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HCT574 Datasheet(PDF) 1 Page - Texas Instruments |
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HCT574 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 16 page SN54HCT574, SN74HCT574 OCTAL EDGETRIGGERED DTYPE FLIPFLOPS WITH 3STATE OUTPUTS SCLS177E − MARCH 1984 − REVISED AUGUST 2003 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Operating Voltage Range of 4.5 V to 5.5 V D High-Current 3-State Noninverting Outputs Drive Bus Lines Directly or Up To 15 LSTTL Loads D Low Power Consumption, 80-µA Max ICC D Typical tpd = 22 ns D ±6-mA Output Drive at 5 V D Low Input Current of 1 µA Max D Inputs Are TTL-Voltage Compatible D Bus-Structured Pinout description/ordering information These octal edge-triggered D-type flip-flops feature 3-state outputs designed specifically for bus driving. The ’HCT574 devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The eight flip-flops enter data on the low-to-high transition of the clock (CLK) input. 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 the 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 interface or pullup components. ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP − N Tube of 20 SN74HCT574N SN74HCT574N SOIC − DW Tube of 25 SN74HCT574DW HCT574 SOIC − DW Reel of 2000 SN74HCT574DWR HCT574 −40 °C to 85°C SOP − NS Reel of 2000 SN74HCT574NSR HCT574 −40 °C to 85°C SSOP − DB Reel of 2000 SN74HCT574DBR HT574 Tube of 70 SN74HCT574PW TSSOP − PW Reel of 2000 SN74HCT574PWR HT574 TSSOP − PW Reel of 250 SN74HCT574PWT HT574 CDIP − J Tube of 20 SNJ54HCT574J SNJ54HCT574J −55 °C to 125°C CFP − W Tube of 85 SNJ54HCT574W SNJ54HCT574W −55 C to 125 C LCCC − FK Tube of 55 SNJ54HCT574FK SNJ54HCT574FK † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Copyright 2003, Texas Instruments Incorporated UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information 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. 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. 32 1 20 19 910 11 1213 4 5 6 7 8 18 17 16 15 14 2Q 3Q 4Q 5Q 6Q 3D 4D 5D 6D 7D SN54HCT574 . . . FK PACKAGE (TOP VIEW) SN54HCT574 ...J OR W PACKAGE SN74HCT574 . . . DB, DW, N, NS, OR PW PACKAGE (TOP VIEW) 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 CLK |
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