Digital Circuits
1
GATE ECE 2005
MCQ (Single Correct Answer)
+1
-0.3
The transistors used in a portion of the TTL gate shown in figure have β=100. the base-emitter voltage of is 0.7V for a transistor in active region and 0.75V for a transistor in saturation . If the sink current I=1mA and the output is at logic 0,
then the current $${I_R}$$ I will be equal to
2
GATE ECE 2004
MCQ (Single Correct Answer)
+1
-0.3
Figure shows the internal schematic of a TTL AND-OR-Invert (AOI) gate. For the inputs shown in Figure, the output Y is
3
GATE ECE 2003
MCQ (Single Correct Answer)
+1
-0.3
The output of the 74 series of TTL gates is taken from a BJT in
4
GATE ECE 1999
MCQ (Single Correct Answer)
+1
-0.3
Commercially available ECL gates use two ground lines and one negative supply in order to
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics