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74LVXC4245 8-Bit Dual Supply Configurable Voltage Interface Transceiver with 3-STATE Outputs
February 1994
Revised October 2003
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
CCA
pin
accepts a 5V supply level. The “A” Port is a dedicated 5V
port. The V
CCB
pin accepts a 3V-to-5V supply level. The
“B” Port is configured to track the V
CCB
supply level
respectively. A 5V level on the V
CC
pin will configure the
I/O pins at a 5V level and a 3V V
CC
will configure the I/O
pins at a 3V level. 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.
Features
s
Bidirectional interface between 5V and 3V-to-5V buses
s
Control inputs compatible with TTL level
s
Outputs source/sink up to 24 mA
s
Guaranteed simultaneous switching noise level and
dynamic threshold performance
s
Implements patented EMI reduction circuitry
s
Flexible V
CCB
operating range
s
Allows B Port and V
CCB
to float simultaneously when OE
is HIGH
s
Functionally compatible with the 74 series 245
Ordering Code:
Order Number
74LVXC4245WM
74LVXC4245QSC
74LVXC4245MTC
Package Number
M24B
MQA24
MTC24
Package Description
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
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