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PDF HEF4543B Data sheet ( Hoja de datos )
| Número de pieza | HEF4543B | |
| Descripción | BCD to 7-segment latch/decoder/driver | |
| Fabricantes | NXP Semiconductors | |
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HEF4543B
BCD to 7-segment latch/decoder/driver
Rev. 7 — 1 April 2016
Product data sheet
1. General description
The HEF4543B is a BCD to 7-segment latch/decoder/driver for liquid crystal and LED
displays. It has four address inputs (D0 to D3), an active LOW latch enable input (LE), an
active HIGH blanking input (BL), an active HIGH phase input (PH) and seven buffered
segment outputs (Qa to Qg).
The circuit provides the function of a 4-bit storage latch and an 8-4-2-1 BCD to 7-segment
decoder/driver. It can invert the logic levels of the output combination. The phase (PH),
blanking (BL) and latch enable (LE) inputs are used to reverse the function table phase,
blank the display and store a BCD code, respectively.
For liquid crystal displays, a square-wave is applied to PH and the electrical common
back-plane of the display. The outputs of the device are directly connected to the
segments of the liquid crystal.
It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS
(usually ground). Unused inputs must be connected to VDD, VSS, or another input.
2. Features and benefits
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Specified from 40 C to +85 C
Complies with JEDEC standard JESD 13-B
3. Ordering information
Table 1. Ordering information
All types operate from 40 C to +85 C
Type number
Package
Name
Description
HEF4543BT
SO16
plastic small outline package; 16 leads; body width 3.9 mm
Version
SOT109-1
1 page  
NXP Semiconductors
HEF4543B
BCD to 7-segment latch/decoder/driver
6. Functional description
Table 3. Function table [1]
Inputs
Outputs
LE BL PH [2] D3 D2 D1 D0 Qa Qb Qc Qd Qe Qf
XHL XXXXL L L L L L
HL L L L L L HHHHHH
HL L L L L HL HHL L L
HL L L L HL HHL HHL
HL L L L HHHHHHL L
HL L L HL L L HHL L H
HL L L HL HHL HHL H
HL L L HHL HL HHHH
HL L L HHHHHHL L L
HL L HL L L HHHHHH
HL L HL L HHHHHL H
HL L HL HXL L L L L L
HL L HHXXL 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.
Display
Qg
L blank
L0
L1
H2
H3
H4
H5
H6
L7
H8
H9
L blank
L blank
n.c
as above
Fig 4. Seven segment digital display with segment designation
7. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
VDD supply voltage
VI input voltage
II/O input/output current
Tstg storage temperature
D
IJ E
HF
G
DDM
Min
0.5
0.5
-
65
Max
+18
VDD + 0.5
10
+150
Unit
V
V
mA
C
HEF4543B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
5 of 16
5 Page 
NXP Semiconductors
HEF4543B
BCD to 7-segment latch/decoder/driver
+()%
RXWSXW
3+
966
FRPPRQFDWKRGH
/('
+()%
RXWSXW
3+
DDH
9''
a. common cathode
b. common anode
Bipolar transistors may be added for gain where VDD 10 V or IO 10 mA.
Fig 8. Connection to LED display readout
9'' FRPPRQDQRGH
/('
DDH
DSSURSULDWH
YROWDJH
+()%
RXWSXW
3+
RQHRIVHYHQ
VHJPHQWV
FRPPRQ
EDFNSODQH
VTXDUHZDYH
966WR9''
DDH
Fig 9. Connection to LCD readout
+()%
RXWSXW
3+
966
DDH
Fig 10. Connection to incandescent display readout
DSSURSULDWH
YROWDJH
+()%
RXWSXW
3+
966
DDH
Fig 11. Connection to gas discharge display readout
+()%
RXWSXW
3+
966
WR
ILODPHQW
VXSSO\
966RUDSSURSULDWH
YROWDJHEHORZ966
DDH
Fig 12. Connection to fluorescent display readout
HEF4543B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
11 of 16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet HEF4543B.PDF ] | |
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