Texas Instruments TLV853MDBZR

Overview

TLV853MDBZR from Texas Instruments is a 3-pin voltage supervisor IC with active-low, open-drain RESET output, precision 4.38 V threshold voltage (V_IT–), 200 ms fixed reset delay, 9 µA typical supply current, and operation across –40°C to +125°C - used for reliable power-on reset supervision in microcontroller, DSP, and FPGA systems.

For engineers reviewing the TLV853MDBZR datasheet, TLV853MDBZR pinout, TLV853MDBZR application, or TLV853MDBZR equivalent, this page delivers verified functional identity, SOT-23 package mapping, exact threshold and timing specs, thermal and ESD ratings, and two validated alternative parts for industrial and embedded power-rail monitoring designs.

Technical Context

The TLV853MDBZR implements a precision bandgap-based voltage reference (1.137 V) feeding a comparator that monitors VDD against a fixed internal divider-defined threshold of 4.38 V. Its reset logic includes an integrated oscillator-driven timer ensuring a guaranteed 120–280 ms deassertion delay after VDD exceeds V_IT–.

It features built-in transient rejection on VDD (minimum pulse width tw = 10 µs), operates down to 1.1 V supply, supports level-shifted RESET pull-up up to 6 V, and maintains high-impedance output below 1.1 V - enabling robust initialization in noisy, battery-powered, or multi-rail systems.

Key Specifications

Pinout & Package

SOT-23 (DBZ) package, 3-pin, body size 2.92 mm × 1.30 mm, surface-mount, RoHS-compliant, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV853MDBZR, TLV803MDBZR and TLV863MDBZR offer identical supervision functionality and threshold accuracy but demand PCB layout changes due to non-matching pin assignments - making TLV853MDBZR the optimal choice for new designs targeting its specific 1=VDD/2=GND/3=RESET configuration.

Availability

TLV853MDBZR is available at Aetrix Electronics and suitable for factory automation, electricity meters, and building automation systems requiring stable component supply, extended temperature operation, and long-lifecycle support.

Supply support for TLV853MDBZR 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 company specializing in analog, embedded processing, and power management technologies, with leadership in high-reliability industrial and automotive ICs.

The TLV8x3 family was designed specifically for robust, low-power voltage supervision in processor-based systems - delivering precise reset generation, thermal stability, and noise immunity for DSPs, MCUs, and FPGAs.

FAQ

What is the exact reset threshold voltage of TLV853MDBZR?

The TLV853MDBZR has a fixed negative-going input threshold voltage (V_IT–) of 4.38 V, with a tolerance of ±0.10 V over –40°C to +125°C. This value is set by an internal precision voltage divider and matches standard 5 V supply rails. The datasheet specifies min/max values of 4.28 V and 4.48 V respectively, confirming tight production control for critical brownout detection in TLV853MDBZR applications.

Does TLV853MDBZR support operation below 2 V supply?

Yes, TLV853MDBZR begins asserting valid RESET output once VDD exceeds 1.1 V, and remains functional down to that level. Its supply voltage range is specified from 1.1 V to 6 V, with 9 µA typical supply current measured at 2 V. Below 1.1 V, the output enters high-impedance state - a key feature enabling safe power sequencing in TLV853MDBZR-based systems with multi-stage regulators.

Can TLV853MDBZR drive a 5 V logic input directly?

Yes, TLV853MDBZR's open-drain RESET output supports pull-up voltages up to 6 V, allowing direct interface with 5 V CMOS logic inputs without level-shifting circuitry. When pulled up to 5 V, the low-level output voltage (V_OL) remains ≤0.4 V at 2 mA sink current - satisfying standard 5 V logic '0' thresholds. This capability is explicitly confirmed in the TLV853MDBZR electrical characteristics table.

Is TLV853MDBZR pin-compatible with MAX803?

Yes, the TLV853MDBZR is explicitly documented as pin-for-pin compatible with the MAX803 in its product description. Both devices share the same 3-pin SOT-23 footprint and functional assignment (VDD, GND, RESET), though TLV853MDBZR uses a different pin numbering order (1=VDD, 2=GND, 3=RESET) matching the MAX803 layout - enabling drop-in replacement in legacy designs originally using MAX803.

What is the maximum recommended pull-up resistor value for TLV853MDBZR's RESET pin?

The TLV853MDBZR datasheet specifies a recommended pull-up resistor range of 10 kΩ to 1 MΩ on the RESET pin. A 10 kΩ resistor ensures fast rise time and strong noise immunity, while 1 MΩ minimizes current draw in ultra-low-power applications. The upper limit is constrained by the 350 nA output leakage current (I_OH) and required logic-high voltage margin - values outside this range may cause timing violations or logic level uncertainty in TLV853MDBZR implementations.