Dual-Slot PCMCIA Analog Power Controller

________________________________________________________________ Maxim Integrated Products

1

Call toll free 1-800-998-8800 for free samples or literature.

Ordering Information continued on last page.

* Contact factory for dice specifications.

19-0125; Rev. 1; 8/93

_______________General Description

The MAX780A provides the power switching and status

signals necessary to control two Personal Computer

Memory Card International Association (PCMCIA)

Release 2.0 card slots. The MAX780A, used in conjunc-

tion with a PC Card Interface Digital Controller, forms a

complete, minimum component count PCMCIA interface

for palmtop and notebook computers.

The MAX780A incorporates two 0V/+5V/+12V/high-

level shifters for power MOSFET control of two sepa-

status signals. The MAX780A may be directly con-

nected to the control outputs from a PCMCIA digital

controller, or may be configured to use internal edge-

triggered registers for connection to the CPU data bus.

The MAX780B has all the features of the MAX780A but

MAX780C has all the features of the MAX780A but

omits the registers for the digital inputs. The MAX780D

digital input registers.

PART

TEMP. RANGE

PIN-PACKAGE

MAX780ACNG

24 Narrow Plastic DIP

MAX780ACAG

24 SSOP

MAX780AC/D

0°C to +70°C

Dice*

MAX780AENG

24 Narrow Plastic DIP

MAX780AEAG

-40°C to +85°C

24 SSOP

0°C to +70°C

0°C to +70°C

-40°C to +85°C

___________________________Features

o SSOP Circuit Fits in 0.09in2

o Smallest Complete Analog Controller for Two

PCMCIA (Release 2.0/JEIDA 4.1) PC Card Sockets

o Logic-Compatible with Industry-Standard

PCMCIA Digital Controllers:

Intel 82365SL_DF

Fujitsu MB86301

Chips and Technology F8680

Cirrus Logic CL-PD6720

o Internal 1.6

o 130µA Quiescent Supply Current

(3.5µA in Shutdown)

o Break-Before-Make Switching

______________Ordering Information

_______________________Applications

Notebook and Palmtop Computers

Personal Organizers

Digital Cameras

Handiterminals

Bar-Code Readers

Part

Number

Reference &

Indicators

Registers for

Direct

Connection to

CPU Data Bus

Switches &

Level Shifters

Switching

MAX780A

MAX780B

MAX780C

MAX780D

+12V

+5V

+3.3V

VPPIN

VCCIN

ADRV3

ADRV5

+5V

+5V

BDRV3

BDRV5

AVPP

BVPP

SHDN

DIGITAL

I/O

REF

C1

C2

WR

GND

PCMCIA SLOT

#2

PCMCIA SLOT

#1

PCMCIA

DIGITAL

CONTROLLER

MAX780A

__________Typical Operating Circuit