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SN74LVTH182646APM Datasheet(PDF) 3 Page - Texas Instruments |
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SN74LVTH182646APM Datasheet(HTML) 3 Page - Texas Instruments |
3 / 38 page SN54LVTH18646A, SN54LVTH182646A, SN74LVTH18646A, SN74LVTH182646A 3.3-V ABT SCAN TEST DEVICES WITH 18-BIT TRANSCEIVERS AND REGISTERS SCBS311D – MARCH 1994 – REVISED JUNE 1997 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 18 19 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 21 22 23 24 63 62 61 60 59 64 58 56 55 54 57 25 26 27 28 29 53 52 17 51 50 49 30 31 32 1A3 1A4 1A5 GND 1A6 1A7 1A8 1A9 VCC 2A1 2A2 2A3 GND 2A4 2A5 2A6 1B4 1B5 1B6 GND 1B7 1B8 1B9 VCC 2B1 2B2 2B3 2B4 GND 2B5 2B6 2B7 SN74LVTH18646A, SN74LVTH182646A . . . PM PACKAGE (TOP VIEW) FUNCTION TABLE (normal mode, each 9-bit section) INPUTS DATA I/O OPERATION OR FUNCTION OE DIR CLKAB CLKBA SAB SBA A1–A9 B1–B9 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 X X H Output Input disabled Stored B data to A bus L H X X L X Input Output Real-time A data to B bus L H X X H X Input disabled Output Stored A data to B bus † The data-output functions can be enabled or disabled by various signals 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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