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.