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74ACT11821DW Datasheet(PDF) 1 Page - Texas Instruments |
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74ACT11821DW Datasheet(HTML) 1 Page - Texas Instruments |
1 / 7 page 54ACT11821, 74ACT11821 10BIT BUSINTERFACE FLIPFLOPS WITH 3STATE OUTPUTS SCAS156A − NOVEMBER 1990 − REVISED 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 • Provides Extra Data Width Necessary for Wider Address/Data Paths or Buses With Parity • Flow-Through Architecture Optimizes PCB Layout • Center-Pin V CC and GND Configurations Minimize 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 These 10-bit flip-flops feature 3-state outputs designed specifically for driving highly-capacitive or relatively low-impedance loads. They are particularly suitable for implementing wider buffer registers, I/O ports, bidirectional bus drivers with parity, and working registers. On the positive transition of the clock the Q outputs will follow the D inputs. A buffered output enable (OE) input can be used to place the ten outputs in either a normal logic state (high or low level) or a high-impedance state. In the high-impedance state the outputs neither load nor drive the bus lines significantly. The high-impedance 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 enable (OE)does not affect the internal operation 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 54ACT11821 is characterized for operation over the full military temperature range of −55 °C to 125°C. The 74ACT11821 is characterized for operation form − 40 °C to 85°C. 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. 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 1Q 2Q 3Q 4Q 5Q GND GND GND GND 6Q 7Q 8Q 9Q 10Q OE 1D 2D 3D 4D 5D VCC VCC 6D 7D 8D 9D 10D CLK 54ACT11821 . . . JT PACKAGE 74ACT11821 . . . DW PACKAGE 32 1 13 14 5 6 7 8 9 10 11 8D 9D 10 CLK 10Q 9Q 8Q 2D 1D OE 1Q 2Q 3Q 4Q 4 15 16 17 18 54ACT11821 . . . FK PACKAGE (TOP VIEW) 28 27 26 25 24 23 22 21 20 19 12 (TOP VIEW) |
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