HEF4794B Ver la hoja de datos (PDF) - NXP Semiconductors.

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componentes Descripción

Fabricante

HEF4794B

8-stage shift-and-store register LED driver

NXP Semiconductors. 

NXP Semiconductors

11. Waveforms

HEF4794B

8-stage shift-and-store register LED driver

VI

CP input

VSS

VDD

QPn output

VOL

1/fclk(max)

VM

tW

tW

tPLZ

VX

tPLH

tPZL

VY

tPHL

VOH

QS1 output

VOL

VOH

QS2 output

VOL

90 %

VM

10 %

tTLH

90 %

VM

10 %

tTLH

tPLH

tTHL

tPHL

tTHL

001aag222

Fig 6.

Parallel output measurement points are given in Table 9.

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

Propagation delay clock (CP) to output (QPn, QS1, QS2), clock pulse width and maximum clock

frequency

Table 9. Measurement points

Supply

Input

VDD

5 V to 15 V

VM

0.5VDD

Output

VM

0.5VDD

VX

0.1VO

VY

0.9VO

VI

CP input

VSS

VI

STR input

VSS

VDD

QPn output

VOL

VM

VM

tW

tPLZ

VX

tPZL

VY

001aag802

Fig 7.

Measurement points are given in Table 9.

VOL is the typical output voltage level that occurs with the output load.

Strobe (STR) to output (QPn) propagation delays and the strobe pulse width

HEF4794B

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 7 — 16 November 2011

© NXP B.V. 2011. All rights reserved.

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