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SN74AUCH16244DGGR Arkusz danych(PDF) 2 Page - Texas Instruments |
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SN74AUCH16244DGGR Arkusz danych(HTML) 2 Page - Texas Instruments |
2 / 13 page SN74AUCH16244 16-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS SCES391E – MARCH 2002 – REVISED DECEMBER 2002 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description/ordering information (continued) Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. terminal assignments 12 34 5 6 A 1OE NC NC NC NC 2OE B 1Y2 1Y1 GND GND 1A1 1A2 C 1Y4 1Y3 VCC VCC 1A3 1A4 D 2Y2 2Y1 GND GND 2A1 2A2 E 2Y4 2Y3 2A3 2A4 F 3Y1 3Y2 3A2 3A1 G 3Y3 3Y4 GND GND 3A4 3A3 H 4Y1 4Y2 VCC VCC 4A2 4A1 J 4Y3 4Y4 GND GND 4A4 4A3 K 4OE NC NC NC NC 3OE NC – No internal connection FUNCTION TABLE (each 4-bit buffer) INPUTS OUTPUT OE A Y L H H L LL H X Z GQL PACKAGE (TOP VIEW) J H G F E D C B A 2 13 4 6 5 K |
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