HEF4794B Ver la hoja de datos (PDF) - NXP Semiconductors.
Número de pieza
componentes Descripción
Fabricante
HEF4794B Datasheet PDF : 18 Pages
| |||
NXP Semiconductors
HEF4794B
8-stage shift-and-store register LED driver
6. Functional description
Table 3. Function table[1]
Input
CP
OE
STR
D
L
X
X
L
X
X
H
L
X
H
H
L
H
H
H
H
H
H
Parallel output
QP0
QPn
Z
Z
Z
Z
no change no change
Z
QPn 1
L
QPn 1
no change no change
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state;
= LOW-to-HIGH clock transition; = HIGH-to-LOW clock transition.
[2] Q6S = the data in register stage 6 before the LOW to HIGH clock transition.
[3] Q7S = the data in register stage 7 before the HIGH to LOW clock transition.
Serial output
QS1[2]
QS2[3]
Q6S
no change
n.c.
Q7S
Q6S
no change
Q6S
no change
Q6S
no change
no change Q7S
clock input
data input
strobe input
output enable
input
internal Q0S
(FF0)
QP0 output
internal Q6S
(FF6)
QP6 output
serial QS1
output
serial QS2
output
Fig 5. Timing diagram
Z-state
Z-state
001aag801
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.
4 of 18
Share Link: 