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54LS173 View Datasheet(PDF) - Motorola => Freescale

Part NameDescriptionManufacturer
54LS173 4-BIT D-TYPE REGISTER WITH 3-STATE OUTPUTS Motorola
Motorola => Freescale Motorola
54LS173 Datasheet PDF : 6 Pages
1 2 3 4 5 6
LOGIC DIAGRAM
IE1
9
IE2
10
SN54 / 74LS173A
D0
14
D1
13
D2
12
D3
11
CP
7
MR
15
OE1 1
OE2 2
VCC = PIN 16
GND = PIN 8
= PIN NUMBERS
CP D
Q
Q
3
Q0
D
4
Q1
D
D
5
Q2
6
Q3
TRUTH TABLE
MR
CP
IE1
IE2
Dn
Qn
H
x
x
x
x
L
L
L
x
x
x
Qn
L
H
x
x
Qn
L
x
H
x
Qn
L
L
L
L
L
L
L
L
H
H
When either OE1, or OE2 are HIGH, the output is in the off state (High Impedance);
however this does not affect the contents or sequential operation of the register.
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA
Operating Ambient Temperature Range
IOH
Output Current — High
IOL
Output Current — Low
Min
Typ
Max
Unit
54
4.5
5.0
5.5
V
74
4.75
5.0
5.25
54
– 55
25
125
°C
74
0
25
70
54
– 1.0
mA
74
– 2.6
54
12
mA
74
24
FAST AND LS TTL DATA
5-317
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