74HCT4040BQ View Datasheet(PDF) - NXP Semiconductors.
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74HCT4040BQ Datasheet PDF : 20 Pages
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NXP Semiconductors
74HC4040; 74HCT4040
12-stage binary ripple counter
Table 7. Dynamic characteristics …continued
GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit, see Figure 9.
Symbol Parameter Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max Min Max
Min
Max
CPD
power
VI = GND to VCC
dissipation
capacitance
[3] - 20 -
-
-
-
- pF
74HCT4040
tpd
propagation CP to Q0; see Figure 8
[1]
delay
VCC = 4.5 V
- 19 40
- 50
VCC = 5.0 V; CL = 15 pF
- 16 -
-
-
Qn to Qn+1; see Figure 8
- 60
ns
-
- ns
VCC = 4.5 V
VCC = 5.0 V; CL = 15 pF
tPHL
HIGH to LOW MR to Qn; see Figure 8
propagation
delay
VCC = 4.5 V
- 10 20
- 8-
- 23 45
- 25
-
-
- 56
-
30 ns
-
- ns
- 68
ns
tt
transition time Qn; see Figure 8
[2]
VCC = 4.5 V
- 7 15
- 19
tW
pulse width CP input, HIGH or LOW;
see Figure 8
- 22
ns
VCC = 4.5 V
16 7 -
20
-
24
- ns
MR input, HIGH;
see Figure 8
VCC = 4.5 V
16 6 -
20
trec
recovery time MR to CP; see Figure 8
VCC = 4.5 V
10 2 - 13
fmax
maximum
CP input; see Figure 8
frequency
VCC = 4.5 V
30 72 - 24
VCC = 5.0 V; CL = 15 pF
- 79 -
-
CPD
power
VI = GND to VCC
dissipation
capacitance
[3] - 20 -
-
-
24
- 15
- 20
-
-
-
-
- ns
- ns
- MHz
- MHz
- pF
[1] tpd is the same as tPHL, tPLH.
[2] tt is the same as tTHL, tTLH.
[3] CPD is used to determine the dynamic power dissipation (PD in W).
PD = CPD VCC2 fi N + (CL VCC2 fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
(CL VCC2 fo) = sum of outputs.
74HC_HCT4040
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 20 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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