MIC5841/5842 8-Bit Serial-Input Latched Drivers General Description The MIC5840 family is available in DIP, PLCC, and SOIC packages. Because of limitations on package power Using BiCMOS technology, the MIC5841/5842 integrated dissipation, the simultaneous operation of all drivers at circuits were fabricated to be used in a wide variety of maximum rated current might require a reduction in duty peripheral power driver applications. The devices each cycle. A copper-alloy lead frame provides for maximum have an eight-bit CMOS shift register, CMOS control package power dissipation. circuitry, eight CMOS data latches, and eight bipolar current-sink Darlington output drivers. Features These two devices differ only in maximum voltage ratings. The MIC5842 offers premium performance with a 3.3 MHz Minimum Data-Input Rate minimum output breakdown voltage rating of 80V (50V CMOS, PMOS, NMOS, TTL Compatible sustaining). The drivers can be operated with a split supply Internal Pull-Up/Pull-Down Resistors where the negative supply is down to 20V. Low-Power CMOS Logic and Latches The 500mA outputs, with integral transient-suppression High-Voltage Current-Sink Outputs diodes, are suitable for use with lamps, relays, solenoids and other inductive loads. Output Transient-Protection Diodes Single or Split Supply Operation 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. Ordering Information Part Number Temperature Range Package Standard Pb-Free MIC5841BN MIC5841YN 40C to +85C 18-Pin Plastic DIP MIC5841BV MIC5841YV 40C to +85C 20-Pin PLCC MIC5841BWM MIC5841YWM 40C to +85C 18-Pin Wide SOIC MIC5842BN MIC5842YN 40C to +85C 18-Pin Plastic DIP MIC5842BV MIC5842YV 40C to +85C 20-Pin PLCC MIC5842BWM MIC5842YWM 40C to +85C 18-Pin Wide SOIC Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC5841/42 Functional Diagram CLK 1 SERIAL 6 DATA OUT SERIAL 8-BIT SERIAL-PARALLEL SHIFT REGISTER DATA IN 3 V DD 5 V SS 4 LATCHES STROBE 7 OUTPUT ENABLE 8 (ACTIVE LOW) MOS Bipolar Sub 1 9 V EE 10 18 17 16 15 14 13 12 11 K OUT OUT OUT OUT OUT OUT OUT OUT 1 2 3 4 5 6 7 8 M9999-050506 May 2006 2 (408) 955-1690