MC74LVXC3245 Datasheet, PDF (1/10 Pages) Motorola, Inc – LOW-VOLTAGE CMOS

MC74LVXC3245
Configurable Dual Supply
Octal Transceiver
with 3−State Outputs for 3 V Systems
The 74LVXC3245 is a 24−pin dual−supply, octal configurable
voltage interface transceiver especially well suited for PCMCIA and
other real time configurable I/O applications. The V_CCA pin accepts a
3.0 V supply level; the A port is a dedicated 3.0 V port. The V_CCB pin
accepts a 3.0 V−to−5.0 V supply level. The B port is configured to
track the V_CCB supply level. A 5.0 V level on the V_CCB pin will
configure the I/O pins at a 5.0 V level and a 3.0 V V_CCB will configure
the I/O pins at a 3.0 V level. The A port interfaces with a 3.0 V host
system and the B port to the card slots. This device will allow the
V_CCB voltage source pin and I/O pins on the B port to float when OE is
High. This feature is necessary to buffer data to and from a PCMCIA
socket that permits PCMCIA cards to be inserted and removed during
normal operation. The Transmit/Receive (T/R) input determines the
direction of data flow. Transmit (active−High) enables data from the A
port to B port. Receive (active−Low) enables data from the B port to
the A port.
Features
• Bidirectional Interface Between 3.0 V and 3.0 V/5.0 V Buses
• Control Inputs Compatible with TTL Level
• Outputs Source/Sink Up to 24 mA
• Guaranteed Simultaneous Switching Noise Level and Dynamic
Threshold Performance
• Available in SOIC and TSSOP Packages
• Flexible V_CCB Operating Range
• Allows B Port and V_CCB to Float Simultaneously When OE is High
• Functionally Compatible With the 74 Series 245
• Pb−Free Packages are Available*
http://onsemi.com
MARKING
DIAGRAMS
24
1
24
1
24
SOIC−24
DW SUFFIX
CASE 751E
LVX
3245
AWLYYWW
1
TSSOP−24
DT SUFFIX
CASE 948H
24
LVXC3245
AWLYYWW
1
A
= Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
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 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. 4
Publication Order Number:
MC74LVXC3245/D