Configurable Dual Supply Octal Transceiver

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Overview

The 74LVXC3245 is a 24-pin dual-supply, octal configurable voltage interface transceiver especially well suited for PCMCIA and other real time configurable I/O applications. The VCCA pin accepts a 3V supply level; the A port is a dedicated 3V port. The VCCB pin accepts a 3V-to-5V supply level. The B port is configured to track the VCCB supply level. A 5V level on the VCCB pin will configure the I/O pins at a 5V level and a 3V VCCB will configure the I/O pins at a 3V level. The A port interfaces with a 3V host system and the B port to the card slots. This device will allow the VCCB 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. The Transmit/Receive (T/R) input determines the direction of data flow. Transmit (active-High) enables data from the A port to B port. Receive (active-Low) enables data from the B port to the A port.

  • Bidirectional Interface Between 3V and 3V/5V Buses
  • Control Inputs Compatible with TTL Level
  • Outputs Source/Sink Up to 24mA
  • Guaranteed Simultaneous Switching Noise Level and Dynamic Threshold Performance
  • Available in SOIC and TSSOP Packages
  • Flexible VCCB Operating Range
  • Allows B Port and VCCB to Float Simultaneously When OE Is High
  • Functionally Compatible with the 74 Series 245 PIN Pins OE T/R A0-A7 B0-B7
  • Pb-Free Packages are Available*

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MC74LVXC3245DTG

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CAD Model

Pb

A

H

P

TSSOP-24

1

260

TUBE

62

N

8

3-State

2.3

3.6

9

24

Price N/A

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MC74LVXC3245DTRG

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Active

CAD Model

Pb

A

H

P

TSSOP-24

1

260

REEL

2500

Y

8

3-State

2.3

3.6

9

24

$0.5608

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MC74LVXC3245DWRG

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Last Shipments

CAD Model

Pb

A

H

P

SOIC−24 WB

3

260

REEL

1000

N

8

3-State

2.3

3.6

9

24

Price N/A

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