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 PHILIPS
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6 page 
December 1990 6 Philips Semiconductors Product specification 4-bit bidirectional universal shift register; 3-state 74HC/HCT40104 DC CHARACTERISTICS FOR 74HCT For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: bus driver ICC category: MSI Note to HCT types The value of additional quiescent supply current ( ∆ICC) 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 74HCT GND = 0 V; tr =tf = 6 ns; CL = 50 pF INPUT UNIT LOAD COEFFICIENT D0 to D3 DSR, DSL CP S0, S1 OE 0.35 0.35 0.35 0.70 1.40 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 CP to Qn 18 34 43 51 ns 4.5 Fig.6 tPZH/ tPZL 3-state output enable time OE to Qn 12 30 38 45 ns 4.5 Fig.8 tPHZ/ tPLZ 3-state output disable time OE to Qn 21 35 44 53 ns 4.5 Fig.8 tTHL/ tTLH output transition time 5 12 15 18 ns 4.5 Fig.6 tW clock pulse width HIGH or LOW 16 7 20 24 ns 4.5 Fig.6 tsu set-up time Dn, DSR, DSL to CP 16 8 20 24 ns 4.5 Fig.8 tsu set-up time S0, S1 to CP 20 9 25 30 ns 4.5 Fig.8 th hold time Dn, DSR, DSL to CP 2 −2 2 2 ns 4.5 Fig.8 th hold time S0, S1 to CP 2 −5 2 2 ns 4.5 Fig.8 fmax maximum clock pulse frequency 27 52 22 18 MHz 4.5 Fig.6 |
