74HC273; 74HCT273
Philips Semiconductors
Octal D-type flip-flop with reset; positive-edge trigger
∑(CL × VCC2 × fo) = sum of outputs.
12. Waveforms
1/f
max
V
I
CP input
V
t
V
t
M
M
GND
t
t
W
W
PHL
PLH
V
OH
90%
V
Qn output
M
10%
V
OL
t
t
TLH
001aae062
THL
Measurement points are given in Table 11.
VOL and VOH are typical voltage output drop 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
V
I
V
MR input
M
GND
t
t
rec
W
V
I
CP input
V
M
GND
t
PHL
V
Qn output
M
mna464
Measurement points are given in Table 11.
VOL and VOH are typical voltage output drop 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_3
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 24 January 2006
16 of 26
NXP [ NXP ]
