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
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
Typical
Characteristics
Reliability and Approvals
Similar Optocouplers
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1. Anode Channel 1 Input 2. Cathode Channel 1 Input 3. Cathode Channel 2 Input 4. Anode Channel 2 Input |
5. Ground 6. Channel 2 Output Vo2 7. Channel 1 Output Vo1 8. Supply Voltage Vcc |
Hermetically Sealed 8-Pin Ceramic Dual-in-Line Package
High Speed:
Typically 10 Mbits/s (90 ns max)
TTL Compatable Input and Output
High Common Mode Rejection
Performance Guaranteed Over -55°C to +125°C Ambient Temperature
Range
Current Transfer Ratio of Min 100%
1500 Vdc Withstand Test Voltage
The CD651 consists of a pair of inverting optically coupled gates, each with
a light emitting diode and a unique high gain integrated photon detector. The
output of the detector is an open collector Schottky clamped transistor.
This
unique dual coupler design provides maximum DC and AC circuit isolation between
each input and output while achieving TTL circuit compatability. The isolator
operational parameters are guaranteed from -55°C to +125°C, such that
a minimum input current of 10mA in each channel will sink a six gate fanout
(10mA) at the output with 4.5 to 5.5V Vcc applied to the detector. This
isolation and coupling is achieved with a typical propagation delay of 90ns. Surface Mount Option Available.
Military, high reliability system, telephone ring detection, microprocessor system interface, level shifting, digital logic ground isolation, current loop receiver, isolation input line receiver, system test equipment isolation, process control input/output isolation
Absolute Maximum Ratings | |
| Derating: Storage Temperature: Operating Temperature: Lead Soldering Temperature: |
No derating required up to 125°C -65°C to +150°C -55°C to +125°C 260°C for 10s, 1.6mm from case |
Input Diode (each channel) | |
| Peak forward current IF: Average Forward Current IF: Reverse Voltage VR: Power Dissipation: |
40mA (duration<=1ms, 500pps) 20mA 5V 35mW |
Output Detector (each channel) | |
| Supply Voltage VCC: Current IO: Voltage VO: Collector Power Dissipation: |
7V (1 minute max) 25mA 7V 40mW |
| PARAMETER | SYMBOL | MIN | MAX | UNIT |
| Input Current, Low Level (each channel) | IFL | 250 | µA | |
| Input Current, High Level (each channel) | IFH | 12.5 (*) | 20 | mA |
| Supply Voltage, Output | VCC | 4.5 | 5.5 | V |
| Fan Out (TTL Load) (each channel) | N | 6 |
* 12.5mA condition permits at least 20% CTR degradation guardband. Initial
switching threshold is 10mA or less.
Electrical Characteristics(Over recommended temperature Ta= -55°C to +125°C u.o.s.; all typical values at Vcc=5V, Ta=25°C each channel.) | |||||||
| SYMBOL | PARAMETER | CONDITIONS | MIN | TYP | MAX | UNIT | NOTES |
| IOH | High Level Output Current | VCC=VO=5.5V, IF=250µA | 0.5 | 250 | µA | ||
| VOL | Low Level Output Voltage | VCC=5.5V, IF=10mA, IOL(sinking)=10mA | 0.25 | 0.6 | V | 8 | |
| ICCH | High Level Supply Current | VCC=5.5V, IF=0, (both channels) | 15 | 28 | mA | 1 | |
| ICCL | Low Level Supply Current | VCC=5.5V, IF=10mA, (both channels) | 20 | 36 | mA | ||
| II-O | Input-Output Insulation Leakage Current | RH=45%, TA=25°C, t=5s, VIO=1500Vdc | 1.0 | µA | 2, 9 | ||
| VF | Input Forward Voltage | IF=20mA | 1.85 | V | |||
| IF=20mA, TA=25°C | 1.5 | 1.75 | V | ||||
| VBR | Input Reverse Breakdown Voltage | IR=10µA | 5 | 12 | V | ||
| tPLH | Propagation Delay Time to High Output Level | RL=510ohm, CL=15pF, IF=13mA, TA=25°C | 90 | ns | 4 | ||
| tPHL | Propagation Delay Time to Low Output Level | ns | 5 | ||||
| CTR | Current Transfer Ratio | VO=0.6V, IF=10mA, VCC=5.5V | 100 | 600 | % | ||
Typical Characteristics | |||||||
| SYMBOL | PARAMETER | CONDITIONS | MIN | TYP | MAX | UNIT | NOTES |
| dVF/dTA | Input Diode Temperature Coefficient | IF=10mA | -1.6 | mV/°C | |||
| RI-O | Resistance | VI-O=500V, TA=25°C | 1E12 | ohm | 2 | ||
| CI-O | Capacitance | f=1MHz | 2 | pF | |||
| CIN | Input Capacitance | VF=0, f=1MHz | 60 | pF | |||
| II-I | Input-Input Leakage Current | RH=45%, VH=500V, t=5s | 0.5 | nA | 3 | ||
| RI-I | Resistance Input - Input | VI-I=500V | 1E12 | ohm | |||
| CI-I | Capacitance Input - Input | f=1MHz | 0.6 | pF | |||
| tR | Output Rise Time (10-90%) | RL=510ohm, CL=15pF, IF=13mA | 35 | ns | |||
| tF | Output Fall Time (90-10%) | ns | |||||
| CMH | Common Mode Transient Immunity at Logic High Output Level | VCM=10V (peak), RL=510ohm, IF=0, VO(min)=2V | 1000 | V/µs | 6 | ||
| CML | Common Mode Transient Immunity at Logic Low Output Level | VCM=10V (peak), RL=510ohm, IF=10mA, VO(max)=0.8V | V/µs | 7 | |||
1. Both channel.
2. Measured between pins 1,2,3,4 shorted together and
pins 5,6,7,8 shorted together.
3. Measured between pins 1 and 2 shorted
together, and pins 3 and 4 shorted together.
4. The tPLH propagation delay
is measured from the 6.5mA point on the trailing edge of the input pulse to the
1.5V point on the trailing edge of the output pulse.
5. The tPHL propagation
delay is measured from the 6.5mA point on the leading edge of the input pulse to
the 1.5V point on the leading edge of the output pulse.
6. CMh is the
maximum tolerable common mode transient to assure that the output will remain in
a high logic state (ie. Vo > 2.0V)
7. CMl is the maximum tolerable common
mode transient to assure that the output will remain in a low logic state (ie.
Vo < 0.8V)
8. It is essential that a bypass capacitor (0.1µF,
ceramic) be connected from pin 5 to pin 8. Total lead length between both ends
of the capacitor and the isolator pins should not exceed 20mm.
9. This is a
momentary withstand test, not an operation condition.
10. In applications
where dV/dt may exceed 50000V/µs (such as static a discharge), a series
resistor Rcc should be included to protect the detector ICs from destructively
high surge currents. The recommended value is
Rcc=(1 V) / (0.6 If mA) kohm.
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 have completed rigorous testing, and various high
reliability test options are offered. The Company is developing a suitable
specification to permit release to CECC 20000.
As a manufacturer of high reliability optocouplers Isocom Ltd's
manufacturing plant in North East England, has site approval to BS9000
(registered number 1294/M) 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/ISO9000/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.