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CD54AC74F3A Fiches technique(PDF) 1 Page - Texas Instruments |
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CD54AC74F3A Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 6 page CD54AC74, CD74AC74 DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET SCHS231D – SEPTEMBER 1998 – REVISED DECEMBER 2002 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D AC Types Feature 1.5-V to 5.5-V Operation and Balanced Noise Immunity at 30% of the Supply D Speed of Bipolar F, AS, and S, With Significantly Reduced Power Consumption D Balanced Propagation Delays D ±24-mA Output Drive Current – Fanout to 15 F Devices D SCR-Latchup-Resistant CMOS Process and Circuit Design D Exceeds 2-kV ESD Protection Per MIL-STD-883, Method 3015 description/ordering information The ’AC74 dual positive-edge-triggered devices are D-type flip-flops. A low level at the preset (PRE) or clear (CLR) inputs sets or resets the outputs, regardless of the levels of the other inputs. When PRE and CLR are inactive (high), data at the data (D) input meeting the setup time requirements is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not related directly to the rise time of the clock pulse. Following the hold-time interval, data at the D input can be changed without affecting the levels at the outputs. ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP – E Tube CD74AC74E CD74AC74E 55 °Cto125°C SOIC M Tube CD74AC74M AC74M –55 °C to 125°C SOIC – M Tape and reel CD74AC74M96 AC74M CDIP – F Tube CD54AC74F3A CD54AC74F3A † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each flip-flop) INPUTS OUTPUTS PRE CLR CLK D Q Q L H X X H L H LX XL H L LX X H‡ H‡ H H ↑ HH L H H ↑ LL H H H L X Q0 Q0 ‡ This configuration is nonstable; that is, it does not persist when PRE or CLR returns to its inactive (high) level. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 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. Copyright 2002, Texas Instruments Incorporated 1 2 3 4 5 6 7 14 13 12 11 10 9 8 1CLR 1D 1CLK 1PRE 1Q 1Q GND VCC 2CLR 2D 2CLK 2PRE 2Q 2Q CD54AC74 ...F PACKAGE CD74AC74 ...E OR M PACKAGE (TOP VIEW) On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. |
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