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54ACT11533 Datasheet(PDF) 1 Page - Texas Instruments |
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54ACT11533 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 7 page 54ACT11533, 74ACT11533 OCTAL DTYPE TRANSPARENT LATCHES WITH 3STATE OUTPUTS SCAS017A − D2957, JULY 1987 − REVISED APRIL 1993 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Copyright 1993, Texas Instruments Incorporated 2−1 • Eight Latches in a Single Package • 3-State Bus-Driving Inverting Outputs • Full Parallel Access for Loading • Buffered Control Inputs • Inputs Are TTL-Voltage Compatible • Flow-Through Architecture Optimizes PCB Layout • Center-Pin V CC and GND Configurations 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 latches feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The eight latches of the ′ACT11533 are transparent D-type latches. While the enable (C) is high, the Q outputs will follow the complements of the (D) inputs. When the output control OC is taken low, the Q outputs will be latched. The ′ACT11533 is functionally equivalent to the ′ACT11373 except for having inverted outputs. A buffered output-control (OC) input can be 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 pullup components. The output control (OC) does not affect the internal operations of the latches. Old data can be retained or new data can be entered while the outputs are off. The 54ACT11533 is characterized for operation over the full military temperature range of −55 °C to 125°C. The 74ACT11533 is characterized for operation from − 40 °C to 85°C. 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. 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 C 54ACT11533 . . . JT PACKAGE 74ACT11533 . . . DW OR NT PACKAGE (TOP VIEW) 32 1 13 14 5 6 7 8 9 10 11 7D 8D C NC 8Q 7Q 6Q 2D 1D OC NC 1Q 2Q 3Q 4 15 16 17 18 54ACT11533 . . . FK PACKAGE (TOP VIEW) 28 27 26 25 24 23 22 21 20 19 12 NC − No internal connection OUTPUT Q INPUTS L L L H H H L X H L X X OC CD L H Q0 Z FUNCTION TABLE (each latch) EPIC is a trademark of Texas Instruments Incorporated. |
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