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LTC1314/LTC1315

PCMCIA Switching Matrix

with Built-In N-Channel

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FEATURE

DESCRIPTIO

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Output Current Capability: 120mA

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External 12V Regulator Can Be Shut Down

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Break-Before-Make Switching

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0.1

µA Quiescent Current in Hi-Z or 0V Mode

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Logic Compatible with Standard PCMCIA Controllers

The LTC

necessary to control Personal Computer Memory Card

International Association (PCMCIA) Release 2.0 card slots.

When used in conjunction with a PC card interface control-

ler, these devices form a complete minimum component

count interface for palmtop, pen-based and notebook

computers.

The LTC1314/LTC1315 provide 0V, 3.3V, 5V, 12V and

Hi-Z power output for flash VPP programming. A built-in

charge pump produces 12V of gate drive for inexpensive

digital inputs are TTL compatible and interface directly

with industry standard PC card interface controllers.

The LTC1314 is available in 14-pin SO and the LTC1315 in

24-pin SSOP.

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Notebook Computers

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Palmtop Computers

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Pen-Based Computers

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Handi-Terminals

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Bar-Code Readers

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APPLICATI

, LTC and LT are registered trademarks of Linear Technology Corporation.

Linear Technology PCMCIA Product Family

DEVICE

DESCRIPTION

PACKAGE

LT1312

SINGLE PCMCIA VPP DRIVER/REGULATOR

8-PIN SO

LT1313

DUAL PCMCIA VPP DRIVER/REGULATOR

16-PIN SO*

LTC

14-PIN SO

LTC1315

DUAL PCMCIA SWITCH MATRIX

24-PIN SSOP

LTC1470

8-PIN SO

LTC1472

*NARROW BODY

EN0

EN1

DRV3

DRV5

0

0

X

X

GND

X

X

01

X

X

XX

1

0

X

X

XX

1

1

X

X

Hi-Z

X

X

XX

1

0

X

1

0

XX

0

1

X

0

1

XX

0

0

X

0

0

XX

1

1

X

0

0

X = DON’T CARE

LTC1314 Truth Table

Typical PCMCIA Single Slot Driver

+

SHDN

3.3V OR 5V

VPP1

VPP2

LTC1314 • TA01

LTC1314

5V

12V

PCMCIA

CARD SLOT

CONTROLLER

EN0

EN1

DRV5

DRV3

GND

5V

3.3V

PCMCIA

CARD SLOT

+

1

µF

0.1

µF

STEP-UP

REGULATOR

LT

SHDN