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MIC58P01BN

8-Bit Parallel-Input Protected Latched Driver

Micrel 

MIC58P01

Micrel

MIC58P01

8-Bit Parallel-Input Protected Latched Driver

Final Information

General Description

Features

The MIC58P01 parallel-input latched driver is a high-voltage

(80V), high-current (500mA) integrated circuit comprised of

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.

Similar to the MIC5801, additional protection circuitry supplied

on this device includes thermal shutdown, under voltage

lockout (UVLO), and overcurrent shutdown.

The bipolar/CMOS combination provides an extremely low-

power latch with maximum interface flexibility. The MIC58P01

has open-collector outputs capable of sinking 500 mA and

integral diodes for inductive load transient suppression with a

minimum output breakdown voltage rating of 80V (50V

sustaining). The drivers may be paralleled for higher load

current capability.

• 4.4MHz Minimum Data Input Rate

• High-Voltage, High-Current Outputs

• Per-Output Overcurrent Shutdown (500mA typical)

• Under Voltage Lockout

• Thermal Shutdown

• Output Transient Protection Diodes

• CMOS, PMOS, NMOS, and TTL Compatible Inputs

• Internal Pull-Down Resistors

• Low-Power CMOS Latches

With a 5V logic supply, the MIC58P01 will typically operate at

better than 5MHz. With a 12V logic supply, significantly higher

speeds are obtained. The CMOS inputs are compatible with

standard CMOS, PMOS, and NMOS circuits. TTL circuits

may require pull-up resistors.

Each of these eight outputs has an independent overcurrent

shutdown of 500mA. Upon current shutdown, the affected

channel will turn OFF until V is cycled or the ENABLE/

DD

RESET pin is pulsed high. Current pulses less than 2µs will

not activate current shutdown. Temperatures above 165°C

will shut down all outputs. The UVLO circuit disables the

outputs at low VDD; hysteresis of 0.5V is provided.

Ordering Information

Part Number Temperature Range

MIC58P01BN

–40°C to +85°C

MIC58P01BV

–40°C to +85°C

MIC58P01BWM –40°C to +85°C

Package

22-Pin Plastic DIP

28-Pin PLCC

24-Pin Wide SOIC

Functional Diagram

STROBE

VDD

CLEAR

ENABLE/RESET

2.2R

1.25V

R

+

–

UVLO

THERMAL

SHUTDOWN

ISHUTDOWN

IREF

IOUT / N

SQ

R

COMMON

OUTPUT

IN

R1

70k

Circuitry below dashed line is

included in each of the 8 channels.

R2

3k

VEE

Pin Configuration

(DIP)

CLEAR 1

STROBE 2

IN1 3

IN2 4

IN3 5

IN4 6

IN5 7

IN6 8

IN7 9

IN8 10

GROUND 11

22 OUTPUT

ILIMIT AND

ENABLE/RESET

THERMAL

SHUTDOWN

21

VDD

20 OUT1

19 OUT2

18 OUT3

17 OUT4

16 OUT5

15 OUT6

14 OUT7

13 OUT8

UVLO

12 COMMON

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

October 1998

1

MIC58P01

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