Datasheet

HEF4794B All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 7 — 16 November 2011 2 of 18
NXP Semiconductors
HEF4794B
8-stage shift-and-store register LED driver
4. Functional diagram
Fig 1. Logic symbol Fig 2. Functional diagram
15
2
OE
D
CP STR
31
QP0
QP1
QP2
QP3
QP4
QP5
QP6
QP7
QS1
QS2
9
10
4
5
6
7
14
13
12
11
001aaf111
001aag798
8-STAGE SHIFT
REGISTER
8-BIT STORAGE
REGISTER
OPEN-DRAIN
OUTPUTS
4
QP0
5
QP1
6
QP2
7
QP3
14
QP4
13
QP5
12
QP6
11
QP7
10
QS2
9
QS1
D
2
CP
3
STR
1
OE
15
Fig 3. Logic diagram
001aag799
DD
CP
CP
Q
FF 0
D
LE
Q
LATCH 0
D
CP
Q
FF 7
D
LE
Q
LATCH 7
D
CP
Q
STAGES 1 TO 6STAGE 0 STAGE 7
QP2
QP0
D QS2
QS1
LE
Q
LATCH
QP1
QP4
QP3
QP6
QP5
QP7
STR
OE