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)

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-

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.

This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

March 1994

BLOCK DIAGRAM (case of 4 bit)

PQFP44

PLCC44

MULTIPOWER BCD TECHNOLOGY

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