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MIC58P01
Micrel
MIC58P01
8-Bit Parallel-Input Protected Latched Driver
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 lowpower 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 VDD 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 all outputs. The UVLO circuit disables the outputs at low VDD; hysteresis of 0.5V is provided.
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
Ordering Information
Part Number MIC58P01BN MIC58P01BV MIC58P01BWM Temperature Range –40°C to +85°C –40°C to +85°C –40°C to +85°C Package 22-Pin Plastic DIP 28-Pin PLCC 24-Pin Wide SOIC
7
Functional Diagram
ENABLE/RESET STROBE V DD CLEAR ISHUTDOWN IREF IOUT / N -
Pin Configuration
(DIP)
CLEAR STROBE IN1 IN2
OUTPUT
1 2 3 4
LATCHES
22 I LIMIT AND THERMAL SHUTDOWN 21 20 19 18 17 16 15 14 13 UVLO 12
OUTPUT ENABLE/RESET VDD OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 COMMON
+
2.2R + – UVLO THERMAL SHUTDOWN S R Q COMMON
1.25V R
IN3 IN4
5 6 7 8 9
IN
R1 70k
IN5 IN6
Circuitry below dashed line is included in each of the 8 channels.
V EE
R2 3k
IN7
IN8 10 GROUND 11
October 1998
7-17
MIC58P01
Micrel
Pin Configuration, Continued
OE/RESET STROBE CLEAR
Absolute Maximum Ratings: (Note 1)
at +25°C Free-Air Temperature Output Voltage, VCE Supply Voltage, VDD Input Voltage Range, VIN Package Power Dissipation: MIC58P01BN Derate above TA = +25°C MIC58P01BV Derate above TA = +25°C MIC58P01BWM Derate above TA = +25°C Operating Temperature Range, TA Storage Temperature Range, TS 80V 15V –0.3V to V.