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參數(shù)資料
| 型號： | MC74LVX245MR2 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | LV/LV-A/LVX/H SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | LEAD FREE, EIAJ, SO-20 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 96K |
| 代理商： | MC74LVX245MR2 |
Semiconductor Components Industries, LLC, 2005
March, 2005 Rev. 3
1
Publication Order Number:
MC74LVX245/D
MC74LVX245
Octal Bus Transceiver
With 5 VTolerant Inputs
The MC74LVX245 is an advanced high speed CMOS octal bus
transceiver.
It is intended for twoway 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.
Features
High Speed: t
PD = 4.7 ns (Typ) at VCC = 3.3 V
Low Power Dissipation: I
CC = 4
mA (Max) at TA = 25°C
Power Down Protection Provided on Inputs
Balanced Propagation Delays
Low Noise: V
OLP = 0.8 V (Max)
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
PbFree Packages are Available*
Application Notes
Do not force a signal on an I/O pin when it is an active output,
damage may occur
All floating (high impedance) input or I/O pins must be fixed by
means of pullup or pulldown resistors or bus terminator ICs
A parasitic diode is formed between the bus and V
CC terminals.
Therefore, the LVX245 cannot be used to interface 5.0 V to 3.0 V
systems directly
Figure 1. 20Lead Pinout (Top View)
19
20
18
17
16
15
14
2
1
34567
VCC
13
8
12
9
11
10
OE
B0
B1
B2
B3
B4
B5
B6
B7
T/R
A0
A1
A2
A3
A4
A5
A6
A7
GND
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
A
= Assembly Location
WL, L
= Wafer Lot
Y, YY
= Year
W, WW = Work Week
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
MARKING
DIAGRAMS
20
1
20
SOIC20
DW SUFFIX
CASE 751D
LVX245
AWLYYWW
LVX
245
ALYW
TSSOP20
DT SUFFIX
CASE 948E
SOEIAJ20
M SUFFIX
CASE 967
74LVX245
AWLYWW
1
20
1
20
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| MC74LVX257D | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2-3.6V Quad 3-State RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| MC74LVX257DG | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2-3.6V Quad 3-State 2-Channel RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| MC74LVX257DR2 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2-3.6V Quad 3-State RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| MC74LVX257DR2G | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2-3.6V Quad 3-State 2-Channel RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| MC74LVX257DT | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2-3.6V Quad 3-State RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
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