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74HC648 Datasheet(PDF) 8 Page - NXP Semiconductors |
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74HC648 Datasheet(HTML) 8 Page - NXP Semiconductors |
8 / 12 page December 1990 8 Philips Semiconductors Product specification Octal bus transceiver/register; 3-state; inverting 74HC/HCT648 AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr =tf = 6 ns; CL = 50 pF SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITIONS 74HCT VCC (V) WAVEFORMS +25 −40 to +85 −40 to +125 min. typ. max. min. max. min. max. tPHL/ tPLH propagation delay An, Bn to Bn, An 14 27 34 41 ns 4.5 Fig.6 tPHL/ tPLH propagation delay CPAB, CPBA to Bn, An 25 46 58 69 ns 4.5 Fig.7 tPHL/ tPLH propagation delay SAB, SBA to Bn, An 20 38 48 57 ns 4.5 Fig.8 tPZH/ tPZL 3-state output enable time OE to An, Bn 21 40 50 60 ns 4.5 Fig.9 tPHZ/ tPLZ 3-state output disable time OE to An, Bn 20 35 44 53 ns 4.5 Fig.9 tPZH/ tPZL 3-state output enable time DIR to An, Bn 20 40 50 60 ns 4.5 Fig.10 tPHZ/ tPLZ 3-state output disable time DIR to An, Bn 21 35 44 53 ns 4.5 Fig.10 tTHL/ tTLH output transition time 5 12 15 18 ns 4.5 Fig.6 and Fig.8 tW clock pulse width HIGH or LOW CPAB or CPBA 16 7 20 24 ns 4.5 Fig.7 tsu set-up time An, Bn to CPAB, CPBA 12 2 15 18 ns 4.5 Fig.7 th hold time An, Bn to CPAB, CPBA 5 0 5 5 ns 4.5 Fig.7 fmax maximum clock pulse frequency 30 80 24 20 ns MHz Fig.7 |
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