74ALVC573 datasheet(9/17 Pages) NXP

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Giải thích chi tiết về linh kiện	Octal D-type transparent latch; 3-state

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74ALVC573_3

Product data sheet

Rev. 03 — 26 October 2007

9 of 17

NXP Semiconductors

74ALVC573

Octal D-type transparent latch; 3-state

11. Waveforms

Measurement points are given in Table 8.

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

Fig 8.

Input Dn to output Qn propagation delay times

mna811

Dn input

Qn output

tPHL

tPLH

GND

VOH

VOL

Table 8.

Measurement points

Supply voltage VCC

Output

1.65 V to 1.95 V

0.5VCC

VOL + 0.15 V

VOH − 0.15 V

2.3 V to 2.7 V

0.5VCC

VOL + 0.15 V

VOH − 0.15 V

2.7 V

1.5 V

VOL + 0.3 V

VOH − 0.3 V

3.0 V to 3.6 V

1.5 V

VOL + 0.3 V

VOH − 0.3 V

Measurement points are given in Table 8.

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

Fig 9.

Latch enable (LE) pulse width and latch enable input to output (Qn) propagation delays

mna812

LE input

Qn output

tPHL

tPLH

1/fmax

VOH

GND

VOL

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