A transistor schematic diagram of a CMOS digital circuit consisting of four MOSFETs is shown in the following figure (Fig. 3.1). The truth table of the digital circuit is also given. VA VB 0- M3 VDD M4 - Vout VA OV OV 3 V 3 V Fig. 3.1 (a). Sketch the logic gate symbol of the digital circuit (Fig. 3.1)? VB OV 3 V OV 3 V Vout 3 V 3 V 3 V OV (d). Sketch a transistor schematic diagram of the same logic gate (Q3(a)) implemented in CMOS but with three inputs (VÃ, Vâ, and Vc). (e). If only n-channel MOSFETs can be used to implement the digital circuit in Fig. 3.1, sketch a transistor schematic diagram of such NMOS implementation. Note: In Q3(b), Q3(d) and Q3(e) above, you must use standard circuit symbols and show the signal interconnections clearly with proper labels.

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A transistor schematic diagram of a CMOS digital circuit consisting of four MOSFETs is shown
in the following figure (Fig. 3.1). The truth table of the digital circuit is also given.
VA
VB 0-
M3
VDD
M4
- Vout
VA
OV
OV
3 V
3 V
Fig. 3.1
(a). Sketch the logic gate symbol of the digital circuit (Fig. 3.1)?
VB
OV
3 V
OV
3 V
Vout
3 V
3 V
3 V
OV
(d). Sketch a transistor schematic diagram of the same logic gate (Q3(a)) implemented in CMOS
but with three inputs (VÃ, Vâ, and Vc).
(e). If only n-channel MOSFETs can be used to implement the digital circuit in Fig. 3.1, sketch a
transistor schematic diagram of such NMOS implementation.
Note: In Q3(b), Q3(d) and Q3(e) above, you must use standard circuit symbols and show the signal
interconnections clearly with proper labels.
Transcribed Image Text:A transistor schematic diagram of a CMOS digital circuit consisting of four MOSFETs is shown in the following figure (Fig. 3.1). The truth table of the digital circuit is also given. VA VB 0- M3 VDD M4 - Vout VA OV OV 3 V 3 V Fig. 3.1 (a). Sketch the logic gate symbol of the digital circuit (Fig. 3.1)? VB OV 3 V OV 3 V Vout 3 V 3 V 3 V OV (d). Sketch a transistor schematic diagram of the same logic gate (Q3(a)) implemented in CMOS but with three inputs (VÃ, Vâ, and Vc). (e). If only n-channel MOSFETs can be used to implement the digital circuit in Fig. 3.1, sketch a transistor schematic diagram of such NMOS implementation. Note: In Q3(b), Q3(d) and Q3(e) above, you must use standard circuit symbols and show the signal interconnections clearly with proper labels.
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