74AVC4T245 Просмотр технического описания (PDF) - NXP Semiconductors.
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74AVC4T245
NXP Semiconductors.
74AVC4T245 Datasheet PDF : 25 Pages
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NXP Semiconductors
74AVC4T245
4-bit dual supply translating transceiver; 3-state
10. Dynamic characteristics
Table 9. Typical power dissipation capacitance at VCC(A) = VCC(B) and Tamb = 25 °C [1][2]
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
VCC(A) = VCC(B)
0.8 V 1.2 V 1.5 V 1.8 V
CPD
power dissipation A port: (direction nAn to 0.2
0.2
0.2
0.2
capacitance
nBn); output enabled
A port: (direction nAn to 0.2
0.2
0.2
0.2
nBn); output disabled
A port: (direction nBn to 9.5
9.7
9.8
9.9
nAn); output enabled
A port: (direction nBn to 0.6
0.6
0.6
0.6
nAn); output disabled
B port: (direction nAn to 9.5
9.7
9.8
9.9
nBn); output enabled
B port: (direction nAn to 0.6
0.6
0.6
0.6
nBn); output disabled
B port: (direction nBn to 0.2
0.2
0.2
0.2
nAn); output enabled
B port: (direction nBn to 0.2
0.2
0.2
0.2
nAn); output disabled
[1] 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 = load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
Σ(CL × VCC2 × fo) = sum of the outputs.
[2] fi = 10 MHz; VI = GND to VCC; tr = tf = 1 ns; CL = 0 pF; RL = ∞ Ω.
2.5 V
0.3
0.3
10.7
0.7
10.7
0.7
0.3
0.3
Unit
3.3 V
0.4 pF
0.4 pF
11.9 pF
0.7 pF
11.9 pF
0.7 pF
0.4 pF
0.4 pF
74AVC4T245_1
Product data sheet
Rev. 01 — 20 July 2009
© NXP B.V. 2009. All rights reserved.
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