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SN74AS842DW Scheda tecnica(PDF) 2 Page - Texas Instruments |
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SN74AS842DW Scheda tecnica(HTML) 2 Page - Texas Instruments |
2 / 11 page OC CD Q LH H L LHL H LL X Q0 HX X Z OC CD Q LH H H LHL L LL X Q0 HX X Z INPUTS OUTPUT INPUTS OUTPUT ’ALS841, ’AS841 ’ALS842, ’AS842 SN54ALS841, SN54AS841, SN54ALS842, SN54AS842 SN74ALS841, SN74AS841, SN74ALS842, SN74AS842 10-BIT BUS INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS SDAS059B – D2910, DECEMBER 1983 – REVISED MAY 1986 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2 description (continued) A buffered output control (OC) input can be used to place the ten outputs in either a normal logic state (high or low levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive the bus lines in a bus-organized system without need for interface or pullup components. The output control does not affect the internal operation of the latches. Old data can be retained or new data can be entered while the outputs are off. The - 1 versions of the SN74ALS841 and SN74ALS842 parts are identical to the standard versions except that the recommended maximum IOL is increased to 48 mA. There are no -1 versions of the SN54ALS841 and SN54ALS842. The SN54ALS841, SN54AS841, SN54ALS842, and SN54AS842 are characterized for operation over the full military temperature range of – 55 °C to 125°C. The SN74ALS841, SN74AS841, SN74ALS842, and SN74AS842 are characterized for operation from 0 °C to 70°C. Function Tables |
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