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SN74AHCT245DWG4 Arkusz danych(PDF) 1 Page - Texas Instruments |
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SN74AHCT245DWG4 Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 20 page SN54AHCT245, SN74AHCT245 OCTAL BUS TRANSCEIVERS WITH 3STATE OUTPUTS SCLS233N − OCTOBER 1995 − REVISED MARCH 2005 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Inputs Are TTL-Voltage Compatible D Latch-Up Performance Exceeds 250 mA Per JESD 17 D ESD Protection Exceeds JESD 22 − 2000-V Human-Body Model (A114-A) − 200-V Machine Model (A115-A) − 1000-V Charged-Device Model (C101) SN54AHCT245 ...J OR W PACKAGE SN74AHCT245 . . . DB, DGV, DW, N, NS, OR PW PACKAGE (TOP VIEW) 32 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 SN54AHCT245 . . . 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 SN74AHCT245 . . . RGY PACKAGE (TOP VIEW) 120 10 11 2 3 4 5 6 7 8 9 19 18 17 16 15 14 13 12 OE B1 B2 B3 B4 B5 B6 B7 A1 A2 A3 A4 A5 A6 A7 A8 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. The ’AHCT245 devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so that the buses effectively are 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 SN74AHCT245N SN74AHCT245N QFN − RGY Tape and reel SN74AHCT245RGYR HB245 SOIC − DW Tube SN74AHCT245DW AHCT245 SOIC − DW Tape and reel SN74AHCT245DWR AHCT245 −40 °C to 85°C SOP − NS Tape and reel SN74AHCT245NSR AHCT245 −40 C to 85 C SSOP − DB Tape and reel SN74AHCT245DBR HB245 TSSOP − PW Tube SN74AHCT245PW HB245 TSSOP − PW Tape and reel SN74AHCT245PWR HB245 TVSOP − DGV Tape and reel SN74AHCT245DGVR HB245 CDIP − J Tube SNJ54AHCT245J SNJ54AHCT245J −55 °C to 125°C CFP − W Tube SNJ54AHCT245W SNJ54AHCT245W −55 C to 125 C LCCC − FK Tube SNJ54AHCT245FK SNJ54AHCT245FK † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Copyright 2005, 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 MILPRF38535, 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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