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MIC5841

8-Bit Serial-Input Latched Drivers

Micrel 

MIC5841/5842

8-Bit Serial-Input Latched Drivers

General Description

Using BiCMOS technology, the MIC5841/5842 integrated

circuits were fabricated to be used in a wide variety of

peripheral power driver applications. The devices each

have an eight-bit CMOS shift register, CMOS control

circuitry, eight CMOS data latches, and eight bipolar

current-sink Darlington output drivers.

These two devices differ only in maximum voltage ratings.

The MIC5842 offers premium performance with a

minimum output breakdown voltage rating of 80V (50V

sustaining). The drivers can be operated with a split supply

where the negative supply is down to –20V.

The 500mA outputs, with integral transient-suppression

diodes, are suitable for use with lamps, relays, solenoids

and other inductive loads.

These devices have improved speed characteristics. With

a 5V logic supply, they will typically operate faster than

5 MHz. With a 12V supply, significantly higher speeds are

obtained. The CMOS inputs are compatible with standard

CMOS, PMOS, and NMOS logic levels. TTL or DTL

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 MIC5840 family is available in DIP, PLCC, and SOIC

packages. Because of limitations on package power

dissipation, the simultaneous operation of all drivers at

maximum rated current might require a reduction in duty

cycle. A copper-alloy lead frame provides for maximum

package power dissipation.

Features

• 3.3 MHz Minimum Data-Input Rate

• CMOS, PMOS, NMOS, TTL Compatible

• 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

Ordering Information

Part Number

Standard

Pb-Free

MIC5841BN

MIC5841YN

MIC5841BV

MIC5841YV

MIC5841BWM MIC5841YWM

MIC5842BN

MIC5842YN

MIC5842BV

MIC5842YV

MIC5842BWM MIC5842YWM

Temperature Range

Package

–40ºC to +85ºC

–40ºC to +85ºC

–40ºC to +85ºC

–40ºC to +85ºC

–40ºC to +85ºC

–40ºC to +85ºC

18-Pin Plastic DIP

20-Pin PLCC

18-Pin Wide SOIC

18-Pin Plastic DIP

20-Pin PLCC

18-Pin Wide SOIC

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

May 2006

M9999-050506

(408) 955-1690

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