MC74LVX245 データシートの表示（PDF） - ON Semiconductor
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MC74LVX245 Datasheet PDF : 8 Pages
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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.
Features
• High Speed: tPD = 4.7 ns (Typ) at VCC = 3.3 V
• Low Power Dissipation: ICC = 4 mA (Max) at TA = 25°C
• Power Down Protection Provided on Inputs
• Balanced Propagation Delays
• Low Noise: VOLP = 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
• Pb−Free 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 VCC terminals.
Therefore, the LVX245 cannot be used to interface 5.0 V to 3.0 V
systems directly
VCC OE B0 B1 B2 B3 B4 B5 B6 B7
20 19 18 17 16 15 14 13 12 11
http://onsemi.com
MARKING
DIAGRAMS
20
1
20
SOIC−20
DW SUFFIX
CASE 751D
1
LVX245
AWLYYWW
20
1
20
TSSOP−20
DT SUFFIX
CASE 948E
1
LVX
245
ALYW
20
1
20
SOEIAJ−20
M SUFFIX
CASE 967
1
74LVX245
AWLYWW
A
= Assembly Location
WL, L = Wafer Lot
Y, YY = Year
W, WW = Work Week
1 2 3 4 5 6 7 8 9 10
T/R A0 A1 A2 A3 A4 A5 A6 A7 GND
Figure 1. 20−Lead Pinout (Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
*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
March, 2005 − Rev. 3
Publication Order Number:
MC74LVX245/D
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