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MC74LVXC3245DT

Configurable Dual Supply Octal Transceiver with 3−State Outputs for 3 V Systems

Motorola => Freescale 

MC74LVXC3245

SD(0:15)

PCMCIA 2.0

JEIDA 4.1

COMPATIBLE

CONTROLLER

POWER

SWITCHES

SLOT 0

SLOT 1

5V

3V

VCC VCC

SD(0:15)

VCCA

VCCB

LVXC3245

LVXC3245

SLOT 0

LVXC3245

LVXC3245

SLOT 1

Figure 3. Block Diagram

OPTIONAL

Configurable I/O Application for PCMCIA Cards

The 74LVXC3245 is a dual–supply device well suited for

PCMCIA configurable I/O applications. The LVXC3245

consumes less than 1mW of quiescent power in all modes of

operation, making it ideal for low power notebook designs.

The LVXC3245 meets all PCMCIA I/O voltage requirements

at 5V and 3.3V operation. By tying the VCCB pin to the card

voltage supply, the PCMCIA card will always have rail–to–rail

output swings, maximizing the reliability of the interface.

The VCCA pin must always be tied to a 3.3V power supply.

This voltage connection provides internal references needed

to account for variations in VCCB. When connected as in the

figure above, the LVXC3245 meets all the voltage and

current requirements of the ISA bus standard (IEEE P996).

MOTOROLA

6

LVX Data — Low–Voltage CMOS Logic

BR1492 — Rev 0

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