A6841 ALLEGRO [Allegro MicroSystems], A6841 Datasheet

A6841

Manufacturer Part Number

A6841

Description

DABiC-5 8-Bit Serial Input Latched Sink Drivers

Manufacturer

ALLEGRO [Allegro MicroSystems]

Datasheet

1.A6841.pdf (10 pages)

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A6841SLW

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A6841SLWT-18

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Output Voltage

Logic Supply Voltage, V

Emitter 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.

Ambient Temperature, T

Storage Temperature, T

AB SO LUTE MAX I MUM RAT INGS

CE(SUS)

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

18-pin Wide Body SOIC

20-pin Wide Body SOIC

(for inductiove load applications) .......35 V

Package LW-20

Package LW

Package A

18-pin DIP

..............–0.3 V to V

DABiC-5 8-Bit Serial Input Latched Sink Drivers

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

.............................–20 V

............–20°C to +85°C

..........–55°C to +150°C

, see chart, page 6

OUT

... 500 mA

+0.3 V

A6841

The merging of low-power CMOS logic and bipolar output power

drivers permit the A6841 integrated circuits to be used in a wide variety

of peripheral power driver applications. Each device has an eight-bit

CMOS shift register and CMOS control circuitry, eight CMOS data

latches, and eight bipolar current-sinking Darlington output drivers. The

500 mA NPN Darlington outputs, with integral transient-suppression

diodes, are suitable for use with relays, solenoids, and other inductive

loads.

All package variations of the A6841 offer premium performance with

a minimum output-breakdown voltage rating of 50 V (35 V sustaining).

All drivers can be operated with a split supply where the negative sup-

ply is up to –20 V.

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, drivers can be cascaded for interface appli-

cations requiring additional drive lines.

The A6841SA devices are furnished in a standard 18-pin plastic DIP. The

A6841SLW device is available in an 18-lead SOIC package. A 20-pin

SOIC version, A6841SLW-20 has improved thermal characteristics. The

SOIC drivers are also available for operation to a temperature of –40°C

(part number sufﬁ x ELW). These devices are lead (Pb) free, with 100%

matte tin plated leadframes.

FEATURES

APPLICATIONS

Use the following complete part numbers when ordering:

A6841SLW-20-T

A6841ELW-20-T

Part Number

A6841SLW-T

A6841ELW-T

A6841SA-T

3.3 V to 5 V logic supply range

Power on reset (POR)

To 10 MHz data input rate

CMOS, TTL compatible inputs

–40°C operation available

Low-power CMOS logic and latches

Relays

Solenoids

Inductive loads

18-pin wide body SOIC

20-pin wide body SOIC

18-pin wide body SOIC

20-pin wide body SOIC

(enhanced thermals)

18-pin DIP

Package

Schmitt trigger inputs for

improved noise immunity

High-voltage current-sink outputs

Internal pull-up/pull down resistors

Output transient-protection diodes

Single or split supply operation

–20ºC to +85ºC

–40ºC to +85ºC

Ambient

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A6841 Summary of contents

Page 1

... A6841 The merging of low-power CMOS logic and bipolar output power drivers permit the A6841 integrated circuits to be used in a wide variety of peripheral power driver applications. Each device has an eight-bit CMOS shift register and CMOS control circuitry, eight CMOS data latches, and eight bipolar current-sinking Darlington output drivers ...

Page 2

... Typical Output Driver www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6841 LOG IAL DAT A OUT OUT NAB LE ( LOW) MOS B IP OLAR OWE OUND ...

Page 3

... ... ... www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6841 = 0 V, logic supply operating 3 Typ. Max. Min. Typ. Max. – 10 – – 10 – – 35 – – ...

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 A6841 DATA 10 ...

Page 5

... Worcester, Massachusetts 01615-0036 (508) 853-5000 Pin 18-pin – 60°C /W θ 70°C /W θ 80°C /W θ 100 125 150 A6841 20-pin 10 ...

Page 6

... NC C ONNE + www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6841 OUT 20 1 OUT OUT 3 17 OUT 4 16 OUT 5 15 OUT 6 14 OUT 7 13 OUT ...

Page 7

... BSC MIN 0.920 0.880 0.150 0.115 Dimensions in Millimeters (for reference only 2.54 0.13 BSC MIN 23.37 22.35 3.81 2.93 www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6841 0.014 0.008 0.430 MAX 0.300 BSC Dwg. MA-001-18A in 0.355 0.204 10.92 MAX 7.62 BSC Dwg. MA-001-18A mm 7 ...

Page 8

... BSC 0.4625 0.4469 MIN. Dimensions in Millimeters (controlling dimensions) 10 10.65 10.00 3 1.27 BSC 11.75 11.35 www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6841 0.0125 0.0091 0.050 0.016 0° 8° TO Dwg. MA-008-18A in 0.32 0.23 1.27 0.40 0° 8° TO Dwg. MA-008-18A mm 8 ...

Page 9

... BSC 0.5118 0.4961 MIN. Dimensions in Millimeters (controlling dimensions 1.27 3 BSC 13.00 12.60 MIN. www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 A6841 0.0125 0.0091 0.419 0.394 0.050 0.016 0° 8° TO Dwg. MA-008-20 in 0.32 0.23 10.65 10.00 1.27 0.40 0° 8° TO Dwg. MA-008- ...

Page 10

... 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. A6841 10 ...

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