SA56600-42 Description
The SA56600-42 is designed to protect SRAM data in puter systems during periods of sagging power supply voltages and power outages. When the power supply voltage drops to typically 4.2 V, the CS output goes to a logic LOW state pulling CE to a LOW state, disabling the SRAM device. In addition, a reset logic LOW is asserted for system use.
SA56600-42 Key Features
- Supply switching at 4.2 VDC threshold (falling supply)
- RESET output
- Both CS and CS outputs available for SRAM control
- During battery back-up operation
- Low supply current (0.3 µA typical)
- Low input/output voltage drop (0.3 V typical at 100 µA)
- Low reverse current leakage (0.1 µA max.) During normal operation
- Low input/output voltage drop (0.2 V typical at 50 mA)
- 4.8 V typical output voltage at 50 mA with VCC = 5.0 V
- Restoration of main supply operation at 3.3 V