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.
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•
Low Power Version of 74145
•
Input Clamp Diodes Limit High Speed Termination Effects
GUARANTEED OPERATING RANGES
Symbol
V
CC
T
A
V
OH
I
OL
Parameter
Supply Voltage
Operating Ambient
Temperature Range
Output Voltage – High
Output Current – Low
Min
4.75
0
Typ
5.0
25
Max
5.25
70
15
24
Unit
V
°C
V
mA
16
LOW
POWER
SCHOTTKY
1
PLASTIC
N SUFFIX
CASE 648
16
1
SOIC
D SUFFIX
CASE 751B
ORDERING INFORMATION
Device
SN74LS145N
SN74LS145D
Package
16 Pin DIP
16 Pin
Shipping
2000 Units/Box
2500/Tape & Reel
©
Semiconductor Components Industries, LLC, 1999
1
December, 1999 – Rev. 6
Publication Order Number:
SN74LS145/D
SN74LS145
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Limits
Symbol
V
IH
V
IL
V
IK
I
OH
V
OL
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Current
0.25
Output LOW Voltage
0.35
2.3
I
IH
I
IL
I
CC
Input HIGH Current
Input LOW Current
Power Supply Current
– 0.65
Min
2.0
0.8
– 1.5
250
0.4
0.5
3.0
20
0.1
– 0.4
13
Typ
Max
Unit
V
V
V
µA
V
V
V
µA
mA
mA
mA
Test Conditions
Guaranteed Input HIGH Voltage for
All Inputs
Guaranteed Input LOW Voltage for
All Inputs
V
CC
= MIN, I
IN
= – 18 mA
V
CC
= MIN, V
OH
= MAX
I
OL
= 12 mA
I
OL
= 24 mA
I
OL
= 80 mA
V
CC
= V
CC
MIN,
V
IN
= V
IL
or V
IH
per Truth T bl
T h Table
V
CC
= MAX, V
IN
= 2.7 V
V
CC
= MAX, V
IN
= 7.0 V
V
CC
= MAX, V
IN
= 0.4 V
V
CC
= MAX, V
IN
= GND
AC CHARACTERISTICS
(T
A
= 25°C)
Limits
Symbol
t
PHL
t
PLH
Propagation Delay
P
n
Input to Q
n
Output
Parameter
Min
Typ
Max
50
50
Unit
ns
Test Conditions
V
CC
= 5.0 V
C
L
= 45 pF
AC WAVEFORMS
V
IN
1.3 V
t
PHL
1.3 V
t
PLH
1.3 V
V
IN
1.3 V
t
PHL
1.3 V
t
PLH
1.3 V
V
OUT
1.3 V
V
OUT
1.3 V
Figure 1.
Figure 2.
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4
SN74LS145
PACKAGE DIMENSIONS
N SUFFIX
PLASTIC PACKAGE
CASE 648–08
ISSUE R
–A–
16
9
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.
DIM
A
B
C
D
F
G
H
J
K
L
M
S
INCHES
MIN
MAX
0.740
0.770
0.250
0.270
0.145
0.175
0.015
0.021
0.040
0.70
0.100 BSC
0.050 BSC
0.008
0.015
0.110
0.130
0.295
0.305
0
_
10
_
0.020
0.040
MILLIMETERS
MIN
MAX
18.80
19.55
6.35
6.85
3.69
4.44
0.39
0.53
1.02
1.77
2.54 BSC
1.27 BSC
0.21
0.38
2.80
3.30
7.50
7.74
0
_
10
_
0.51
1.01
B
1
8
F
S
C
L
–T–
H
G
D
16 PL
SEATING
PLANE
K
J
T A
M
M
0.25 (0.010)
M
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