MC74LVX4245DTR2G 查看數據表（PDF） - ON Semiconductor
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MC74LVX4245DTR2G Datasheet PDF : 10 Pages
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MC74LVX4245
Dual Supply Octal
Translating Transceiver
with 3−State Outputs
The 74LVX4245 is a 24−pin dual−supply, octal translating
transceiver that is designed to interface between a 5.0 V bus and a 3.0 V
bus in a mixed 3.0 V / 5.0 V supply environment such as laptop
computers using a 3.3 V CPU and 5.0 V LCD display. The A port
interfaces with the 5V bus; the B port interfaces with the 3.0 V bus.
The Transmit/Receive (T/R) input determines the direction of data
flow. Transmit (active−High) enables data from the A port to the B
port. Receive (active−Low) enables data from the B port to the A port.
The Output Enable (OE) input, when High, disables both A and B
ports by placing them in 3−State.
Features
• Bi−directional Interface Between 5.0 V and 3.0 V Buses
• Control Inputs Compatible with TTL Level
• 5.0 V Data Flow at A Port and 3.0 V Data Flow at B Port
• Outputs Source/Sink 24 mA at 5.0 V Bus and 12 mA at 3.0 V Bus
• Guaranteed Simultaneous Switching Noise Level and Dynamic
Threshold Performance
• Available in SOIC and TSSOP Packages
• Functionally Compatible with the 74 Series 245
• These Devices are Pb−Free and are RoHS Compliant
VCCB VCCB OE B0 B1 B2 B3 B4 B5 B6 B7 GND
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
VCCA T/R A0 A1 A2 A3 A4 A5 A6 A7 GND GND
Figure 1. 24−Lead Pinout
(Top View)
http://onsemi.com
24
1
MARKING
DIAGRAMS
24
SOIC−24
DW SUFFIX
CASE 751E
LVX4245
AWLYYWWG
1
24
24
1
TSSOP−24
DT SUFFIX
CASE 948H
LVX
4245G
ALYW
1
LVX4245
A
WL, L
Y
WW, W
G or G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
PIN NAMES
Pins
Function
OE
T/R
A0−A7
B0−B7
Output Enable Input
Transmit/Receive Input
Side A 3−State Inputs or 3−State
Outputs
Side B 3−State Inputs or 3−State
Outputs
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
© Semiconductor Components Industries, LLC, 2011
1
May, 2011 − Rev. 5
Publication Order Number:
MC74LVX4245/D
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