MIC59P60_15 Datasheet, PDF (1/15 Pages) Micrel Semiconductor – 8-Bit Serial-Input Protected Latched Driver

MIC59P60
8-Bit Serial-Input Protected Latched Driver
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
V_DD is cycled or the ENABLE/RESET pin is pulsed high.
Current pulses less than 2μs will not activate current
shutdown.
Temperatures above 165°C will shut down the device and
activate the error flag. The UVLO circuit prevents
operation at low V_DD; hysteresis of 0.5V is provided.
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
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
August 4, 2015
Revision 2.0