MIC58P01 8-Bit Parallel-Input Protected Latched Driver - Micrel - #1

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October 1998 1 MIC58P01 MIC58P01 Micrel 9 10 11 12 8 16 15 14 13 17 OUT5 OUT6 OUT7 OUT8 GROUND COMMON IN8 IN7 IN6 IN5 2 3 4 5 6 7 1 22 21 20 19 18 OUTPUT ENABLE/RESET VDD OUT1 OUT2 OUT3 IN4 OUT4 IN3 IN2 IN1 STROBE CLEAR LATCHES UVLO ILIMIT AND 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 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 2ìs 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. 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 Final Information Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com