MIC59P60 8-Bit Serial-Input Protected Latched Driver0 pages

August 2001 1 MIC59P60
MIC59P60 Micrel
Ordering Information
Part Number Temperature Range Package
MIC59P60BN –40°C to +85°C 20-Pin Plastic DIP
MIC59P60BV –40°C to +85°C 20-Pin PLCC
MIC59P60BWM –40°C to +85°C 20-Pin Wide SOIC
3
4
5
11 19 18 17 16 15 13 12
7
6
8
9
2 10
1
14
CLOCK 20
SERIAL
DATA IN
VSS
CLEAR
UVLO
THERMAL
SHUTDOWN
ILIMIT
K OUT 1 OUT 2 OUT 3 OUT 4 OUT 5 OUT 6 OUT 7 OUT 8
SUB
VEE
MOS
BIPOLAR
OUTPUT
ENABLE/RESET
STROBE
VDD
SERIAL DATA OUT
FLAG
8-BIT SERIAL–PARALLEL SHIFT REGISTER
LATCHES
Features
• 3.3 MHz Minimum Data-Input Rate
• Output Current Shutdown (500mA Typical)
• Under Voltage 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
UVLO
I LIMIT
THERMAL
SHUTDOWN
10
9
8
7
6
5
4
3
2
1
SUB
SUB
SHIFT REGISTER
LATCHES
20
19
18
17
16
15
14
13
12
11
CLEAR
VEE
CLOCK
SERIAL DATA IN
VSS
VDD
SERIAL DATA OUT
STROBE
ENABLE/RESET
VEE
OUTPUT
FLAG
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
OUTPUT 5
OUTPUT 6
OUTPUT 7
OUTPUT 8
K
Pin Configuration
(DIP and SOIC)
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. Similar to the MIC5842,
additional protection circuitry supplied on this device includes
thermal shutdown, under voltage lockout (UVLO), and overcurrent
shutdown.
The bipolar/CMOS combination provides an extremely lowpower
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 are 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 these eight outputs has an independent over current
shutdown of 500 mA. Upon over-current shutdown, the
affected channel will turn OFF and the flag will go low until VDD
is cycled or the ENABLE/RESET pin is pulsed high. Current
pulses less than 2ìs 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 VDD; hysteresis of 0.5V is provided.
Functional Diagram
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com