74AHCT1G14GW,165 查看數據表（PDF） - NXP Semiconductors.

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74AHCT1G14GW,165

Single D-type flip-flop; positive-edge trigger

NXP Semiconductors. 

NXP Semiconductors

74AHC1G14; 74AHCT1G14

Inverting Schmitt trigger

5

ICC

(mA)

4

3

2

1

mna404

8

ICC

(mA)

6

4

2

mna405

0

0

1

2

3

4 VI (V) 5

0

0

2

4

VI (V)

6

Fig 12. Typical 74AHCT1G14 transfer characteristics; Fig 13. Typical 74AHCT1G14 transfer characteristics;

VCC = 4.5 V

VCC = 5.5 V

14. Application information

The slow input rise and fall times cause additional power dissipation, which can be

calculated using the following formula:

Padd = fi × (tr × ∆ICC(AV) + tf × ∆ICC(AV)) × VCC where:

Padd = additional power dissipation (µW);

fi = input frequency (MHz);

tr = input rise time (ns); 10 % to 90 %;

tf = input fall time (ns); 90 % to 10 %;

∆ICC(AV) = average additional supply current (µA).

Average additional ICC differs with positive or negative input transitions, as shown in

Figure 14 and Figure 15.

For 74AHC1G14 and 74AHCT1G14 used in relaxation oscillator circuit, see Figure 16.

Note to the application information:

1. All values given are typical unless otherwise specified.

74AHC_AHCT1G14_6

Product data sheet

Rev. 06 — 18 May 2009

© NXP B.V. 2009. All rights reserved.

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