Download Datasheets TC1279 Device 
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Home - Analog & Interface Products - Power Management - CPU/System Supervisors - TC1279 Device, download datasheet

Download Datasheets TC1279 Device

The TC1278 and TC1279 are cost-effective system supervisor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required. The reset output is driven active within 5sec of VCC falling through the reset voltage threshold. Reset is maintained active for a minimum of 250msec after VCC rises above the reset threshold. The TC1278 has an active-high RESET output while the TC1279 has an active-low RESET output, and both devices have an open drain output stage. The output is valid down to VCC = 1.2V. Both devices are available in a 3-Pin SOT-23 package.

Datasheet and Other Documentation

Detailed Content

Lit. Number



TC1278/79 Datasheet


Download TC1278/79 Datasheet


In Production

Specification Chart

Vcc Range (V)

Reset Voltages

Reset Type


Min. Reset Pulse Width (ms)

Typical Supply Current (A)

1.2 to 5.5


Active low

Open Drain



Additional Features

Precision VCC Monitor for 5.0V Systems
100msec Minimum RESET, RESET Output Duration
Output Valid to VCC = 1.2V
VCC Transient Immunity
No External Components

Package Options

3 SOT-23B(OT), 2008-2015 - download datasheets