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74F647 Scheda tecnica(PDF) 8 Page - NXP Semiconductors |
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74F647 Scheda tecnica(HTML) 8 Page - NXP Semiconductors |
8 / 12 page Philips Semiconductors Product specification 74F647/74F649 Octal transceivers/registers (open-collector) 1992 Feb 28 8 TEST CIRCUIT AND WAVEFORMS tw 90% VM 10% 90% VM 10% 90% VM 10% 90% VM 10% NEGATIVE PULSE POSITIVE PULSE tw AMP (V) 0V 0V tTHL (tf ) INPUT PULSE REQUIREMENTS rep. rate tw tTLH tTHL 1MHz 500ns 2.5ns 2.5ns Input Pulse Definition VCC family 74F D.U.T. PULSE GENERATOR RL CL RT VIN VOUT Test Circuit for Open Collector Outputs DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RT = Termination resistance should be equal to ZOUT of pulse generators. tTHL (tf ) tTLH (tr ) tTLH (tr ) AMP (V) amplitude 3.0V 1.5V VM RL 7.0V SF00195 TEST SWITCH Open Collector closed All other open SWITCH POSITION |
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Descrizione simile - 74F647 |
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