General Description

The AS1907/AS1908/AS1909 microprocessor supervisory circuits are ideal for monitoring the supply voltage of digital systems and microprocessors

Key Features

■3 Output Types: Push/Pull RESET, Push Pull RESETN, and Open Drain RESETN

■Reset Threshold Range: 1.6 to 2.5V (~100mV increments)

■RESET/RESETN:

- Valid to VCC = 0.7V (AS1907 and AS1908)

- Valid to VCC = 1.0V (AS1909)

■Reset Pulse Widths: 1, 20, and 100ms

■Supply Voltage Range: +0.7 to +3.6V

■Supply Current Range: 2.6 to 7.0µA

■Power Supply Transient Immunity

■Requires No External Components

■Operating Temperature Range: -40 to +125ºC

■3-pin SOT23 Packag

Applications

The devices are ideal for use in cordless and mobile phones, MP3 players, CD and DVD players, PDAs, handheld computers, digital cameras, hard drives, and any other application where power supply supervisory control is required.