Power Switch 24-Pin SSOP

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/high-impedance power outputs for flash VPP programming, level shifters for power MOSFET control of two separate +3.3V/+5V supplies, and two VPP 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 edge-triggered registers for connection to the CPU data bus. The MAX780B has all the features of the MAX780A but omits the reference and VPP 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.

• SSOP Circuit Fits in 0.09in²
• Smallest Complete Analog Controller for Two PCMCIA (Release 2.0/JEIDA 4.1) PC Card Sockets
• Dual V_CC Contols and V_PP Outputs
• Logic-Compatible with Industry-Standard PCMCIA Digital Controllers:
  • Intel 82365SL_DF
  • Fujitsu MB86301
  • Chips and Technology F8680
  • Cirrus Logic CL-PD6720

0V/+5V/+12V/High-Impedance V_PP Outputs

Internal 1.6? V_PP Power Switches

Dual Voltage 3.3V/5V V_CC Operation

V_PP Power-Ready Status Signals

130µA Quiescent Supply Current (3.5µA in Shutdown)

Break-Before-Make Switching