MC74LCX573
Low-Voltage CMOS
Octal Transparent Latch
Flow Through Pinout
With 5 V-Tolerant Inputs and Outputs
(3-State, Non-Inverting)
The MC74LCX573 is a high performance, non-inverting octal
transparent latch operating from a 2.3 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
MC74LCX573 inputs to be safely driven from 5.0 V devices.
The MC74LCX573 contains 8 D-type latches with 3-state standard
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. The LCX573 flow through design facilitates easy PC
board layout.
Features
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MARKING
DIAGRAMS
20
LCX573
AWLYYWWG
SOIC-20
DW SUFFIX
CASE 751D
1
TSSOP-20
DT SUFFIX
CASE 948E
LCX
573
ALYWG
G
•
•
•
•
•
•
•
•
Designed for 2.3 to 3.6 V V
CC
Operation
5.0 V Tolerant - Interface Capability With 5.0 V TTL Logic
Supports Live Insertion and Withdrawal
I
OFF
Specification Guarantees High Impedance When V
CC
= 0 V
LVTTL Compatible
LVCMOS Compatible
24 mA Balanced Output Sink and Source Capability
SOEIAJ-20
M SUFFIX
CASE 967
20
74LCX573
AWLYWWG
1
Near Zero Static Supply Current in All Three Logic States (10
mA)
Substantially Reduces System Power Requirements
•
Latchup Performance Exceeds 500 mA
•
ESD Performance:
Human Body Model >2000 V
Machine Model >200 V
•
Pb-Free Packages are Available
A
=
Assembly Location
L, WL
=
Wafer Lot
Y, YY
=
Year
W, WW =
Work Week
G
= Pb-Free Package
G
= Pb-Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
©
Semiconductor Components Industries, LLC, 2008
1
March, 2008 - Rev. 8
Publication Order Number:
MC74LCX573/D
MC74LCX573
OE
LE
1
11
nLE
Q
D
18
Q
D
17
Q
D
16
Q
D
nLE
Q
D
14
Q
D
nLE
Q
D
12
Q
D
O7
13
O6
O5
15
O4
O3
O2
O1
19
O0
V
CC
20
O0
19
O1
18
O2
17
O3
16
O4
15
O5
14
O6
13
O7
12
LE
11
2
D0
3
D1
1
OE
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
GND
4
D2
nLE
nLE
Figure 1. Pinout
(Top View)
5
D3
nLE
PIN NAMES
PINS
OE
LE
D0-D7
O0-O7
FUNCTION
Output Enable Input
Latch Enable Input
Data Inputs
3-State Latch Outputs
D4
6
7
D5
nLE
8
D6
9
D7
nLE
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
MC74LCX573
MAXIMUM RATINGS
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
I
CC
I
GND
T
STG
Parameter
DC Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Source/Sink Current
DC Supply Current Per Supply Pin
DC Ground Current Per Ground Pin
Storage Temperature Range
Value
-0.5 to +7.0
-0.5
≤
V
I
≤
+7.0
-0.5
≤
V
O
≤
+7.0
-0.5
≤
V
O
≤
V
CC
+ 0.5
-50
-50
+50
±50
±100
±100
-65 to +150
Output in 3-State
Output in HIGH or LOW State (Note 1)
V
I
< GND
V
O
< GND
V
O
> V
CC
Condition
Unit
V
V
V
V
mA
mA
mA
mA
mA
mA
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. I
O
absolute maximum rating must be observed.
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
I
V
O
I
OH
Supply Voltage
Input Voltage
Output Voltage
HIGH Level Output Current
(HIGH or LOW State)
(3-State)
V
CC
= 3.0 V - 3.6 V
V
CC
= 2.7 V - 3.0 V
V
CC
= 2.3 V - 2.7 V
V
CC
= 3.0 V - 3.6 V
V
CC
= 2.7 V - 3.0 V
V
CC
= 2.3 V - 2.7 V
-55
0
Parameter
Operating
Data Retention Only
Min
2.0
1.5
0
0
0
Typ
2.5, 3.3
2.5, 3.3
Max
3.6
3.6
5.5
V
CC
5.5
-24
-12
-8
+ 24
+ 12
+8
+125
10
Unit
V
V
V
mA
I
OL
LOW Level Output Current
mA
T
A
Dt/DV
Operating Free-Air Temperature
Input Transition Rise or Fall Rate, V
IN
from 0.8 V to 2.0 V, V
CC
= 3.0 V
°C
ns/V
ORDERING INFORMATION
Device
MC74LCX573DW
MC74LCX573DWG
MC74LCX573DWR2
MC74LCX573DWR2G
MC74LCX573DT
MC74LCX573DTG
MC74LCX573DTR2
MC74LCX573DTR2G
MC74LCX573M
MC74LCX573MG
MC74LCX573MEL
Package
SOIC-20
SOIC-20
(Pb-Free)
SOIC-20
SOIC-20
(Pb-Free)
TSSOP-20*
TSSOP-20*
TSSOP-20*
TSSOP-20*
SOEIAJ-20
SOEIAJ-20
(Pb-Free)
SOEIAJ-20
Shipping
†
38 Units / Rail
38 Units / Rail
1000 Tape & Reel
1000 Tape & Reel
75 Units / Rail
75 Units / Rail
2000 Tape & Reel
2000 Tape & Reel
40 Units / Rail
40 Units / Rail
2000 Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb-Free.
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3
MC74LCX573
DC ELECTRICAL CHARACTERISTICS
T
A
= -40°C to +85°C
Symbol
V
IH
V
IL
V
OH
Characteristic
HIGH Level Input
Voltage (Note 2)
LOW Level Input
Voltage (Note 2)
HIGH Level Out‐
put Voltage
Condition
2.3 V
≤
V
CC
≤
2.7 V
2.7 V
≤
V
CC
≤
3.6 V
2.3 V
≤
V
CC
≤
2.7 V
2.7 V
≤
V
CC
≤
3.6 V
2.3 V
≤
V
CC
≤
3.6 V; I
OL
= 100
mA
V
CC
= 2.3 V; I
OH
= -8 mA
V
CC
= 2.7 V; I
OH
= -12 mA
V
CC
= 3.0 V; I
OH
= -18 mA
V
CC
= 3.0 V; I
OH
= -24 mA
V
OL
LOW Level Out‐
put Voltage
2.3 V
≤
V
CC
≤
3.6 V; I
OL
= 100
mA
V
CC
= 2.3 V; I
OL
= 8 mA
V
CC
= 2.7 V; I
OL
= 12 mA
V
CC
= 3.0 V; I
OL
= 16 mA
V
CC
= 3.0 V; I
OL
= 24 mA
I
I
I
OZ
I
OFF
I
CC
DI
CC
Input Leakage
Current
3-State Output
Current
Power-Off Leak‐
age Current
Quiescent Supply
Current
Increase in I
CC
per Input
2.3 V
≤
V
CC
≤
3.6 V; 0 V
≤
V
I
≤
5.5 V
2.3
≤
V
CC
≤
3.6 V; 0V
≤
V
O
≤
5.5 V;
V
I
= V
IH
or V
IL
V
CC
= 0 V; V
I
or V
O
= 5.5 V
2.3
≤
V
CC
≤
3.6 V; V
I
= GND or V
CC
2.3
≤
V
CC
≤
3.6 V; 3.6
≤
V
I
or V
O
≤
5.5 V
2.3
≤
V
CC
≤
3.6 V; V
IH
= V
CC
- 0.6 V
V
CC
- 0.2
1.8
2.2
2.4
2.2
0.2
0.6
0.4
0.4
0.55
±5
±5
10
10
±10
500
Min
1.7
2.0
0.7
0.8
V
CC
- 0.2
1.8
2.2
2.4
2.2
0.2
0.6
0.4
0.4
0.60
±5
±5
10
10
±10
500
mA
mA
mA
mA
mA
V
Max
T
A
= -55°C to +125°C
Min
1.7
2.0
0.7
0.8
V
V
Max
Unit
V
2. These values of V
I
are used to test DC electrical characteristics only.
AC CHARACTERISTICS
t
R
= t
F
= 2.5 ns; R
L
= 500
W
Limits
T
A
= -55°C to +125°C
V
CC
= 3.3 V
±
0.3 V
C
L
= 50 pF
Symbol
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
s
t
h
t
w
t
OSHL
t
OSLH
Parameter
Propagation Delay
D
n
to O
n
Propagation Delay
LE to O
n
Output Enable Time to HIGH
and LOW Level
Output Disable Time From
High and Low Level
Setup TIme, HIGH or LOW
D
n
to LE
Hold TIme, HIGH or LOW
D
n
to LE
LE Pulse Width, HIGH
Output-to-Output Skew
(Note 3)
Waveform
1
3
2
2
3
3
3
Min
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2.5
1.5
3.3
1.0
1.0
Max
8.0
8.0
8.5
8.5
8.5
8.5
6.5
6.5
V
CC
= 2.7 V
C
L
= 50 pF
Min
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2.5
1.5
3.3
Max
9.0
9.0
9.5
9.5
9.5
9.5
7.0
7.0
V
CC
= 2.5 V
±
0.2 V
C
L
= 30 pF
Min
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
4.0
2.0
4.0
ns
Max
9.6
9.6
10.5
10.5
10.5
10.5
7.8
7.8
Unit
ns
ns
ns
ns
3. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (t
OSHL
) or LOW-to-HIGH (t
OSLH
); parameter
guaranteed by design.
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MC74LCX573
DYNAMIC SWITCHING CHARACTERISTICS
T
A
= +25°C
Symbol
V
OLP
V
OLV
Characteristic
Dynamic LOW Peak Voltage
(Note 4)
Dynamic LOW Valley Voltage
(Note 4)
Condition
V
CC
= 3.3 V, C
L
= 50 pF, V
IH
= 3.3 V, V
IL
= 0 V
V
CC
= 2.5 V, C
L
= 30 pF, V
IH
= 2.5 V, V
IL
= 0 V
V
CC
= 3.3 V, C
L
= 50 pF, V
IH
= 3.3 V, V
IL
= 0 V
V
CC
= 2.5 V, C
L
= 30 pF, V
IH
= 2.5 V, V
IL
= 0 V
Min
Typ
0.8
0.6
-0.8
-0.6
Max
Unit
V
V
V
V
4. Number of outputs defined as “n”. Measured with “n-1” outputs switching from HIGH-to-LOW or LOW-to-HIGH. The remaining output is
measured in the LOW state.
CAPACITIVE CHARACTERISTICS
Symbol
C
IN
C
I/O
C
PD
Parameter
Input Capacitance
Input/Output Capacitance
Power Dissipation Capacitance
Condition
V
CC
= 3.3 V, V
I
= 0 V or V
CC
V
CC
= 3.3 V, V
I
= 0 V or V
CC
10 MHz, V
CC
= 3.3 V, V
I
= 0 V or V
CC
Typical
7
8
25
Unit
pF
pF
pF
OE
Vmi
V
CC
Dn
Vmi
t
PLH
Vmo
Vmi
0V
t
PHL
V
OH
On
Vmo
V
OL
On
WAVEFORM 1 - PROPAGATION DELAYS
t
R
= t
F
= 2.5 ns, 10% to 90%; f = 1 MHz; t
W
= 500 ns
t
PZL
Vmo
t
PLZ
On
Vmo
t
PZH
t
PHZ
Vmi
V
CC
0V
V
OH
V
HZ
V
LZ
V
OL
WAVEFORM 2 - OUTPUT ENABLE AND DISABLE TIMES
t
R
= t
F
= 2.5 ns, 10% to 90%; f = 1 MHz; t
W
= 500 ns
2.7 V
Dn
1.5 V
0V
t
s
LE
1.5 V
t
w
1.5 V
0V
t
PLH
, t
PHL
V
OH
On
1.5 V
V
OL
t
h
2.7 V
Symbol
Vmi
Vmo
V
HZ
V
LZ
3.3 V
+
0.3 V
1.5 V
1.5 V
V
OL
+ 0.3 V
V
OL
- 0.3 V
V
CC
2.7 V
1.5 V
1.5 V
V
OL
+ 0.3 V
V
OL
- 0.3 V
2.5 V
+
0.2 V
V
CC
/2
V
CC
/2
V
OL
+ 0.15 V
V
OL
- 0.15 V
WAVEFORM 3 - LE to On PROPAGATION DELAYS, LE MINIMUM
PULSE WIDTH, Dn to LE SETUP AND HOLD TIMES
t
R
= t
F
= 2.5 ns, 10% to 90%; f = 1 MHz; t
W
= 500 ns except when noted
Figure 3. AC Waveforms
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