74AXP2G34GS datasheet(6/16 Pages) NEXPERIA

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74AXP2G34

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Product data sheet

Rev. 1 — 11 November 2015

6 of 16

Nexperia

74AXP2G34

Low-power dual buffer

11. Dynamic characteristics

[1]

All typical values are measured at nominal VCC.

[2]

tpd is the same as tPLH and tPHL.

[3]

For additional propagation delay values at different load capacitances, see Figure 7 to Figure 11.

[4]

tt is the same as tTHL and tTLH.

[5]

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.

Table 8.

Dynamic characteristics

Voltages are referenced to GND (ground = 0 V); for test circuit, see Figure 12.

Symbol Parameter

Conditions

Tamb = 25 C

Tamb = 40 C to +85 C Unit

Min

Typ[1]

Max

Min

Max

tpd

propagation delay nA to nY; see Figure 6

[2][3]

VCC = 0.75 V to 0.85 V

110

VCC = 1.1 V to 1.3 V

1.7

4.1

6.9

1.7

7.2

VCC = 1.4 V to 1.6 V

1.4

3.0

4.8

1.4

5.0

VCC = 1.65 V to 1.95 V

1.2

2.5

3.9

1.1

4.2

VCC = 2.3 V to 2.7 V

1.0

2.0

2.9

0.9

3.1

transition time

VCC = 2.7 V; see Figure 6

[4]

1.0

input capacitance

VI = 0 V or VCC;

VCC = 0 Vto2.75V

-0.5

output

capacitance

VO = 0 V; VCC = 0 V

1.0

CPD

power dissipation

capacitance

fi = 1 MHz; VI =0 VtoVCC

[5]

VCC = 0.75 V to 0.85 V

2.3

VCC = 1.1 V to 1.3 V

2.4

VCC = 1.4 V to 1.6 V

2.4

VCC = 1.65 V to 1.95 V

2.5

VCC = 2.3 V to 2.7 V

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