List some types of information available
to engineers and technicians on a typical manufacturer's
IC data sheet. Look at the data sheet for the 7408 or
74LS08 AND gate IC. (use data manuals from library or
download data sheets from www.fairchildsemi.com)
Write a short description of how an
electromagnet and a relay operate. Use diagrams if possible.
(use www.howstuffworks.com)
Refer to Fig. 5-1 below to explain how
the NPN transistor operates as a switch. You may use computer
circuit simulator software to set up and operate this
circuit. <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::Figure 5-1::/sites/dl/free/0073126349/443700/fig5_1.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif">Figure 5-1 (4.0K)</a>Figure 5-1
Refer to Fig. 5-2 below and use computer simulation
software to draw an input voltage profile for the 4000 CMOS IC1. <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::Figure 5-2::/sites/dl/free/0073126349/443700/fig5_2.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif">Figure 5-2 (3.0K)</a>Figure 5-2
Refer to Fig. 5-1 in Digital Electronics,
7th edition, textbook. The following input voltages
to a TTL IC (assume a +5V supply) would be interpreted
as HIGH, LOW, or undefined:
+4V
+0.2V
+1.5V
+2.2V
Refer to Fig. 5-2(a) in Digital Electronics,
7th edition, textbook. The following input voltages
to a CMOS 4000-series or CMOS-74C00 series IC (assume
a +10V supply) would be interpreted as HIGH, LOW, or undefined:
+0.1V
+9.9V
+5V
+2V
+8V
Refer to Fig. 5-2(b) in Digital Electronics,
7th edition, textbook. The following input voltages
to a CMOS 74HC00-series IC (assume a +5V supply) would
be interpreted as HIGH, LOW, or undefined:
+4.5V
+0.1V
+2.2V
+0.5V
+3V
Refer to Fig. 5-2(c) in Digital Electronics,
7th edition, textbook. The following input voltages
to a CMOS 74FCT00-series IC (assume a +5V supply) would
be interpreted as HIGH, LOW, or undefined:
+4V
+2.2V
+0.2V
+1.5V
+1V
Write a short paragraph explaining
what we mean by noise margin as an IC specification? Diagrams
might be useful.
What CMOS logic family seems to have
excellent drive capabilities?
Refer to Fig. 5-3 below. When interfacing between TTL
and CMOS (4000 or 74C00 series) component R1 is required.
What is resistor R1 called and what is its purpose? <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::Figure 5-3::/sites/dl/free/0073126349/443700/fig5_3.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif">Figure 5-3 (2.0K)</a>Figure 5-3
Use circuit simulation software to
draw the interfacing circuit in
Fig. 5-24(b) in the textbook (TTL or FACT
to buzzer with transistor driver),
check its operation, and
demonstrate its operation to your
instructor.
Use circuit simulation software to
draw the interfacing circuit in
Fig. 5-26(a) in the textbook (TTL or FACT
to motor using transistor driver and a relay for isolation),
