A6821 ALLEGRO [Allegro MicroSystems], A6821 Datasheet

A6821

Manufacturer Part Number

A6821

Description

DABiC-5 8-Bit Serial Input Latched Sink Drivers

Manufacturer

ALLEGRO [Allegro MicroSystems]

Datasheet

1.A6821.pdf (9 pages)

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Bonase Electronics (HK) Co., Limited

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A6821EA-T

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Part Number:

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A6821SA-T

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ALLEGRO

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A6821SA-T

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ALLEGRO

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Part Number:

A6821SLWTR-T

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A6821SLWTR-T

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Output Voltage, V

Logic Supply Voltage, V

Input Voltage Range, V

Continuous Output Current (each output), I

Package Power Dissipation, P

Operating Temperature Range

Caution: CMOS devices have input-static protection,

but are susceptible to damage when exposed to

extremely high static-electrical charges.

A6821SA/A6821EA..................................2.1 W

A6821SLW............................................... 1.5 W

Ambient Temperature, T

Storage Temperature, T

AB SO LUTE MAX I MUM RAT INGS

16-pin Wide Body SOIC

OUT

Package LW

Package A

16-pin DIP

.........................................50 V

..............–0.3 V to V

DABiC-5 8-Bit Serial Input Latched Sink Drivers

...................................7 V

............–20°C to +85°C

..........–55°C to +150°C

OUT

... 500 mA

+0.3 V

A6821

FEATURES

APPLICATIONS

Use the following complete part numbers when ordering:

A merged combination of bipolar and MOS technology gives these

devices an interface ﬂ exibility beyond the reach of standard logic

buffers and power driver arrays. Typical applications include driving

multiplexed LED displays or incandescent lamps.

The A6821 has an eight-bit CMOS shift register and CMOS control

circuitry, eight CMOS data latches, and eight bipolar current-sinking

Darlington output drivers.

The CMOS inputs are compatible with standard CMOS logic levels.

TTL circuits may require the use of appropriate pull-up resistors. By

using the serial data output, the drivers can be cascaded for interface

applications requiring additional drive lines.

The A6821SA is furnished in a standard 16-pin plastic DIP. The

A6821EA is a 16-pin plastic DIP, capable of operation from -40°C to

+85°C. The A6821SLW is a 16-lead wide-body SOIC, for surface-

mount applications. These devices are lead (Pb) free, with 100% matte

tin plated leadframes.

3.3 V to 5 V logic supply range

Power on reset (POR)

To 10 MHz data input rate

CMOS, TTL compatible

–40°C operation available

Multiplexed LED displays

Incandescent lamps

Part Number

A6821SLW-T

A6821SA-T

A6821EA-T

16-pin wide body SOIC

16-pin DIP

Package

Schmitt trigger inputs for improved

noise immunity

Low-power CMOS logic and latches

High-voltage current-sink outputs

Internal pull-up/pull down resistors

–20ºC to +85ºC

–40ºC to +85ºC

–20ºC to +85ºC

Ambient

Related parts for A6821

A6821 Summary of contents

Page 1

... The A6821SA is furnished in a standard 16-pin plastic DIP. The A6821EA is a 16-pin plastic DIP, capable of operation from -40°C to +85°C. The A6821SLW is a 16-lead wide-body SOIC, for surface- mount applications. These devices are lead (Pb) free, with 100% matte tin plated leadframes ...

Page 2

... Typical Output Driver www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6821 LOG IAL DAT A OUT OUT NAB LE ( LOW) MOS B IP OLAR P OWE OUND ...

Page 3

... ... ... ... www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6821 = Typ. Max. Min. Typ. Max. – 10 – – 10 – 1.1 – – 1.1 – 1.3 – – ...

Page 4

... The information stored in the latches or shift register is not affected by the OUTPUT ENABLE input. With the OUTPUT ENABLE input low, the outputs are controlled by the state of their respective latches. www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6821 DATA 10 ...

Page 5

... Pin A6821 5 ...

Page 6

... OUT P UT OUT NAB LE P OWE R OUT OUND S UB www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6821 Package LW 16 OUT 1 15 OUT 2 OUT OUT 4 12 OUT 5 11 OUT ...

Page 7

... BSC MIN 0.775 0.735 0.150 0.115 Dimensions in Millimeters (for reference only 2.54 0.13 BSC MIN 19.68 18.67 3.81 2.93 www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6821 0.014 0.008 0.430 MAX 0.300 BSC Dwg. MA-001-16A in 0.355 0.204 10.92 MAX 7.62 BSC Dwg. MA-001-16A mm 7 ...

Page 8

... BSC 0.4133 0.3977 MIN. Dimensions in Millimeters (controlling dimensions) 9 10.65 10.00 2 1.27 3 BSC 10.50 10.10 MIN. www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6821 0.0125 0.0091 0.050 0.016 0° 8° TO Dwg. MA-008-16A in 0.32 0.23 1.27 0.40 0° 8° TO Dwg. MA-008-16A mm 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. Copyright©2004, 2005 AllegroMicrosystems, Inc. A6821 9 ...

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