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MIC2558

Micrel Semiconductor
Part Number MIC2558
Manufacturer Micrel Semiconductor
Description PCMCIA Dual Card Socket VPP Switching Matrix
Published Mar 26, 2005
Detailed Description MIC2558 Micrel MIC2558 PCMCIA Dual Card Socket VPP Switching Matrix General Description The MIC2558 Dual VPP Matrix s...
Datasheet PDF File MIC2558 PDF File

MIC2558
MIC2558

Overview
MIC2558 Micrel MIC2558 PCMCIA Dual Card Socket VPP Switching Matrix General Description The MIC2558 Dual VPP Matrix switches the four voltages required by PCMCIA (Personal Computer Memory Card International Association) card VPP1 and VPP2 Pins.
The MIC2558 provides selectable 0V, 3.
3V, 5.
0V, or 12.
0V (± 5%) from the system power supply to VPP1 and VPP2.
Output voltage is selected by two digital inputs per VPP pin.
Output current ranges up to 120mA.
Four output states, VPP, VCC, high impedance, and active logic low are available, and VPP1 is independent of VPP2.
An auxiliary control input determines whether the high impedance (open) state or low logic state is asserted.
In standby mode or full operation, the device draws very little quiescent current, typically less than 1µA.
The MIC2558 is available in a 14-pin SOIC and a 14-pin plastic DIP.
Features • • • • • • • • • • Complete PCMCIA VPP Switch Matrix in a Single IC Dual Matrix allows independent VPP1 and VPP2 Digital Selection of 0V, VCC, VPP, or High Impedance Output No VPPOUT Overshoot or Switching Transients Break-Before-Make Switching Ultra Low Power Consumption 120mA V PP (12V) Output Current Optional Active Source Clamp for Zero Volt Condition 3.
3V or 5V Supply Operation 14-Pin SOIC Package Part Number Temperature Range –40°C to +85°C –40°C to +85°C Package 14-pin SOIC 14-SO Tape & Reel* Ordering Information MIC2558BM MIC2558BM T&R Applications • • PCMCIA VPP Pin Voltage Switch Power Supply Management * 2,500 Parts per reel.
Typical Application VPP IN VCC +12V +3.
3V or +5V VDD +5V Pin Configuration VPP OUT1 NC +VCC1 VPP IN +VCC2 GND VPP OUT2 14 2 13 VDD Hi-Z/Low1 EN01 EN11 Hi-Z/Low2 EN02 EN12 0.
1µF VPP OUT 1 2 14 13 3 12 MIC2558 4 11 5 6 7 10 9 8 0.
1µF 1µF 1µF 3 12 MIC2558 4 11 5 6 7 10 9 8 Hi-Z/ Low 1 Control EN01 EN11 Hi-Z/ Low 2 Control EN02 EN12 VPP OUT 2 0.
1µF EN1 0 0 0 1 1 EN0 Hi-Z/Low VPP OUT 0 0 1 0 1 0 1 x x x 0V, (Sink current) Hi-Z (No Connect) V V CC PP (3.
3V or 5.
0V) Hi-Z...


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