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SN74LS245NSRE4 Datasheet(PDF) 1 Page - Texas Instruments |
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SN74LS245NSRE4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 20 page SN54LS245, SN74LS245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDLS146A – OCTOBER 1976 – REVISED FEBRUARY 2002 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D 3-State Outputs Drive Bus Lines Directly D PNP Inputs Reduce dc Loading on Bus Lines D Hysteresis at Bus Inputs Improves Noise Margins D Typical Propagation Delay Times Port to Port, 8 ns TYPE IOL (SINK CURRENT) IOH (SOURCE CURRENT) SN54LS245 12 mA –12 mA SN74LS245 24 mA –15 mA description These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. The 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 disable the device so that the buses are effectively isolated. ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP – N Tube SN74LS245N SN74LS245N SOIC – DW Tube SN74LS245DW LS245 0 °C to 70°C SOIC – DW Tape and reel SN74LS245DWR LS245 SOP – NS Tape and reel SN74LS245NSR 74LS245 SSOP – DB Tape and reel SN74LS245DBR LS245 CDIP – J Tube SN54LS245J SN54LS245J –55 °Cto125°C CDIP – J Tube SNJ54LS245J SNJ54LS245J –55 °C to 125°C CFP – W Tube SNJ54LS245W SNJ54LS245W LCCC – FK Tube SN54LS245FK SN54LS245FK † 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. 3 2 1 20 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 B1 B2 B3 B4 B5 A3 A4 A5 A6 A7 SN54LS245 . . . 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 SN54LS245 ...J OR W PACKAGE SN74LS245 ... DB, DW, N, OR NS 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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