a6812ea Allegro MicroSystems, Inc., a6812ea Datasheet

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a6812ea

Manufacturer Part Number
a6812ea
Description
Dabic-iv 20-bit Serial-input Latched Source Driver
Manufacturer
Allegro MicroSystems, Inc.
Datasheet
Features and Benefits
▪ Controlled output slew rate
▪ High-speed data storage
▪ 60 V minimum output break down
▪ High data-input rate
▪ PNP active pull-downs
▪ Low output-saturation voltages
▪ Low-power CMOS logic and latches
▪ Improved replacements for TL5812x, UCN5812x, and
Package:
26182.126D
UCQ5812x
28-pin SOICW
(Package LW)
Not to scale
28-pin PLCC
(EP package)
Functional Block Diagram
DABiC-IV 20-Bit Serial-Input
Description
The A6812 device combines a 20-bit CMOS shift register,
ac com pa ny ing data latches and control cir cuit ry with bipolar
sourcing out puts ,and PNP active pull-downs. De signed
pri mar ily to drive vacuum-flu o res cent displays, the 60 V and
-40 mA output ratings also allow these devices to be used in
many other peripheral power driver applications. The A6812
features an increased data-input rate (com pared with the older
UCN/UCQ5812-F) and a controlled output slew rate.
The CMOS shift register and latches allow direct interfacing
with mi cro pro ces sor-based systems. With a 3.3 or 5 V logic
supply, they operate to at least 10 MHz.
A CMOS serial data output permits cascaded con nec tions in
ap pli ca tions re quir ing additional drive lines. Similar devices
are avail able as the A6810 (10-bit) and A6818 (32-bit).
The A6812 output source drivers are NPN Dar ling tons,
capable of sourcing up to 40 mA. The controlled output slew
rate reduces elec tro mag net ic noise, which is an important
consideration in systems that include telecommunications
and/or microprocessors and to meet government emis sions
Continued on the next page…
Latched Source Driver
A6812

Related parts for a6812ea

a6812ea Summary of contents

Page 1

Features and Benefits ▪ Controlled output slew rate ▪ High-speed data storage ▪ minimum output break down ▪ High data-input rate ▪ PNP active pull-downs ▪ Low output-saturation voltages ▪ Low-power CMOS logic and latches ▪ Improved replacements ...

Page 2

... Latched Source Driver Ambient Temperature, T Package (°C) PLCC – SOIC-W SOIC-W –40 to 125 PLCC – SOIC-W Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com A 2 ...

Page 3

... Units –0 0 – – ºC –40 to 125 ºC – ºC 150 ºC –65 to 125 ºC 125 150 Dwg. GP-024-2 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com Value Units 68 ºC/W 80 ºC/W 3 ...

Page 4

... OUT 14 19 OUT 10 OUT 13 18 OUT 11 OUT 12 OUT 12 17 OUT 11 13 BLNK 28 16 STROBE CLOCK CLK Dwg. PP-029-7 TYPICAL OUTPUT DRIVER V BB OUT N Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com ...

Page 5

... Irrelevant P = Present State R = Previous State Latched Source Driver Output Con tents ... I I Blanklng N ... R R N-1 N ... N ... Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com ... I N-1 ... P P N-1 N ... ...

Page 6

... Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com = 5 V Max. Units -15 μA — V 1.5 V — mA — V 1.7 V 1.0 μA μA -1.5 V — V 0.3 V — MHz 1 ...

Page 7

... ON. The in for ma tion stored in the latches is not affected by the BLANKING input. With the BLANK ING input low, the outputs are con trolled by the state of their re spec tive latches. Latched Source Driver DATA 10% Dwg. WP-029 t f 90% 50% Dwg. WP-030A Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 7 ...

Page 8

... Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown A Terminal #1 mark area Latched Source Driver 0.51 5.21±0.36 5.21±0.36 0.51 MIN +0.20 4.37 C –0.18 SEATING PLANE 1.27 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 8 ...

Page 9

... The in for ma tion in clud ed herein is believed rate and reliable. How ev er, Allegro MicroSystems, Inc. assumes no re spon si bil i ty for its use; nor for any in fringe ment of patents or other rights of third parties which may result from its use. ...

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