ECE 188: Computer Interface Circuits
Catalog description: 3.0 units
The use of computer simulation in circuit analysis and design is emphasized. Pulse
and digital wave shaping circuits for integrated circuit families (TTL, CMOS, ECL,
TTL). Power supplies as applied to both large- and small-scale systems; power and
ground buss structures. Line drivers and receivers; single-ended versus differentially
driven lines.
Prerequisites: ECE 085, ECE 145
Course objectives: For students to
1. Understand how to design pulse shaping circuits, interfaces, line drivers, and
busses
2. Know how to use commercial components and chips to implement these functions
in a useable computer system
Course outcomes: Students shall be able to
1. Calculate the voltage and current transfer characteristics of switching circuits
including TTL, IIL, CMOS, and ECL integrated circuits
2. Calculate rise and fall times
3. Make measurements and compare with theoretical calculations
4. Design power buss distribution to eliminate ground loops in small and large
computer systems
5. Design and test clipping and clamping circuits
6. Calculate and analyze performance of operational amplifiers and comparators
7. Predict the characteristics as well as design and test amplifiers, level converters,
Schmitt triggers, pulse and wave-shaping circuits
8. Calculate transmission line delays and terminations
Topics covered
1. Diode clippers and clampers
2. Voltage multipliers
3. Time and frequency domain correlation (rise time/bandwidth)
4. Logic families (TTL, CMOS, I2L, ECL) interfacing techniques between logic
types
5. Opto-electronic devices and applications
6. Switching circuits
7. Relay drivers/motor drivers (AC/DC)
8. Operational amplifier/comparator applications
9. Power buss distribution (ground loops) for small and large computer systems
10. Interface circuits (line drivers and receivers; single ended and differentially driven
lines)
11. Digital transmission line termination techniques
Class/Laboratory schedule
One hundred fifty minutes of lecture per week
Contribution of course to meet the professional component
This course contributes to the student’s ability to work professionally analyzing and
designing complex electrical and electronic devices.
Relationship of course to Mechatronic Engineering Program Outcomes
This course contributes principally to Program Outcomes A, C, and D.