Power-On Reset Generator
Automatic Reset Generation After Voltage Drop
Low Standby Current . . . 20 µA
Reset Output Defined When VCC Exceeds 1 V
Complementary Reset Output
True and Complementary Reset Outputs Precision
Threshold Voltage 4.55 V ±120 mV
High Output Sink Capability . . . 20 mA
Comparator Hysteresis Prevents Erratic Resets
Dscription
The TL7757 is a supply-voltage supervisor designed for use in microcomputer and microprocessor systems. The supervisor monitors the supply voltage for undervoltage conditions.
During power up, when the supply voltage, VCC, attains a value approaching 1 V, the RESET output becomes active (low) to prevent undefined operation.
If the supply voltage drops below threshold voltage level (VIT–), the RESET output goes to the active (low) level until the supply undervoltage fault condition is eliminated.
The TL7757C is characterized for operation from 0°C to 70°C. The TL7757I is characterized for operation from –40°C to 85°C.
ABSOLUTE MAXIMUM RATINGS(1) |
Supply voltage, VCC 1 7 V High-level output voltage, VOH 15 V Low-level output current, IOL 20 mA Operating free air temperature TA 0 --70 °C Operating free-air temperature, TA –40- 85°C |
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