HEF4894B データシートの表示（PDF） - NXP Semiconductors.
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HEF4894B Datasheet PDF : 19 Pages
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NXP Semiconductors
HEF4894B
12-stage shift-and-store register LED driver
5.2 Pin description
Table 2. Pin description
Symbol
Pin
D
2
QP0 to QP11 4, 5, 6, 7, 8, 9, 18, 17, 16, 15, 14, 13
QS1
11
QS2
12
CP
3
STR
1
OE
19
VDD
20
VSS
10
6. Functional description
Description
serial input
parallel output
serial output
serial output
clock input
strobe input
output enable input
supply voltage
ground (0 V)
Table 3. Function table[1]
At the positive clock edge the information in the 10th register stage is transferred to the 11th register stage and the QS output
Control
Input
Parallel output
Serial output
CP
OE
STR
D
QP0
QPn
QS1[2]
QS2[3]
L
X
X
Z
Z
Q10S
no change
L
X
X
Z
Z
no change Q11S
H
L
X
no change no change Q10S
no change
H
H
L
Z
QPn 1
Q10S
no change
H
H
H
L
QPn1
Q10S
no change
H
H
H
no change no change no change Q11S
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; = LOW-to-HIGH clock transition; = HIGH-to-LOW clock transition;
Z = high-impedance OFF-state.
[2] Q10S = the data in register stage 10 before the LOW to HIGH clock transition.
[3] Q11S = the data in register stage 11 before the HIGH to LOW clock transition.
HEF4894B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 22 November 2011
© NXP B.V. 2011. All rights reserved.
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