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HCPL-5400 Fiches technique(PDF) 11 Page - Agilent(Hewlett-Packard) |
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HCPL-5400 Fiches technique(HTML) 11 Page - Agilent(Hewlett-Packard) |
11 / 12 page 1-534 MIL-PRF-38534 Class H, Class K, and DESC SMD Test Program Hewlett-Packard’s Hi-Rel Opto- couplers are in compliance with MIL-PRF-38534 Classes H and K. Class H devices are also in compliance with DESC drawings 5962-89570, and 5962-89571. Testing consists of 100% screen- ing and quality conformance inspection to MIL-PRF-38534. Data Rate and Pulse- Width Distortion Definitions Propagation delay is a figure of merit which describes the finite amount of time required for a system to translate information from input to output when shifting logic levels. Propagation delay from low to high (tPLH) specifies the amount of time required for a system’s output to change from a Logic 0 to a Logic 1, when given a stimulus at the input. Propagation delay from high to low (tPHL) specifies the amount of time required for a system’s output to change from a Logic 1 to a Logic 0, when given a stimulus at the input (see Figure 5). When tPLH and tPHL differ in value, pulse width distortion results. Pulse width distortion is defined as |tPHL -tPLH| and determines the maximum data rate capability of a distortion- limited system. Maximum pulse width distortion on the order of 25-35% is typically used when specifying the maximum data rate capabilities of systems. The exact figure depends on the particular application (RS-232, PCM, T-1, etc.). These high performance opto- couplers offer the advantages of specified propagation delay (tPLH, tPHL), and pulse width distortion (|tPLH -t PHL|) over temperature and power supply voltage ranges. Figure 13. Recommended HCPL-5400 Interface Circuit. GND VCC HCPL-5400 226 Ω VCC1 = +5 V TTL LSTTL STTL HCMOS TOTEM POLE OUTPUT GATE (e.g. 54AS1000) DATA OUT 2 DATA IN 1 GND 2 Y 0.1 µF 274 Ω 30 pF A GND 1 Y = A VCC2 = 5 V Applications |
Numéro de pièce similaire - HCPL-5400 |
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Description similaire - HCPL-5400 |
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