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N74F646N Datasheet(PDF) 9 Page - NXP Semiconductors |
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N74F646N Datasheet(HTML) 9 Page - NXP Semiconductors |
9 / 16 page Philips Semiconductors Product specification 74F646/A/74F648/A Transceivers/registers 1990 Sep 25 9 AC ELECTRICAL CHARACTERISTICS FOR 74F648 LIMITS Tamb = +25°C Tamb = 0°C to +70°C SYMBOL PARAMETER TEST CONDITION VCC = +5.0V VCC = +5.0V ± 10% UNIT CL = 50pF, RL = 500Ω CL = 50pF, RL = 500Ω MIN TYP MAX MIN MAX fmax Maximum clock frequency Waveform 1 100 115 90 MHz tPLH tPHL Propagation delay CPAB or CPBA to An or Bn Waveform 1 5.0 5.0 7.0 7.5 9.5 9.5 4.5 4.5 11.0 11.0 ns tPLH tPHL Propagation delay An to Bn or Bn to An Waveform 3 3.0 4.0 6.0 6.0 8.5 8.5 2.5 3.5 9.5 9.5 ns tPLH tPHL Propagation delay SAB or SBA to An or Bn Waveform 2,3 4.5 4.5 7.0 6.5 8.5 8.5 4.5 4.5 10.5 9.5 ns tPZH tPZL Output enable time OE to An or Bn Waveform 5 Waveform 6 4.5 6.0 7.0 8.5 10.0 11.0 4.5 5.5 11.0 12.5 ns tPZH tPZL Output enable time DIR to An or Bn Waveform 5 Waveform 6 4.5 6.0 7.0 8.5 10.0 11.0 4.0 5.5 11.0 12.5 ns tPHZ tPLZ Output disable time OE to An or Bn Waveform 5 Waveform 6 6.0 6.0 9.0 8.5 11.5 12.0 6.0 6.0 12.5 13.5 ns tPHZ tPLZ Output disable time DIR to An or Bn Waveform 5 Waveform 6 5.0 5.0 9.0 9.0 12.5 12.5 4.5 5.0 14.0 14.0 ns AC SETUP REQUIREMENTS FOR 74F648 LIMITS Tamb = +25°C Tamb = 0°C to +70°C SYMBOL PARAMETER TEST CONDITION VCC = +5.0V VCC = +5.0V ± 10% UNIT CL = 50pF, RL = 500Ω CL = 50pF, RL = 500Ω MIN TYP MAX MIN MAX tsu (H) tsu (L) Setup time, high or low An or Bn to CPAB or CPBA Waveform 4 4.0 4.0 5.0 5.0 ns th (H) th (L) Hold time, high or low An or Bn to CPAB or CPBA Waveform 4 0 0 0 0 ns tw (H) tw (L) Pulse width, high or low CPAB or CPBA Waveform 1 3.5 6.5 4.0 7.0 ns |
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