HEF40240BF datasheet(4/6 Pages) PHILIPS

Part #	HEF40240BF

Description	Octal inverting buffers with 3-state outputs

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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4 / 6 page

January 1995

4

Philips Semiconductors

Product speciﬁcation

Octal inverting buffers with 3-state outputs

HEF40240B

buffers

Fig.4 Typical output source current characteristic.

(1) P-channel MOS transistor conducting.

(2) P-channel MOS transistor and bipolar

n-p-n transistor conducting.

Fig.5 Schematic diagram of output stage.

AC CHARACTERISTICS

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

ALL BUFFERS SWITCHING

VDD

V

TYPICAL FORMULA FOR P (

µW)

Dynamic power

5

4 250 fi +∑ (foCL) × VDD2

where

dissipation per

10

17 000 fi +∑ (foCL) × VDD2

fi = input freq. (MHz)

package (P)

15

46 000 fi +∑ (foCL) × VDD2

fo = output freq. (MHz)

CL = load capacitance (pF)

∑ (f

oCL) = sum of outputs

VDD = supply voltage (V)

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HEF40240BF Datasheet(PDF) 4 Page - NXP Semiconductors

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