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PDF L6450 Data sheet ( Hoja de datos )
| Número de pieza | L6450 | |
| Descripción | 28 CHANNEL INK JET DRIVER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L6450 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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L6450
28 CHANNEL INK JET DRIVER
ADVANCE DATA
40V DMOS OUTPUT BREAKDOWN
TWO DECODER OPTIONS ARE INCLUDED
PRECISE OUTPUT ENERGY
ESD OUTPUT PROTECTION WITH CLAMP-
ING DIODES
VERY LOW QUIESCENT CURRENT
PLCC44 OR PQFP44 (10 x 10mm)
MULTIPOWER BCD TECHNOLOGY
DESCRIPTION
The L6450 is realized in Multipower BCD Tech-
nology which combines isolated DMOS power
transistors with CMOS and Bipolar circuits on the
same IC. By using mixed technology it has been
possible to optimize the logic circuitry and the
power stage to achieve the best possible perform-
ances.
Intended to be used in ink jet Printer Applications
as 4 to 28 (2 x 14) or 3 to 28 (4 x 7) lines select-
able decoder/driver, the L6450 device driver has
the advantages of low power CMOS inputs and
logic, with 28 high current and high voltage
DMOS outputs capable of sustaining a maximum
of 40V.
On system power up the output drivers are locked
out using the chip enable function; four enable in-
BLOCK DIAGRAM (case of 4 bit)
PQFP44
PLCC44
puts are available for the different driver banks.
An internal power-on system is implemented in
order to avoid wrong output commutation during
the supply voltage transients.
Using a mask option during manufacturing allows
a different decoding.
Control of the energy delivered to the print head
is made by means of a special circuitry.
All driver outputs are capable of withdstanding a
contact discharge of ±8KV with the IC biased.
March 1994
1/9
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
1 page  
Figure 1: Timing Waveforms
L6450
OUTPUT SELECTION
1)Decoder Truth Table when the BENCH =
HIGH;
IND/COM3 = is selected as input decoder ind;
COM1 = a low input enable the OUT0 to
OUT13;
COM2 = A Low Input Enable the OUT14 to
OUT27
IND
INC
INB
INA
(LSB)
OUTPUTS
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0.27
1.26
2.25
3.24
4.23
5.22
6.21
7.20
8.19
9.18
10.17
11.16
12.15
13.14
ALL OFF
ALL OFF
2)Decoder Truth Table when the BENCH =
LOW;
IND/COM3 = is selected as COM3
COM1: A Low Input Enable the OUT0 to
OUT6
COM2: A Low Input Enable the OUT7 to
OUT13
COM3: A Low Input Enable the OUT14 to
OUT20
COM4: A Low Input Enable the OUT21 to
OUT27
INC
INB
INA
(LSB)
000
001
010
011
100
101
110
111
OUTPUTS
0, 7,27, 20
1, 8, 26, 19
2, 9, 25, 18
3, 10, 24, 17
4, 11, 23, 16
5, 12, 22, 15
6, 13, 21, 14
ALL OFF
5/9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet L6450.PDF ] | |
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