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74HCT273PW View Datasheet(PDF) - Philips Electronics

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74HCT273PW Datasheet PDF : 21 Pages
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NXP Semiconductors
74HC273; 74HCT273
Octal D-type flip-flop with reset; positive-edge trigger
Table 7. Dynamic characteristics …continued
GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit, see Figure 10
Symbol Parameter
Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max Min Max
Min
Max
74HCT273
tpd
propagation
CP to Qn; see Figure 7 [1]
delay
VCC = 4.5 V
- 16 30
-
38
-
45 ns
VCC = 5.0 V; CL = 15 pF
- 15 -
-
-
-
- ns
tPHL
HIGH to LOW MR to Qn; see Figure 8
propagation
delay
VCC = 4.5 V
- 23 34
-
43
-
51 ns
VCC = 5.0 V; CL = 15 pF
- 20 -
-
-
-
- ns
tt
transition time Qn output; see Figure 7 [2]
VCC = 4.5 V
- 7 15
-
19
-
22 ns
tW
pulse width
CP input; see Figure 7
VCC = 4.5 V
16 9 -
20
-
24
- ns
MR input LOW;
see Figure 8
VCC = 4.5 V
16 8 -
20
-
24
- ns
trec
recovery time MR to CP; see Figure 8
VCC = 4.5 V
10 2 -
13
-
15
- ns
tsu
set-up time
Dn to CP; see Figure 9
VCC = 4.5 V
12 5 -
15
-
18
- ns
th
hold time
Dn to CP; see Figure 9
VCC = 4.5 V
3 4 -
3
-
3
- ns
fmax
maximum
frequency
CP input; see Figure 7
VCC = 4.5 V
30 56 -
24
-
20
- MHz
VCC = 5.0 V; CL = 15 pF
- 36 -
-
-
-
- MHz
CPD
power
per package;
[3] - 23 -
-
-
-
- pF
dissipation
VI = GND to VCC 1.5 V
capacitance
[1] tpd is the same as tPHL and tPLH.
[2] tt is the same as tTHL and tTLH.
[3] CPD is used to determine the dynamic power dissipation (PD in W).
PD = CPD VCC2 fi + (CL VCC2 fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
(CL VCC2 fo) = sum of outputs;
CL = output load capacitance in pF;
VCC = supply voltage in V.
74HC_HCT273
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 10 June 2013
© NXP B.V. 2013. All rights reserved.
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