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Activity 1.1.7: Datasheets | Digital Electronics | Lesson 1.1:…
Activity 1.1.7
Datasheets
Distance Learning Support
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INTRODUCTION
To effectively use integrated chips (IC), you need to know details such as the pin
assignments of an LM555 Timer, the maximum supply voltage of a 74LS08, or
detailed IC information. These details are examples of crucial information available in
the manufacturer’s datasheets.
In this activity, you learn how to access—and extract information from—the
manufacturer’s datasheet for several components commonly used in digital
electronics.
Procedure
Throughout this course, you use an ever-increasing list of integrated circuits.
You will need to access datasheets for these circuits. Since the focus of this
unit is the Random Number Generator design, we will find the datasheets
for each integrated circuit used in that design
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for each integrated circuit used in that design.
1
Using the web, locate the manufacturer’s datasheet for each of the
following integrated circuits. Print the connection diagram and
function table of each IC from pages 1 and 2 of each datasheet.
74LS04 Hex Inverter Gates
74LS08 Quad 2-Input AND Gates
74LS32 Quad 2-Input OR Gates
74LS74 Dual Positive-Edge-Triggered D Flip-Flops with Preset
and Clear pins
LM555 Timer
2
As a digital designer, you occasionally need to redesign an existing
circuit. You will come across part numbers that you are not familiar
with. Use the web to identify the functionality and manufacturer of
each of the part numbers listed below. Note that many parts have
several manufacturers. For this table, list only one. You do not need
to print the datasheets.
Part
IC Name / Function
Manufacturer
Number
DM74LS00
QUAD 2-INput NAND Gate
Fairchild
SN74LS02
IC LS SERIES, QUAD 2-
Texas Instruments
INPUT NOR GATE
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DM74LS75
QUAD LATCH
Fairchild Semiconductor
SN74LS86
TTL Data Book 1980
On Semiconductor
MAN6760
0.560 - INCH SEVEN
Fairchild Semiconductor
SEGMENT DISPLAYS
When you design a digital logic circuit, you often need a gate that performs
a specific function. You may be unsure of its part number.
3
Use the web to identify the 74LS series part number for each of the
following gates.
Note: A 74LS series part means that the part name begins with
"74LS."
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Gate
Gate Name / Function
74LS Series Part Number
Symbol
3 AND GATE
74LS11D
3 NAND
74LS10D
4 AND
74LS21D
4 NAND
74LS22D
3 NOR
74LS27D
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4
The world of electronics is filled with TLAs (Three-Letter Acronyms).
Use the web to identify the following three-letter IC package styles
and copy/paste a sample image of each type.
IC Package
Full Name
Image
Style
DIP
DUAL LINE PACKAGE
SOIC
Small-Outline Integrated
Circuit
QFP
Quad Flat Package
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PLCC
Plastic Leaded Chip Carrier
BGA
Ball grad array
CONCLUSION
1
Using the datasheet you found for the 74LS04 Hex Inverter Gates as a
reference, answer the following questions:
a. What is the nominal Supply Voltage (Vcc)?
b. What is the maximum Free Air Operating Temperature (TA)?
c. What is the typical LOW-to-HIGH Propagation Delay (TPLH)?
d. What is the typical distance between two adjacent pins on a 14-Pin, Dual InLine IC Package?
2
Likewise, in the Introduction section, you were asked;
(i) What is the function of a MAN6760?
(ii) How many pins does an LM555 time have?
(iii) What is the maximum supply voltage for a 74LS08?
MAN6760
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