поискавой системы для электроныых деталей |
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SN74V273-EP датащи(PDF) 2 Page - Texas Instruments |
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SN74V273-EP датащи(HTML) 2 Page - Texas Instruments |
2 / 49 page SN74V263-EP, SN74V273-EP, SN74V283-EP, SN74V293-EP 8192 × 18, 16384 × 18, 32768 × 18, 65536 × 18 3.3-V CMOS FIRST-IN, FIRST-OUT MEMORIES SCAS695A – JUNE 2003 – REVISED JUNE 2003 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description/ordering information (continued) There is flexible ×9/×18 bus matching on both read and write ports. The period required by the retransmit operation is fixed and short. The first-word data-latency period, from the time the first word is written to an empty FIFO to the time it can be read, is fixed and short. These FIFOs are particularly appropriate for network, video, telecommunications, data communications, and other applications that need to buffer large amounts of data and match buses of unequal sizes. Each FIFO has a data input port (Dn) and a data output port (Qn), both of which can assume either an 18-bit or 9-bit width, as determined by the state of external control pins’ input width (IW) and output width (OW) during the master-reset cycle. The input port is controlled by write-clock (WCLK) and write-enable (WEN) inputs. Data is written into the FIFO on every rising edge of WCLK when WEN is asserted. The output port is controlled by read-clock (RCLK) and read-enable (REN) inputs. Data is read from the FIFO on every rising edge of RCLK when REN is asserted. An output-enable (OE) input is provided for 3-state control of the outputs. PZA PACKAGE (TOP VIEW) 22 23 RT OE VCC Q17 Q16 GND GND Q15 Q14 VCC Q13 Q12 GND Q11 GND Q10 VCC Q9 Q8 Q7 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 WEN SEN DNC VCC DNC IW GND D17 VCC D16 D15 D14 D13 GND D12 D11 D10 D9 D8 VCC 25 26 27 28 79 78 77 76 75 80 74 72 71 70 73 29 30 31 32 33 69 68 21 67 66 65 64 34 35 36 37 38 39 40 63 62 61 DNC = Do not connect |
Аналогичный номер детали - SN74V273-EP |
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Аналогичное описание - SN74V273-EP |
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