74ALVC14PW datasheet(7/16 Pages) PHILIPS

7 / 16 page

9397 750 14592

Product data sheet

Rev. 03 — 15 February 2005

7 of 16

Philips Semiconductors

74ALVC14

Hex inverting Schmitt trigger

11. Dynamic characteristics

[1]

Typical values are measured at Tamb = 25 °C.

[2]

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

× f

o) = sum of the outputs.

[3]

The condition is VI = GND to VCC.

12. Waveforms

Table 8:

Dynamic characteristics

Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.

Symbol Parameter

Conditions

Min

Typ

Max

Unit

Tamb = −40 °C to +85 °C [1]

tPHL,

tPLH

propagation delay nA to nY

see Figure 6

VCC = 1.65 V to 1.95 V

1.0

2.9

4.4

VCC = 1.95 V to 2.7 V

1.0

2.2

3.7

VCC = 2.7 V

1.0

2.8

3.9

VCC = 3.0 V to 3.6 V

1.0

2.4

3.4

CPD

power dissipation

capacitance per buffer

VCC = 3.3 V

[2] [3] -25

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

Fig 6.

Propagation delay input (nA) to output (nY)

Table 9:

Measurement points

Supply

Input

Output

VCC

1.65 V to 1.95 V

0.5

× V

0.5

× V

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

mna344

tPHL

tPLH

nA input

nY output

GND

VOH

VOL

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