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74LVXC3245 — 8-Bit Dual Supply Configurable Voltage Interface Transceiver with 3-STATE Outputs
February 2009
74LVXC3245
8-Bit Dual Supply Configurable Voltage Interface
Transceiver with 3-STATE Outputs
Features
■
Bidirectional interface between 3V 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
proprietary
EMI reduction circuitry
■
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
General Description
The LVXC3245 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 3V supply level. The A Port is a dedicated 3V
port. The V
CCB
pin accepts a 3V-to-5V supply level. The B
Port is configured to track the V
CCB
supply level respec-
tively. 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. The A Port should interface with a 3V 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.
Ordering Code:
Order Number
74LVXC3245WM
74LVXC3245QSC
74LVXC3245MTC
Package Number
M24B
MQA24
MTC24
Package Description
224-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
stm32/stm8
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