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74HCT4543 Datenblatt(PDF) 9 Page - NXP Semiconductors |
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74HCT4543 Datenblatt(HTML) 9 Page - NXP Semiconductors |
9 / 11 page December 1990 9 Philips Semiconductors Product specification BCD to 7-segment latch/decoder/driver for LCDs 74HC/HCT4543 Note to HCT types The value of additional quiescent supply current ( ∆ICC) for a unit load of 1 is given here. 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 =50pF INPUT UNIT LOAD COEFFICIENT D0, D1, D2 D3 BI LD PH 1.00 0.50 0.50 1.50 1.25 SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITIONS 74HCT VCC (V) OTHER +25 −40 to +85 −40 to +125 min. typ. max. min. max. min. max. tPHL/ tPLH propagation delay Dn to Qn 38 80 100 120 ns 4.5 Fig.12 tPHL/ tPLH propagation delay LD to Qn 36 68 85 102 ns 4.5 Fig.13 tPHL/ tPLH propagation delay BI to Qn 32 66 83 99 ns 4.5 Fig.14 tPHL/ tPLH propagation delay PH to Qn 24 66 83 99 ns 4.5 tTHL/ tTLH output transition time 23 50 63 75 ns 4.5 Figs 12, 13 and 14 tW LD pulse width HIGH or LOW 10 4 13 15 ns 4.5 Fig.13 tsu set-up time Dn to LD 12 4 15 18 ns 4.5 Fig.15 th hold time Dn to LD 8 2 10 12 ns 4.5 Fig.15 |
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