6811
6811 is DABiC-IV/ 12-BIT SERIAL-INPUT/ LATCHED SOURCE DRIVER manufactured by Allegro MicroSystems.
features an increased data input rate (pared with the older UCN/UCQ5811A) and a controlled output slew rate. The CMOS shift register and latches allow direct interfacing with microprocessor-based systems. With a 3.3 V or 5 V logic supply, typical serial-data input rates are up to 33 MHz. A CMOS serial data output permits cascade connections in applications requiring additional drive lines. Similar devices are available as the A6809- and A6810- (10 bits), A6812- (20 bits), and A6818- (32 bits). The A6811- output source drivers are npn Darlingtons, capable of sourcing up to 40 m A. The controlled output slew rate reduces electromagnetic noise, which is an important consideration in systems that include telemunications and/or microprocessors and to meet government emissions regulations. For inter-digit blanking, all output drivers can be disabled and all sink drivers turned on with a BLANKING input high. The pnp active pull-downs will sink at least 2.5 m A. Two temperature ranges are available for optimum performance in mercial (suffix S-) or industrial (suffix E-) applications. Package styles are provided for through-hole DIP (suffix -A) and surface-mount SOIC or PLCC (suffix -LW or -EP). Copper lead frames, low logicpower dissipation, and low output-saturation voltages allow all devices to source 25 m A from all outputs continuously at up to 83°C.
Data Sheet 26182.120
20 19 BLNK 18 17 VBB 16 15 14 13 12 11
OUT 10 OUT 9 OUT 8 OUT 7 LOAD SUPPLY GROUND OUT 6 OUT 5 OUT 4 OUT 3
5 6 7 8 9 10 VDD CLK ST
Dwg. PP-029-5
ABSOLUTE MAXIMUM RATINGS at TA = 25°C
Logic Supply Voltage, VDD 7.0 V Driver Supply Voltage, VBB 60 V Continuous Output Current Range, IOUT -40 m A to +15 m A Input Voltage Range, VIN -0.3 V to VDD + 0.3 V Package Power Dissipation, PD See Graph Operating Temperature Range, TA (Suffix ‘E- ’) -40°C to +85°C...
