MC74LCX245MR2 [ONSEMI]
LVC/LCX/Z SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, EIAJ, SOP-20;
| 型号： | MC74LCX245MR2 |
| 厂家： | 
ONSEMI |
| 描述： | LVC/LCX/Z SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, EIAJ, SOP-20 光电二极管 输出元件 逻辑集成电路 |
| 文件： | 总9页 (文件大小：140K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MC74LCX245
Low-Voltage CMOS Octal
Transceiver
With 5 V−Tolerant Inputs and Outputs
(3−State, Non−Inverting)
http://onsemi.com
MARKING
The MC74LCX245 is a high performance, non−inverting octal
transceiver operating from a 2.0 to 5.5 V supply. High impedance TTL
compatible inputs significantly reduce current loading to input drivers
while TTL compatible outputs offer improved switching noise
DIAGRAMS
20
performance. A V specification of 5.5 V allows MC74LCX245 inputs
I
to be safely driven from 5 V devices if V is less than 5.0 V. The
MC74LCX245 is suitable for memory address driving and all TTL
level bus oriented transceiver applications.
Current drive capability is 24 mA at both A and B ports. The
Transmit/Receive (T/R) input determines the direction of data flow
through the bi−directional transceiver. Transmit (active−HIGH)
enables data from A ports to B ports; Receive (active−LOW) enables
data from B to A ports. The Output Enable input, when HIGH,
disables both A and B ports by placing them in a HIGH Z condition.
CC
SOIC−20
DW SUFFIX
CASE 751D
LCX245
AWLYYWWG
20
1
1
20
LCX
245
TSSOP−20
DT SUFFIX
CASE 948E
20
ALYWG
1
G
Features
1
• Designed for 2.0 to 5.5 V V Operation
CC
• 5 V Tolerant − Interface Capability With 5 V TTL Logic
• Supports Live Insertion and Withdrawal
1
• I
Specification Guarantees High Impedance When V = 0 V
OFF
CC
LCX
245
QFN20
MN SUFFIX
CASE 485AA
• LVTTL Compatible
• LVCMOS Compatible
• 24 mA Balanced Output Sink and Source Capability
ALYWG
G
• Near Zero Static Supply Current in All Three Logic States (10 mA)
Substantially Reduces System Power Requirements
A
L, WL
Y, YY
= Assembly Location
= Wafer Lot
= Year
• Latchup Performance Exceeds 500 mA
• ESD Performance:
Human Body Model >2000 V
Machine Model >200 V
W, WW = Work Week
G or G
= Pb−Free Package
• NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
*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, 2012
1
Publication Order Number:
October, 2012 − Rev. 11
MC74LCX245/D
MC74LCX245
V
OE B0
B1
B2
B3
B4
B5
B6
B7
CC
OE 19
T/R 1
20
19
18
17
16
15
14
12
13
11
2
3
4
5
6
7
A0
A1
A2
A3
A4
A5
A6
A7
18
17
16
15
14
13
12
11
B0
B1
B2
B3
B4
B5
B6
B7
1
2
3
4
5
6
7
9
8
10
T/R A0
A1
A2
A3
A4
A5
A6
A7 GND
19
12
11
10
20
PIN #1
QFN
2
9
Figure 1. Pinout (Top View)
PIN NAMES
PINS
FUNCTION
OE
Output Enable Input
8
9
T/R
Transmit/Receive Input
A0−A7
B0−B7
Side A 3−State Inputs or 3−State Outputs
Side B 3−State Inputs or 3−StateOutputs
TRUTH TABLE
INPUTS
OPERATING MODE
Non−Inverting
Figure 2. Logic Diagram
OE
T/R
L
L
L
H
X
B Data to A Bus
A Data to B Bus
Z
H
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
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2
MC74LCX245
MAXIMUM RATINGS
Symbol
Parameter
Value
Condition
Unit
V
V
V
V
DC Supply Voltage
−0.5 to +7.0
CC
I
DC Input Voltage
−0.5 ≤ V ≤ +7.0
V
I
DC Output Voltage
−0.5 ≤ V ≤ +7.0
Output in 3−State
V
O
O
−0.5 ≤ V ≤ V + 0.5
Output in HIGH or LOW State (Note 1)
V
O
CC
I
I
DC Input Diode Current
DC Output Diode Current
−50
V < GND
mA
mA
mA
mA
mA
mA
°C
IK
I
−50
+50
50
V < GND
O
OK
V
O
> V
CC
I
I
I
DC Output Source/Sink Current
DC Supply Current Per Supply Pin
DC Ground Current Per Ground Pin
Storage Temperature Range
Moisture Sensitivity
O
100
100
CC
GND
T
−65 to +150
STG
MSL
Level 1
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 absolute maximum rating must be observed.
O
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Typ
Max
Unit
V
CC
Supply Voltage
Operating
Data Retention Only
2.0
1.5
2.5, 3.3
2.5, 3.3
5.5
5.5
V
V
V
Input Voltage
0
5.5
V
V
I
Output Voltage
(HIGH or LOW State)
0
0
V
CC
5.5
O
(3−State)
I
HIGH Level Output Current
LOW Level Output Current
V
V
V
= 3.0 V − 3.6 V
= 2.7 V − 3.0 V
= 2.3 V − 2.7 V
− 24
− 12
− 8
mA
mA
OH
CC
CC
CC
I
OL
V
CC
V
CC
V
CC
= 3.0 V − 3.6 V
= 2.7 V − 3.0 V
= 2.3 V − 2.7 V
+ 24
+ 12
+ 8
T
Operating Free−Air Temperature
−55
+125
10
°C
A
Dt/DV
Input Transition Rise or Fall Rate, V from 0.8 V to 2.0 V, V = 3.0 V
0
ns/V
IN
CC
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3
MC74LCX245
DC ELECTRICAL CHARACTERISTICS
T
A
= −55°C to +125°C
Symbol
Characteristic
Condition
2.3 V ≤ V ≤ 2.7 V
Min
1.7
2.0
Max
Unit
V
IH
HIGH Level Input Voltage (Note 2)
V
CC
2.7 V ≤ V ≤ 3.6 V
CC
2.3 V ≤ V ≤ 2.7 V
0.7
0.8
V
LOW Level Input Voltage (Note 2)
HIGH Level Output Voltage
V
V
CC
IL
2.7 V ≤ V ≤ 3.6 V
CC
2.3 V ≤ V ≤ 3.6 V; I = 100 mA
V
CC
− 0.2
V
OH
CC
OL
V
= 2.3 V; I = −8 mA
1.8
2.2
2.4
2.2
CC
OH
V
CC
V
CC
V
CC
= 2.7 V; I = −12 mA
OH
= 3.0 V; I = −18 mA
OH
= 3.0 V; I = −24 mA
OH
2.3 V ≤ V ≤ 3.6 V; I = 100 mA
0.2
0.6
0.4
0.4
0.55
5
V
V
LOW Level Output Voltage
OL
CC
OL
V
CC
= 2.3 V; I = 8 mA
OL
V
= 2.7 V; I = 12 mA
OL
CC
CC
CC
V
V
= 3.0 V; I = 16 mA
OL
= 3.0 V; I = 24 mA
OL
I
3−State Output Current
V
CC
= 3.6 V, V = V or V ,
mA
OZ
IN
IH
IL
V
OUT
= 0 to 5.5 V
I
I
I
Power Off Leakage Current
Input Leakage Current
V
= 0, V = 5.5 V or V = 5.5 V
OUT
10
5
mA
mA
mA
mA
OFF
CC
IN
V
V
= 3.6 V, V = 5.5 V or GND
IN
IN
CC
CC
Quiescent Supply Current
= 3.6 V, V = 5.5 V or GND
10
500
CC
IN
DI
Increase in I per Input
2.3 ≤ V ≤ 3.6 V; V = V − 0.6 V
CC IH CC
CC
CC
2. These values of V are used to test DC electrical characteristics only.
I
AC CHARACTERISTICS t = t = 2.5 ns; R = 500 W
R
F
L
Limits
T
A
= −55°C to +125°C
V
CC
= 3.3 V 0.3V
V
CC
= 2.7 V
V
CC
= 2.5 V 0.2V
V
CC
= 5.0 V
C = 50 pF
L
C = 30 pF
L
C = 50 pF
L
C = 50 pF
L
Symbol
Parameter
Waveform
Unit
Min
Max
Min
Max
Min
Max
Min
Max
t
t
Propagation Delay
Input to Output
1
1.5
1.5
7.0
7.0
1.5
1.5
8.0
8.0
1.5
1.5
8.4
8.4
1.5
1.5
5.0
5.0
ns
PLH
PHL
t
t
Output Enable Time
to High and Low Level
2
2
1.5
1.5
8.5
8.5
1.5
1.5
9.5
9.5
1.5
1.5
10.5
10.5
1.5
1.5
7.0
7.0
ns
ns
ns
PZH
PZL
t
t
Output Disable Time From
High and Low Level
1.5
1.5
7.5
7.5
1.5
1.5
8.5
8.5
1.5
1.5
9.0
9.0
1.5
1.5
6.0
6.0
PHZ
PLZ
t
t
Output−to−Output Skew
(Note 3)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
OSHL
OSLH
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
) or LOW−to−HIGH (t
); parameter
OSHL
OSLH
guaranteed by design.
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4
MC74LCX245
DYNAMIC SWITCHING CHARACTERISTICS
T
A
= +25°C
Symbol
Characteristic
Condition
Min
Typ
Max
Unit
V
OLP
Dynamic LOW Peak Voltage (Note 4)
V
CC
V
CC
= 3.3 V, C = 50 pF, V = 3.3 V, V = 0 V
0.8
0.6
V
V
L
IH
IL
= 2.5 V, C = 30 pF, V = 2.5 V, V = 0 V
L
IH
IL
V
OLV
Dynamic LOW Valley Voltage (Note 4)
V
CC
V
CC
= 3.3 V, C = 50 pF, V = 3.3 V, V = 0 V
−0.8
−0.6
V
V
L
IH
IL
= 2.5 V, C = 30 pF, V = 2.5 V, V = 0 V
L
IH
IL
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
Parameter
Input Capacitance
Condition
= 3.3 V, V = 0 V or V
Typical
Unit
pF
C
C
C
V
V
7
8
IN
CC
I
CC
CC
Input/Output Capacitance
= 3.3 V, V = 0 V or V
pF
I/O
PD
CC
I
Power Dissipation Capacitance
10 MHz, V = 3.3 V, V = 0 V or V
25
pF
CC
I
CC
V
CC
OE, T/R
An, Bn
Vmi
Vmi
V
CC
0 V
Vmi
Vmi
t
t
PHZ
An, Bn
Bn, An
PZH
V
OH
V
HZ
0 V
t
t
PHL
PLH
Vmo
Vmo
V
OH
OL
Vmo
Vmo
t
t
PLZ
PZL
V
An, Bn
V
V
LZ
OL
WAVEFORM 1 − PROPAGATION DELAYS
WAVEFORM 2 − OUTPUT ENABLE AND DISABLE TIMES
= t = 2.5 ns, 10% to 90%; f = 1 MHz; t = 500 ns
t
R
= t = 2.5 ns, 10% to 90%; f = 1 MHz; t = 500 ns
t
R
F
W
F
W
Figure 3. AC Waveforms
V
CC
3.3 V + 0.3 V
1.5 V
2.7 V
1.5 V
1.5 V
2.5 V + 0.2 V
5.0 V
Symbol
Vmi
V
CC
V
CC
/2
/2
V
CC
V
CC
/2
/2
Vmo
1.5 V
V
HZ
V
OL
+ 0.3 V
V
OL
+ 0.3 V
V
OL
+ 0.15 V
V
OL
+ 0.15 V
V
LZ
V
OH
− 0.3 V
V
OH
− 0.3 V
V
OH
− 0.15 V
V
OH
− 0.15 V
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5
MC74LCX245
V
CC
6 V
OPEN
GND
R
1
PULSE
GENERATOR
DUT
R
T
C
R
L
L
TEST
SWITCH
t
t
, t
Open
PLH PHL
, t
6 V at V = 3.3 ꢀ0.3 V
CC
PZL PLZ
6 V at V = 2.5 ꢀ0.2 V
CC
Open Collector/Drain t
and t
6 V
PLH
PHL
t
, t
GND
PZH PHZ
C = 50 pF at V = 3.3 ꢀ0.3 V or equivalent (includes jig and probe capacitance)
L
CC
C = 30 pF at V = 2.5 ꢀ0.2 V or equivalent (includes jig and probe capacitance)
L
CC
R = R = 500 W or equivalent
L
1
R = Z
of pulse generator (typically 50 W)
T
OUT
Figure 4. Test Circuit
ORDERING INFORMATION
Device
†
Package
Shipping
MC74LCX245DWR2G
SOIC−20
(Pb−Free)
1000 Tape & Reel
38 Units / Rail
MC74LCX245DWG
MC74LCX245DTG
SOIC−20
(Pb−Free)
TSSOP−20
(Pb−Free)
75 Units / Rail
MC74LCX245DTR2G
NLV74LCX245DTR2G*
MC74LCX245MNTWG
TSSOP−20
(Pb−Free)
2500 Tape & Reel
2500 Tape & Reel
3000 Tape & Reel
TSSOP−20
(Pb−Free)
QFN20
(Pb−Free)
†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.
*NLV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP
Capable.
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6
MC74LCX245
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
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7
MC74LCX245
PACKAGE DIMENSIONS
TSSOP−20
CASE 948E−02
ISSUE C
NOTES:
20X K REF
1. DIMENSIONING AND TOLERANCING PER
K
K1
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION:
MILLIMETER.
M
S
S
V
0.10 (0.004)
T
U
S
T U
0.15 (0.006)
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.
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.
J J1
20
11
2X L/2
B
SECTION N−N
L
−U−
PIN 1
IDENT
0.25 (0.010)
N
1
10
M
6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
7. DIMENSION A AND B ARE TO BE
DETERMINED AT DATUM PLANE −W−.
S
0.15 (0.006)
T U
A
−V−
N
MILLIMETERS
INCHES
DIM MIN
MAX
6.60
4.50
1.20
0.15
0.75
MIN
MAX
0.260
0.177
0.047
0.006
0.030
F
A
B
6.40
4.30
---
0.252
0.169
---
DETAIL E
C
D
0.05
0.50
0.002
0.020
F
G
H
0.65 BSC
0.026 BSC
−W−
0.27
0.09
0.09
0.19
0.19
0.37
0.20
0.16
0.30
0.25
0.011
0.004
0.004
0.007
0.007
0.015
0.008
0.006
0.012
0.010
C
J
J1
K
G
D
H
K1
L
DETAIL E
6.40 BSC
0.252 BSC
0
0.100 (0.004)
−T− SEATING
M
0
8
8
_
_
_
_
PLANE
SOLDERING FOOTPRINT
7.06
1
0.65
PITCH
01.36X6
16X
1.26
DIMENSIONS: MILLIMETERS
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8
MC74LCX245
PACKAGE DIMENSIONS
QFN20, 2.5x4.5 MM
CASE 485AA
ISSUE B
NOTES:
D
A
B
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSIONS b APPLIES TO PLATED
TERMINAL AND IS MEASURED BETWEEN
0.25 AND 0.30 MM FROM TERMINAL.
4. COPLANARITY APPLIES TO THE EXPOSED
PAD AS WELL AS THE TERMINALS.
PIN ONE REFERENCE
MILLIMETERS
DIM MIN
MAX
1.00
0.05
A
A1
A3
b
0.80
0.00
E
0.20 REF
0.20
0.30
1.15
D
2.50 BSC
D2
E
0.85
2X
4.50 BSC
0.15
C
0.15
C
E2
e
2.85
3.15
0.50 BSC
2X
K
0.20
0.35
---
0.45
L
C
TOP VIEW
0.10
0.08
A
C
20X
(A3)
SEATING
PLANE
A1
C
SIDE VIEW
D2
e
11
20X L
9
12
e
E2
20X
b
20X
19
2
0.10 C A B
0.05
1
20
C
K
NOTE 3
BOTTOM VIEW
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,
copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. 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
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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
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Phone: 81−3−5817−1050
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Email: orderlit@onsemi.com
For additional information, please contact your local
Sales Representative
MV74LCX245/D
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ONSEMI
MC74LCX257DR2G
Low-Voltage CMOS Quad 2-Input Multiplexer With 5.0 V−Tolerant Inputs and Outputs (3−State, Non−Inverting)
ONSEMI
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