MOTOROLA SN74LS145D, SN74LS145DR2, SN74LS145M, SN74LS145MEL, SN74LS145ML1 Datasheet
...
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
T emperature 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
P0, P1, P2, P
3
Q0 – 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
0P1P2P3
Q0Q1Q2Q3Q4Q6Q7Q8Q
9
Q
5
123456791011
14 13 12 11 10 9
123456
7
16 15
8
V
CC
Q
0
P0P1P2P
3
Q
8
Q
9
Q
7
Q1Q2Q3Q4Q5Q6GND
SN74LS145
http://onsemi.com
3
LOGIC DIAGRAM
INPUTS
INPUT
INVERTERS
DECODE/DRIVER
GATES
OUTPUTS
P
0
P
1
P
2
P
3
01230 1 2 3
Q0Q1Q2Q3Q4Q5Q6Q7Q8Q
9
TRUTH TABLE
INPUTS OUTPUTS
P3P2P1P0Q0Q1Q2Q3Q4Q5Q6Q7Q8Q
9
L L L L L H H H H H H H H H
L LLHHLHHHHHHHH
L LHLHHLHHHHHHH
L LHHHHHLHHHHHH
L HLLHHHHLHHHHH
L HLHHHHHHLHHHH
L HHLHHHHHHLHHH
L HHHHHHHHHHLHH
H LLLHHHHHHHHLH
H LLHHHHHHHHHHL
H LHLHHHHHHHHHH
H LHHHHHHHHHHHH
H HLLHHHHHHHHHH
H HLHHHHHHHHHHH
H HHLHHHHHHHHHH
H HHHHHHHHHHHHH
H = HIGH Voltage Level
L = LOW Voltage Level
Loading...