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74VHCT02D Datasheet(PDF) 7 Page - NXP Semiconductors

Part No. 74VHCT02D
Description  Quad 2-input NOR gate
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Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
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74VHC_VHCT02_1
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 13 August 2009
7 of 14
NXP Semiconductors
74VHC02; 74VHCT02
Quad 2-input NOR gate
[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.
11. Waveforms
74VHCT02; VCC = 4.5 V to 5.5 V
tpd
propagation
delay
nA, nB to nY; see Figure 6
[2]
CL = 15 pF
-
3.8
5.5
1.0
6.5
1.0
7.0
ns
CL = 50 pF
-
5.1
7.5
1.0
8.5
1.0
9.5
ns
CPD
power
dissipation
capacitance
CL = 50 pF; fi = 1 MHz;
VI = GND to VCC
[3]
-
8.0
-
-
-
-
-
pF
Table 7.
Dynamic characteristics …continued
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
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 6.
Input to output propagation delays
001aah085
tPHL
tPLH
VM
VM
nY output
nA, nB input
VI
GND
VOH
VOL
Table 8.
Measurement points
Type
Input
Output
VM
VM
74VHC02
0.5VCC
0.5VCC
74VHCT02
1.5 V
0.5VCC




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