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SN74AHCT240DBR Datasheet(PDF) 1 Page - Texas Instruments |
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SN74AHCT240DBR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 28 page SN54AHCT240, SN74AHCT240 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCLS252K – OCTOBER 1995 – REVISED JULY 2003 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Inputs Are TTL-Voltage Compatible D Latch-Up Performance Exceeds 250 mA Per JESD 17 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 ’AHCT240 devices are organized as two 4-bit buffers/line drivers with separate output-enable (OE) inputs. When OE is low, the device passes 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 SN74AHCT240N SN74AHCT240N SOIC – DW Tube SN74AHCT240DW AHCT240 SOIC – DW Tape and reel SN74AHCT240DWR AHCT240 –40 °Cto85°C SOP – NS Tape and reel SN74AHCT240NSR AHCT240 –40 °C to 85°C SSOP – DB Tape and reel SN74AHCT240DBR HB240 TSSOP PW Tube SN74AHCT240PW HB240 TSSOP – PW Tape and reel SN74AHCT240PWR HB240 TVSOP – DGV Tape and reel SN74AHCT240DGVR HB240 CDIP – J Tube SNJ54AHCT240J SNJ54AHCT240J –55 °C to 125°C CFP – W Tube SNJ54AHCT240W SNJ54AHCT240W LCCC – FK Tube SNJ54AHCT240FK SNJ54AHCT240FK † 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 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 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 32 1 20 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 1Y1 2A4 1Y2 2A3 1Y3 1A2 2Y3 1A3 2Y2 1A4 SN54AHCT240 ...J OR W PACKAGE SN74AHCT240 . . . DB, DGV, DW, N, NS, OR PW PACKAGE (TOP VIEW) SN54AHCT240 . . . FK PACKAGE (TOP VIEW) 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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