The TLV8x3 family of supervisory circuits provides circuit initialization and timing
supervision, primarily for DSPs and processor-based systems.
TLV853, and TLV863 are functionally equivalent. The TLV853 and TLV863 provide an alternate pinout
of the TLV803.
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.
For all available packages, see the package option addendum
at the end of the data sheet.
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