74HC93 datasheet(6/7 Pages) PHILIPS

6 / 7 page

December 1990

Philips Semiconductors

Product speciﬁcation

4-bit binary ripple counter

74HC/HCT93

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

CP0, CP1

MRn

0.60

0.40

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

CP0 to Q0

4.5

Fig.6

tPHL/ tPLH

propagation delay

CP1 to Q1

4.5

Fig.6

tPHL/ tPLH

propagation delay

CP1 to Q2

4.5

Fig.6

tPHL/ tPLH

propagation delay

CP1 to Q3

4.5

Fig.6

tPHL

propagation delay

MRn to Qn

4.5

Fig.7

tTHL/ tTLH

output transition time

4.5

Fig.6

trem

removal time

MRn to CP0, CP1

4.5

Fig.7

pulse width

CP0, CP1

4.5

Fig.6

master reset pulse width

MRn

4.5

Fig.7

fmax

maximum clock pulse

frequency

CP0, CP1

MHz

4.5

Fig.6

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