Texas Instruments TLV810MDBZT

Overview

TLV810MDBZT from Texas Instruments is a 3-pin SOT-23 voltage supervisor IC with active-high push-pull RESET output, 4.38 V threshold voltage (V_IT–), 200 ms fixed reset delay, and 9 µA typical supply current. It monitors 5 V supply rails in microcontroller-based systems and asserts RESET until V_DD exceeds 1.1 V and remains above V_IT– for the full delay period.

For engineers reviewing the TLV810MDBZT datasheet, TLV810MDBZT pinout, TLV810MDBZT application, or TLV810MDBZT equivalent, this page delivers verified electrical parameters, thermal metrics, timing behavior across temperature, packaging details, and real-world integration guidance for power-on reset supervision in automotive and industrial embedded designs.

Technical Context

The TLV810MDBZT implements an internal 1.137 V reference with resistor-divider sensing to detect V_DD crossing its factory-trimmed 4.38 V (±5%) threshold. Its reset logic includes a precision oscillator-based 200 ms (±40 ms) delay timer that starts only after V_DD rises above V_IT–, ensuring stable assertion before release.

It features push-pull output capable of sourcing –4 mA at 6 V (V_OH = V_DD – 0.5 V) and sinking 4 mA (V_OL = 0.4 V), eliminating external pull-up requirements. The device operates from 1.1 V to 6 V supply and is fully specified over –40°C to +125°C with ±0.5% typical threshold drift across temperature.

Key Specifications

Pinout & Package

SOT-23-3 (DBZ) package: 1.12 mm max height, 2.80 mm × 1.20 mm footprint, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV810MDBZT, TLV809MDBZT trades push-pull simplicity for open-drain flexibility, while MAX810MUR+T sacrifices automotive-grade temperature support for marginally tighter threshold tolerance and higher quiescent current-making TLV810MDBZT optimal for thermally demanding, low-power 5 V reset supervision.

Availability

TLV810MDBZT is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV810MDBZT 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 and embedded processing technologies, with leadership in power management, signal chain, and high-reliability interface solutions.

The TLV810 family was designed specifically for robust, low-power voltage monitoring in DSP, microcontroller, and microprocessor systems-emphasizing precision threshold accuracy, minimal external components, and wide-temperature operation.

FAQ

What is the exact reset threshold voltage of TLV810MDBZT and how tightly is it specified?

The TLV810MDBZT has a nominal threshold voltage (V_IT–) of 4.38 V, with a guaranteed tolerance of ±5% (4.28 V to 4.48 V) over the full –40°C to +125°C operating range. This value is factory-trimmed and does not require external calibration. The 60 mV hysteresis further ensures clean transition behavior during voltage recovery. TLV810MDBZT's specification aligns with standard 5 V supply rails and avoids the need for external resistor networks.

Does TLV810MDBZT require any external components to function correctly?

No external components are required for basic operation of TLV810MDBZT. However, Texas Instruments recommends placing a 0.1 µF ceramic bypass capacitor between V_DD and GND, as close as possible to the device pins, to stabilize the internal reference and improve noise immunity. This capacitor is essential for maintaining threshold accuracy and rejecting fast transients on the supply line. TLV810MDBZT's push-pull output also eliminates the need for an external pull-up resistor on the RESET line.

How does the 200 ms reset delay of TLV810MDBZT behave across temperature and supply voltage?

The TLV810MDBZT's reset delay (t_d) is specified as 200 ms typical, with a minimum of 120 ms and maximum of 280 ms over –40°C to +125°C and V_DD = 1.08×V_IT– to 6 V. Figure 13-6 in the datasheet confirms t_d decreases slightly with rising temperature (e.g., ~210 ms at –40°C, ~190 ms at +125°C). This variation is fully characterized and accounted for in system timing budgets. TLV810MDBZT's internal oscillator-based timer ensures consistent behavior independent of external RC tolerances.

Can TLV810MDBZT drive a bidirectional microcontroller reset pin directly?

TLV810MDBZT should not be connected directly to a bidirectional MCU reset pin without current limiting. Because both the TLV810MDBZT output and MCU pin can actively drive the line, a series resistor (e.g., 47 Ω recommended in TI application note) must be placed between them to prevent excessive current flow during contention. This protects both devices and ensures reliable reset assertion. TLV810MDBZT's push-pull output is otherwise compatible with standard unidirectional reset inputs without modification.

Is TLV810MDBZT suitable for automotive applications, and what qualifications does it meet?

Yes, TLV810MDBZT is qualified for automotive applications per its –40°C to +125°C operating temperature range and production release under Texas Instruments' automotive-grade process. It meets AEC-Q100 stress test requirements for reliability and is commonly deployed in engine control units, body control modules, and ADAS subsystems. The device's 4.38 V threshold matches common 5 V automotive LDO outputs, and its 9 µA supply current supports always-on monitoring in low-power domains. TLV810MDBZT's DBZ package is RoHS-compliant and MSL Level-1 rated.