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74HC4040 Scheda tecnica(PDF) 13 Page - NXP Semiconductors

Il numero della parte 74HC4040
Spiegazioni elettronici  12-stage binary ripple counter
PDF  24 Pages
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Produttore elettronici  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HC4040 Scheda tecnica(HTML) 13 Page - NXP Semiconductors

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74HC_HCT4040_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 14 September 2005
13 of 24
Philips Semiconductors
74HC4040; 74HCT4040
12-stage binary ripple counter
[1]
CPD is used to determine the dynamic power dissipation (PD in µW):
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.
Tamb = −40 °C to +125 °C
tPHL, tPLH
propagation delay CP to Q0
see Figure 8
VCC = 2.0 V; CL = 50 pF
-
-
225
ns
VCC = 4.5 V; CL =50pF
-
-
45
ns
VCC = 6.0 V; CL =50pF
-
-
38
ns
propagation delay Qn to Qn+1
see Figure 8
VCC = 2.0 V; CL = 50 pF
-
-
150
ns
VCC = 4.5 V; CL =50pF
-
-
30
ns
VCC = 6.0 V; CL =50pF
-
-
26
ns
tPHL
propagation delay MR to Qn
see Figure 8
VCC = 2.0 V; CL = 50 pF
-
-
280
ns
VCC = 4.5 V; CL =50pF
-
-
56
ns
VCC = 6.0 V; CL =50pF
-
-
48
ns
tTHL, tTLH
output transition time
see Figure 8
VCC = 2.0 V; CL = 50 pF
-
-
110
ns
VCC = 4.5 V; CL =50pF
-
-
22
ns
VCC = 6.0 V; CL =50pF
-
-
19
ns
tW
clock pulse width HIGH or LOW
see Figure 8
VCC = 2.0 V; CL = 50 pF
120
-
-
ns
VCC = 4.5 V; CL =50pF
24
-
-
ns
VCC = 6.0 V; CL =50pF
20
-
-
ns
master reset pulse width; HIGH
see Figure 8
VCC = 2.0 V; CL = 50 pF
120
-
-
ns
VCC = 4.5 V; CL =50pF
24
-
-
ns
VCC = 6.0 V; CL =50pF
20
-
-
ns
trec
recovery time MR to CP
see Figure 8
VCC = 2.0 V; CL =50pF
75
-
-
ns
VCC = 4.5 V; CL =50pF
15
-
-
ns
VCC = 6.0 V; CL =50pF
13
-
-
ns
fmax
maximum operating frequency
see Figure 8
VCC = 2.0 V; CL = 50 pF
4.0
-
-
MHz
VCC = 4.5 V; CL =50pF
20
-
-
MHz
VCC = 6.0 V; CL =50pF
24
-
-
MHz
Table 9:
Dynamic characteristics for type 74HC4040 …continued
GND = 0 V; tr = tf = 6 ns. For test circuit see Figure 9.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit



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