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TLC393M Datasheet(PDF) 9 Page - Texas Instruments |
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TLC393M Datasheet(HTML) 9 Page - Texas Instruments |
9 / 23 page TLC193, TLC393 DUAL MICROPOWER LinCMOS ™ VOLTAGE COMPARATOR SLCS115D – DECEMBER 1986 – REVISED JANUARY 1999 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION Propagation delay time is defined as the interval between the application of an input step function and the instant when the output reaches 50% of its maximum value. Propagation delay time, low-to-high-level output, is measured from the leading edge of the input pulse, while propagation delay time, high-to-low-level output, is measured from the trailing edge of the input pulse. Propagation delay time measurement at low input signal levels can be greatly affected by the input offset voltage. The offset voltage should be balanced by the adjustment at the inverting input (as shown in Figure 3) so that the circuit is just at the transition point. Then a low signal, for example, 105 mV or 5 mV overdrive, causes the output to change state. DUT VDD CL (see Note A) Pulse Generator 10 Ω 10 Turn 1 V – 1 V 1 k Ω 50 Ω 1 µF 0.1 µF TEST CIRCUIT 100 mV Input Overdrive 50% tPLH 100 mV Input Overdrive 90% 50% 10% tf tPHL Low-to-High- Level Output High-to-Low- Level Output VOLTAGE WAVEFORMS 5.1 k Ω Input Offset Voltage Compensation Adjustment 90% tr 10% NOTE A: CL includes probe and jig capacitance. Figure 3. Propagation Delay, Rise Time, and Fall Time Circuit and Voltage Waveforms |
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