1 Features
• 3-Pin SOT23 Package
• Supply Current: 9 μA (Typical)
• Precision Supply Voltage Monitor:
2.5 V, 3 V, 3.3 V, 5 V
• Power-On Reset Generator with
Fixed Delay Time of 200 ms
• Pin-for-Pin Compatible with MAX803
• Temperature Range: –40°C to +125°C
• Open-Drain, RESET Output

2 Applications
• Factory Automation
• Portable and Battery-Powered Equipment
• Set-Top Boxes
• Servers
• Appliances
• Electricity Meters
• Building Automation

3 Description
The TLV8x3 family of supervisory circuits provides
circuit initialization and timing supervision, primarily
for DSPs and processor-based systems.
The TLV803, TLV853, and TLV863 are functionally
equivalent. The TLV853 and TLV863 provide an
alternate pinout of the TLV803. The newer TLV803E
device is a pin-to-pin alternative to all of these 3.
During power on, RESET asserts when the supply
voltage (VDD) exceeds 1.1 V. Thereafter, the
supervisory circuit monitors VDD and keeps RESET
active as long as VDD remains below the threshold
voltage VIT. An internal timer delays the return of the
output to the inactive state (high) to ensure proper
system reset. The delay time (td(typ) = 200 ms) starts
after VDD exceeds the threshold voltage, VIT. When
the supply voltage drops below the VIT threshold
voltage, the output is active (low) again. All the
devices in this family have a fixed sense-threshold
voltage (VIT) set by an internal voltage divider.
The product spectrum is designed for supply voltages
of 2.5 V, 3 V, 3.3 V, and 5 V. These devices are
available in a 3-pin SOT-23 package. The TLV803
devices are characterized for operation over a
temperature range of –40°C to +125°C.