MIC59P60

8-Bit Serial-Input Protected Latched Driver

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

August 4, 2015

Revision 2.0

General Description

The MIC59P60 serial-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, CLOCK, SERIAL DATA

INPUT, and OUTPUT ENABLE functions. Additional

protection circuitry supplied on this device includes thermal

shutdown, undervoltage lockout (UVLO), and overcurrent

shutdown.

The bipolar/CMOS combination provides an extremely

low-power latch with maximum interface flexibility. The

MIC59P60 has open-collector outputs capable of sinking

500mA, and integral diodes for inductive load transient

suppression 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 and may be paralleled for higher load

current capability.

Using a 5V logic supply, the MIC59P60 will typically

operate at better than 5MHz. With a 12V logic supply,

significantly higher speeds can be obtained. The CMOS

inputs are compatible with standard CMOS, PMOS, and

NMOS circuits. TTL circuits may require pull-up resistors.

By using the serial data output, drivers may be cascaded

for interface applications requiring additional drive lines.

Each of the eight outputs has an independent overcurrent

shutdown of 500mA. Upon over-current shutdown, the

affected channel will turn OFF, and the flag will go low until

Current pulses less t

han 2μs will not activate current

shutdown.

Temperatures above 165°C will shut down the device and

activate the error flag. The UVLO circuit prevents

Datasheets and support documentation are available on

Micrel’s web site at: www.micrel.com.

Features

• 3.3MHz minimum data input rate

• Output current shutdown (500mA typical)

• Undervoltage lockout

• Thermal shutdown

• Output fault flag

• CMOS, PMOS, NMOS, and 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