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IDT54FCT240EB Datasheet(PDF) 7 Page - Integrated Device Technology |
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IDT54FCT240EB Datasheet(HTML) 7 Page - Integrated Device Technology |
7 / 8 page IDT54/74FCT240/241/244/540/541/A/C FAST CMOS OCTAL BUFFER/LINE DRIVER MILITARY AND COMMERCIAL TEMPERATURE RANGES 7.8 7 TEST CIRCUITS AND WAVEFORMS TEST CIRCUITS FOR ALL OUTPUTS ENABLE AND DISABLE TIMES PROPAGATION DELAY SET-UP, HOLD AND RELEASE TIMES PULSE WIDTH Pulse Generator DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V t SU t H t REM H t SU R T D.U.T. VCC VIN C L V OUT 50pF 500 Ω 500 Ω 7.0V SAME PHASE INPUT TRANSITION 3V 1.5V 0V 1.5V VOH VOL tPLH t PHL OUTPUT OPPOSITE PHASE INPUT TRANSITION CONTROL INPUT 3V 1.5V 0V 3.5V 0V OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH SWITCH CLOSED SWITCH OPEN V OL V OH 3V 1.5V 0V t PLH tPHL 0.3V 0.3V tPLZ tPZL tPZH tPHZ 3.5V 0V 1.5V 1.5V ENABLE DISABLE HIGH-LOW-HIGH PULSE LOW-HIGH-LOW PULSE t W 1.5V 1.5V t NOTES 2606 drw 10 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Pulse Generator for All Pulses: Rate ≤ 1.0 MHz; ZO ≤ 50Ω; tF ≤ 2.5ns; tR ≤ 2.5ns. SWITCH POSITION Test Switch Open Drain Disable Low Closed Enable Low All Other Tests Open DEFINITIONS: 2606 tbl 10 CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. |
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