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A6259KLW Datasheet(PDF) 5 Page - Allegro MicroSystems |
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A6259KLW Datasheet(HTML) 5 Page - Allegro MicroSystems |
5 / 10 page 6259 8-BIT ADDRESSABLE DMOS POWER DRIVER www.allegromicro.com FUNCTIONAL DESCRIPTION and INPUT REQUIREMENTS Four modes of operation are selectable by controlling the CLEAR and ENABLE inputs as shown above. In the addressable-latch mode, data at the DATA input is written into the addressed transparent latch. The addressed output inverts the data input with all other outputs remaining in their previous states. In the memory mode, all outputs remain in their previous states and are unaffected by the DATA or address (Sn) inputs. To prevent entering erroneus data in the latches, ENABLE should be held HIGH while the address lines are changing. In the demultiplexing/decoding mode, the addressed output inverts the data input and all other outputs are OFF. In the clear mode, all outputs are OFF and are unaf- fected by the DATA or address (SN) inputs. Given the appropriate inputs, when DATA is LOW for a given address, the output is OFF; when DATA is HIGH, the output is ON and can sink current. 50% Dwg. WP-037 ENABLE DATA 50% w(D) t su(D) t h(D) t PHL t PLH t 50% ADDRESSED OUTPUT Dwg. WP-036 10% 90% f t r t ENABLE DATA OUTPUT SWITCHING TIME DATA INPUT REQUIREMENTS Data Active Time Before Enable (Data Set-Up Time), tsu(D) .............................................. 20 ns Data Active Time After Enable (Data Hold Time), th(D) ................................................... 20 ns Data Pulse Width, tw(D) ....................................................... 40 ns Input Logic High, VIH ................................................ ≥ 0.85VDD Input Logic Low, VIL ................................................. ≤ 0.15VDD |
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