74VCX245MTCX [ONSEMI]
带 3.6V 耐压输入和输出的低压双向收发器;
| 型号： | 74VCX245MTCX |
| 厂家： | 
ONSEMI |
| 描述： | 带 3.6V 耐压输入和输出的低压双向收发器 光电二极管 逻辑集成电路 |
| 文件： | 总13页 (文件大小：689K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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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
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is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
June 1999
Revised December 2013
74VCX245
Low Voltage Bidirectional Transceiver
with 3.6V Tolerant Inputs and Outputs
General Description
Features
■ 1.4V to 3.6V VCC supply operation
The VCX245 contains eight non-inverting bidirectional buff-
ers with 3-STATE outputs and is intended for bus oriented
applications. The T/R input determines the direction of data
flow. The OE input disables both the A and B ports by plac-
ing them in a high impedance state.
■ 3.6V tolerant inputs and outputs
■ Power-off high impedance inputs and outputs
■ Supports Live Insertion and Withdrawal (Note 1)
■ tPD
The 74VCX245 is designed for low voltage (1.4V to 3.6V)
VCC applications with I/O compatibility up to 3.6V.
3.5 ns max for 3.0V to 3.6V VCC
The 74VCX245 is fabricated with an advanced CMOS
technology to achieve high-speed operation while main-
taining low CMOS power dissipation.
■ Static Drive (IOH/IOL
)
24 mA @ 3.0V VCC
■ Uses proprietary noise/EMI reduction
circuitry
■ Latchup performance exceeds 300 mA
■ ESD performance:
Human body model 2000V
Machine model 200V
■ Leadless DQFN Pb-Free package
Note 1: To ensure the high impedance state during power up and power
down, OE should be tied to V
through a pull up resistor. The minimum
CC
n
value of the resistor is determined by the current sourcing capability of the
driver.
Ordering Code:
Package
Order Number
Package Description
Number
74VCX245WM
(Note 2)
M20B
MLP020B
MTC20
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74VCX245BQX
(Note 3)
Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC
MO-241, 2.5 x 4.5mm
74VCX245MTC
(Note 2)
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pb-Free package per JEDEC J-STD-020B.
Note 2: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Note 3: DQFN package available in Tape and Reel only,
Logic Symbol
Pin Descriptions
Pin Names
Description
OE
Output Enable Input (Active LOW)
Transmit/Receive Input
T/R
A0–A7
B0–B7
DAP
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
No Connect
Note: DAP (Die Attach Pad)
© 2013 Fairchild Semiconductor Corporation
DS500167
www.fairchildsemi.com
Connection Diagrams
Truth Table
Pin Assignments for SOIC and TSSOP
Inputs
Outputs
OE T/R
L
L
L
H
X
Bus B0–B7 Data to Bus A0–A7
Bus A0–A7 Data to Bus B0–B7
H
HIGH Z State on A0–A7, B0–B7 (Note 4)
H
L
X
Z
HIGH Voltage Level
LOW Voltage Level
Immaterial
High Impedance
Note 4: Unused bus terminals during HIGH Z State must be held HIGH or
LOW.
Logic Diagram
Pin Assignment for DQFN
(Bottom View)
(Top Through View)
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2
Absolute Maximum Ratings(Note 5)
Recommended Operating
Conditions (Note 7)
Supply Voltage (VCC
)
0.5V to 4.6V
0.5V to 4.6V
DC Input Voltage (VI)
Power Supply
DC Output Voltage (VO)
Outputs 3-STATE
Operating
1.4V to 3.6V
0.3V to 3.6V
0.5V to 4.6V
0.5V to VCC 0.5V
50 mA
Input Voltage
Outputs Active (Note 6)
DC Input Diode Current (IIK) VI 0V
Output Voltage (VO)
Output in Active States
Output in 3-STATE
0V to VCC
0V to 3.6V
DC Output Diode Current (IOK
VO 0V
)
50 mA
50 mA
Output Current in IOH/IOL
VCC 3.0V to 3.6V
VO VCC
24 mA
18 mA
DC Output Source/Sink Current
(IOH/IOL
VCC 2.3V to 2.7V
)
50 mA
100 mA
VCC 1.65V to 2.3V
VCC 1.4V to 1.6V
6 mA
DC VCC or Ground Current
Storage Temperature (TSTG
2 mA
)
65 C to 150 C
Free Air Operating Temperature (TA)
Minimum Input Edge Rate ( t/ V)
VIN 0.8V to 2.0V, VCC 3.0V
40 C to 85 C
10 ns/V
Note 5: 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 Rat-
ings. The “Recommended Operating Conditions” table will define the condi-
tions for actual device operation.
Note 6: I Absolute Maximum Rating must be observed.
O
Note 7: Floating or unused inputs must be held HIGH or LOW.
DC Electrical Characteristics
V
CC
Symbol
Parameter
Conditions
Min
Max
Units
(V)
V
V
V
HIGH Level Input Voltage
2.7 to 3.6
2.3 to 2.7
2.0
1.6
IH
V
1.65 to 2.3 0.65
1.4 to 1.6 0.65
2.7 to 3.6
V
CC
CC
V
LOW Level Input Voltage
HIGH Level Output Voltage
0.8
0.7
IL
2.3 to 2.7
V
1.65 to 2.3
0.35
0.35
V
V
CC
CC
1.4 to 1.6
I
I
I
I
I
I
I
I
I
I
I
I
100
A
2.7 to 3.6
2.7
V
0.2
0.2
0.2
OH
OH
OH
OH
OH
OH
OH
OH
OH
OH
OH
OH
OH
CC
12 mA
18 mA
24 mA
2.2
3.0
2.4
2.2
3.0
100
A
2.3 to 2.7
2.3
V
CC
6 mA
12 mA
18 mA
2.0
1.8
1.7
V
2.3
2.3
100
A
1.65 to 2.3
1.65
V
V
CC
6 mA
100
1.25
0.2
1.05
A
1.4 to 1.6
1.4
CC
2 mA
3
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DC Electrical Characteristics (Continued)
V
CC
Symbol
Parameter
Conditions
Min
Max
Units
(V)
2.7 to 3.6
2.7
V
LOW Level Output Voltage
I
100
A
0.2
0.4
0.4
0.55
0.2
0.4
0.6
0.2
0.3
0.2
0.35
5.0
OL
OL
I
12 mA
18 mA
24 mA
OL
I
3.0
OL
I
3.0
OL
I
100
A
2.3 to 2.7
2.3
OL
I
12 mA
18 mA
V
OL
I
2.3
OL
I
100
A
1.65 to 2.3
1.65
OL
I
6 mA
100
OL
I
A
1.4 to 1.6
1.4
OL
I
2 mA
OL
I
Input Leakage Current
0
V
V
3.6V
3.6V
1.4 to 3.6
A
A
A
A
A
I
I
I
3-STATE Output Leakage
0
OZ
O
1.4 to 3.6
10
V
0
V
or V
IH IL
I
I
I
Power-OFF Leakage Current
Quiescent Supply Current
(V , V )
3.6V
V or GND
CC
0
10
20
OFF
I
O
I
V
V
V
1.4 to 3.6
1.4 to 3.6
2.7 to 3.6
CC
I
(V , V )
O
3.6V (Note 8)
20
CC
IH
I
I
Increase in I per Input
V 0.6V
CC
750
CC
CC
Note 8: Outputs disabled or 3-STATE only.
AC Electrical Characteristics (Note 9)
V
T
40 C to 85 C
Figure
CC
A
Symbol
, t
Parameter
Conditions
Units
(V)
Min
Max
3.5
Number
t
t
t
Propagation Delay
to B or B to A
n
C
30 pF, R
500
3.3 0.3
2.5 0.2
1.8 0.15
1.5 0.1
0.6
0.8
1.5
1.0
PHL PLH
L
L
Figures
1, 2
A
4.2
n
n
n
ns
ns
8.4
C
C
15 pF, R
30 pF, R
2k
16.8
Figures
5, 6
L
L
, t
Output Enable Time
Output Disable Time
500
3.3 0.3
2.5 0.2
1.8 0.15
1.5 0.1
0.6
0.8
1.5
1.0
4.5
5.6
PZL PZH
L
L
Figures
1, 3, 4
9.8
C
C
15 pF, R
30 pF, R
2k
19.6
Figures
5, 7, 8
L
L
, t
500
3.3 0.3
2.5 0.2
1.8 0.15
1.5 0.1
0.6
0.8
1.5
1.0
3.6
4.0
PLZ PHZ
L
L
Figures
1, 3, 4
ns
ns
7.2
C
C
15 pF, R
30 pF, R
2k
14.4
Figures
5, 7, 8
L
L
t
t
Output to Output Skew
(Note 10)
500
3.3 0.3
2.5 0.2
1.8 0.15
1.5 0.1
0.5
0.5
OSHL
OSLH
L
L
0.75
1.5
C
15 pF, R
2k
L
L
Note 9: For C
50 F, add approximately 300 ps to the AC maximum specification.
P
L
Note 10: 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
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4
Dynamic Switching Characteristics
T
25 C
V
(V)
A
CC
Symbol
Parameter
Conditions
Units
Typical
0.3
V
V
V
Quiet Output Dynamic Peak V
C
C
C
30 pF, V
30 pF, V
30 pF, V
V
V
V
, V
, V
, V
0V
0V
0V
1.8
2.5
3.3
1.8
2.5
3.3
1.8
2.5
3.3
OLP
OL
L
L
L
IH
IH
IH
CC
CC
CC
IL
0.7
V
1.0
Quiet Output Dynamic Valley V
Quiet Output Dynamic Valley V
0.3
OLV
OL
IL
0.7
V
V
1.0
1.3
OHV
OH
IL
1.7
2.0
Capacitance
T
25 C
A
Symbol
Parameter
Conditions
Units
Typical
6.0
C
Input Capacitance
Input/Output Capacitance
Power Dissipation Capacitance
V
V
V
0V or V , V
1.8V, 2.5V or 3.3V
1.8V, 2.5V or 3.3V
pF
pF
pF
IN
I
I
I
CC
CC
C
C
0V or V , V
7.0
I/O
PD
CC
CC
0V or V , f 10 MHz, V
CC
1.8V, 2.5V or 3.3V
20.0
CC
5
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AC Loading and Waveforms (V 3.3V r 0.3V to 1.8V r 0.15V)
CC
FIGURE 1. AC Test Circuit
TEST
SWITCH
t
PLH, tPHL
Open
6V at VCC 3.3V 0.3V;
VCC x 2 at VCC 2.5V 0.2V; 1.8V 0.15V
GND
t
PZL, tPLZ
tPZH, tPHZ
FIGURE 2. Waveform for Inverting and Non-Inverting Functions
FIGURE 3. 3-STATE Output High Enable and Disable Times for Low Voltage Logic
FIGURE 4. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic
VCC
Symbol
3.3V 0.3V
1.5V
2.5V 0.2V
VCC/2
1.8V 0.15V
VCC/2
Vmi
Vmo
VX
1.5V
VCC/2
VCC/2
VOL 0.3V
VOH 0.3V
VOL 0.15V
VOH 0.15V
VOL 0.15V
VOH 0.15V
VY
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6
AC Loading and Waveforms (V 1.5 r 0.1V)
CC
TEST
SWITCH
Open
t
PLH, tPHL
tPZL, tPLZ
tPZH, tPHZ
VCC x 2 at VCC 1.5V 0.1V
GND
FIGURE 5. AC Test Circuit
FIGURE 6. Waveform for Inverting and Non-Inverting Functions
FIGURE 7. 3-STATE Output High Enable and Disable Times for Low Voltage Logic
FIGURE 8. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic
VCC
Symbol
1.5V 0.1V
Vmi
Vmo
VX
VCC/2
VCC/2
VOL 0.1V
VOH 0.1V
VY
7
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Tape and Reel Specification
Tape Format for DQFN
Package
Tape
Section
Number
Cavities
125 (typ)
3000
Cavity
Status
Empty
Filled
Cover Tape
Status
Designator
Leader (Start End)
Carrier
Sealed
BQX
Sealed
Trailer (Hub End)
75 (typ)
Empty
Sealed
TAPE DIMENSIONS inches (millimeters)
REEL DIMENSIONS inches (millimeters)
Tape Size
A
B
C
D
N
W1
W2
13.0
0.059
(1.50)
0.512
(13.00)
0.795
(20.20)
2.165
0.488
(12.4)
0.724
(18.4)
12 mm
(330.0)
(55.00)
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8
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Package Number M20B
9
www.fairchildsemi.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC MO-241, 2.5 x 4.5mm
Package Number MLP020B
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10
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC20
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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11
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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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