74HC datasheet(6/9 Pages) PHILIPS

6 / 9 page

1997 Nov 25

Philips Semiconductors

Product speciﬁcation

Dual JK ﬂip-ﬂop with set and reset;

positive-edge trigger

74HC/HCT109

DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see

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

Output capability: standard

ICC category: flip-flops

AC CHARACTERISTICS FOR 74HCT

GND = 0 V; tr = tf = 6 ns; CL = 50 pF

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

nCP to nQ, nQ

4.5

Fig.6

tPLH

propagation delay

nSD to nQ

4.5

Fig.7

tPHL

propagation delay

nSD to nQ

4.5

Fig.7

tPHL

propagation delay

nRD to nQ

4.5

Fig.7

tPLH

propagation delay

nRD to nQ

4.5

Fig.7

tTHL/ tTLH

output transition time

4.5

Fig.6

clock pulse width

HIGH or LOW

4.5

Fig.6

set or reset pulse width

HIGH or LOW

4.5

Fig.7

trem

removal time

nSD, nRD to nCP

4.5

Fig.7

tsu

set-up time

nJ, nK to nCP

4.5

Fig.6

hold time

nJ, nK to nCP

−3

4.5

Fig.6

fmax

maximum clock

pulse frequency

MHz

4.5

Fig.6

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