74HC4020N datasheet(6/7 Pages) PHILIPS

6 / 7 page

September 1993

Philips Semiconductors

Product speciﬁcation

14-stage binary ripple counter

74HC/HCT4020

DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see

“74HC/HCT/HCU/HCMOS Logic Family Specifications”.

Output capability: standard

ICC category: MSI

Note to HCT types

The value of additional quiescent supply current (

∆ICC) for a unit load of 1 is given in the family specifications.

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 = 50 pF

INPUT

UNIT LOAD COEFFICIENT

0.85

1.10

SYMBOL

PARAMETER

Tamb (°C)

UNIT

TEST CONDITIONS

74HCT

VCC

(V)

WAVEFORMS

+25

−40 to +85

−40 to +125

min.

typ.

max.

min.

max.

min.

max.

tPHL/ tPLH

propagation delay

CP to Q0

4.5

Fig.7

tPHL/ tPLH

propagation delay

Qn to Qn+1

4.5

Fig.7

tPHL

propagation delay

MR to Qn

4.5

Fig.8

tTHL/ tTLH

output transition time

4.5

Fig.7

clock pulse width

HIGH or LOW

4.5

Fig.7

master reset pulse width

HIGH

4.5

Fig.8

trem

removal time

MR to CP

4.5

Fig.8

fmax

maximum clock pulse

frequency

MHz

4.5

Fig.7

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