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MC74LVX4245 Datasheet, PDF (1/10 Pages) Motorola, Inc – LOW-VOLTAGE CMOS | |||
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MC74LVX4245
Dual Supply Octal
Translating Transceiver
with 3âState Outputs
The 74LVX4245 is a 24âpin dualâsupply, 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 (activeâHigh) enables data from the A port to the B
port. Receive (activeâLow) 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 3âState.
Features
⢠Biâdirectional 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
⢠PbâFree Packages are Available*
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. 24âLead Pinout
(Top View)
http://onsemi.com
MARKING
DIAGRAMS
24
1
24
1
24
SOICâ24
DW SUFFIX
CASE 751E
LVX
4245
AWLYYWW
1
TSSOPâ24
DT SUFFIX
CASE 948H
24
LVXC4245
AWLYYWW
1
A
= Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
PIN NAMES
Pins
Function
OE
T/R
A0âA7
B0âB7
Output Enable Input
Transmit/Receive Input
Side A 3âState Inputs or 3âState
Outputs
Side B 3âState Inputs or 3âState
Outputs
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
*For additional information on our PbâFree 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 â Rev. 4
Publication Order Number:
MC74LVX4245/D
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