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54ACT11470 Datasheet(PDF) 1 Page - Texas Instruments |
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54ACT11470 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 7 page 54ACT11470, 74ACT11470 8BIT REGISTERED BUS TRANSCEIVERS WITH 3STATE OUTPUTS SCAS207 − D4016, APRIL 1993 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001 Copyright 1993, Texas Instruments Incorporated 2−1 • Inputs Are TTL-Voltage Compatible • Flow-Through Architecture Optimizes PCB Layout • Center-Pin V CC and GND Configuration Minimizes High-Speed Switching Noise • EPIC (Enhanced-Performance Implanted CMOS) 1- µm Process • 500-mA Typical Latch-Up Immunity at 125 °C • Package Options Include Plastic Small- Outline Packages, Ceramic Chip Carriers, and Standard Ceramic 300-mil DIPs description The ′ACT11470 is an 8-bit registered bus transceiver that contains two sets of D-type flip-flops for temporary storage of data flowing in either direction. Separate clock (CLKAB or CLKBA) and output-enable (OEAB or OEBA) inputs are provided for each register to permit independent control in either direction of data flow. The A-to-B enable (CEAB) input must be low in order to enter data from A or to output data to B. If both CEAB and CLKAB are low, then the B port presents the level of the A port prior to the most recent low-to-high transition of CLKAB. Data flow from B to A is similar, but requires the use of CEBA, CLKBA, and OEBA inputs. To avoid false clocking of the flip-flops, CEAB and CEBA should not be switched from low to high while CLK is low. The 54ACT11470 is characterized for operation over the full military temperature range of − 55 °C to 125 °C. The 74ACT11470 is characterized for operation from − 40 °C to 85°C. FUNCTION TABLE† INPUTS OUTPUT CEAB CLKAB OEAB A OUTPUT B H X X X Z X XH XZ L LL X B0‡ L ↑ LL L L ↑ L H H † A-to-B data flow is shown: B-to-A flow is similar but uses CEBA, CLKBA, and OEBA. ‡ Output level before the indicated steady-state input conditions were established. EPIC is a trademark of Texas Instruments Incorporated. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 CEBA A1 A2 A3 A4 GND GND GND GND A5 A6 A7 A8 CEAB OEBA CLKBA B1 B2 B3 B4 VCC VCC B5 B6 B7 B8 CLKAB OEAB 54ACT11470 . . . JT PACKAGE 74ACT11470 . . . DW PACKAGE (TOP VIEW) 32 1 13 14 5 6 7 8 9 10 11 B7 B8 CLKAB OEAB CEAB A8 A7 B1 CLKBA OEBA CEBA A1 A2 A3 4 15 16 17 18 54AC11470 . . . FK PACKAGE (TOP VIEW) 28 27 26 25 24 23 22 21 20 19 12 UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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