Power-On Reset Generator
Automatic Reset Generation After Voltage
Drop
Low Standby Current . . . 20 μA
RESET Output Defined When VCC
Exceeds 1 V
Precision Threshold Voltage
4.55 V ±120 mV
High Output Sink Capability . . . 20 mA
Comparator Hysteresis Prevents Erratic
Resets

description/ordering information
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.