Texas Instruments TLV803EB26RDBZR

Overview

TLV803EB26RDBZR from Texas Instruments is an open-drain, active-low voltage supervisor IC designed for reliable power-on reset and brownout detection in ultra-low-power systems. It features a 2.64 V factory-programmed threshold (±0.5% typical accuracy), 40 µs fixed reset delay, 250 nA typical supply current, and operation from 0.7 V to 6 V supply - enabling use in battery-backed microcontrollers, wearables, and energy-harvesting nodes.

For engineers reviewing the TLV803EB26RDBZR datasheet, TLV803EB26RDBZR pinout, TLV803EB26RDBZR application, or TLV803EB26RDBZR equivalent, key selection criteria include its guaranteed reset assertion down to 0.7 V VPOR, SOT-23-3 (DBZ) package with pin 1 = RESET, open-drain topology requiring external pull-up, and compatibility with FPGA/ASIC power sequencing in portable industrial sensors.

Technical Context

The TLV803EB26RDBZR implements a precision bandgap-referenced comparator with built-in hysteresis (1.2% typical VHYS) to prevent chatter during slow-rising or noisy VDD transitions. Its internal glitch immunity filter rejects transients shorter than 10 µs (typical) at 5% overdrive, ensuring robust operation in electrically harsh environments like factory automation controllers.

As a member of the TLV80xE family, it uses a fixed-threshold architecture with no external resistor network required - the 2.64 V detection point is laser-trimmed during wafer test. The open-drain output supports flexible logic-level translation via external pull-up and is compatible with manual reset (MR) input only in X2SON packages; the DBZ variant lacks MR functionality.

Key Specifications

Pinout & Package

SOT-23-3 (DBZ) package, 2.90 mm × 1.30 mm body size, with pin 1 = RESET, pin 2 = GND, pin 3 = VDD - confirmed per TI SLVSES2J Figure 6-3 and Table 6-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Compared with TLV803EB26RDBZR, TLV803EB26DBZR delivers identical supervision behavior and pinout, while MAX803SUR26+T trades ultra-low power and fast reset for broader legacy ecosystem support - making TLV803EB26RDBZR optimal for new energy-sensitive designs requiring precision and speed.

Availability

TLV803EB26RDBZR is available at Aetrix Electronics and suitable for electricity meters, portable medical sensors, factory automation I/O modules, and notebook embedded controller systems requiring stable component supply across extended temperature and long product lifecycles.

Supply support for TLV803EB26RDBZR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with decades of expertise in precision power management and reliability-critical ICs.

The TLV803E series belongs to TI's low-power voltage supervisor product line, engineered specifically for battery-operated and thermally constrained applications where nanoscale quiescent current and sub-1 V power-on-reset capability are essential.

FAQ

What is the exact reset threshold voltage of the TLV803EB26RDBZR?

The TLV803EB26RDBZR has a factory-programmed falling threshold voltage (VIT–) of 2.64 V with ±0.5% typical accuracy across –40°C to +125°C. This value is laser-trimmed and specified in TI's SLVSES2J datasheet Section 7.5; it does not require external components to set and remains stable over temperature and time.

Does the TLV803EB26RDBZR support manual reset (MR) functionality?

No, the TLV803EB26RDBZR in SOT-23-3 (DBZ) package does not include a manual reset (MR) pin. MR is only available on the 5-pin X2SON (DPW) variants of the TLV803E family. The DBZ package has only three terminals: RESET, GND, and VDD - confirmed in TI's Pin Functions Table 6-1.

What pull-up resistor value is recommended for the open-drain RESET output of TLV803EB26RDBZR?

Texas Instruments specifies a 10 kΩ pull-up resistor to the target logic supply (e.g., 1.8 V or 3.3 V) in all timing and electrical characterization conditions. This value ensures proper rise time (<100 ns) while limiting current draw; values from 4.7 kΩ to 100 kΩ are usable depending on bus capacitance and speed requirements, but 10 kΩ is the validated reference for TLV803EB26RDBZR.

Can TLV803EB26RDBZR operate reliably below 1.0 V supply voltage?

Yes - the TLV803EB26RDBZR guarantees defined reset behavior down to 0.7 V (VPOR), and its output remains asserted (low) until VDD rises above 2.64 V. This enables use in ultra-low-voltage systems such as energy-harvesting nodes or backup-supply monitoring where main rails dip below 1 V during transient events.

Is TLV803EB26RDBZR pin-compatible with older MAX803-series supervisors?

Yes, TLV803EB26RDBZR is explicitly pin-to-pin compatible with MAX803/809/810 families in SOT-23-3 packages, as stated in TI's datasheet Feature List. Its pin 1 = RESET, pin 2 = GND, pin 3 = VDD matches MAX803's R-pinout configuration, allowing direct replacement without PCB modification.