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74AHCT14 数据表(PDF) 6 Page - NXP Semiconductors

部件名 74AHCT14
功能描述  Hex inverting Schmitt trigger
Download  16 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

74AHCT14 数据表(HTML) 6 Page - NXP Semiconductors

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74AHC_AHCT14_5
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 4 May 2009
6 of 16
NXP Semiconductors
74AHC14; 74AHCT14
Hex inverting Schmitt trigger
10. Dynamic characteristics
[1]
Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V).
[2]
tpd is the same as tPLH and tPHL.
[3]
CPD is used to determine the dynamic power dissipation (PD in µW).
PD =CPD × VCC2 × fi × N+ Σ(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;
Σ(C
L × VCC
2
× f
o) = sum of the outputs.
Table 7.
Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.
Symbol Parameter
Conditions
25
°C
−40 °C to +85 °C −40 °C to +125 °C Unit
Min
Typ[1] Max
Min
Max
Min
Max
74AHC14
tpd
propagation
delay
nA to nY; see Figure 6
[2]
VCC = 3.0 V to 3.6 V
CL = 15 pF
-
4.3
12.8
1.0
15.0
1.0
16.0
ns
CL = 50 pF
-
5.8
16.3
1.0
18.0
1.0
20.5
ns
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
3.2
8.6
1.0
10.0
1.0
11.0
ns
CL = 50 pF
-
4.2
10.6
1.0
12.0
1.0
13.5
ns
CPD
power
dissipation
capacitance
fi = 1 MHz; VI = GND to VCC
[3]
-10
-
-
-
-
-
pF
74AHCT14
tpd
propagation
delay
nA to nY; see Figure 6
[2]
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
4.0
7.0
1.0
8.0
1.0
9.0
ns
CL = 50 pF
-
5.4
8.0
1.0
9.0
1.0
10.0
ns
CPD
power
dissipation
capacitance
fi = 1 MHz; VI = GND to VCC
[3]
-12
-
-
-
-
-
pF


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