University of Management & Technology
School of Science & Technology
Department of Electrical Engineering
EE 441 Digital Electronics
Lecture
Schedule
Mon, Wed 12:30 – 14:00 (Sec A)
Fri, Sat 08:00 – 09:30 (Sec B)
Fri, Sat 17:00 – 18:30 (Sec C)
Pre-requisite
EE-209 Electronic Devices and Circuits
Instructor(s)
Jamil Ahmad (Sec B)
Rauf Ali (Sec A)
Syed Mohsin Ali (Sec C)
Semester
Spring 2013
Credit Hours
3+1
Contact
jamil.ahmad@umt.edu.pk
rauf.ali@umt.edu.pk
syed.mohsin@umt.edu.pk@umt.
edu.pk
Office
N/A
Office Hours
See office window
Teaching
Assistant
None
Contact
N/A
Office
N/A
Office Hours
N/A
Course
Description
Transistor inverter design and analysis. Noise margin. Fan-out. Propagation delay.
Switching speed. Detailed design of pulse and switching circuits. Monostable, Astable
and bi-stable circuits. Emitter coupled flip-flop. Schmitt trigger. Precision timing circuits,
Sweep generators. Saturating and non-saturating logic families (DTL, TTL, ECL, I2L,
CMOS). Transfer characteristics, Speed, Power consumption, Detailed study of timer ICs
and their applications, Analogue and digital circuit interface with applications,
Oscillators. Pulse Modulation and multiplexing. The course directly contributes to
objectives a, d, e and f of the HEC Electrical Engineering Curriculum
Expected
Outcomes
In accordance with HEC curriculum outcomes a, b, d, e, g, h & i, students at the end of
the course should be able to
 Understand transistor switches as a building block in digital electronics
 Designing of switches and inverters
 Able to design timing and various vibrator circuits to meet given specs
 Understanding various logic gate familiesand their comparisons
Textbook(s)
Recommended Text:
1.
Solid State Pulse Circuits by David A. Bell, Reston Publishing.
2.
Semiconductor Pulse and Switching Circuits by Santokh S Basi
Reference:
1.
Digital Integrated Circuits by Jan M.Rabaey,AnanthaChandrakasan and
BorivojeNikolic
Assessment
Final Term:
Quizzes & Assignments:
40%
20%
Mid Term:
Lab work:
20%
20%
Course Schedule
Lecture
1
2
3-4
5-6
7-9
10-13
14-16
17
18-19
20-21
22-23
24-25
26-27
28-29
30
Topics
Introduction to Digital Electronics,Review of Ideal
Semiconductor Diode; The Diode Characteristics and
diode operation as a switch; Reverse recovery time
and switching frequency
Bipolar Junction Transistor as a switch, Analytic
expressions for BJT, BJT in saturation and cutoff. BJT
switching times& improvement
Calculations of switching times and frequency, design
of a switch JFET and MOSFET as a switch, their
characteristics, CMOS switch
Design of Inverter circuits, Direct coupled and
capacitor coupled inverters for various operations, JFET
and Op-Amp inverters
Schmitt Trigger Circuits and Voltage Comparators
Monostable and AstableMultivibrators
IC Timer circuits 555 timer,design and modifications to
Astable and Monostable circuits
Midterm
BistableMultivibrators, Collector and Emitter coupled
circuits
Bistable triggering circuits, T-Flip-Flop, SC, JK and D
Flip-Flop
DTL, RTL and ECL gates, I2L logic families
P,N,CMOS gates, Logic gates, Fan-Out and Noise
Margin
Other TTL logic families, High Speed, Low Power and
Schottky TTL
Pulse Modulation Demodulation and Multiplexing
Circuits
Diode and BJT Sampling Gates, Revision of important
articles
Final
Textbook (TB) /
Reference (Ref)
Readings
TB1: Ch-3, TB2: Ch4
TB1: Ch-4
TB1: Ch-4
TB1: Ch-4
TB1: Ch-6
TB1: Ch-7
TB1: Ch-8
TB1: Ch-13
TB1: Ch-13
TB1: Ch-12
TB1: Ch-12,Ref:Ch-1
TB1: Ch-12
TB1: Ch-15
TB1: Ch-15