MIC5891 Micrel, Inc. MIC5891 8-Bit Serial-Input Latched Source Driver General Description Features The MIC5891 latched driver is a high-voltage, high current High-voltage, high-current outputs integrated circuit comprised of eight CMOS data latches, Output transient protection diodes CMOS control circuitry for the common STROBE and OUT- CMOS-, PMOS-, NMOS-, and TTL-compatible inputs PUT ENABLE, and bipolar Darlington transistor drivers for 5MHz typical data input rate each latch. Low-power CMOS latches Bipolar/MOS construction provides extremely low power latches with maximum interface exibility. Applications The MIC5891 will typically operate at 5MHz with a 5V logic supply. Alphanumeric and bar graph displays LED and incandescent displays The CMOS inputs are compatible with standard CMOS, Relay and solenoid drivers PMOS, and NMOS logic levels. TTL circuits may be used with appropriate pull-up resistors to ensure a proper logic- Other high-power loads high input. A CMOS serial data output allows additional drivers to be cascaded when more than 8 bits are required. The MIC5891 has open-emitter outputs with suppression diodes for protection against inductive load transients. The output transistors are capable of sourcing 500mA and will sustain at least 35V in the on-state. Simultaneous operation of all drivers at maximum rated current requires a reduction in duty cycle due to package power limitations. Outputs may be paralleled for higher load current capability. The MIC5891 is available in a 16-pin plastic DIP package (N) and 16-pin wide SOIC package (WM). Functional Diagram CLOCK SERIAL SERIAL 8-BIT SERIAL PARALLEL SHIFT REGISTER DATA OUT DATA IN LATCHES STROBE GROUND OUTPUT ENABLE MOS BIPOLAR OUT OUT OUT OUT OUT OUT OUT OUT 1 2 3 4 5 6 7 8 Micrel, Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 MIC5891 Micrel, Inc. Ordering Information Part Number Temperature Range Package Standard Pb-Free MIC5891BN MIC5891YN 40C to +85C 16-Pin Plastic DIP MIC5891BWM MIC5891YWM 40C to +85C 16-Pin Wide SOIC Pin Conguration SERIAL 16 GROUND 1 DATA OUT CLOCK 2 SHIFT 15 LOGIC SUPPLY V DD REGISTER SERIAL OUTPUT 3 14 OE DATA IN ENABLE LATCHES V STROBE 4 BB 13 LOAD SUPPLY OUT 5 12 OUT 1 8 OUT 6 11 OUT 2 7 OUT 7 10 OUT 3 6 OUT 8 9 OUT 4 5 V BB Typical Circuits V DD IN V OUT Typical Input Circuit Typical Output Circuit Allowable Package Power Dissipation vs. Temp. 2.5 2 PDIP = 60C/W 1.5 JA 1 0.5 CerDIP = 90C/W JA 0 25 50 75 100 125 150 AMBIENT TEMPERATURE (C) MIC5891 2 May 2006 PACKAGE POWER DISSIPATION (W)