Section 6 (Reading) Read the following Figure (Positive logic-Commonly adopted v

Question

Section 6 (Reading) Read the following Figure (Positive logic-Commonly adopted voltage levels) and w a paragraph below about your understanding on the Figure and description therein. [5] rite Positive logic - Commonly adopted voltage levels ou Min -Outputvoltage high minimum with up to 0.4 mA load. A goodchip is guaranteed to output a minimum of 2.7 V logic high up to 0.4 mA 34V VoH Typical o Max- Output voltage low maximum with up to 8 mA load A goodchip is guaranteed to output a maximum of 0.5 volts VoH Min| 1 upto 8mA _VIH Mlin/ 2.0V V Min Input voltage high minimum 2.0 V A goodchip will recognize 2.0V or greater as a logic high and draw no more than 0.02 mA input current. 05V -V0L.Max12 -Ground VL Max = Input voltage low maximum 0.8 V A goodchip will recognize 0.8 V or less as a logic low and draw no more than 0.4 mA inputcurrent.

Explanation / Answer

The figure describes the positive voltage level commonly. VCC is absically supply voltage and is most of the application has 5 V and 0V is considered as ground. VOH Min is2.7 V that means the mininimum output value to considered as high logic is 2.7 V. VOL Max is 0.5 it means that maximum output that is considered as low output is 0.5V. VIH Min is 2.0 V. It means that minimum input that will be considered as high input at is 2 V. Vg max is 0.8 V means that maximum voltage that can be considered as ground is 0.8 V. VOH Typical  is 3.4 V that typically or generally 3.4 V is considered as output high logic that typically circuit at output high gives 3.4 V.

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