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Электронный компонент: 74LS145

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Semiconductor Components Industries, LLC, 1999
December, 1999 Rev. 6
1
Publication Order Number:
SN74LS145/D
SN74LS145
1-of-10 Decoder/Driver
Open-Collector
The SN74LS145, 1-of-10 Decoder/Driver, is designed to accept
BCD inputs and provide appropriate outputs to drive 10-digit
incandescent displays. All outputs remain off for all invalid binary
input conditions. It is designed for use as indicator/relay drivers or as
an open-collector logic circuit driver. Each of the high breakdown
output transistors will sink up to 80 mA of current. Typical power
dissipation is 35 mW. This device is fully compatible with all TTL
families.
Low Power Version of 74145
Input Clamp Diodes Limit High Speed Termination Effects
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
V
CC
Supply Voltage
4.75
5.0
5.25
V
T
A
Operating Ambient
Temperature Range
0
25
70
C
V
OH
Output Voltage High
15
V
I
OL
Output Current Low
24
mA
LOW
POWER
SCHOTTKY
Device
Package
Shipping
ORDERING INFORMATION
SN74LS145N
16 Pin DIP
2000 Units/Box
SN74LS145D
16 Pin
SOIC
D SUFFIX
CASE 751B
http://onsemi.com
2500/Tape & Reel
PLASTIC
N SUFFIX
CASE 648
16
1
16
1
SN74LS145
http://onsemi.com
2
CONNECTION DIAGRAM DIP (TOP VIEW)
BCD Inputs
Outputs
P
0
, P
1
, P
2
, P
3
Q
0
Q
9
0.5 U.L.
Open Collector
0.25 U.L.
15 U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40
mA HIGH/1.6 mA LOW.
HIGH
LOW
(Note a)
LOADING
PIN NAMES
V
CC
= PIN 16
GND = PIN 8
LOGIC SYMBOL
15 14 13 12
P
0
P
1
P
2
P
3
Q
0
Q
1
Q
2
Q
3
Q
4
Q
6
Q
7
Q
8
Q
9
Q
5
1
2
3
4
5
6
7 9 10 11
14
13
12
11
10
9
1
2
3
4
5
6
7
16
15
8
V
CC
Q
0
P
0
P
1
P
2
P
3
Q
8
Q
9
Q
7
Q
1
Q
2
Q
3
Q
4
Q
5
Q
6
GND
SN74LS145
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3
LOGIC DIAGRAM
INPUTS
INPUT
INVERTERS
DECODE/DRIVER
GATES
OUTPUTS
P
0
P
1
P
2
P
3
0
1
2
3
0
1
2
3
Q
0
Q
1
Q
2
Q
3
Q
4
Q
5
Q
6
Q
7
Q
8
Q
9
TRUTH TABLE
INPUTS
OUTPUTS
P
3
P
2
P
1
P
0
Q
0
Q
1
Q
2
Q
3
Q
4
Q
5
Q
6
Q
7
Q
8
Q
9
L
L
L
L
L
H
H
H
H
H
H
H
H
H
L
L
L
H
H
L
H
H
H
H
H
H
H
H
L
L
H
L
H
H
L
H
H
H
H
H
H
H
L
L
H
H
H
H
H
L
H
H
H
H
H
H
L
H
L
L
H
H
H
H
L
H
H
H
H
H
L
H
L
H
H
H
H
H
H
L
H
H
H
H
L
H
H
L
H
H
H
H
H
H
L
H
H
H
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
L
L
L
H
H
H
H
H
H
H
H
L
H
H
L
L
H
H
H
H
H
H
H
H
H
H
L
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H = HIGH Voltage Level
L = LOW Voltage Level
SN74LS145
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4
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
V
IH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
V
IL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage for
All Inputs
V
IK
Input Clamp Diode Voltage
0.65
1.5
V
V
CC
= MIN, I
IN
= 18 mA
I
OH
Output HIGH Current
250
A
V
CC
= MIN, V
OH
= MAX
0.25
0.4
V
I
OL
= 12 mA
V
CC
= V
CC
MIN,
V
OL
Output LOW Voltage
0.35
0.5
V
I
OL
= 24 mA
V
CC
= V
CC
MIN,
V
IN
= V
IL
or V
IH
T
h T bl
2.3
3.0
V
I
OL
= 80 mA
per Truth Table
I
Input HIGH Current
20
A
V
CC
= MAX, V
IN
= 2.7 V
I
IH
Input HIGH Current
0.1
mA
V
CC
= MAX, V
IN
= 7.0 V
I
IL
Input LOW Current
0.4
mA
V
CC
= MAX, V
IN
= 0.4 V
I
CC
Power Supply Current
13
mA
V
CC
= MAX, V
IN
= GND
AC CHARACTERISTICS
(T
A
= 25
C)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
t
PHL
t
PLH
Propagation Delay
P
n
Input to Q
n
Output
50
50
ns
V
CC
= 5.0 V
C
L
= 45 pF
AC WAVEFORMS
Figure 1.
Figure 2.
V
IN
V
OUT
1.3 V
t
PHL
1.3 V
1.3 V
t
PLH
1.3 V
V
IN
V
OUT
1.3 V
t
PHL
1.3 V
1.3 V
t
PLH
1.3 V
SN74LS145
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5
PACKAGE DIMENSIONS
N SUFFIX
PLASTIC PACKAGE
CASE 64808
ISSUE R
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
5. ROUNDED CORNERS OPTIONAL.
A
B
F
C
S
H
G
D
J
L
M
16 PL
SEATING
1
8
9
16
K
PLANE
T
M
A
M
0.25 (0.010)
T
DIM
MIN
MAX
MIN
MAX
MILLIMETERS
INCHES
A
0.740
0.770
18.80
19.55
B
0.250
0.270
6.35
6.85
C
0.145
0.175
3.69
4.44
D
0.015
0.021
0.39
0.53
F
0.040
0.70
1.02
1.77
G
0.100 BSC
2.54 BSC
H
0.050 BSC
1.27 BSC
J
0.008
0.015
0.21
0.38
K
0.110
0.130
2.80
3.30
L
0.295
0.305
7.50
7.74
M
0
10
0
10
S
0.020
0.040
0.51
1.01
_
_
_
_
SN74LS145
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6
PACKAGE DIMENSIONS
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B05
ISSUE J
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
1
8
16
9
SEATING
PLANE
F
J
M
R
X 45
_
G
8 PL
P
B
A
M
0.25 (0.010)
B
S
T
D
K
C
16 PL
S
B
M
0.25 (0.010)
A
S
T
DIM
MIN
MAX
MIN
MAX
INCHES
MILLIMETERS
A
9.80
10.00
0.386
0.393
B
3.80
4.00
0.150
0.157
C
1.35
1.75
0.054
0.068
D
0.35
0.49
0.014
0.019
F
0.40
1.25
0.016
0.049
G
1.27 BSC
0.050 BSC
J
0.19
0.25
0.008
0.009
K
0.10
0.25
0.004
0.009
M
0
7
0
7
P
5.80
6.20
0.229
0.244
R
0.25
0.50
0.010
0.019
_
_
_
_
SN74LS145
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7
Notes
SN74LS145
http://onsemi.com
8
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without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular
purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability,
including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be
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alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.
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SN74LS145/D
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