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SN74HC623 데이터시트(PDF) 1 Page - Texas Instruments |
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SN74HC623 데이터시트(HTML) 1 Page - Texas Instruments |
1 / 15 page SN54HC623, SN74HC623 OCTAL BUS TRANSCEIVERS WITH 3STATE OUTPUTS SCLS149C – DECEMBER 1982 – REVISED DECEMBER 2002 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Wide Operating Voltage Range of 2 V to 6 V D High-Current 3-State Outputs Can Drive Up To 15 LSTTL Loads D Low Power Consumption, 80-µA Max ICC D Typical tpd = 8 ns D ±6-mA Output Drive at 5 V D Low Input Current of 1 µA Max D Lock Bus-Latch Capability D True Logic description/ordering information These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation allows for maximum flexibility in timing. The ’HC623 devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon the logic levels at the output-enable (OEAB and OEBA) inputs. OEAB and OEBA disable the device so that the buses are effectively isolated. The dual-enable configuration gives the transceivers the capability to store data by simultaneously enabling OEAB and OEBA. Each output reinforces its input in this transceiver configuration. When both OEAB and OEBA are enabled and all other data sources to the two sets of bus lines are in the high-impedance state, both sets of bus lines (16 total) remain at their last states. The 8-bit codes appearing on the two sets of buses are identical. ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP – N Tube SN74HC623N SN74HC623N 40 °Cto85°C SOIC DW Tube SN74HC623DW HC623 –40 °C to 85°C SOIC – DW Tape and reel SN74HC623DWR HC623 SOP – NS Tape and reel SN74HC623NSR HC623 CDIP – J Tube SNJ54HC623J SNJ54HC623J –55 °C to 125°C CFP – W Tube SNJ54HC623W SNJ54HC623W LCCC – FK Tube SNJ54HC623FK SNJ54HC623FK † 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 UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information 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. SN54HC623 ...J OR W PACKAGE SN74HC623 ...DW, N, OR NS PACKAGE (TOP VIEW) SN54HC623 . . . FK PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 OEAB A1 A2 A3 A4 A5 A6 A7 A8 GND VCC OEBA B1 B2 B3 B4 B5 B6 B7 B8 32 1 20 19 910 11 1213 4 5 6 7 8 18 17 16 15 14 B1 B2 B3 B4 B5 A3 A4 A5 A6 A7 |
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