74LVC3G34 datasheet(7/14 Pages) PHILIPS

7 / 14 page

9397 750 14545

Product data sheet

Rev. 03 — 31 January 2005

7 of 14

Philips Semiconductors

74LVC3G34

Triple buffer gate

[1]

All typical values are measured at nominal VCC and Tamb =25 °C.

[2]

CPD is used to determine the dynamic power dissipation (PD in µW).

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;

∑(C

L × VCC

× f

o) = sum of outputs.

[3]

The condition is VI = GND to VCC.

13. AC waveforms

Tamb = −40 °C to +125 °C

tPHL, tPLH

propagation delay

input nA to output nY

see Figure 5

VCC = 1.65 V to 1.95 V

1.0

10.8

VCC = 2.3 V to 2.7 V

0.5

5.5

VCC = 2.7 V

0.5

6.3

VCC = 3.0 V to 3.6 V

0.5

5.1

VCC = 4.5 V to 5.5 V

0.5

4.0

Table 9:

Dynamic characteristics …continued

GND = 0 V; test circuit see Figure 6.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Measurement points are given in Table 10.

Logic levels: VOL and VOH are typical output voltage drop that occur with the output load.

Fig 5.

Input nA to output nY propagation delay times

Table 10:

Measurement points

Supply voltage

Input

Output

VCC

1.65 V to 1.95 V

0.5

× VCC

0.5

× VCC

2.3 V to 2.7 V

0.5

× V

0.5

× V

2.7 V

1.5 V

3.0 V to 3.6 V

1.5 V

4.5 V to 5.5 V

0.5

× VCC

0.5

× V

001aaa725

nA input

nY output

tPLH

tPHL

GND

VOH

VOL

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