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74ACT11648DWR Datasheet(PDF) 3 Page - Texas Instruments |
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74ACT11648DWR Datasheet(HTML) 3 Page - Texas Instruments |
3 / 10 page 74ACT11648 OCTAL BUS TRANSCEIVER AND REGISTER WITH 3STATE OUTPUTS SCAS115 − D3458, MARCH 1990 − REVISED APRIL 1993 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2−3 FUNCTION TABLE INPUTS DATA I/O OPERATION OR FUNCTION G DIR CAB CBA SAB SBA A1 THRU A8 B1 THRU 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 H or L H or L X X Input Input Isolation, hold storage L L X X X L Output Input Real-Time B Data to A Bus L L X H or 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 H or L X H X Input Output Stored A Data to B Bus † The data output functions may be enabled or disabled by various signals at the G and DIR inputs. Data input functions are always enabled, i.e., data at the bus pins will be stored on every low-to-high transition on the clock inputs. logic symbol‡ logic diagram (positive logic) 5 5 B8 B7 B6 B5 B4 B3 B2 B1 17 18 19 20 23 24 25 26 A8 A7 A6 A5 A4 A3 A2 A1 SAB CAB SBA CBA DIR G 13 12 11 10 5 4 3 2 27 28 15 16 14 1 1 6D 7 7 4D G7 C6 G5 C4 3 EN2 [AB] 3 EN1 [BA] G3 2 1 ≥1 ≥1 1 ‡ This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. To Seven Other Channels B1 26 A1 2 SAB CAB SBA CBA DIR G 27 28 15 16 14 1 Channels 1 of 8 1D C1 C1 1D |
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