MIC5800/5801

4/8-Bit Parallel-Input Latched Drivers

General Description

The MIC5800/5801 latched drivers are high-voltage, high-

current integrated circuits comprised of four or eight

CMOS data latches, a bipolar Darlington transistor driver

for each latch, and CMOS control circuitry for the common

CLEAR, STROBE, and OUTPUT ENABLE functions.

The bipolar/MOS combination provides an extremely low-

power latch with maximum interface flexibility. MIC5800

contains four latched drivers; MIC5801 contains eight

latched drivers.

Data input rates are greatly improved in these devices.

With a 5V supply, they will typically operate at better than

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

obtained. The CMOS inputs are compatible with standard

CMOS, PMOS, and NMOS circuits. TTL or DTL circuits

may require the use of appropriate pull-up resistors. The

bipolar outputs are suitable for use with relays, solenoids,

stepping motors, LED or incandescent displays, and other

high-power loads. Both units have open-collector outputs

and

integral

diodes

for

inductive

load

transient

suppression. The output transistors are capable of sinking

500mA and will sustain at least 50V in the OFF state.

Because of limitations on package power dissipation, the

simultaneous operation of all drivers at maximum rated

current can only be accomplished by a reduction in duty

cycle. Outputs may be paralleled for higher load current

capability.

Datasheets and support documentation are available on

Micrel’s web site at: www.micrel.com.

Features

• 4.4MHz Minimum Data Input Rate

• High-Voltage, Current Sink Outputs

• Output Transient Protection

• CMOS, PMOS, NMOS, and TTL Compatible Inputs

• Internal Pull-Down Resistors

• Low-Power CMOS Latches

Functional Diagram

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

June 29, 2015

Revision 2.0