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Surface Mountable? High Speed: 10 Mbd? Low Input Current Capability: 5 mA? Recognized under the Component Program of U. File No. This package occupies approximately one fourth the footprint area of the standard dual-in-line package.

The lead profile is designed to be compatible with standard surface mount processes. The output of the detector I. This unique design provides maximum ac and dc circuit isolation while achieving TTL compatibility. Isolated Line Receiver? Computer-Peripheral Interface? Microprocessor System Interface? Switching Power Supply? Ground Loop Elimination?

Pulse Transformer Replacement 0. Internal Plastic Gap Clearance 0. See note 1. Parameter Symbol Min. Units Test Conditions Fig. TA Unit Test Conditions Fig.

Notes: 1. Bypassing of the power supply line is required with a 0. F ceramic disc capacitor adjacent to each optocoupler. The total lead length between both ends of the capacitor and the isolator pins should not exceed 10 mm. Peaking circuits may produce transient input currents up to 50 mA, 50 ns maximum pulse width, provided average current does not exceed 20 mA.

Device considered a two terminal device: pins 1 and 3 shorted together, and pins 4, 5 and 6 shorted together. The tPLH propagation delay is measured from 3. The tPHL propagation delay is measured from 3. CMH is the maximum tolerable rate of rise of the common mode voltage to assure that the output will remain in a high logic state i. CML is the maximum tolerable rate of fall of the common mode voltage to assure that the output will remain in a low logic state i. High Level Output Current vs.

Low Level Output Voltage vs. Input Diode Forward Characteristic. Output Voltage vs. Forward Input current. Low Level Output Current vs. Propagation Delay vs. Pulse Input Current. Pulse Width Distortion vs. Rise and Fall Time vs. Temperature Coefficient for Forward Voltage vs. Input Current. The propagation delay from low to high tPLH is the amount of time required for an input signal to propagate to the output, causing the output to change from low to high.

Similarly, the propagation delay from high to low tPHL is the amount of time required for the input signal to propagate to the output, causing the output to change from high to low see Figure 7. PWD can be expressed in percent by dividing the PWD in ns by the minimum pulse width in ns being transmitted.

Propagation delay skew, tPSK, is an important parameter to consider in parallel data applications where synchronization of signals on parallel data lines is a concern. If the parallel data is being sent through a group of optocouplers, differences in propagation delays will cause the data to arrive at the outputs of the optocouplers at different times.

If this difference in propagation delays is large enough, it will determine the maximum rate at which parallel data can be sent through the optocouplers.

Propagation delay skew is defined as the difference between the minimum and maximum propagation delays, either tPLH or tPHL, for any given group of optocouplers which are operating under the same conditions i. As mentioned earlier, tPSK can determine the maximum parallel data transmission rate. Figure 11 is the timing diagram of a typical parallel data application with both the clock and the data lines being sent through optocouplers.

The figure shows data and clock signals at the inputs and outputs of the optocouplers. To obtain the maximum data transmission rate, both edges of the clock signal are being used to clock the data; if only one edge were used, the clock signal would need to be twice as fast.

Propagation delay skew represents the uncertainty of where an edge might be after being sent through an optocoupler.

Figure 16 shows that there will be uncertainty in both the data and the clock lines. It is important that these two areas of uncertainty not overlap, otherwise the clock signal might arrive before all of the data outputs have settled, or some of the data outputs may start to change before the clock signal has arrived. From these considerations, the absolute minimum pulse width that can be sent through optocouplers in a parallel application is twice tPSK.

A cautious design should use a slightly longer pulse width to ensure that any additional uncertainty in the rest of the circuit does not cause a problem. The tPSK specified optocouplers offer the advantages of guaranteed specifications for propagation delays, pulse-width distortion and propagation delay skew over the recommended temperature, and input current, and power supply ranges.

Input Threshold Current vs. Figure Parallel Data Transmission Example.


HCPL-M600-500E Avago Technologies US Inc., HCPL-M600-500E Datasheet








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