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74ALVC14

Hex inverting Schmitt trigger

Philips Electronics 

Philips Semiconductors

11. Dynamic characteristics

Table 8: Dynamic characteristics

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

Symbol Parameter

Conditions

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

VCC = 1.95 V to 2.7 V

VCC = 2.7 V

CPD

power dissipation

capacitance per buffer

VCC = 3.0 V to 3.6 V

VCC = 3.3 V

[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(CL × VCC2 × fo) = sum of the outputs.

[3] The condition is VI = GND to VCC.

12. Waveforms

74ALVC14

Hex inverting Schmitt trigger

Min Typ Max Unit

1.0 2.9 4.4 ns

1.0 2.2 3.7 ns

1.0 2.8 3.9 ns

1.0 2.4 3.4 ns

[2] [3] -

25

-

pF

9397 750 14592

Product data sheet

VI

nA input

GND

VOH

nY output

VOL

VM

t PHL

VM

t PLH

mna344

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

VCC

1.65 V to 1.95 V

2.3 V to 2.7 V

2.7 V

VM

0.5 × VCC

0.5 × VCC

1.5 V

3.0 V to 3.6 V

1.5 V

Output

VM

0.5 × VCC

0.5 × VCC

1.5 V

1.5 V

Rev. 03 — 15 February 2005

© Koninklijke Philips Electronics N.V. 2005. All rights reserved.

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