View max1601 datasheet:

19-1085; Rev 1; 10/96 Dual-Channel CardBus and PCMCIA Power Switches with SMBus™ Serial Interface ________________General Description ____________________________Features The MAX1601/MAX1604 DC power-switching ICs con- ¦ Supports Two CardBus Sockets tain a network of low-resistance MOSFET switches that ¦ 1A, 0.08? Max VY VCC Switch (MAX1601 only) deliver selectable VCC and VPP voltages to two 1A, 0.14? Max VX VCC Switch CardBus or PC Card host sockets. Key features include ¦ Soft Switching for Low Inrush Surge Current ultra-low-resistance switches, small packaging, soft- ¦ Overcurrent Protection switching action, and compliance with PCMCIA specifi- ¦ Overcurrent/Thermal-Fault Flag Output cations for 3V/5V switching. 3.3V-only power switching for fast, 32-bit CardBus applic