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SN74273 Datasheet(PDF) 1 Page - Texas Instruments |
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SN74273 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 8 page 8D 7D 6D 5D 4D 3D 2D 1D CLK CLR 18 17 14 13 8 7 4 3 11 1 1D C1 EN 8Q 7Q 6Q 5Q 4Q 3Q 2Q 1Q 19 16 15 12 6 5 2 9 logic symbol† † This symbol is in accordance with ANSI/IEEE Std. 91-1984 and IEC Publication 617-12. Pin numbers shown are for the DW, J, N, and W packages. SN54273, SN54LS273, SN74273, SN74LS273 OCTAL D-TYPE FLIP-FLOP WITH CLEAR SDLS090 – OCTOBER 1976 – REVISED MARCH 1988 Copyright © 1988, Texas Instruments Incorporated 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 • Contains Eight Flip-Flops With Single-Rail Outputs • Buffered Clock and Direct Clear Inputs • Individual Data Input to Each Flip-Flop • Applications Include: Buffer/Storage Registers Shift Registers Pattern Generators description These monolithic, positive-edge-triggered flip- flops utilize TTL circuitry to implement D-type flip-flop logic with a direct clear input. Information at the D inputs meeting the setup time requirements is transferred to the Q outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a particular voltage level and is not directly related to the transition time of the positive-going pulse. When the clock input is at either the high or low level, the D input signal has no effect ar the output. These flip-flops are guaranteed to respond to clock frequencies ranging form 0 to 30 megahertz while maximum clock frequency is typically 40 megahertz. Typical power dissipation is 39 milliwatts per flip-flop for the ′273 and 10 milliwatts for the ′LS273. FUNCTION TABLE (each flip-flop) INPUTS OUTPUT CLEAR CLOCK D Q L X X L H ↑ HH H ↑ LL H L X Q0 SN54LS273 . . . FK PACKAGE (TOP VIEW) SN54273, SN74LS273 ...J OR W PACKAGE SN74273 ...N PACKAGE SN74LS273 . . . DW OR N PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 CLR 1Q 1D 2D 2Q 3Q 3D 4D 4Q GND VCC 8Q 8D 7D 7Q 6Q 6D 5D 5Q CLK 32 1 20 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 8D 7D 7Q 6Q 6D 2D 2Q 3Q 3D 4D 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. |
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