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HEF4556BD Datasheet(PDF) 4 Page - NXP Semiconductors |
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HEF4556BD Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 4 page January 1995 4 Philips Semiconductors Product specification Dual 1-of-4 decoder/demultiplexer HEF4556B MSI AC CHARACTERISTICS VSS = 0 V; Tamb =25 °C; CL = 50 pF; input transition times ≤ 20 ns APPLICATION INFORMATION Some examples of applications for the HEF4556B are: • Code conversion. • Address decoding. • Demultiplexing: when using the enable input as data input. VDD V SYMBOL MIN. TYP. MAX. TYPICAL EXTRAPOLATION FORMULA Propagation delays An → On 5 130 255 ns 103 ns + (0,55 ns/pF) CL HIGH to LOW 10 tPHL 50 100 ns 39 ns + (0,23 ns/pF) CL 15 35 65 ns 27 ns + (0,16 ns/pF) CL 5 105 210 ns 78 ns + (0,55 ns/pF) CL LOW to HIGH 10 tPLH 40 85 ns 29 ns + (0,23 ns/pF) CL 15 30 60 ns 22 ns + (0,16 ns/pF) CL En → On 5 120 240 ns 93 ns + (0,55 ns/pF) CL HIGH to LOW 10 tPHL 45 90 ns 34 ns + (0,23 ns/pF) CL 15 30 60 ns 22 ns + (0,16 ns/pF) CL 5 105 205 ns 78 ns + (0,55 ns/pF) CL LOW to HIGH 10 tPLH 40 80 ns 29 ns + (0,23 ns/pF) CL 15 30 60 ns 22 ns + (0,16 ns/pF) CL Output transition times 5 60 120 ns 10 ns + (1,0 ns/pF) CL HIGH to LOW 10 tTHL 30 60 ns 9 ns + (0,42 ns/pF) CL 15 20 40 ns 6 ns + (0,28 ns/pF) CL 5 60 120 ns 10 ns + (1,0 ns/pF) CL LOW to HIGH 10 tTLH 30 60 ns 9 ns + (0,42 ns/pF) CL 15 20 40 ns 6 ns + (0,28 ns/pF) CL VDD V TYPICAL FORMULA FOR P ( µW) Dynamic power 5 4400 fi +∑ (foCL) × VDD2 where dissipation per 10 18 000 fi +∑ (foCL) × VDD2 fi = input freq. (MHz) package (P) 15 43 300 fi +∑ (foCL) × VDD2 fo = output freq. (MHz) CL = load capacitance (pF) ∑ (f oCL) = sum of outputs VDD = supply voltage (V) |
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