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74HC251PW Fiches technique(PDF) 6 Page - NXP Semiconductors |
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74HC251PW Fiches technique(HTML) 6 Page - NXP Semiconductors |
6 / 7 page December 1990 6 Philips Semiconductors Product specification 8-input multiplexer; 3-state 74HC/HCT251 DC CHARACTERISTICS FOR 74HCT For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: standard ICC category: MSI Note to HCT types The value of additional quiescent supply current ( ∆I CC) for a unit load of 1 is given in the family specifications. To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below. AC CHARACTERISTICS FOR HCT GND = 0 V; tr = tf = 6 ns; CL = 50 pF INPUT UNIT LOAD COEFFICIENT In S0 S1,S2 OE 1.00 1.50 1.50 1.50 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 In to Y 22 35 44 53 ns 4.5 Fig.6 tPHL/ tPLH propagation delay In to Y 22 35 44 53 ns 4.5 Fig.7 tPHL/ tPLH propagation delay Sn to Y 24 44 55 66 ns 4.5 Fig.6 tPHL/ tPLH propagation delay Sn to Y 25 44 55 66 ns 4.5 Fig.7 tPZH/ tPZL 3-state output enable time OE to Y, Y 13 28 35 42 ns 4.5 Fig.7 tPHZ/ tPLZ 3-state output disable time OE to Y, Y 14 28 35 42 ns 4.5 Fig.7 tTHL/ tTLH output transition time 7 15 19 22 ns 4.5 Figs 6 and 7 |
Numéro de pièce similaire - 74HC251PW |
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Description similaire - 74HC251PW |
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