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Related Links:

Datasheets:
A6841: DABiC-5 8-Bit Serial Input Latched Sink Drivers (PDF)

Selection Guides:
Power Integrated Circuits,

Relay/Solenoid Drivers

when this product is updated

Technical Publications:
Product Replacement for the 58xx Family of Serial-Input, Latched Sink Drivers

Press Releases:
A6800 Series: Allegro MicroSystems, Inc. Releases New Latched Sink Drivers

A6841
DABiC-5 8-Bit Serial Input Latched Sink Drivers

Features

• 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
• 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

Description

The merging of low-power CMOS logic and bipolar output power drivers using the proprietary DABiC-5 fabrication process 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 supply 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 applications requiring additional drive lines.

The A6841 is provided in an 18-pin plastic DIP (suffix A), and a 20-pin wide-body SOIC (suffix LW) with improved thermal characteristics compared to the 18-pin SOIC version it replaces (100% pin-compatible electrically).These devices are lead (Pb) free, with 100% matte tin plated leadframes.

Functional Block Diagram

Complete Part Numbers

Part Number	Package Type	RoHS Compliant	Part Composition/ RoHS Data	Temperature	Comments	Samples	Distributor Stock
A6841SA-T	18-pin DIP	Yes	view data	-20 °C to  85 °C
A6841SLW-20-T	20-lead SOIC	Yes	view data	-20 °C to  85 °C
A6841SLWTR-20-T	20-lead SOIC	--	--	-20 °C to  85 °C		samples not available
A6841EA-T	18-pin DIP	Yes	view data	-40 °C to  85 °C	new
A6841ELW-20-T	20-lead SOIC	--	--	-40 °C to  85 °C
A6841ELWTR-20-T	20-lead SOIC	--	--	-40 °C to  85 °C		samples not available

Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.