MC74LVX245MELG [ONSEMI]
LV/LV-A/LVX/H SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, LEAD FREE, EIAJ, SO-20;
| 型号： | MC74LVX245MELG |
| 厂家： | 
ONSEMI |
| 描述： | LV/LV-A/LVX/H SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, LEAD FREE, EIAJ, SO-20 总线收发器 |
| 文件： | 总8页 (文件大小：100K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MC74LVX245
Octal Bus Transceiver
With 5 V−Tolerant Inputs
The MC74LVX245 is an advanced high speed CMOS octal bus
transceiver.
It is intended for two−way asynchronous communication between
data buses. The direction of data transmission is determined by the
level of the T/R input. The output enable pin (OE) can be used to
disable the device, so that the buses are effectively isolated.
All inputs are equipped with protection circuits against static
discharge.
http://onsemi.com
MARKING
DIAGRAMS
20
Features
SOIC−20
DW SUFFIX
CASE 751D
LVX245
AWLYYWW
• High Speed: t = 4.7 ns (Typ) at V = 3.3 V
PD
CC
20
• Low Power Dissipation: I = 4 mA (Max) at T = 25°C
CC
A
1
• Power Down Protection Provided on Inputs
1
• Balanced Propagation Delays
• Low Noise: V
= 0.8 V (Max)
OLP
20
1
• Pin and Function Compatible with Other Standard Logic Families
• Latchup Performance Exceeds 300 mA
• ESD Performance: Human Body Model > 2000 V;
Machine Model > 200 V
LVX
245
ALYW
TSSOP−20
DT SUFFIX
CASE 948E
20
1
• Pb−Free Packages are Available*
Application Notes
20
• Do not force a signal on an I/O pin when it is an active output,
damage may occur
SOEIAJ−20
M SUFFIX
CASE 967
74LVX245
AWLYWW
• All floating (high impedance) input or I/O pins must be fixed by
means of pullup or pulldown resistors or bus terminator ICs
20
1
1
• A parasitic diode is formed between the bus and V terminals.
CC
Therefore, the LVX245 cannot be used to interface 5.0 V to 3.0 V
systems directly
V
OE
19
B0
18
B1
17
B2
16
B3
15
B4
14
B5
13
B6
12
B7
11
CC
A
= Assembly Location
WL, L = Wafer Lot
Y, YY = Year
20
W, WW = Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
1
2
3
4
5
6
7
9
8
10
T/R
A0
A1
A2
A3
A4
A5
A6
A7 GND
Figure 1. 20−Lead Pinout (Top View)
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
Semiconductor Components Industries, LLC, 2005
1
Publication Order Number:
March, 2005 − Rev. 3
MC74LVX245/D
MC74LVX245
Table 1. PIN NAMES
OE 19
T/R 1
Pins
Function
OE
Output Enable Input
T/R
A0−A7
Bo−B7
Transmit/Receive Input
Side A 3−State Inputs or 3−State Outputs
Side B 3−State Inputs or 3−State Outputs
2
3
4
5
6
7
8
9
A0
A1
A2
A3
A4
A5
A6
A7
18
17
16
15
14
13
12
B0
B1
B2
B3
B4
B5
B6
B7
INPUTS
OPERATING MODE
Non−Inverting
OE
L
T/R
L
B Data to A Bus
A Data to B Bus
Z
L
H
H
X
H = High Voltage Level; L = Low Voltage Level; Z = High
Impedance State; X = High or Low Voltage Level and Transitions
are Acceptable; For I reasons, Do Not Float Inputs
CC
11
Figure 2. Logic Diagram
ORDERING INFORMATION
Device
†
Package
Shipping
MC74LVX245DWR2
MC74LVX245DWR2G
SOIC−20
1000 / Tape & Reel
1000 / Tape & Reel
SOIC−20
(Pb−Free)
MC74LVX245DTR2
MC74LVX245M
TSSOP−20*
2500 / Tape & Reel
50 Units / Rail
SOEIAJ−20
(Pb−Free)
MC74LVX245MEL
SOEIAJ−20
(Pb−Free)
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.
http://onsemi.com
2
MC74LVX245
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
V
CC
DC Supply Voltage
–0.5 to +7.0
–0.5 to +7.0
V
DC Input Voltage (T/R, OE)
DC Output Voltage
V
in
I/O
IK
V
–0.5 to V +0.5
V
CC
I
Input Diode Current
−20
±20
mA
mA
mA
mA
mW
°C
I
Output Diode Current
DC Output Current, per Pin
OK
I
±25
out
CC
I
DC Supply Current, V and GND Pins
±75
CC
P
D
Power Dissipation
180
T
stg
Storage Temperature
–65 to +150
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
2.0
0
Max
3.6
Unit
V
V
CC
DC Supply Voltage
V
in
DC Input Voltage (T/R, OE)
DC Output Voltage
5.5
V
V
I/O
0
V
CC
V
T
Operating Temperature, All Package Types
Input Rise and Fall Time
−40
0
+85
100
°C
ns/V
A
Dt/DV
DC ELECTRICAL CHARACTERISTICS
T
A
= 25°C
T
A
= − 40 to 85°C
V
CC
V
Min
Typ
Max
Min
1.5
2.0
2.4
Max
Symbol
Parameter
Test Conditions
Unit
V
IH
High−Level Input Voltage
2.0
3.0
3.6
1.5
2.0
2.4
V
V
Low−Level Input Voltage
High−Level Output Voltage
2.0
3.0
3.6
0.5
0.8
0.8
0.5
0.8
0.8
V
V
V
IL
V
OH
I
I
I
= −50 mA
= −50 mA
= −4 mA
2.0
3.0
3.0
1.9
2.9
2.58
2.0
3.0
1.9
2.9
2.48
OH
OH
OH
(V = V or V )
in
IH
IL
V
I
Low−Level Output Voltage
(V = V or V )
I
OL
I
OL
I
OL
= 50 mA
= 50 mA
= 4 mA
2.0
3.0
3.0
0.0
0.0
0.1
0.1
0.36
0.1
0.1
0.44
OL
in
IH
IL
Input Leakage Current
V
= 5.5 V or GND
3.6
3.6
3.6
±0.1
±1.0
±2.5
40.0
mA
mA
mA
in
in
(T/R, OE)
= V or V
IH
I
Maximum 3−State Leakage Current
Quiescent Supply Current
V
V
±0.2
5
OZ
in
out
IL
= V or GND
CC
I
V
= V or GND
4.0
CC
in
CC
http://onsemi.com
3
MC74LVX245
AC ELECTRICAL CHARACTERISTICS (Input t = t = 3.0 ns)
r
f
T
A
= 25°C
T = − 40 to 85°C
A
Min
Typ
Max
Min
1.0
Max
Symbol
Parameter
Test Conditions
Unit
t
t
t
,
Propagation Delay
Input to Output
V
V
V
= 2.7 V
C = 15 pF
L
6.1
8.6
10.7
14.2
13.5
17.0
ns
PLH
t
CC
CC
CC
C = 50 pF
L
1.0
PHL
= 3.3 ± 0.3 V
= 2.7 V
C = 15 pF
C = 50 pF
L
4.7
7.2
6.6
10.1
1.0
1.0
8.0
11.5
L
,
Output Enable Time to
High and Low Level
C = 15 pF
L
9.0
11.5 20.4
16.9
1.0
1.0
20.5
24.0
ns
ns
ns
PZL
t
R = 1 kW
C = 50 pF
L
PZH
L
V
CC
= 3.3 ± 0.3 V
C = 15 pF
L
7.1
9.6
11.0
14.5
1.0
1.0
13.0
16.5
R = 1 kW
C = 50 pF
L
L
,
Output Disable Time From
High and Low Level
V
CC
= 2.7 V
C = 50 pF
L
11.5 18.0
1.0
21.0
PLZ
t
R = 1 kW
PHZ
L
V
CC
= 3.3 ± 0.3 V
C = 50 pF
L
9.6
12.8
1.0
14.5
R = 1 kW
L
t
t
Output−to−Output Skew
(Note 1)
V
CC
V
CC
= 2.7 V
C = 50 pF
L
1.5
1.5
1.5
1.5
OSHL
OSLH
= 3.3 ±0.3 V
C = 50 pF
L
1. 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
guaranteed by design.
) or LOW−to−HIGH (t
); parameter
OSHL
OSLH
CAPACITIVE CHARACTERISTICS
T
A
= 25°C
T = − 40 to 85°C
A
Min
Typ
4
Max
Min
Max
Symbol
Parameter
Unit
pF
C
Input Capacitance (T/R, OE)
10
10
in
C
I/O
C
PD
Maximum 3−State I/O Capacitance
8
pF
Power Dissipation Capacitance (Note 2)
21
pF
2. C is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
PD
Average operating current can be obtained by the equation: I
dynamic power consumption; P = C ꢀ V
) = C ꢀ V ꢀ f + I /8 (per bit). C is used to determine the no−load
CC(OPR
PD CC in CC PD
2
ꢀ f + I ꢀ V
.
D
PD
CC
in
CC
CC
NOISE CHARACTERISTICS (Input t = t = 3.0ns, C = 50pF, V = 3.3V, Measured in SOIC Package)
r
f
L
CC
T
A
= 25°C
Typ
0.5
Max
Symbol
Characteristic
Unit
V
V
Quiet Output Maximum Dynamic V
0.8
−0.8
2.0
OLP
OLV
OL
V
Quiet Output Minimum Dynamic V
−0.5
V
OL
V
IHD
Minimum High Level Dynamic Input Voltage
Maximum Low Level Dynamic Input Voltage
V
V
ILD
0.8
V
http://onsemi.com
4
MC74LVX245
SWITCHING WAVEFORMS
V
CC
T/R
50%
GND
V
CC
V
CC
Input
50% V
OE
50% V
CC
CC
50%
A or B
GND
t
t
PLZ
GND
PZL
HIGH
t
t
PHL
PLH
IMPEDANCE
50% V
Output
B or A
CC
A or B
A or B
50% V
CC
V
+0.3V
−0.3V
OL
t
t
PHZ
PZH
V
OH
50% V
CC
HIGH
IMPEDANCE
Figure 3.
Figure 4.
TEST CIRCUITS
TEST POINT
OUTPUT
TEST POINT
1 kW
CONNECT TO V WHEN
CC
OUTPUT
TESTING t AND t
PLZ
.
PZL
DEVICE
UNDER
TEST
DEVICE
UNDER
TEST
CONNECT TO GND WHEN
TESTING t AND t
.
PZH
PHZ
C *
L
C *
L
*Includes all probe and jig capacitance
*Includes all probe and jig capacitance
Figure 5. Propagation Delay Test Circuit
Figure 6. 3−State Test Circuit
http://onsemi.com
5
MC74LVX245
PACKAGE DIMENSIONS
SOIC−20
DW SUFFIX
CASE 751D−05
ISSUE G
NOTES:
D
1. DIMENSIONS ARE IN MILLIMETERS.
2. INTERPRET DIMENSIONS AND TOLERANCES
PER ASME Y14.5M, 1994.
A
q
3. DIMENSIONS D AND E DO NOT INCLUDE MOLD
PROTRUSION.
20
11
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE PROTRUSION
SHALL BE 0.13 TOTAL IN EXCESS OF B
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
E
B
1
10
MILLIMETERS
DIM MIN
MAX
2.65
0.25
0.49
0.32
12.95
7.60
A
A1
B
C
D
E
2.35
0.10
0.35
0.23
12.65
7.40
20X B
M
S
S
B
T
0.25
A
e
1.27 BSC
H
h
10.05
0.25
0.50
0
10.55
0.75
0.90
7
A
L
q
_
_
SEATING
PLANE
18X e
A1
C
T
TSSOP−20
DT SUFFIX
CASE 948E−02
ISSUE B
NOTES:
20X K REF
1. DIMENSIONING AND TOLERANCING
PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION:
MILLIMETER.
M
S
S
V
0.10 (0.004)
T U
S
0.15 (0.006) T U
K
3. DIMENSION A DOES NOT INCLUDE
MOLD FLASH, PROTRUSIONS OR GATE
BURRS. MOLD FLASH OR GATE BURRS
SHALL NOT EXCEED 0.15 (0.006) PER
SIDE.
4. DIMENSION B DOES NOT INCLUDE
INTERLEAD FLASH OR PROTRUSION.
INTERLEAD FLASH OR PROTRUSION
SHALL NOT EXCEED 0.25 (0.010) PER
SIDE.
K1
20
11
2X L/2
J J1
B
L
−U−
PIN 1
IDENT
SECTION N−N
5. DIMENSION K DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08
(0.003) TOTAL IN EXCESS OF THE K
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
1
10
0.25 (0.010)
N
S
0.15 (0.006) T U
6. TERMINAL NUMBERS ARE SHOWN
FOR REFERENCE ONLY.
7. DIMENSION A AND B ARE TO BE
DETERMINED AT DATUM PLANE −W−.
M
A
−V−
N
MILLIMETERS
DIM MIN MAX
INCHES
MIN
MAX
0.260
0.177
0.047
0.006
0.030
F
A
B
6.40
4.30
−−−
6.60 0.252
4.50 0.169
DETAIL E
C
1.20
−−−
D
0.05
0.50
0.15 0.002
0.75 0.020
−W−
F
C
G
H
0.65 BSC
0.026 BSC
0.27
0.09
0.09
0.19
0.19
0.37
0.011
0.015
0.008
0.006
0.012
0.010
J
0.20 0.004
0.16 0.004
0.30 0.007
0.25 0.007
G
D
J1
K
H
DETAIL E
0.100 (0.004)
−T− SEATING
K1
L
6.40 BSC
0 8 0 8
0.252 BSC
M
_
_
_
_
PLANE
http://onsemi.com
6
MC74LVX245
PACKAGE DIMENSIONS
SOEIAJ−20
M SUFFIX
CASE 967−01
ISSUE O
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
L
E
20
11
Q
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS D AND E DO NOT INCLUDE MOLD
FLASH OR PROTRUSIONS AND ARE MEASURED
AT THE PARTING LINE. MOLD FLASH OR
PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006)
PER SIDE.
1
H
E
_
E
M
4. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
L
1
10
5. THE LEAD WIDTH DIMENSION (b) DOES NOT
INCLUDE DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08 (0.003)
TOTAL IN EXCESS OF THE LEAD WIDTH
DIMENSION AT MAXIMUM MATERIAL CONDITION.
DAMBAR CANNOT BE LOCATED ON THE LOWER
RADIUS OR THE FOOT. MINIMUM SPACE
BETWEEN PROTRUSIONS AND ADJACENT LEAD
TO BE 0.46 ( 0.018).
DETAIL P
Z
D
VIEW P
e
A
c
MILLIMETERS
INCHES
MIN
DIM MIN
MAX
2.05
0.20
0.50
0.27
12.80
5.45
MAX
0.081
0.008
0.020
0.011
0.504
0.215
A
A
1
−−−
0.05
0.35
0.18
12.35
5.10
−−−
0.002
0.014
0.007
0.486
0.201
A
b
1
b
c
M
0.10 (0.004)
0.13 (0.005)
D
E
e
1.27 BSC
0.050 BSC
H
7.40
0.50
1.10
8.20
0.85
1.50
0.291
0.020
0.043
0.323
0.033
0.059
E
L
L
E
M
Q
0
10
0
10
_
0.035
0.032
_
_
_
0.70
−−−
0.90
0.81
0.028
−−−
1
Z
http://onsemi.com
7
MC74LVX245
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC 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.
“Typical” parameters which may be provided in SCILLC 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. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC 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 SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
ON Semiconductor Website: http://onsemi.com
Order Literature: http://www.onsemi.com/litorder
Literature Distribution Center for ON Semiconductor
P.O. Box 61312, Phoenix, Arizona 85082−1312 USA
Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada
Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
Japan: ON Semiconductor, Japan Customer Focus Center
2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051
Phone: 81−3−5773−3850
For additional information, please contact your
local Sales Representative.
MC74LVX245/D
相关型号：
SI9130DB
5- and 3.3-V Step-Down Synchronous ConvertersWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1-E3
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135_11
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9136_11
Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130CG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130LG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130_11
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137DB
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137LG
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9122E
500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification DriversWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
©2020 ICPDF网 联系我们和版权申明