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SN74ACT374PWLE датащи(PDF) 1 Page - Texas Instruments |
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SN74ACT374PWLE датащи(HTML) 1 Page - Texas Instruments |
1 / 18 page SN54ACT374, SN74ACT374 OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS SCAS539F – OCTOBER 1995 – REVISED NOVEMBER 2002 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D 4.5-V to 5.5-V VCC Operation D Inputs Accept Voltages to 5.5 V D Max tpd of 10 ns at 5 V D Inputs Are TTL-Voltage Compatible description/ordering information These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. The devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The eight flip-flops of the ’ACT374 devices are D-type edge-triggered flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels set up at the data (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 the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines in bus-organized systems without need for interface or pullup components. OE does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while the outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP – N Tube SN74ACT374N SN74ACT374N SOIC DW Tube SN74ACT374DW ACT374 40 °Cto85°C SOIC – DW Tape and reel SN74ACT374DWR ACT374 –40 °C to 85°C SOP – NS Tape and reel SN74ACT374NSR ACT374 SSOP – DB Tape and reel SN74ACT374DBR AD374 TSSOP – PW Tape and reel SN74ACT374PWR AD374 CDIP – J Tube SNJ54ACT374J SNJ54ACT374J –55 °C to 125°C CFP – W Tube SNJ54ACT374W SNJ54ACT374W LCCC – FK Tube SNJ54ACT374FK SNJ54ACT374FK † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Copyright 2002, Texas Instruments Incorporated 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. 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. 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 OE 1Q 1D 2D 2Q 3Q 3D 4D 4Q GND VCC 8Q 8D 7D 7Q 6Q 6D 5D 5Q CLK SN54ACT374 ...J OR W PACKAGE SN74ACT374 . . . DB, DW, N, NS, OR PW PACKAGE (TOP VIEW) 3 2 1 20 19 9 10 11 12 13 4 5 6 7 8 18 17 16 15 14 2D 2Q 3Q 3D 4D SN54ACT374 . . . FK PACKAGE (TOP VIEW) 8D 7D 7Q 6Q 6D 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. |
Аналогичный номер детали - SN74ACT374PWLE |
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Аналогичное описание - SN74ACT374PWLE |
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