19-0125; Rev. 1; 8/93
Dual-Slot PCMCIA Analog Power Controller
___________________________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 Dual VCC Contols and VPP Outputs
o Logic-Compatible with Industry-Standard
PCMCIA Digital Controllers:
Intel 82365SL_DF
Fujitsu MB86301
Chips and Technology F8680
Cirrus Logic CL-PD6720
o 0V/+5V/+12V/High-Impedance VPP Outputs
o Internal 1.6Ω VPP Power Switches
o Dual Voltage 3.3V/5V VCC Operation
o VPP Power-Ready Status Signals
o 130µA Quiescent Supply Current
(3.5µA in Shutdown)
o Break-Before-Make Switching
Part
Number
Reference &
VPP Status
Indicators
Registers for
Direct
Connection to
CPU Data Bus
Dual VPP
Switches &
Level Shifters
for VCC
Switching
______________Ordering Information
PART
TEMP. RANGE
MAX780ACNG
0°C to +70°C
0°C to +70°C
MAX780ACAG
MAX780AC/D
0°C to +70°C
MAX780AENG -40°C to +85°C
MAX780AEAG -40°C to +85°C
PIN-PACKAGE
24 Narrow Plastic DIP
24 SSOP
Dice*
24 Narrow Plastic DIP
24 SSOP
Ordering Information continued on last page.
* Contact factory for dice specifications.
MAX780A
MAX780B
__________Typical Operating Circuit
MAX780C
+3.3V
MAX780D
+5V
+12V
VPPIN
_______________________Applications
VCCIN
ADRV3
+5V
MAX780A
Notebook and Palmtop Computers
ADRV5
Personal Organizers
BDRV3
VCC
PCMCIA SLOT
VPP
#1
Digital Cameras
Handiterminals
Bar-Code Readers
SHDN
BDRV5
AVPP
REF
+5V
VCC
PCMCIA SLOT
VPP
#2
BVPP
C1
C2
DIGITAL
I/O
WR
PCMCIA
DIGITAL
CONTROLLER
GND
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
MAX780
_______________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 conjunction 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/highimpedance power outputs for flash VPP programming,
level shifters for power MOSFET control of two separate +3.3V/+5V supplies, and two V PP power-ready
status signals. The MAX780A may be directly connected to the control outputs from a PCMCIA digital
controller, or may be configured to use internal edgetriggered registers for connection to the CPU data bus.
The MAX780B has all the features of the MAX780A but
omits the reference and V PP valid indicators. The
MAX780C has all the features of the MAX780A but
omits the registers for the digital inputs. The MAX780D
omits the reference, the VPP valid indicators, and the
digital input registers.
