HEF4518BP datasheet(5/7 Pages) PHILIPS

5 / 7 page

January 1995

5

Philips Semiconductors

Product speciﬁcation

Dual BCD counter

HEF4518B

MSI

AC CHARACTERISTICS

VSS = 0 V; Tamb =25 °C; input transition times ≤ 20 ns

VDD

V

TYPICAL FORMULA FOR P (

µW)

Dynamic power

5

750fi +∑ (foCL) × VDD2

where

dissipation per

10

3300 fi +∑ (foCL) × VDD2

fi = input freq. (MHz)

package (P)

15

8000 fi +∑ (foCL) × VDD2

fo = output freq. (MHz)

CL = load capacitance (pF)

∑ (f

oCL) = sum of outputs

VDD = supply voltage (V)

Fig.4 Waveforms showing recovery time for MR; minimum CP0, CP1 and MR pulse widths.

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