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6811 Datasheet(PDF) 1 Page - Allegro MicroSystems |
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6811 Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 8 page DABiC-IV, 12-BIT SERIAL-INPUT, LATCHED SOURCE DRIVER A6811xA 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 mA to +15 mA 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 (Suffix ‘S–’) .................. -20 °C to +85°C Storage Temperature Range, TS ............................... -55 °C to +125°C Caution: These CMOS devices have input static protection (Class 2) but are still susceptible to damage if exposed to extremely high static electrical charges. The A6811– devices combine a 12-bit CMOS shift register, accompanying data latches and control circuitry with bipolar sourcing outputs and pnp active pull downs. Designed primarily to drive vacuum-fluorescent displays, the 60 V and -40 mA output ratings also allow these devices to be used in many other peripheral power driver applications. The A6811– features an increased data input rate (com- 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 applica- tions 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 mA. The controlled output slew rate reduces electro- magnetic noise, which is an important consideration in systems that include telecommunications 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 BLANK- ING input high. The pnp active pull-downs will sink at least 2.5 mA. Two temperature ranges are available for optimum performance in commercial (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 logic- power dissipation, and low output-saturation voltages allow all devices to source 25 mA from all outputs continuously at up to 83 °C. FEATURES I Controlled Output Slew Rate I High-Speed Data Storage I 60 V Minimum Output Breakdown I High Data Input Rate I PNP Active Pull-Downs I Low Output-Saturation Voltages Complete part number includes a suffix to identify operating temperature range (E- or S-) and package type (-A, -EP, or -LW). Always order by complete part number, e.g., A6811SLW . 13 14 15 16 17 19 12 18 20 11 1 2 3 8 9 4 5 6 7 10 SERIAL DATA OUT SERIAL DATA IN BLANKING LOGIC SUPPLY STROBE CLOCK OUT1 OUT2 OUT11 OUT 12 LOAD SUPPLY BB V VDD ST GROUND CLK BLNK OUT 9 OUT 10 OUT 3 Dwg. PP-029-5 OUT 8 OUT7 OUT 6 OUT 5 OUT 4 6811 PRELIMINARY INFORMATION (subject to change without notice) May 15, 2000 I Low-Power CMOS Logic and Latches I Improved Replacements for SN75512B, UCN5811–, and UCQ5811– |
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