visit File Lists to confirm old printouts are up-to-date.

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