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SN54HC74 Datasheet(PDF) 1 Page - Texas Instruments |
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SN54HC74 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 16 page  SN54HC74, SN74HC74 DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET SCLS094D – DECEMBER 1982 – REVISED JULY 2003 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Wide Operating Voltage Range of 2 V to 6 V D Outputs Can Drive Up To 10 LSTTL Loads D Low Power Consumption, 40-µA Max ICC D Typical tpd = 15 ns D ±4-mA Output Drive at 5 V D Low Input Current of 1 µA Max description/ordering information The ’HC74 devices contain two independent D-type positive-edge-triggered 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 are transferred to the outputs on the positive-going edge of the clock (CLK) pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of CLK. 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 – N Tube of 25 SN74HC74N SN74HC74N Tube of 50 SN74HC74D SOIC – D Reel of 2500 SN74HC74DR HC74 Reel of 250 SN74HC74DT –40 °C to 85°C SOP – NS Reel of 2000 SN74HC74NSR HC74 SSOP – DB Reel of 2000 SN74HC74DBR HC74 Tube of 90 SN74HC74PW TSSOP – PW Reel of 2000 SN74HC74PWR HC74 Reel of 250 SN74HC74PWT CDIP – J Tube of 25 SNJ54HC74J SNJ54HC74J –55 °C to 125°C CFP – W Tube of 150 SNJ54HC74W SNJ54HC74W LCCC – FK Tube of 55 SNJ54HC74FK SNJ54HC74FK † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. 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 SN54HC74 ...J OR W PACKAGE SN74HC74 . . . D, DB, N, NS, OR PW PACKAGE (TOP VIEW) 32 1 20 19 910 11 1213 4 5 6 7 8 18 17 16 15 14 2D NC 2CLK NC 2PRE 1CLK NC 1PRE NC 1Q SN54HC74 . . . FK PACKAGE (TOP VIEW) NC – No internal connection Copyright 2003, Texas Instruments Incorporated 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. 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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