19-0125; Rev. 1; 8/93
Du a l-S lo t P CMCIA An a lo g P o w e r Co n t ro lle r
MAX780
_______________Ge n e ra l De s c rip t io n
___________________________Fe a t u re s
♦ SSOP Circuit Fits in 0.09in
2
The MAX780A provides the power switching and status
signals necessary to control two Personal Computer
Me mory Ca rd Inte rna tiona l As s oc ia tion (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.
♦ Smallest Complete Analog Controller for Two
PCMCIA (Release 2.0/JEIDA 4.1) PC Card Sockets
♦ Dual V
Contols and V Outputs
PP
CC
♦ Logic-Compatible with Industry-Standard
PCMCIA Digital Controllers:
Intel 82365SL_DF
The MAX780A incorporates two 0V/+5V/+12V/high-
Fujitsu MB86301
Chips and Technology F8680
Cirrus Logic CL-PD6720
impedance power outputs for flash V programming,
PP
level shifters for power MOSFET control of two sepa-
rate +3.3V/+5V supplies, and two V power-ready
PP
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.
♦ 0V/+5V/+12V/High-Impedance V Outputs
PP
♦ Internal 1.6Ω V Power Switches
PP
♦ Dual Voltage 3.3V/5V V
Operation
CC
♦ V Power-Ready Status Signals
PP
The MAX780B has all the features of the MAX780A but
omits the reference and V valid indicators. The
MAX780C has all the features of the MAX780A but
omits the registers for the digital inputs. The MAX780D
♦ 130µA Quiescent Supply Current
(3.5µA in Shutdown)
PP
♦ Break-Before-Make Switching
omits the reference, the V valid indicators, and the
PP
______________Ord e rin g In fo rm a t io n
digital input registers.
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
24 Narrow Plastic DIP
24 SSOP
MAX780ACNG
MAX780ACAG
MAX780AC/D
Dual V
Switches &
Level Shifters
PP
Registers for
Direct
Connection to
CPU Data Bus
Reference &
Status
Indicators
Dice*
Part
Number
V
PP
MAX780AENG -40°C to +85°C
MAX780AEAG -40°C to +85°C
24 Narrow Plastic DIP
24 SSOP
for V
CC
Switching
Ord e rin g In fo rm a t io n c o n t in u e d o n la s t p a g e .
* Contact factory for dice specifications.
✔
✔
✔
✔
MAX780A
MAX780B
MAX780C
MAX780D
✔
✔
✔
__________Typ ic a l Op e ra t in g Circ u it
✔
+3.3V
+12V
+5V
V
CC
VCCIN
ADRV3
VPPIN
PCMCIA SLOT
V
PP
#1
_______________________Ap p lic a t io n s
Notebook and Palmtop Computers
Personal Organizers
+5V
MAX780A
ADRV5
BDRV3
V
CC
Digital Cameras
PCMCIA SLOT
SHDN
BDRV5
AVPP
+5V
V
PP
#2
Handiterminals
REF
C1
BVPP
Bar-Code Readers
PCMCIA
DIGITAL
CONTROLLER
C2
DIGITAL
I/O
WR
GND
________________________________________________________________ Maxim Integrated Products
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .