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54ACT11534 데이터시트(PDF) 1 Page - Texas Instruments |
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54ACT11534 데이터시트(HTML) 1 Page - Texas Instruments |
1 / 7 page 54ACT11534, 74ACT11534 OCTAL DTYPE EDGETRIGGERED FLIPFLOPS WITH 3STATE OUTPUTS SCAS038A − D2957, JULY 1987 − REVISED APRIL 1993 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001 Copyright 1993, Texas Instruments Incorporated 2−1 • Eight D-Type Flip-Flops in a Single Package • 3-State Bus Driving Inverting Outputs • Full Parallel Access for Loading • Inputs Are TTL-Voltage Compatible • Flow-Through Architecture to Optimize PCB Layout • Center-Pin V CC and GND Configurations to Minimize High-Speed Switching Noise • EPICt (Enhanced-Performance Implanted CMOS) 1- mm Process • 500-mA Typical Latch-Up Immunity at 125 °C • Package Options Include Plastic Small- Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs description These eight flip-flops feature 3-state outputs designed for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The eight flip-flops of the ′ACT11534 are edge-triggered D-type flip-flops. On the positive transition of the clock, the Q outputs are set to the complement of the logic levels at the D inputs. The ′ACT11534 is functionally equivalent to the ′ACT11373 except for having inverted outputs. An output-control input (OC) is used to place the eight outputs in either a normal logic state (high or low logic levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance third state and increased drive provide the capability to drive the bus lines in a bus-organized system without need for interface or pull-up components. The output control (OC) does not affect the internal operations of the flip-flops. Old data can be retained, or new data can be entered while the outputs are in the high-impedance state. The 54ACT11534 is characterized for operation over the full military temperature range of − 55 °C to 125 °C. The 74ACT11534 is characterized for operation from − 40 °C to 85°C. 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 1Q 2Q 3Q 4Q GND GND GND GND 5Q 6Q 7Q 8Q OC 1D 2D 3D 4D VCC VCC 5D 6D 7D 8D CLK 54ACT11534 . . . JT PACKAGE 74ACT11534 . . . DW OR NT PACKAGE (TOP VIEW) 32 1 13 14 5 6 7 8 9 10 11 7D 8D CLK NC 8Q 7Q 6Q 2D 1D OC NC 1Q 2Q 3Q 4 15 16 17 18 54ACT11534 . . . FK PACKAGE (TOP VIEW) 28 27 26 25 24 23 22 21 20 19 12 INPUTS OUTPUT Q L L L H FUNCTION TABLE (each flip-flop) OC CLK D ↑ ↑ L X H L X X L H Q0 Z NC − No internal connection PRODUCTION DATA information is 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. EPIC is a trademark of Texas Instruments Incorporated. |
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