SN54/74LS145
1-OF-10 DECODER/DRIVER
OPEN-COLLECTOR
The SN54 / 74LS145, 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 54 / 74145
• Input Clamp Diodes Limit High Speed Termination Effects
1-OF-10 DECODER / DRIVER
OPEN-COLLECTOR
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
CASE 620-09
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC
P0
P1
P2
P3
Q9
Q8
Q7
16
15
14
13
12
11
10
9
16
1
N SUFFIX
PLASTIC
CASE 648-08
16
1
2
3
4
5
6
7
8
Q0
Q1
Q2
Q3
Q4
Q5
Q6
GND
PIN NAMES
1
HIGH
P0, P1, P2, P3
Q0 to Q9
D SUFFIX
SOIC
CASE 751B-03
LOADING (Note a)
LOW
0.5 U.L.
Open Collector
BCD Inputs
Outputs (Note b)
16
0.25 U.L.
15 (7.5) U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 15 U.L. for Commercial (74)
Temperature Ranges.
1
ORDERING INFORMATION
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXD
Ceramic
Plastic
SOIC
INPUTS
LOGIC DIAGRAM
P0
P1
P2
P3
LOGIC SYMBOL
15 14 13 12
INPUT
INVERTERS
0
0
1
1
2
2
3
P0 P1 P2 P3
3
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9
1 2 3 4 5 6
7 9 10 11
DECODE/DRIVER
GATES
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
OUTPUTS
FAST AND LS TTL DATA
5-1
VCC = PIN 16
GND = PIN 8
