74LVXC4245QSCX Ver la hoja de datos (PDF) - Fairchild Semiconductor

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74LVXC4245QSCX

8-Bit Dual Supply Configurable Voltage Interface Transceiver with 3-STATE Outputs

Fairchild Semiconductor 

Configurable I/O Application for PCMCIA Cards

Block Diagram

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 1 mW of quiescent power in all modes of operation.

The LVXC4245 meets all PCMCIA I/O voltage require-

ments at 5V and 3.3V operation. By tying VCCB of the

LVXC4245 to the card voltage supply, the PCMCIA card

will always experience rail to rail output swings, maximizing

the reliability of the interface.

The VCCA pin on the LVXC4245 must always be tied to a

5V power supply. This voltage connection provides internal

references needed to account for variations in VCCB. When

connected as in the block diagram above, the LVXC4245

meets all the voltage and current requirements of the ISA

bus standard (IEEE P996).

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