October 1998

7-17

MIC58P01

Micrel

7

9

10

11

12

8

16

15

14

13

17

OUT5

OUT6

OUT7

OUT8

COMMON

GROUND

IN8

IN7

IN6

IN5

2

3

4

5

6

7

1

22

21

20

19

18

OUTPUT

ENABLE/RESET

VDD

OUT1

OUT2

OUT3

OUT4

IN4

IN3

IN2

IN1

STROBE

CLEAR

UVLO

THERMAL

SHUTDOWN

Pin Configuration

(DIP)

General Description

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.

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

RESET pin is pulsed high. Current pulses less than 2

µs will

not activate current shutdown. Temperatures above 165

°C

will shut down all outputs. The UVLO circuit disables the

outputs at low V

Functional Diagram

Ordering Information

Part Number

Temperature Range

Package

MIC58P01BN

–40

°C to +85°C

22-Pin Plastic DIP

MIC58P01BV

–40

°C to +85°C

28-Pin PLCC

MIC58P01BWM

–40

°C to +85°C

24-Pin Wide SOIC

IN

Circuitry below dashed line is

included in each of the 8 channels.

STROBE

VDD

2.2R

1.25V

R

+

–

UVLO

CLEAR

ENABLE/RESET

ISHUTDOWN

COMMON

S

R

Q

R1

70k

R2

3k

VEE

OUTPUT

THERMAL

SHUTDOWN

IREF

IOUT / N

Features

• 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

MIC58P01

8-Bit Parallel-Input Protected Latched Driver