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74F569 Fiches technique(PDF) 10 Page - NXP Semiconductors |
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74F569 Fiches technique(HTML) 10 Page - NXP Semiconductors |
10 / 14 page Philips Semiconductors Product specification 74F569 4-bit bidirectional binary synchronous counter (3-State) 1996 Jan 05 10 AC WAVEFORMS (Continued) For all waveforms, VM = 1.5V The shaded areas indicate when the input is permitted to change for predictable output performance. VM VM VM tPLZ tPZL OE Qn VOL +0.3V SF01083 Waveform 11. 3-State Output Enable Time to Low Level and Output Disable Time from Low Level TEST CIRCUIT AND WAVEFORM 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 3-State 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 SF00777 TEST SWITCH tPLZ closed tPZL closed All other open SWITCH POSITION |
Numéro de pièce similaire - 74F569 |
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Description similaire - 74F569 |
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