74LCX574_08 概述
74LCX574
74LCX574_08 数据手册
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PDF下载February 2008
74LCX574
Low Voltage Octal D-Type Flip-Flop
with 5V Tolerant Inputs and Outputs
Features
General Description
■ 5V tolerant inputs and outputs
The LCX574 is a high-speed, low power octal flip-flop
with a buffered common Clock (CP) and a buffered
common Output Enable (OE). The information presented
to the D inputs is stored in the flip-flops on the LOW-to-
HIGH Clock (CP) transition.
■ 2.3V–3.6V V specifications provided
CC
■ 7.5ns t max. (V = 3.3V), 10µA I max.
PD
CC
CC
■ Power down high impedance inputs and outputs
(1)
■ Supports live insertion/withdrawal
The LCX574 is functionally identical to the LCX374
except for the pinouts.
■
24mA output drive (V = 3.0V)
CC
■ Implements proprietary noise/EMI reduction circuitry
■ Latch-up performance exceeds JEDEC 78 conditions
■ ESD performance
The LCX574 is designed for low voltage applications
with capability of interfacing to a 5V signal environment.
The LCX574 is fabricated with an advanced CMOS
technology to achieve high speed operation while main-
taining CMOS low power dissipation.
– Human body model > 2000V
– Machine model > 200V
Note:
1. To ensure the high impedance state during power up
or down, OE should be tied to V through a pull-up
CC
resistor: the minimum value of the resistor is
determined by the current-sourcing capability of the
driver.
Ordering Information
Order
Number
Package
Number
Package Description
74LCX574WM
74LCX574SJ
74LCX574BQX
M20B
M20D
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
(2)
MLP20B 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC
MO-241, 2.5 x 4.5mm
74LCX574MSA
74LCX574MTC
MSA20
MTC20
20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
Note:
2. DQFN package available in Tape and Reel only.
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
Connection Diagrams
Logic Symbol
Pin Assignments for
SOIC, SOP, SSOP, TSSOP
D0 D1 D2 D3 D4 D5 D6 D7
CP
OE
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCC
O0
O1
O2
O3
O4
O5
O6
O7
OE
D0
D1
O0 O1 O2 O3 O4 O5 O6 O7
D2
D3
D4
D5
Truth Table
D6
D7
GND
Inputs
Internal Outputs
OE CP
D
L
Q
NC
NC
H
On
Z
Function
CP
H
H
H
H
L
H
H
Hold
Hold
H
L
Z
Pad Assignments for DQFN
Z
Load
VCC
20
OE
1
H
L
L
Z
Load
H
L
Data Available
Data Available
No Change in Data
No Change in Data
19
18
17
16
15
14
13
12
D0
D1
D2
D3
D4
D5
D6
D7
2
3
4
5
6
7
8
9
O0
O1
O2
O3
O4
O5
O6
O7
L
H
L
L
H
L
H
H
NC
NC
NC
NC
L
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
= LOW-to-HIGH Transition
NC = No Change
10
11
Functional Description
GND CP
The LCX574 consists of eight edge-triggered flip-flops
with individual D-type inputs and 3-STATE true outputs.
The buffered clock and buffered Output Enable are com-
mon to all flip-flops. The eight flip-flops will store the
state of their individual D inputs that meet the setup and
hold time requirements on the LOW-to-HIGH Clock (CP)
transition. With the Output Enable (OE) LOW, the con-
tents of the eight flip-flops are available at the outputs.
When OE is HIGH, the outputs go to the high impedance
state. Operation of the OE input does not affect the load-
ing of the flip-flops.
(Top View)
Pin Descriptions
Pin Names
Description
D –D
Data Inputs
0
7
CP
OE
Clock Pulse Input
3-STATE Output Enable Input
3-STATE Outputs
O –O
0
7
Logic Diagram
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
CP
C
Q
D
C
Q
D
C
Q
D
C
Q
D
C
Q
D
C
Q
D
C
Q
D
C
Q
D
OE
O
O
O
O
O
O
O
O
7
0
1
2
3
4
5
6
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate
propagation delays.
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
2
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Conditions
Value
Units
V
Supply Voltage
–0.5 to +7.0
–0.5 to +7.0
–0.5 to +7.0
V
V
V
CC
V
DC Input Voltage
I
V
DC Output Voltage
Output in 3-STATE
Output in HIGH or LOW State
V < GND
O
(3)
–0.5 to V + 0.5
CC
I
DC Input Diode Current
DC Output Diode Current
–50
–50
mA
mA
IK
I
I
I
V < GND
O
OK
V
> V
+50
O
CC
I
DC Output Source/Sink Current
DC Supply Current per Supply Pin
DC Ground Current per Ground Pin
Storage Temperature
±50
mA
mA
mA
°C
O
±100
CC
I
±100
GND
T
–65 to +150
STG
(4)
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol
Parameter
Conditions
Min.
2.0
1.5
0
Max.
3.6
Units
V
Supply Voltage
Operating
V
CC
Data Retention
3.6
V
Input Voltage
5.5
V
V
I
V
Output Voltage
HIGH or LOW State
3-STATE
0
V
CC
O
0
5.5
±24
±12
±8
I
/I
Output Current
V
V
V
= 3.0V–3.6V
= 2.7V–3.0V
= 2.3V–2.7V
mA
OH OL
CC
CC
CC
T
Free-Air Operating Temperature
Input Edge Rate
–40
0
85
°C
A
∆t/∆V
V
= 0.8V–2.0V, V = 3.0V
10
ns/V
IN
CC
Notes:
3. I Absolute Maximum Rating must be observed.
O
4. Unused inputs must be held HIGH or LOW. They may not float.
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
3
DC Electrical Characteristics
T = –40°C to +85°C
A
Symbol
Parameter
V
(V)
Conditions
Min.
1.7
Max.
Units
CC
V
HIGH Level Input Voltage
2.3–2.7
2.7–3.6
2.3–2.7
2.7–3.6
2.3–3.6
2.3
V
IH
2.0
V
LOW Level Input Voltage
HIGH Level Output Voltage
0.7
0.8
V
V
IL
V
I
I
I
I
I
I
I
I
I
I
= –100µA
= –8mA
= –12mA
= –18mA
= –24mA
= 100µA
= 8mA
V
– 0.2
CC
OH
OH
OH
OH
OH
OH
OL
OL
OL
OL
OL
1.8
2.2
2.4
2.2
2.7
3.0
V
LOW Level Output Voltage
2.3–3.6
2.3
0.2
0.6
V
OL
2.7
= 12mA
= 16mA
= 24mA
0.4
3.0
0.4
0.55
±5.0
±5.0
I
Input Leakage Current
2.3–3.6
2.3–3.6
0 ≤ V ≤ 5.5V
µA
µA
I
I
I
3-STATE Output Leakage
0 ≤ V ≤ 5.5V,
O
OZ
V = V or V
I
IH
IL
I
Power-Off Leakage Current
Quiescent Supply Current
0
V or V = 5.5V
10
10
µA
µA
OFF
I
O
I
2.3–3.6
2.3–3.6
2.3–3.6
V = V or GND
I CC
CC
(5)
3.6V ≤ V , V ≤ 5.5V
±10
500
I
O
∆I
Increase in I per Input
V
= V –0.6V
µA
CC
CC
IH
CC
AC Electrical Characteristics
T = –40°C to +85°C, R = 500Ω
A
L
V
= 3.3V ± 0.3V,
V
= 2.7V,
V = 2.5 ± 0.2V,
CC
CC
CC
C = 50pF
C = 50pF
C = 30pF
L
L
L
Symbol
Parameter
Maximum Clock Frequency
Propagation Delay,
Min.
150
1.5
Max.
Min.
Max.
Min.
Max.
Units
MHz
ns
f
MAX
t
, t
8.5
1.5
9.5
1.5
10.5
PHL PLH
CP to O
n
t
t
, t
Output Enable Time
Output Disable Time
Setup Time
1.5
1.5
2.5
1.5
3.3
8.5
6.5
1.5
1.5
2.5
1.5
3.3
9.5
7.0
1.5
1.5
4.0
2.0
4.0
10.5
7.8
ns
ns
ns
ns
ns
ns
PZL PZH
, t
PLZ PHZ
t
S
H
t
Hold Time
t
Pulse Width
W
(6)
t
, t
Output to Output Skew
1.0
OSHL OSLH
Notes:
5. Outputs disabled or 3-STATE only.
6. 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 ) or LOW-to-HIGH (t ).
OSHL
OSLH
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
4
Dynamic Switching Characteristics
T = 25°C
A
Symbol
Parameter
V
(V)
Conditions
Typical
0.8
Units
CC
V
Quiet Output Dynamic Peak V
3.3
C = 50pF, V = 3.3V, V = 0V
V
OLP
OL
L
IH
IL
2.5
3.3
2.5
C = 30pF, V = 2.5V, V = 0V
0.6
L
IH
IL
V
Quiet Output Dynamic Valley V
C = 50pF, V = 3.3V, V = 0V
–0.8
–0.6
V
OLV
OL
L
IH
IL
C = 30pF, V = 2.5V, V = 0V
L
IH
IL
Capacitance
Symbol
Parameter
Conditions
Typical
Units
C
Input Capacitance
Output Capacitance
Power Dissipation Capacitance
V
V
V
= Open, V = 0V or V
CC
7
8
pF
pF
pF
IN
CC
CC
CC
I
C
= 3.3V, V = 0V or V
I CC
OUT
C
= 3.3V, V = 0V or V , f = 10MHz
25
PD
I
CC
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
5
AC Loading and Waveforms (Generic for LCX Family)
V
CC
OPEN
GND
t
t
t
, t
PLH PHL
500Ω
TEST
, t
PZH PHZ
DUT
SIGNAL
V
, t
PZL PLZ
I
C
L
500Ω
Figure 1. AC Test Circuit (C includes probe and jig capacitance)
L
Test
Switch
t
, t
Open
PLH PHL
t
, t
6V at V = 3.3 ± 0.3V
CC
PZL PLZ
V
x 2 at V = 2.5 ± 0.2V
CC
CC
t
, t
GND
PZH PHZ
V
V
CC
CC
OUTPUT
CONTROL
DATA
IN
V
mi
V
mi
GND
GND
t
t
t
t
PHZ
pxx
pxx
PZH
V
V
OH
Y
DATA
OUT
DATA
OUT
V
V
mo
mo
3-STATE Output High Enable and
Disable Times for Logic
Waveform for Inverting and
Non-Inverting Functions
t
W
V
CC
DATA
V
V
CC
mi
CONTROL
IN
IN
V
mi
GND
GND
t
S
t
H
t
rec
V
CC
CONTROL
INPUT
V
mi
V
CLOCK
GND
mi
t
S
t
PHL
t
rec
t
PLH
MR
OR
CLEAR
V
mi
V
mo
OUTPUT
V
mo
Setup Time, Hold Time and
Recovery Time for Logic
Propagation Delay, Pulse Width and
Waveforms
t
rec
t
t
f
r
V
CC
OUTPUT
V
mi
CONTROL
GND
t
t
PLZ
PZL
V
V
OH
OL
90%
90%
10%
ANY
OUTPUT
DATA
OUT
V
mo
V
X
10%
V
OL
3-STATE Output Low Enable and
Disable Times for Logic
t
and t
fall
rise
Figure 2. Waveforms (Input Characteristics; f =1MHz, t = t = 3ns)
r
f
V
CC
Symbol
3.3V ± 0.3V
1.5V
2.7V
1.5V
1.5V
2.5V ± 0.2V
V
V
V
/ 2
/ 2
mi
CC
CC
V
1.5V
mo
V
V
+ 0.3V
– 0.3V
V
+ 0.3V
V
+ 0.15V
– 0.15V
x
y
OL
OL
OL
V
V
V
– 0.3V
V
OH
OH
OH
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
6
Schematic Diagram (Generic for LCX Family)
Input Stage
P2
P1
V
CC
Data
ESD
P5
X1
D2 N+/P–
V
DD
N1
N2
P4
GTO™
Output
Input Stage
D6
N+/P–
P3
N5
Enable
N4
ESD
D4 N+/P–
N3
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
7
Tape and Reel Specification
Tape Format for DQFN
Package
Designator
Tape
Section
Number
Cavities
Cavity
Status
Cover Tape
Status
BQX
Leader (Start End)
Carrier
125 (typ)
3000
Empty
Filled
Sealed
Sealed
Sealed
Trailer (Hub End)
75 (typ)
Empty
Tape Dimensions inches (millimeters)
Reel Dimensions inches (millimeters)
Tape Size
A
B
C
D
N
W1
W2
12mm
13.0 (330.0) 0.059 (1.50) 0.512 (13.00) 0.795 (20.20) 2.165 (55.00) 0.488 (12.4) 0.724 (18.4)
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
8
Physical Dimensions
13.00
12.60
A
11.43
20
11
B
9.50
10.65 7.60
10.00 7.40
2.25
1
PIN ONE
INDICATOR
10
0.65
0.51
0.35
1.27
1.27
M
0.25
C B A
LAND PATTERN RECOMMENDATION
SEE DETAIL A
2.65 MAX
0.33
0.20
C
0.10
C
0.30
0.10
SEATING PLANE
0.75
0.25
X 45°
NOTES: UNLESS OTHERWISE SPECIFIED
(R0.10)
(R0.10)
A) THIS PACKAGE CONFORMS TO JEDEC
MS-013, VARIATION AC, ISSUE E
GAGE PLANE
B) ALL DIMENSIONS ARE IN MILLIMETERS.
C) DIMENSIONS DO NOT INCLUDE MOLD
FLASH OR BURRS.
0.25
8°
0°
D) CONFORMS TO ASME Y14.5M-1994
1.27
0.40
SEATING PLANE
E) LANDPATTERN STANDARD: SOIC127P1030X265-20L
F) DRAWING FILENAME: MKT-M20BREV3
(1.40)
DETAIL A
SCALE: 2:1
Figure 3. 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
9
Physical Dimensions (Continued)
Figure 4. 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
10
Physical Dimensions (Continued)
Figure 5. 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC MO-241, 2.5 x 4.5mm
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
11
Physical Dimensions (Continued)
Figure 6. 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
12
Physical Dimensions (Continued)
Figure 7. 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
13
TRADEMARKS
The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global
subsidiaries, and is not intended to be an exhaustive list of all such trademarks.
ACEx®
PDP-SPM™
SupreMOS™
FPS™
Power220®
SyncFET™
Build it Now™
CorePLUS™
CROSSVOLT™
CTL™
Current Transfer Logic™
EcoSPARK®
EZSWITCH™ *
™
FRFET®
POWEREDGE®
Power-SPM™
PowerTrench®
Programmable Active Droop™
QFET®
®
Global Power ResourceSM
Green FPS™
Green FPS™e-Series™
GTO™
i-Lo™
IntelliMAX™
ISOPLANAR™
MegaBuck™
MICROCOUPLER™
MicroFET™
The Power Franchise®
TinyBoost™
TinyBuck™
TinyLogic®
TINYOPTO™
TinyPower™
TinyPWM™
TinyWire™
µSerDes™
UHC®
QS™
QT Optoelectronics™
Quiet Series™
RapidConfigure™
SMART START™
SPM®
STEALTH™
SuperFET™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
®
Fairchild®
Fairchild Semiconductor®
FACT Quiet Series™
FACT®
MicroPak™
MillerDrive™
Motion-SPM™
OPTOLOGIC®
FAST®
Ultra FRFET™
UniFET™
VCX™
OPTOPLANAR®
FastvCore™
®
FlashWriter® *
* EZSWITCH™ and FlashWriter® are trademarks of System General Corporation, used under license by Fairchild Semiconductor.
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS
HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE
APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS
PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S
WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR
SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems 2. A critical component in any component of a life support,
which, (a) are intended for surgical implant into the body or
(b) support or sustain life, and (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in a significant injury of the user.
device, or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification
Product Status
Definition
This datasheet contains the design specifications for product
development. Specifications may change in any manner without notice.
Advance Information
Formative or In Design
This datasheet contains preliminary data; supplementary data will be
published at a later date. Fairchild Semiconductor reserves the right to
make changes at any time without notice to improve design.
Preliminary
First Production
Full Production
Not In Production
This datasheet contains final specifications. Fairchild Semiconductor
reserves the right to make changes at any time without notice to improve
the design.
No Identification Needed
Obsolete
This datasheet contains specifications on a product that has been
discontinued by Fairchild Semiconductor. The datasheet is printed for
reference information only.
Rev. I33
©2006 Fairchild Semiconductor Corporation
74LCX574 Rev. 1.6.0
www.fairchildsemi.com
14
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