74LVC573A
Low-Voltage CMOS Octal
Transparent Latch
With 5 V−Tolerant Inputs and Outputs
(3−State, Non−Inverting)
The 74LVC573A is a high performance, non−inverting octal
transparent latch operating from a 1.2 to 3.6 V supply. High impedance
TTL compatible inputs significantly reduce current loading to input
drivers while TTL compatible outputs offer improved switching noise
performance. A V
I
specification of 5.5 V allows 74LVC573A inputs
to be safely driven from 5 V devices.
The 74LVC573A contains 8 D−type latches with 3−state outputs.
When the Latch Enable (LE) input is HIGH, data on the Dn inputs
enters the latches. In this condition, the latches are transparent, i.e., a
latch output will change state each time its D input changes. When LE
is LOW, the latches store the information that was present on the D
inputs a setup time preceding the HIGH−to−LOW transition of LE.
The 3−state standard outputs are controlled by the Output Enable (OE)
input. When OE is LOW, the standard outputs are enabled. When OE
is HIGH, the standard outputs are in the high impedance state, but this
does not interfere with new data entering into the latches.
Features
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MARKING
DIAGRAM
20
20
1
TSSOP−20
DT SUFFIX
CASE 948E
1
A
L, WL
Y, YY
W, WW
G or
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
LCX
573A
ALYWG
G
(Note: Microdot may be in either location)
•
•
•
•
•
•
Designed for 1.2 to 3.6 V V
CC
Operation
5 V Tolerant − Interface Capability With 5 V TTL Logic
Supports Live Insertion and Withdrawal
I
OFF
Specification Guarantees High Impedance When V
CC
= 0 V
24 mA Output Sink and Source Capability
Near Zero Static Supply Current in all Three Logic States (10
mA)
Substantially Reduces System Power Requirements
•
ESD Performance:
♦
Human Body Model >2000 V
♦
Machine Model >200 V
•
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
ORDERING INFORMATION
See detailed ordering and shipping information on page 8 of
this data sheet.
©
Semiconductor Components Industries, LLC, 2015
1
September, 2015 − Rev. 1
Publication Order Number:
74LVC373A/D
74LVC573A
OE
LE
1
11
LE
Q
D
18
Q
D
17
Q
D
16
Q
D
LE
Q
D
14
Q
D
LE
Q
D
12
Q
D
O7
13
O6
O5
15
O4
O3
O2
O1
19
O0
2
V
CC
20
O0
19
O1
18
O2
17
O3
16
O4
15
O5
14
O6
13
O7
12
LE
11
3
D1
D0
LE
4
D2
1
OE
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
GND
5
D3
LE
LE
Figure 1. Pinout
(Top View)
PIN NAMES
Pins
OE
LE
D0−D7
O0−O7
Function
Output Enable Input
Latch Enable Input
Data Inputs
3−State Latch Outputs
6
D4
7
D5
LE
8
D6
9
D7
LE
Figure 2. Logic Diagram
TRUTH TABLE
Inputs
OE
L
L
L
L
L
H
H
H
H
H
LE
H
H
L
L
L
L
H
H
L
L
Dn
H
L
h
l
X
X
H
L
h
l
Outputs
On
H
L
H
L
NC
Z
Z
Z
Z
Z
Operating Mode
Transparent (Latch Disabled); Read Latch
Latched (Latch Enabled) Read Latch
Hold; Read Latch
Hold; Disabled Outputs
Transparent (Latch Disabled); Disabled Outputs
Latched (Latch Enabled); Disabled Outputs
H
= High Voltage Level
h
= High Voltage Level One Setup Time Prior to the Latch Enable High−to−Low Transition
L
= Low Voltage Level
l
= Low Voltage Level One Setup Time Prior to the Latch Enable High−to−Low Transition
NC = No Change, State Prior to the Latch Enable High−to−Low Transition
X
= High or Low Voltage Level or Transitions are Acceptable
Z
= High Impedance State
For I
CC
Reasons DO NOT FLOAT Inputs
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2
74LVC573A
MAXIMUM RATINGS
Symbol
V
CC
V
I
V
O
Parameter
DC Supply Voltage
DC Input Voltage
DC Output Voltage
Output in 3−State
Output in HIGH or LOW State
(Note 1)
I
IK
I
OK
DC Input Diode Current
DC Output Diode Current
V
I
< GND
V
O
< GND
V
O
> V
CC
I
O
I
CC
I
GND
T
STG
T
L
DC Output Source/Sink Current
DC Supply Current Per Supply Pin
DC Ground Current Per Ground Pin
Storage Temperature Range
Lead Temperature, 1 mm from Case for
10 Seconds
Junction Temperature Under Bias
Thermal Resistance (Note 2)
Moisture Sensitivity
Level 1
Condition
Value
−0.5 to +6.5
−0.5
≤
V
I
≤
+6.5
−0.5
≤
V
O
≤
+6.5
−0.5
≤
V
O
≤
V
CC
+ 0.5
−50
−50
+50
±50
±100
±100
−65 to +150
T
L
= 260
Unit
V
V
V
V
mA
mA
mA
mA
mA
mA
°C
°C
°C
°C/W
T
J
qJA
MSL
T
J
= 135
110.7
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. I
O
absolute maximum rating must be observed.
2. Measured with minimum pad spacing on an FR4 board, using 10 mm−by−1 inch, 2 ounce copper trace no air flow.
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
Parameter
Supply Voltage Operating Functional
Min
1.65
1.2
0
0
0
Typ
Max
3.6
3.6
5.5
V
CC
5.5
mA
−24
−12
mA
24
12
−40
0
0
+125
20
10
°C
ns/V
V
V
Unit
V
V
I
V
O
Input Voltage
Output Voltage
HIGH or LOW State
3−State
HIGH Level Output Current
V
CC
= 3.0 V − 3.6 V V
CC
= 2.7 V − 3.0 V
LOW Level Output Current
V
CC
= 3.0 V − 3.6 V V
CC
= 2.7 V − 3.0 V
Operating Free−Air Temperature
Input Transition Rise or Fall Rate,
V
CC
= 1.65 to 2.7 V
V
CC
= 2.7 to 3.6 V
I
OH
I
OL
T
A
Dt/DV
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
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3
74LVC573A
DC ELECTRICAL CHARACTERISTICS
−40 to +855C
Typ
(Note 3)
−
−
−
−
−
−
−
−
−40 to +1255C
Typ
(Note 3)
−
−
−
−
−
−
−
−
Symbol
V
IH
Parameter
HIGH−level input voltage
Conditions
V
CC
= 1.2 V
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
Min
1.08
0.65 x
V
CC
1.7
2.0
−
−
−
−
Max
−
−
−
−
0.12
0.35 x
V
CC
0.7
0.8
Min
1.08
0.65 x
V
CC
1.7
2.0
−
−
−
−
Max
−
−
−
−
0.12
0.35 x
V
CC
0.7
0.8
Unit
V
V
IL
LOW−level input voltage
V
CC
= 1.2 V
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
V
V
OH
HIGH−level output voltage
V
I
= V
IH
or V
IL
I
O
= −100
mA;
V
CC
= 1.65 V to 3.6 V
I
O
= −4 mA; V
CC
= 1.65 V
I
O
= −8 mA; V
CC
= 2.3 V
I
O
= −12 mA; V
CC
= 2.7 V
I
O
= −18 mA; V
CC
= 3.0 V
I
O
= −24 mA; V
CC
= 3.0 V
V
CC
−
0.2
1.2
1.8
2.2
2.4
2.2
−
−
−
−
−
−
−
−
−
−
−
−
V
CC
−
0.3
1.05
1.65
2.05
2.25
2.0
−
−
−
−
−
−
−
−
−
−
−
−
V
V
OL
LOW−level output voltage
V
I
= V
IH
or V
IL
I
O
= 100
mA;
V
CC
= 1.65 V to 3.6 V
I
O
= 4 mA; V
CC
= 1.65 V
I
O
= 8 mA; V
CC
= 2.3 V
I
O
= 12 mA; V
CC
= 2.7 V
I
O
= 24 mA; V
CC
= 3.0 V
−
−
−
−
−
−
−
−
−
−
−
−
±0.1
±0.1
0.2
0.45
0.6
0.4
0.55
±5
±5
−
−
−
−
−
−
−
−
−
−
−
−
±0.1
±0.1
0.3
0.65
0.8
0.6
0.8
±20
±20
V
I
I
I
OZ
Input leakage current
OFF−state output current
V
I
= 5.5 V or GND;
V
CC
= 3.6 V
VI = VIH or VIL;
V
O
= 5.5 V or GND;
V
CC
= 3.6 V
V
I
or V
O
= 5.5 V; V
CC
= 0.0 V
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 3.6 V
per input pin;
V
I
= V
CC
− 0.6 V; I
O
= 0 A;
V
CC
= 2.7 V to 3.6 V
mA
mA
I
OFF
I
CC
DI
CC
Power−off leakage current
Supply current
Additional supply current
−
−
−
±0.1
0.1
5
±10
10
500
−
−
−
±0.1
0.1
5
±20
40
5000
mA
mA
mA
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
3. All typical values are measured at T
A
= 25°C and V
CC
= 3.3 V, unless stated otherwise.
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74LVC573A
AC ELECTRICAL CHARACTERISTICS
(t
R
= t
F
= 2.5 ns)
−40 to +855C
Min
−
2.1
1.5
1.5
1.5
−
2.0
1.5
1.5
1.5
−
1.7
1.5
1.5
1.5
−
1.0
0.3
1.5
1.5
5.0
4.0
3.2
3.2
4.0
2.5
1.7
1.7
3.0
1.9
1.5
1.4
−
Typ
(Note 4)
16.0
7.8
4.1
4.1
3.4
16.0
7.7
4.1
3.7
3.4
18.0
7.5
4.2
4.2
3.4
8.0
3.3
1.8
3.0
2.5
−
−
−
1.6
−
−
−
−
−
−
−
−
−
Max
−
16.3
8.0
7.2
6.2
−
16.0
7.8
7.5
6.5
−
17.5
9.2
8.5
7.5
−
10.1
5.7
6.5
6.0
−
−
−
−
−
−
−
−
−
−
−
−
1.0
−40 to +1255C
Min
−
2.1
1.5
1.5
1.5
−
2.0
1.5
1.5
1.5
−
1.7
1.5
1.5
1.5
−
1.0
0.3
1.5
1.5
5.0
4.0
3.2
3.2
4.0
2.5
1.7
1.7
3.0
1.9
1.5
1.4
−
Typ
(Note 4)
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
Max
−
18.8
9.2
9.0
8.0
−
18.4
9.1
9.5
8.5
−
20.2
10.6
11.0
9.5
−
11.6
6.6
8.5
7.5
−
−
−
−
−
−
−
−
−
−
−
−
1.5
ns
ns
ns
ns
ns
ns
ns
ns
Symbol
t
pd
Parameter
Propagation Delay (Note 5)
Dn to On
Conditions
V
CC
= 1.2 V
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V
V
CC
= 3.0 V to 3.6 V
Unit
t
pd
Propagation Delay
LE to On
V
CC
= 1.2 V
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V
V
CC
= 3.0 V to 3.6 V
t
en
Enable Time (Note 6)
OE to On
V
CC
= 1.2 V
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V
V
CC
= 3.0 V to 3.6 V
t
dis
Disable Time (Note 7)
OE to On
V
CC
= 1.2 V
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V
V
CC
= 3.0 V to 3.6 V
t
w
Pulse Width
LE HIGH
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V
V
CC
= 3.0 V to 3.6 V
t
su
Set−up Time
Dn to LE
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V
V
CC
= 3.0 V to 3.6 V
t
h
Hold Time
Dn to LE
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V
V
CC
= 3.0 V to 3.6 V
t
sk(0)
Output Skew Time (Note 8)
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
4. Typical values are measured at T
A
= 25°C and V
CC
= 3.3 V, unless stated otherwise.
5. t
pd
is the same as t
PLH
and t
PHL
.
6. t
en
is the same as t
PZL
and t
PZH
.
7. t
dis
is the same as t
PLZ
and t
PHZ
.
8. Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
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