Datenblatt-Suchmaschine für elektronische Bauteile |
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SN74ACT244NE4 Datenblatt(PDF) 1 Page - Texas Instruments |
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SN74ACT244NE4 Datenblatt(HTML) 1 Page - Texas Instruments |
1 / 22 page SN54ACT244, SN74ACT244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCAS517C − JUNE 1995 − REVISED OCTOBER 2002 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D 4.5-V to 5.5-V V CC Operation D Inputs Accept Voltages to 5.5 V D Max t pd of 9.5 ns at 5 V D Inputs Are TTL Compatible SN54ACT244 ...J OR W PACKAGE SN74ACT244 . . . 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 1Y1 2A4 1Y2 2A3 1Y3 1A2 2Y3 1A3 2Y2 1A4 SN54ACT244...FK PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 description/ordering information These octal buffers/drivers are designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The ’ACT244 devices are organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When OE is low, the device passes noninverted data from the A inputs to the Y outputs. When OE is high, 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 SN74ACT244N SN74ACT244N SOIC DW Tube SN74ACT244DW ACT244 40 °Cto85°C SOIC − DW Tape and reel SN74ACT244DWR ACT244 −40 °C to 85°C SOP − NS Tape and reel SN74ACT244NSR ACT244 SSOP − DB Tape and reel SN74ACT244DBR AD244 TSSOP − PW Tape and reel SN74ACT244PWR AD244 CDIP − J Tube SNJ54ACT244J SNJ54ACT244J −55 °C to 125°C CFP − W Tube SNJ54ACT244W SNJ54ACT244W LCCC − FK Tube SNJ54ACT24FK SNJ54ACT244FK † 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. 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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