Nexperia

74HC273; 74HCT273

Octal D-type flip-flop with reset; positive-edge trigger

10.1. Waveforms and test circuit

001aae062

CP input

Qn output

tPHL

tPLH

tW

tW

VM

10%

90%

VOH

VI

GND

VOL

VM

VM

1/fmax

tTHL

tTLH

Measurement points are given in Table 8.

VOL and VOH are typical voltage output levels that occur with the output load.

Fig. 7. Propagation delay clock input (CP) to output (Qn), clock (CP) pulse width, output transition time and the

maximum clock pulse frequency

mna464

MR input

CP input

Qn output

tPHL

tW

trec

VM

VI

GND

VI

VOL

GND

VM

VM

VOH

Measurement points are given in Table 8.

VOL and VOH are typical voltage output levels that occur with the output load.

Fig. 8. Propagation delay master reset (MR) to output (Qn), pulse width master reset (MR) and recovery time

master reset (MR) to clock (CP)

74HC_HCT273

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© Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 7 — 6 September 2021

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