74LCX821MTCX [ONSEMI]
带 5V 耐受输入和输出的低压 10 位 D 型触发器;
| 型号： | 74LCX821MTCX |
| 厂家： | 
ONSEMI |
| 描述： | 带 5V 耐受输入和输出的低压 10 位 D 型触发器 PC 驱动 光电二极管 逻辑集成电路 触发器 |
| 文件： | 总10页 (文件大小：209K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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January 1996
Revised March 2001
74LCX821
Low Voltage 10-Bit D-Type Flip-Flop
with 5V Tolerant Inputs and Outputs
General Description
The LCX821 consists of ten D-type Flip-Flops with
3-STATE outputs for bus organized system applications.
The device is designed for low voltage (2.5V or 3.3V) VCC
Features
■ 5V tolerant inputs and outputs
■ 2.3V–3.6V VCC specifications provided
■ 7.0 ns tPD max (VCC = 3.3V), 10 µA ICC max
applications with capability of interfacing to a 5V signal
environment.
■ Power-down high impedance inputs and outputs
■ Supports live insertion/withdrawal (Note 1)
■ ±24 mA output drive (VCC = 3.0V)
The LCX821 is fabricated with an advanced CMOS tech-
nology to achieve high speed operation while maintaining
CMOS low power dissipation.
■ Implements patented noise/EMI reduction circuitry
■ Latch-up performance exceeds 500 mA
■ ESD performance:
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 VCC through a pull-up resistor: the minimum value or the
resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Order Number Package Number
Package Description
74LCX821WM
74LCX821MSA
74LCX821MTC
M24B
MSA24
MTC24
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
24-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix “X” to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
© 2001 Fairchild Semiconductor Corporation
DS012635
www.fairchildsemi.com
Pin Descriptions
Function Table
Pin Names
Description
Data Inputs
Clock Input
Inputs
Internal Outputs
Function
D0–D9
CLK
OE CLK
D
Q
On
H
H
H
H
L
H
H
L
H
L
NC
NC
L
Z
Z
Hold
Hold
Load
Load
OE
Output Enable Input
O0–O9
3-STATE Latch Outputs
Z
H
L
H
Z
L
L
Data Available
L
H
L
H
H
Data Available
L
H
H
NC
NC
NC
NC
No Change in Data
No Change in Data
L
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impendance
= LOW-to-HIGH Transition
NC = No Change
Functional Description
The LCX821 consists of ten edge-triggered flip-flops with
individual D-type inputs with 3-STATE true outputs. The
buffered clock and buffered Output Enable are common to
all flip-flops. The ten 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 (CLK) transition.
With the Output Enable (OE) LOW, the contents of the ten
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 state of the flip-flops.
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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2
Absolute Maximum Ratings(Note 2)
Symbol
VCC
Parameter
Supply Voltage
Value
Conditions
Units
−0.5 to +7.0
−0.5 to +7.0
−0.5 to +7.0
V
V
VI
DC Input Voltage
VO
DC Output Voltage
Output in 3-STATE
V
−0.5 to VCC + 0.5 Output in HIGH or LOW State (Note 3)
IIK
DC Input Diode Current
DC Output Diode Current
−50
−50
VI < GND
mA
mA
IOK
V
V
O < GND
O > VCC
+50
IO
DC Output Source/Sink Current
DC Supply Current per Supply Pin
DC Ground Current per Ground Pin
Storage Temperature
±50
mA
mA
mA
°C
ICC
±100
IGND
TSTG
±100
−65 to +150
Recommended Operating Conditions (Note 4)
Symbol
Parameter
Min
2.0
1.5
0
Max
3.6
3.6
5.5
VCC
5.5
±24
±12
±8
Units
VCC
Supply Voltage
Operating
Data Retention
V
V
V
VI
Input Voltage
VO
Output Voltage
HIGH or LOW State
3-STATE
0
0
IOH/IOL
Output Current
VCC = 3.0V − 3.6V
VCC = 2.7V − 3.0V
VCC = 2.3V − 2.7V
mA
TA
Free-Air Operating Temperature
−40
85
°C
∆t/∆V
Input Edge Rate, VIN = 0.8V − 2.0V, VCC = 3.0V
0
10
ns/V
Note 2: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated
at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Ratings. The “Recom-
mended Operating Conditions” table will define the conditions for actual device operation.
Note 3: IO Absolute Maximum Rating must be observed.
Note 4: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
VCC
TA = −40°C to +85°C
Symbol
VIH
Parameter
Conditions
Units
(V)
2.3 − 2.7
2.7 − 3.6
2.3 − 2.7
2.7 − 3.6
2.3 − 3.6
2.3
Min
1.7
2.0
Max
HIGH Level Input Voltage
V
V
VIL
LOW Level Input Voltage
HIGH Level Output Voltage
0.7
0.8
VOH
I
I
I
I
I
I
I
I
I
I
OH = −100 µA
OH = −8 mA
OH = −12 mA
OH = −18 mA
OH = −24 mA
OL = 100 µA
OL = 8 mA
VCC − 0.2
1.8
2.7
2.2
V
V
3.0
2.4
3.0
2.2
VOL
LOW Level Output Voltage
2.3 − 3.6
2.3
0.2
0.6
OL = 12 mA
OL = 16 mA
OL = 24 mA
2.7
0.4
3.0
0.4
3.0
0.55
±5.0
II
Input Leakage Current
0 ≤ VI ≤ 5.5V
0 ≤ VO ≤ 5.5V
VI = VIH or VIL
2.3 − 3.6
µA
µA
µA
IOZ
3-STATE Output Leakage
2.3 − 3.6
±5.0
IOFF
Power-Off Leakage Current
VI or VO = 5.5V
0
10
3
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DC Electrical Characteristics (Continued)
VCC
TA = −40°C to +85°C
Symbol
ICC
Parameter
Conditions
Units
(V)
Min
Max
10
Quiescent Supply Current
VI = VCC or GND
3.6V ≤ VI, VO ≤ 5.5V (Note 5)
VIH = VCC − 0.6V
2.3 − 3.6
2.3 − 3.6
2.3 − 3.6
µA
µA
±10
500
∆ICC
Increase in ICC per Input
Note 5: Outputs disabled or 3-STATE only.
AC Electrical Characteristics
T
A = −40°C to +85°C, RL = 500Ω
CC = 2.7V
L = 50 pF L = 30 pF
Max Min Max
V
CC = 3.3V ± 0.3V
L = 50 pF
Max
V
V
CC = 2.5V ± 0.2V
Symbol
Parameter
Units
C
C
C
Min
Min
fMAX
Maximum Clock Frequency
Propagation Delay
CLK to On
150
1.5
1.5
1.5
1.5
1.5
1.5
MHz
ns
tPHL
tPLH
tPZL
tPZH
tPLZ
tPHZ
tOSHL
tOSLH
tS
7.0
7.0
7.5
7.5
6.5
6.5
1.0
1.0
1.5
1.5
1.5
1.5
1.5
1.5
7.5
7.5
8.0
8.0
7.0
7.0
1.5
1.5
1.5
1.5
1.5
1.5
8.4
8.4
9.8
9.8
7.8
7.8
Output Enable Time
ns
ns
ns
Output Disable Time
Output to Output Skew
(Note 6)
Setup Time, Dn to CLK
Hold Time, Dn to CLK
CLK Pulse Width
2.5
1.5
3.3
2.5
1.5
3.3
4.0
2.0
4.0
ns
ns
ns
tH
tW
Note 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 (tOSHL) or LOW-to-HIGH (tOSLH).
Dynamic Switching Characteristics
VCC
TA = 25°C
Symbol
VOLP
Parameter
Conditions
Units
(V)
3.3
2.5
3.3
2.5
Typical
0.8
Quiet Output Dynamic Peak VOL
C
C
C
C
L = 50 pF, VIH = 3.3V, VIL = 0V
L = 30 pF, VIH = 2.5V, VIL = 0V
L = 50 pF, VIH = 3.3V, VIL = 0V
L = 30 pF, VIH = 2.5V, VIL = 0V
V
0.6
VOLV
Quiet Output Dynamic Valley VOL
−0.8
−0.6
V
Capacitance
Symbol
Parameter
Conditions
CC = Open, VI = 0V or VCC
Typical
Units
pF
CIN
Input Capacitance
Output Capacitance
V
V
V
7
8
CO
CC = 3.3V, VI = 0V or VCC
pF
CPD
Power Dissipation Capacitance
CC = 3.3V, VI = 0V or VCC, f = 10 MHz
20
pF
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4
AC LOADING and WAVEFORMS Generic for LCX Family
FIGURE 1. AC Test Circuit (CL includes probe and jig capacitance)
Test
tPLH, tPHL
tPZL, tPLZ
Switch
Open
6V at VCC = 3.3 ± 0.3V
VCC x 2 at VCC = 2.5 ± 0.2V
tPZH,tPHZ
GND
3-STATE Output High Enable and
Waveform for Inverting and Non-Inverting Functions
Disable Times for Logic
Setup Time, Hold Time and Recovery Time for Logic
Propagation Delay. Pulse Width and trec Waveforms
trise and tfall
3-STATE Output Low Enable and
Disable Times for Logic
FIGURE 2. Waveforms
(Input Characteristics; f =1MHz, tr = tf = 3ns)
VCC
Symbol
3.3V ± 0.3V
1.5V
2.7V
1.5V
2.5V ± 0.2V
VCC/2
Vmi
Vmo
Vx
1.5V
1.5V
VCC/2
V
OL + 0.3V
V
OL + 0.3V
VOL + 0.15V
Vy
V
OH − 0.3V
V
OH − 0.3V
VOH − 0.15V
5
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Schematic Diagram Generic for LCX Family
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6
Physical Dimensions inches (millimeters) unless otherwise noted
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
Package Number M24B
24-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
Package Number MSA24
7
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC24
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
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 THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
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 rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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www.fairchildsemi.com
8
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
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