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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ACT245 데이터시트(PDF) 1 Page - Texas Instruments |
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ACT245 데이터시트(HTML) 1 Page - Texas Instruments |
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1 / 15 page  SN54ACT245, SN74ACT245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCAS452E – SEPTEMBER 1994 – REVISED OCTOBER 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 8 ns at 5 V D Inputs Are TTL-Voltage Compatible SN54ACT245 ...J OR W PACKAGE SN74ACT245 . . . 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 B1 B2 B3 B4 B5 A3 A4 A5 A6 A7 SN54ACT245 . . . FK PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 DIR A1 A2 A3 A4 A5 A6 A7 A8 GND VCC OE B1 B2 B3 B4 B5 B6 B7 B8 description/ordering information These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. When the output-enable (OE) is low, the device passes noninverted data from the A bus to the B bus or from the B bus to the A bus, depending upon the logic level at the direction-control (DIR) input. A high on OE disables the device so that the buses are effectively isolated. 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 SN74ACT245N SN74ACT245N SOIC DW Tube SN74ACT245DW ACT245 40 °Cto85°C SOIC – DW Tape and reel SN74ACT245DWR ACT245 –40 °C to 85°C SOP – NS Tape and reel SN74ACT245NSR ACT245 SSOP – DB Tape and reel SN74ACT245DBR AD245 TSSOP – PW Tape and reel SN74ACT245PWR AD245 CDIP – J Tube SNJ54ACT245J SNJ54ACT245J –55 °C to 125°C CFP – W Tube SNJ54ACT245W SNJ54ACT245W LCCC – FK Tube SNJ54ACT245K SNJ54ACT245FK † 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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