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74ABT845 Fiches technique(PDF) 5 Page - NXP Semiconductors |
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74ABT845 Fiches technique(HTML) 5 Page - NXP Semiconductors |
5 / 7 page Philips Semiconductors Product specification 74ABT845 8-bit bus interface latch with set and reset (3-State) 1995 Sep 06 5 AC CHARACTERISTICS GND = 0V, tR = tF = 2.5ns, CL = 50pF, RL = 500Ω LIMITS SYMBOL PARAMETER WAVEFORM Tamb = +25oC VCC = +5.0V Tamb = -40 to +85oC VCC = +5.0V ±0.5V UNIT Min Typ Max Min Max tPLH tPHL Propagation delay Dn to Qn 1 1.0 2.2 3.9 5.4 5.4 6.8 1.0 2.2 6.2 7.8 ns tPLH tPHL Propagation delay LE to Qn 2 2.0 2.8 5.1 6.4 6.6 7.9 2.0 2.8 7.5 8.9 ns tPLH tPHL Propagation delay PRE to Qn 1 2.2 3.0 4.9 5.3 6.6 6.8 2.2 3.0 7.8 7.4 ns tPLH tPHL Propagation delay MR to Qn 1 2.4 3.1 4.9 5.9 6.4 7.3 2.4 3.1 7.3 8.5 ns tPZH tPZL Output enable time OEn to Qn 4 5 1.0 2.0 3.8 4.7 5.4 6.1 1.0 2.0 6.3 6.7 ns tPHZ tPLZ Output disable time OEn to Qn 4 5 1.9 2.2 4.6 4.7 6.2 6.4 1.9 2.2 7.2 7.0 ns AC SETUP REQUIREMENTS GND = 0V, tR = tF = 2.5ns, CL = 50pF, RL = 500Ω LIMITS SYMBOL PARAMETER WAVEFORM Tamb = +25oC VCC = +5.0V Tamb = -40 to +85oC VCC = +5.0V ±0.5V UNIT Min Typ Min ts(H) ts(L) Setup time, High or Low Dn to LE 3 2.8 3.5 1.0 1.4 2.8 3.5 ns th(H) th(L) Hold time, High or Low Dn to LE 3 1.0 1.0 –1.2 –0.6 1.0 1.0 ns tw(H) LE pulse width, High 3 3.0 1.5 3.0 ns tw(L) PRE pulse width, Low 6 3.5 2.0 3.5 ns tw(L) MR pulse width, Low 6 2.8 1.3 2.8 ns trec PRE recovery time 6 3.0 1.4 3.0 ns trec MR recovery time 6 3.4 1.6 3.4 ns |
Numéro de pièce similaire - 74ABT845 |
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Description similaire - 74ABT845 |
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