EGR 270
Fundamentals of Computer Engineering
File: Pinouts
Lab Reference Sheets
This document contains useful information for constructing and testing digital logic circuits,
including:
 Pinouts
 Data sheets
 Capacitor markings and values available in lab
 Standard 5% and 10% Resistor and the resistor color code
 SK-10 breadboard and an example circuits wired on the breadboard
 Building a 5V power supply using a 9V battery and a 5V regulator
This document is available from the instructor’s web page in both Adobe Acrobat format and in
Microsoft Word format. If you download the Microsoft Word file, you can copy any of the pinout
or other information that you wish into lab reports or other locations.
The Drawing Tools in Microsoft Word were used to create the pinouts and circuits. The Drawing
Tools menu usually appears at the bottom of the screen in Word. If it does not, pick View Toolbars - Drawing from the menu. Each pinout has been grouped so that it can be easily moved
and resized. To edit a pinout, select the object and then pick Draw - Ungroup from the Drawing
Tools menu.
Data Sheets
Data sheets for the devices listed below, along with a number of other devices, are available on the
instructor’s web page.
 7400 – Quad 2-input NAND
 74HC00 – CMOS Quad 2-input NAND
 7401 – Open-collector Quad 2-input NAND
 7406/7416 – Open-collector inverter
 7447A – BCD-to-7-segment-decoder/driver (for common anode displays)
 7476– JK flip-flop with Preset and Clear
 74151 – 8x1 multiplexer (data selector)
 74155/74156 – Dual 2x4 decoder
 74191 – Synchronous 4-Bit Up/Down Counter
 555 – Timer
 GAL22V10 – Programmable Logic Device (PLD)
Page 2
14
13
12
11
10
9
8
Vcc
14
13
12
11
10
9
3
4
5
6
7
7400 Quad 2-input NAND
14
13
12
11
10
9
8
Vcc
2
3
4
5
6
4
5
6
7
14
13
12
11
10
9
13
12
11
10
9
8
4
13
12
11
5
6
7
10
9
8
Vcc
2
3
14
13
12
4
5
6
7
11
10
9
8
4
14
13
1
2
5
12
3
14
13
12
7
7427 Triple 3-input NOR
11
10
9
8
2
3
4
5
6
7
7411 Triple 3-input AND
14
13
12
11
4
5
6
7
11
10
9
5
6
10
9
8
1
2
NC
3
Gnd
4
7
7420 Dual 4-input NAND
14
13
12
11
10
9
5
6
8
Vcc
7486
Gnd
1
8
NC
7432
6
7
7408 Quad 2-input AND
Gnd
1
Gnd
3
6
7420
Vcc
2
4
7402 Quad 2-input NOR
Vcc
7427
1
3
7411
7410 Triple 3-input NAND
14
2
Gnd
1
Gnd
3
5
8
7408
Vcc
2
9
Vcc
7410
1
8
7405, 7406, 7416 Hex Inverter
(open-collector outputs)
Vcc
10
Gnd
1
7405, 7406, 7416
7404 Hex Inverter
14
7
7401 Quad 2-input NAND
(open-collector outputs)
Gnd
3
11
7402
Vcc
2
12
Gnd
1
7404
1
13
7401
Gnd
2
14
Vcc
7400
1
8
Vcc
2
3
4
5
6
7432 Quad 2-input OR
7
Gnd
1
2
3
4
7
7486 Quad 2-input Exclusive-OR
16
16
15
Vcc
14
f
g
13
12
a
10
11
b
c
d
9
e
4
5
3
7
1
2
C
1
2
LT BI/RBO RBI
3
4
RBI
OUTA
LT
OUTB
13
12
11
OUTC
7447A
B
Page 3
Vcc
BI/RBO
5
D
A
Gnd
6
7
8
6
10
INA
OUTD
INB
OUTE
INC
OUTF
IND
OUTG
GND
9
15
14
7447A
7447A BCD to 7-segment decoder/driver: Pinout and Logic Symbol
8
1K
1Q
1Q
Gnd
2K
2Q
2Q
2J
16
15
14
13
12
11
10
9
2
7
U1A
U1B
PRE
CLR
PR
K
Q
4
J
Q
PRE
J
15
Q
1
CK
J
Q
K
Q
7476
PR
6
CLK
CK
16
9
K
14
Q
12
2
1CK 1PR
3
4
5
1CLR
1J
Vcc
6
2CK
7
8
2PR
2CLR
B4
4
C4
C0
Gnd
B1
A1
1
16
15
14
13
12
11
10
9
4
C4
C0
B1
A1
1
B4
7483A
A4
A2
1
A4
A3
2
3
3
A3
7476
3
2
B3
B2
4
5
6
7
8
B3
Vcc
2
B2
A2
1
A4
3
A3
8
A2
10
A1
16
B4
4
B3
7
B2
11
B1
13
C0
14
C4
SUM4
SUM3
SUM2
15
2
6
SUM1
9
7483A
7483A 4-Bit Adder: Pinout and Logic Symbol
Vcc
A3
B2
A2
A1
B1
A0
B0
16
15
14
13
12
11
10
9
A3
B2
A2
A1
B1
A0
7485
B3
A<B
in
A=B
in
A>B
in
11
CLK
K
Q
10
CLR
7476 Dual JK Flip-Flop: Pinout and Logic Symbols
3
Q
CLR
CLR
1
J
A>B
out
1
2
3
4
5
B3
A<B
in
A=B
in
A>B
in
A>B
out
B0
A=B A<B
out
out
6
7
A=B A<B
out
out
8
Gnd
1
15
14
13
11
12
9
10
2
3
4
B3
A3
B2
A2
B1 A<B
A1 A=B
B0 A>B
A0
A<B_IN
A=B_IN
A>B_IN
7
6
5
7485
7485 4-Bit Magnitude Comparator: Pinout and Logic Symbol
8
7476
CKA
NC
QA
QD
Gnd
QB
QC
14
13
12
11
10
9
8
Page 4
6 R91
7
R92
QA
QD
7490A
B
R02
QC
14
R92
1
CKA QB
QC
CKB
1
2
9
8
R91
2
R01
3
R02
CKB R01
12
QB
A
R01
QA
3
4
5
6
7
R02
NC
Vcc
R91
R92
QD
11
7490A
7490A Decade Counter: Pinout and Logic Symbol
CKA
NC
QA
QD
Gnd
QB
QC
14
13
12
11
10
9
8
QA
QD
14
QB
QC
A
1
7493A
R01
1
2
CKB R01
QA
CKB
9
QB
8
QC
11
QD
2 R01
3 R02
B
R02
12
CKA
7493A
3
4
5
6
7
R02
NC
Vcc
NC
NC
7493A 4-Bit Binary Counter: Pinout and Logic Symbol
Vcc
QA
QB
QC
QD
CLK1
CLK2
14
13
12
11
10
9
8
6
QA
QB
Serial
Input
InA
1
Serial
Input
QC
QD
7495A
InB
2
3
Input
A
Input
B
InC
InD
4
5
Input Input
C
D
MODE
1
SER
9
CLK1
8
CLK2
2
A
3
B
4
C
5
D
CLK1
CLK2
Mode
6
Mode
7
13
QA
12
QB
11
QC
10
QD
7495A
Gnd
7495A 4-Bit Parallel-Load Shift Register: Pinout and Logic Symbol
Vcc
I4
I5
I6
I7
S0
S1
S2
16
15
14
13
12
11
10
9
I4
I5
I2
I3
I7
S0
E
4
3
2
1
15
14
13
12
11
10
9
S1
74151
I3
1
I6
2
I2
I1
I0
Z
S2
Z
7
3
4
5
6
7
8
I1
I0
Z
Z
E
Gnd
E
I0
I1
I2
I3
I4
I5
I6
I7
Z
Z
5
6
S0
S1
S2
74151A
74151 8x1 Data Selector/Multiplexer: Pinout and Logic Symbol
Vcc
2C
2G
A
2Y3
2Y2
2Y1
2Y0
16
15
14
13
12
11
10
9
Page 5
2
1G
1
1C
2C
2G
A
2Y3
2Y2
2Y1
13
74155/74156
1C
B
1G
1Y3
1Y2
2Y0
1Y1
3
1Y0
14
15
1
1C
2
3
1G
B
4
5
6
7
1Y3
1Y2
1Y1
1Y0
8
A
1Y0
1Y1
1Y2
1Y3
B
2Y0
2Y1
2G
2Y2
2Y3
2C
7
6
5
4
9
10
11
74155 – Totem Pole Outputs
74156 – Open-Collector Outputs
12
74155/74156
Gnd
74155/74156 Dual 2-Line To 4-Line Decoder/Demultiplexer: Pinout and Logic Symbol
Vcc
A
CLK
RCO
MAX/
MIN LOAD
C
D
16
15
14
13
12
10
9
A
CLK
11
RCO MAX/
MIN
LOAD C
D
74190/74191
B
QA
QB
1
2
B
QB
CTEN
3
4
QA
CTEN
13
4
CTEN RCO
5
D/U
14
CLK
11
LOAD
12
MAX/MIN
15 A
3
QA
1
2
B
QB
10
6
C
QC
9
7
D
QD
D/U
QC
QD
5
6
7
8
D/U
QC
QD
Gnd
74190 – BCD Counter
74191 – 4-Bit Binary Counter
74190/74191
74190/74191 Synchronous Up/Down Counter: Pinout and Logic Symbol
Vcc
A
CLR
BO
CO
16
15
14
13
12
LOAD
11
C
D
10
9
5
A
CLR
BO
CO
LOAD C
D
74192/74193
B
QA
QB
1
2
B
QB
DOWN UP
3
4
QA
DOWN
UP
4
3
DOWN QA
14
2
CLR
QB
11
6
LOAD QC
7
QD
15 A
1
13
B
BO
10
12
C
CO
9
D
QC
QD
5
6
7
8
UP
QC
QD
Gnd
74192 – BCD Counter
74193 – 4-Bit Binary Counter
74192/74193
74192/74193 Synchronous Up/Down Counter: Pinout and Logic Symbol
Input/ Input/ Input/ Input/ Input/ Input/ Input/ Input/ Input/ Input/
Vcc Output Output Output Output Output Output Output Output Output Output Input
22
21
20
18
17
16
14
13
23
19
15
24
GAL22V10
1
Input/
Clock
2
3
4
Input Input Input
5
6
7
8
9
10
11
12
Input
Input
Input
Input
Input
Input
Input
Gnd
GAL22V10 PLD (Programmable Logic Device)
Vcc
Page 6
8
R
4
8
A
Vcc
Reset
Vcc
7 Discharge
6
5
555
Gnd
Trigger
Output
1
2
3
Output 3
R
7
Discharge Threshold Control
Voltage
Reset
4
B
Control
Voltage 5
6 Threshold
C
Ground
1
Trigger
2
0.01 uF
Example: If C = 0.1 F, RA = 5 k, and
RB = 4.4 k,
then TH = 651.4 s, TL = 304.9 s,
T = 956.3 s, f = 1046 Hz, and D = 68.1 %
555 Timer connected as an astable multivibrator (clock generator)
TH = 0.693(R A + R B )C
Output
Voltage
TL = 0.693(R B )C
T
T = TH + TL = 0.693(R A + 2R B )C
f=
Vcc
1
1.44
=
T
 R A + 2R B  C
TH
T
RA + RB
D = Duty Cycle = H =
x 100%
T
R A + 2R B
TL
Time
0
Vcc
R
8
Vcc
4
Reset
8
7 Discharge
Vcc
output
Output 3
7
5
Threshold Control
Voltage
555
C
6 Threshold
input
trigger
pulse
6
Discharge
Trigger
2
Control 5
Voltage
Ground
1
Gnd
Trigger
Output
1
2
3
Reset
4
0.01 uF
555 Timer connected as a monostable multivibrator (one-shot)
Trigger
Voltage
Vcc
Falling edge of trigger
voltage fires the one-shot
Trigger should return
to Vcc
Time
Output
Voltage
Vcc
T = 1.1RC
Time
Example: If C = 0.1 F and R = 47 k,
then T = 1.1(47 k)(0.1 F) = 5.17 ms.
So, each time the one-shot is triggered, an
output pulse with a duration of 5.17 ms is
produced.
Page 7
Out3
Out4
Gnd
In4+
In4-
In3+
In3-
14
13
12
11
10
9
8
6
In2-
7
In2+
+
E
+
_
_
7805
LM339
B
+
+
_
_
B
C
C
1
Out2
E
2
Out1
3
Vcc
4
In1-
5
In1+
LM339 Quad Comparator
(open-collector outputs)
TIP30 PNP Transistor Symbol and Pin Assignment
7805
+
+
5V out
6 – 35V in
_
_
7805 5V Regulator
1
Vin
+
2
Vout
240
3 (ADJ)
Vin
+
LM317T
C2
1F
C1
0.F
Vout
5k
_
LM317T Adjustable Regulator
Notes:
1) C1 is optional – improves transient response
2) C2 is needed only if device is far from filter capacitors
3) Vout adjustable +1.2V to +37V
4) Vout is tied to the heat sink
_
3
2 1
ADJ Vout Vin
Page 8
8
7
Gnd
-VDC
6
Output
5
Offset2
3
+
A741
NonInverting Inverting
+VDC
Offset1 Input
Input
1
2
3
+VDC
OS2
7
5
6
uA741
2
-
4
4
OS1
-VDC
OUT
1
A741 Operational Amplifier: Pinout and Symbol
(MSB) D
C
B
A
7447
a
b
c
d
e
f
g
a
b
c
d
e
f
g
BCD to 7-segment decoder
(with active-LOW outputs)
(MSB) D
C
B
A
7448
a
b
c
d
e
f
g
14
13
a
1
No
Pin
2
3
g b
e
c
cathode
d
f
e
g
d
b
anode
c
9
8
14
13
c
NC
d
a
b
No
Pin
DP
e
f
6
7
1
g
2
cathode
a
Common-cathode
7-segment display
10
(common anode connection to Vcc)
Typical segment
a
g
Common Anode 7-segment Display
anode
+5V
a
Common-anode
7-segment display
11
Common No
Anode Pin
f
f
a
b
c
d
e
f
g
BCD to 7-segment decoder
(with active-HIGH and outputs)
Common b
Anode
a
Typical segment
12
Common No
Cathode Pin
No
Pin
No Common No
Pin Cathode Pin
4
9
8
DP
c
e
d
6
7
Common Cathode 7-segment Display
(common cathode connection to ground)
Page 9
Capacitor values available in the EGR 270 lab
(all values are in F)
.001
.0022
.0033
.0047
.0068
.01
.015
.022
.027
.033
.047
.1
.15
.22
.27
.33
.47
.56
.68
.82
.068
.082
1
2.2
3
3.3
4.7
5
6.8
10
12, 15
22
25
33
47
50
100
120
200, 220
1000
1500
470
500
"Hold it! I said 2 MICRO farads!"
Polarized capacitors:
Polarity is important on some capacitors. Most capacitors that look like metal cans are electrolytic capacitors and are
polarized. If a capacitor is polarized it should have a terminal marked as being positive (+) or negative (-). Be sure to
connect it with the proper polarity. Connecting a polarized capacitor with reverse polarity can sometimes yield errors
and in extreme cases the capacitors can explode! Some common markings for polarized capacitors are shown below.
+
+
+
_
_
_
_
+
+
+
+
The longer lead is
generally positive
Capacitors values:
Capacitors vary tremendously in size, color, shape, and material. The markings on capacitors also vary considerably
and they can often be difficult to interpret since various styles are used to specify the value of capacitance. It is a good
idea to check capacitor values in lab using an impedance bridge if one is available. Several examples of labels found
on capacitors are shown below.
3 UF
C = 3 F
+47
+35V
C = 47 F
35V rating
+ terminal marked
10 MFD
C = 10 F
47/25
M
C = 47 F
25V rating
M = 20% tolerance
104
100 MMFD
C = 100 pF
(Note that MMFD = F
= 10-610-6F = 10-12F = pF)
.001K
1000
100J
C = 0.001 F
C = 100 pF
1000V rating
J = 5% tolerance
K = 10% tolerance
C = 0.1 F
(Note that 104 = 10 x 104 pF
= 10510-12F = 10-7F
= 0.1 x 10-6 F = 0.1 F)
Page 10
Standard values of commercially available resistors
Ohms
Kilohms
Megohms
()
(k)
(M)
0.10
1.0
10
100 1000
10
100
1.0
10.0
0.11
1.1
11
110 1100
11
110
1.1
11.0
0.12
1.2
12
120 1200
12
120
1.2
12.0
0.13
1.3
13
130 1300
13
130
1.3
13.0
0.15
1.5
15
150 1500
15
150
1.5
15.0
0.16
1.6
16
160 1600
16
160
1.6
16.0
0.18
1.8
18
180 1800
18
180
1.8
18.0
0.20
2.0
20
200 2000
20
200
2.0
20.0
0.22
2.2
22
220 2200
22
220
2.2
22.0
0.24
2.4
24
240 2400
24
240
2.4
0.27
2.7
27
270 2700
27
270
2.7
0.30
3.0
30
300 3000
30
300
3.0
0.33
3.3
33
330 3300
33
330
3.3
0.36
3.6
36
360 3600
36
360
3.6
0.39
3.9
39
390 3900
39
390
3.9
0.43
4.3
43
430 4300
43
430
4.3
0.47
4.7
47
470 4700
47
470
4.7
0.51
5.1
51
510 5100
51
510
5.1
0.56
5.6
56
560 5600
56
560
5.6
0.62
6.2
62
620 6200
62
620
6.2
0.68
6.8
68
680 6800
68
680
6.8
0.75
7.5
75
750 7500
75
750
7.5
0.82
8.2
82
820 8200
82
820
8.2
0.91
9.1
91
910 9100
91
910
9.1
Notes: All values are available with 5% tolerance.
Only the bold values are available with 10% tolerance.
Resistor Color Code
Carbon resistors are typically color-coded using four colored bands labeled A, B, C, and D as indicated below.
Bands A, B, C
Black
0
Brown
1
Red
2
Orange
3
Yellow
4
Green
5
Blue
6
Violet
7
Gray
8
White
9
Gold
-1
Silver
-2
Band D
Gold
Silver
No band
5%
10%
20%
A B C
D
A – First significant digit
B – Second significant digit
C – Exponent
D – Tolerance
Resistance value: R = AB x 10C
Ex: Green, Blue, Red, Silver
R = 56 x 102 = 5.6 k, 10% tolerance
The size of a carbon resistor indicates its power rating.
¼W
½W
1W
2W
Page 11
SK-10 Solderless Breadboard (or equivalent)
A
B
Internal Connections on the SK-10 Solderless Breadboard
Notes:
1) Lines indicate which holes are connected under the breadboard.
2) To connect two or more wires together, plug them in the same row of holes.
3) Holes A and B are connected on some breadboards (as well as the similar holes on the
other horizontal rows).
Page 12
Example: Connect the following circuit using the SK-10 solderless breadboard.
5.6 k
10 V
+
_
1.0 k
3.3 k
2.2 k
1.5 k
Connections to
10 V power supply
Jumper
+
_
Jumper
Page 13
Example: Connect the following circuit using the SK-10 solderless breadboard.
Switch_A
Switch_B
13
U1
11
12
12
U2
Switch_C
11
LED
13
Jumper
OFF
7408
ON
7432
ABC
Jumper
+
_
7805
9V Battery
+
6 – 35V in
_
+
5V out
_
Notes:
7805 5V Regulator
1) The DIP switch operates as follows:
ON – Provides a logical 0 (LOW). Closed switch makes connection to ground.
OFF – Provides a logical 1 (HIGH). Open switch provides 5V through the 2.2k resistor.
(It is often useful to install the switch upside down so that ON (LOW) is on the bottom.)
2) The switch positions shown above (darkened) provide an input of 110 causing the red LED to
light indicating that the output is logical 1 (HIGH).
3) Cutting wires to length and using a wire color scheme makes for a neat circuit that is easy to
troubleshoot. In the circuit above the following color scheme was used:
RED – 5V
BLACK – Ground (0V)
GREEN – Switch connections
BLUE – Other connections