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Related Links:

Datasheets:
5841: BiMOS II 8-Bit Serial-Input, Latched Drivers (PDF)

Selection Guides:
Relay/Solenoid Drivers

when this product is updated

A5841 and UCx5841
BiMOS II 8-Bit Serial-Input, Latched Drivers

The A5841 and UCx5841 has been phased out of production as of October 31, 2005.

For samples and information on the replacement part, please refer to the A6841.

Features

• To 3.3 MHz Data-Input Rate
• CMOS, NMOS, TTL Compatible Inputs
• Internal Pull-Up/Pull-Down Resistors
• Low-Power CMOS Logic and Latches
• High-Voltage Current-Sink Outputs
• Output Transient-Protection Diodes
• Single or Split Supply Operation
• DIP or SOIC Packaging
• Automotive Capable

Description

The merging of low-power CMOS logic and bipolar output power drivers permit the UCN5841A, UCN5841LW, and A5841SLW 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 drivers can be operated with a split supply where the negative supply is up to -20 V.

BiMOS II devices have higher data-input rates than the earlier BiMOS circuits. With a 5 V logic supply, they will typically operate at better than 5 MHz. With a 12 V supply, significantly higher speeds are obtained. The CMOS inputs are compatible with standard CMOS and NMOS 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.

Functional Block Diagram

Complete Part Numbers

Part Number	Package Type	RoHS Compliant	Part Composition/ RoHS Data	Temperature	Comments	Samples	Distributor Stock
A5841SLW	20-lead SOIC	No	view data	-20 °C to  85 °C	discontinued	Due to warehouse relocation, samples will be unavailable until July 21, 2008. Contact your sales rep or purchase from distributor.
A5841SLWTR	20-lead SOIC	No	view data	-20 °C to  85 °C	discontinued	Due to warehouse relocation, samples will be unavailable until July 21, 2008. Contact your sales rep or purchase from distributor.
UCN5841A	18-pin DIP	No	view data	-20 °C to  85 °C	discontinued	Due to warehouse relocation, samples will be unavailable until July 21, 2008. Contact your sales rep or purchase from distributor.
UCN5841LW	18-lead SOIC	No	view data	-20 °C to  85 °C	discontinued	Due to warehouse relocation, samples will be unavailable until July 21, 2008. Contact your sales rep or purchase from distributor.
UCN5841LWTR	18-lead SOIC	No	view data	-20 °C to  85 °C	discontinued	Due to warehouse relocation, samples will be unavailable until July 21, 2008. Contact your sales rep or purchase from distributor.
A5841ELW	20-lead SOIC	No	view data	-40 °C to  85 °C	discontinued	Due to warehouse relocation, samples will be unavailable until July 21, 2008. Contact your sales rep or purchase from distributor.
A5841ELWTR	20-lead SOIC	No	view data	-40 °C to  85 °C	discontinued	Due to warehouse relocation, samples will be unavailable until July 21, 2008. Contact your sales rep or purchase from distributor.
UCQ5841LW	18-lead SOIC	No	view data	-40 °C to  85 °C	discontinued	Due to warehouse relocation, samples will be unavailable until July 21, 2008. Contact your sales rep or purchase from distributor.
UCQ5841LWTR	18-lead SOIC	No	view data	-40 °C to  85 °C	discontinued	Due to warehouse relocation, samples will be unavailable until July 21, 2008. Contact your sales rep or purchase from distributor.

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.