HEF40192 datasheet(5/9 Pages) PHILIPS

Part #	HEF40192

Description	4-bit up/down decade counter

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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5 / 9 page

January 1995

5

Philips Semiconductors

Product speciﬁcation

4-bit up/down decade counter

HEF40192B

MSI

FUNCTION TABLE

MR

PL

CPU

CPD

MODE

H

X

reset (asyn.)

L

X

parallel load

L

H

count-up

L

H

count-down

Notes

1. H = HIGH state (the more positive voltage)

L = LOW state (the less positive voltage)

X = state is immaterial

= positive-going transition

Fig.5 State diagram.

Logic equations for terminal count:

TCU

O

0

O

3

CPU

⋅⋅

=

TCD

O0 O1 O2 O3 CPD

⋅⋅⋅⋅

=

AC CHARACTERISTICS

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

VDD

V

TYPICAL FORMULA FOR P (

µW)

Dynamic power

5

550 fi +∑(foCL) × VDD2

where

dissipation per

10

2400 fi +∑(foCL) × VDD2

fi = input freq. (MHz)

package (P)

15

6500 fi +∑(foCL) × VDD2

fo = output freq. (MHz)

CL = load capacitance (pF)

∑ (f

oCL) = sum of outputs

VDD = supply voltage (V)

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HEF40192 Datasheet(PDF) 5 Page - NXP Semiconductors

HEF40192 Datasheet(HTML) 5 Page - NXP Semiconductors

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