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SN74HC623DW датащи(PDF) 1 Page - Texas Instruments |
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SN74HC623DW датащи(HTML) 1 Page - Texas Instruments |
1 / 6 page SN54HC623, SN74HC623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS149B – DECEMBER 1982 – REVISED MAY 1997 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Lock Bus-Latch Capability D True Logic D High-Current 3-State Outputs Can Drive up to 15 LSTTL Loads D Package Options Include Plastic Small-Outline (DW) and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs description 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 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. The SN54HC623 is characterized for operation over the full military temperature range of –55 °C to 125°C. The SN74HC623 is characterized for operation from –40 °C to 85°C. FUNCTION TABLE INPUTS OPERATION OEBA OEAB OPERATION L L B data to A bus H H A data to B bus H L Isolation L H B data to A bus, A data to B bus Copyright © 1997, 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 OR N 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 |
Аналогичный номер детали - SN74HC623DW |
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Аналогичное описание - SN74HC623DW |
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