October 1998

7-11

Micrel

MIC5800/5801

7

MIC5800/5801

4/8-Bit Parallel-Input Latched Drivers

Ordering Information

Part Number

Temperature Range

Package

MIC5800BN

– 40

°C to + 85°C

14–Pin Plastic DIP

MIC5800BM

– 40

°C to + 85°C

14–Pin SOIC

MIC5801BN

– 40

°C to +85°C

22–Pin Plastic DIP

– 55

°C to +125°C

22–Pin CERDIP

MIC5801BV

– 40

°C to + 85°C

28–Pin PLCC

MIC5801BWM

– 40

°C to +85°C

24–Pin SOIC

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.

Functional Diagram

VDD

INn

STROBE

CLEAR

OUTPUT

ENABLE

COMMON MOS

CONTROL

TYPICAL MOS

LATCH

TYPICAL BIPOLAR

DRIVER

GND

OUTn

COMMON

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