HEF4543B 查看數據表（PDF） - NXP Semiconductors.
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HEF4543B Datasheet PDF : 16 Pages
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NXP Semiconductors
HEF4543B
BCD to 7-segment latch/decoder/driver
7. Functional description
Table 3. Function table [1]
Inputs
Outputs
LE BL PH [2] D3 D2 D1 D0 Qa Qb Qc Qd Qe Qf
X
H
L
X
X
X
X
L
L
L
L
L
L
H
L
L
L
L
L
L
H
H
H
H
H
H
H
L
L
L
L
L
H
L
H
H
L
L
L
H
L
L
L
L
H
L
H
H
L
H
H
L
H
L
L
L
L
H
H
H
H
H
H
L
L
H
L
L
L
H
L
L
L
H
H
L
L
H
H
L
L
L
H
L
H
H
L
H
H
L
H
H
L
L
L
H
H
L
H
L
H
H
H
H
H
L
L
L
H
H
H
H
H
H
L
L
L
H
L
L
H
L
L
L
H
H
H
H
H
H
H
L
L
H
L
L
H
H
H
H
H
L
H
H
L
L
H
L
H
X
L
L
L
L
L
L
H
L
L
H
H
X
X
L
L
L
L
L
L
L
L
L
X
X
X
X
n.c.
as above
H
as above
inverse of above
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care,: n.c. = no change.
[2] For liquid crystal displays, apply a square-wave to PH;
For common cathode LED displays, select PH = LOW;
For common anode LED displays, select PH = HIGH.
Qg Display
L
blank
L
0
L
1
H
2
H
3
H
4
H
5
H
6
L
7
H
8
H
9
L
blank
L
blank
n.c
as above
Fig 4. Seven segment digital display with segment designation
8. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
VDD
VI
II/O
Tstg
Tamb
supply voltage
input voltage
input/output current
storage temperature
ambient temperature
HEF4543B_5
Product data sheet
Rev. 05 — 27 October 2009
a
fg b
e
c
d
001aaj494
Min
−0.5
−0.5
-
−65
−40
Max
Unit
+18
V
VDD + 0.5 V
±10
mA
+150
°C
+85
°C
© NXP B.V. 2009. All rights reserved.
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