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SN74F573NE4 датащи(PDF) 1 Page - Texas Instruments |
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SN74F573NE4 датащи(HTML) 1 Page - Texas Instruments |
1 / 5 page SN54F573, SN74F573 OCTAL TRANSPARENT DTYPE LATCHES WITH 3STATE OUTPUTS SDFS011A − MARCH 1987 − REVISED OCTOBER 1993 Copyright 1993, Texas Instruments Incorporated 2−1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 • Eight Latches in a Single Package • 3-State Bus-Driving True Outputs • Full Parallel Access for Loading • Buffered Control Inputs • Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs description These 8-bit 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 ′F573 are transparent D-type latches. While the latch enable (LE) input is high, the Q outputs follow the data (D) inputs. When the latch enable is taken low, the Q outputs are latched at the logic levels set up at the D inputs. A buffered output enable (OE) 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 state and increased drive provide the capability to drive bus lines without need for interface or pullup components. The output enable (OE) input does not affect the internal operations of the latches. Old data can be retained or new data can be entered while the outputs are in the high-impedance state. The SN54F573 is characterized for operation over the full military temperature range of − 55 °C to 125°C. The SN74F573 is characterized for operation from 0 °C to 70°C. FUNCTION TABLE (each latch) INPUTS OUTPUT OE LE D OUTPUT Q L H H H L HL L L LX Q0 H X X Z 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 OE 1D 2D 3D 4D 5D 6D 7D 8D GND VCC 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q LE SN54F573 ...J PACKAGE SN74F573 . . . DW OR N PACKAGE (TOP VIEW) 3 2 1 20 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 2Q 3Q 4Q 5Q 6Q 3D 4D 5D 6D 7D SN54F573 . . . FK PACKAGE (TOP VIEW) 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. |
Аналогичный номер детали - SN74F573NE4 |
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Аналогичное описание - SN74F573NE4 |
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