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74ACT16648 Datasheet(PDF) 2 Page - Texas Instruments |
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74ACT16648 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 10 page 54ACT16648, 74ACT16648 16BIT TRANSCEIVERS AND REGISTERS WITH 3STATE OUTPUTS SCAS188A − MAY 1991 − REVISED APRIL 1996 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 description (continued) The 54ACT16648 is characterized for operation over the full military temperature range of −55 °C to 125°C. The 74ACT16648 is characterized for operation from −40 °C to 85°C. FUNCTION TABLE (each 8-bit section) INPUTS DATA I/O OPERATION OR FUNCTION OE DIR CLKAB CLKBA SAB SBA A1−A8 B1−B8 OPERATION OR FUNCTION X X ↑ X X X Input Unspecified† Store A, B unspecified† X XX ↑ X X Unspecified† Input Store B, A unspecified† H X ↑↑ X X Input Input Store A and B data H X L L X X Input disabled Input disabled Isolation, hold storage L L X X X L Output Input Real-time B data to A bus L L X L X H Output Input Stored B data to A bus L H X X L X Input Output Real-time A data to B bus L H L X H X Input Output Stored A data to B bus † The data-output functions may be enabled or disabled by a variety of level combinations at OE and DIR. Data-input functions are always enabled; i.e., data at the bus terminals is stored on every low-to-high transition of the clock inputs. |
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