Using BiCMOS technology, the MIC5841/5842 integrated circuits were fabricated to be used in a wide variety of peripheral power driver applications. The devices each have an eight-bit CMOS shift register, CMOS control circuitry, eight CMOS data latches, and eight bipolar current-sink Darlington output drivers.
These two devices differ only in maximum voltage ratings. The MIC5842 offers premium performance with a minimum output breakdown voltage rating 80V (50V sustaining). The drivers can be operated with a split supply where the negative supply is down to 20V.
The 500mA outputs, with integral transient-suppression diodes, are suitable for use with lamps, relays, solenoids and other inductive loads.
These devices have improved speed characteristics. With a 5V logic supply, they will typically operate faster than 5 MHz. With a 12V supply, significantly higher speeds are obtained. The CMOS inputs are compatible with standard CMOS, PMOS, and NMOS logic levels. TTL or DTL circuits may require the use of appropriate pull-up resistors. By using the serial data output, the drivers can be cascaded for interface applications requiring additional drive lines.
The MIC5840 family is available in DIP, PLCC, and SOIC packages. Because of limitations on package power dissipation, the simultaneous operation of all drivers at maximum rated current might require a reduction in duty cycle. A copper-alloy lead frame provides for maximum package power dissipation.
Features
3.3 MHz Minimum Data-Input Rate CMOS, PMOS, NMOS, 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 (408) 944-0800 fax http://www.micrel.com
Emitter Supply Voltage, VEE : 20V Input Voltage Range, VIN 0.3V to VDD + 0.3V Continuous Output Current, IOUT : 500mA Package Power Dissipation, : 1.82W Operating Temperature Range, to +85°C Storage Temperature Range, to +150°C
Collector-Emitter Saturation Voltage Collector-Emitter Saturation Voltage Input Voltage
Clamp Diode Leakage Current Clamp Diode Forward Voltage
VOUT = 50V VOUT = +70ºC VOUT = 80V VOUT = +70ºC IOUT = 100mA IOUT = 200mA IOUT = 350mA, VDD = 7.0V IOUT = 2mH IOUT = 2mH
VDD = 12V VDD = 10V VDD = 5.0V(4) VDD = 12V VDD = 10V VDD = 5.0V All Drivers ON, VDD = 12V All Drivers ON, VDD = 10V All Drivers ON, VDD = 5.0V All Drivers OFF, VDD = 12V All Drivers OFF, VDD = 10V All Drivers OFF, VDD = 350mA
Required
