74lvxc4245qscx-nl Fairchild Semiconductor, 74lvxc4245qscx-nl Datasheet

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74lvxc4245qscx-nl

Manufacturer Part Number
74lvxc4245qscx-nl
Description
74lvxc4245 8-bit Dual Supply Configurable Voltage Interface Transceiver With 3-state Outputs
Manufacturer
Fairchild Semiconductor
Datasheet
1.74LVXC4245QSCX-NL.pdf (8 pages)
© 2003 Fairchild Semiconductor Corporation
74LVXC4245WM
74LVXC4245QSC
74LVXC4245MTC
74LVXC4245
8-Bit Dual Supply Configurable Voltage Interface
Transceiver with 3-STATE Outputs
General Description
The LVXC4245 is a 24-pin dual-supply, 8-bit configurable
voltage interface transceiver suited for PCMCIA and other
real time configurable I/O applications. The V
accepts a 5V supply level. The “A” Port is a dedicated 5V
port. The V
“B” Port is configured to track the V
respectively. A 5V level on the V
I/O pins at a 5V level and a 3V V
pins at a 3V level. This device will allow the V
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.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
Order Number
Pin Names
A
B
T/R
OE
0
0
–A
–B
7
7
CCB
pin accepts a 3V-to-5V supply level. The
Output Enable Input
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
Package Number
MQA24
MTC24
M24B
Description
CC
CC
pin will configure the
will configure the I/O
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide
24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
CCB
supply level
CCB
DS012009
CCA
voltage
pin
Features
Connection Diagram
Bidirectional interface between 5V and 3V-to-5V buses
Control inputs compatible with TTL level
Outputs source/sink up to 24 mA
Guaranteed simultaneous switching noise level and
dynamic threshold performance
Implements patented EMI reduction circuitry
Flexible V
Allows B Port and V
is HIGH
Functionally compatible with the 74 series 245
Package Description
CCB
operating range
CCB
to float simultaneously when OE
February 1994
Revised October 2003
www.fairchildsemi.com

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74lvxc4245qscx-nl Summary of contents

Page 1

... Side A Inputs or 3-STATE Outputs –B Side B Inputs or 3-STATE Outputs 0 7 © 2003 Fairchild Semiconductor Corporation Features Bidirectional interface between 5V and 3V-to-5V buses Control inputs compatible with TTL level pin CCA Outputs source/sink Guaranteed simultaneous switching noise level and dynamic threshold performance ...

Page 2

Truth Table HIGH Voltage Level L LOW Voltage Level X Immaterial Logic Diagram www.fairchildsemi.com Inputs Outputs T/R L Bus B Data to Bus A H Bus A Data to Bus B X HIGH-Z State 2 ...

Page 3

Absolute Maximum Ratings Supply Voltage ( CCA CCB DC Input Voltage ( OE, T/R 0. Input/Output Voltage ( ...

Page 4

DC Electrical Characteristics V CCA Symbol Parameter (V) I Maximum 3-STATE 5.5 OZA Output Leakage @ A 5 Maximum 3-STATE 5.5 OZB Output Leakage @ B 5 Maximum All Inputs 5 /Input B 5.5 ...

Page 5

AC Electrical Characteristics V CCA V CCB Symbol Parameter Min Typ (Note 6) t Propagation 1.0 4.9 PHL t Delay 1.0 4.0 PLH t Propagation 1.0 4.7 PHL t Delay ...

Page 6

Configurable I/O Application for PCMCIA Cards The LVXC4245 is a 24-pin dual supply device well suited for PCMCIA configurable I/O applications. Ideal for low power notebook designs, the LVXC4245 consumes less than quiescent power in all modes ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide Package Number M24B Package Number MQA24 7 www.fairchildsemi.com ...

Page 8

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves ...

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