TLV810MDBZT - 3-Pin Voltage Supervisor, Active-High Push-Pull Reset | Texas Instruments
MPN: TLV810MDBZT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.62 | $0.62 |
| 10 | $0.54 | $5.40 |
| 100 | $0.41 | $41.00 |
| 500 | $0.32 | $160.00 |
| 1,000 | $0.26 | $260.00 |
| 3,000 | $0.21 | $630.00 |
TLV810MDBZT Overview
A voltage supervisor (reset IC) is a dedicated power-monitoring IC that holds a processor in reset until its supply rail is stable and within tolerance, preventing code-execution faults during power-up, brown-out, or power-down events. Voltage supervisors sit between the power management stage and the MCU/DSP, and form part of the broader power management hierarchy that includes voltage regulators, supervisors, and battery management ICs. By generating a deterministic reset pulse with a fixed 200 ms delay, the supervisor guarantees that the downstream processor boots only into valid code.
The TLV810MDBZT features precision threshold options of 2.5V, 3V, 3.3V, and 5V, factory-trimmed to within tight tolerances. The 4.38V 'M' variant targets 5V systems with 12% nominal tolerance. The push-pull totem-pole output stage drives CMOS logic inputs directly without external pull-up resistors, simplifying board layout. The 200 ms fixed reset delay is internally generated and requires no external capacitor, reducing BOM count and improving reliability.
Internally, the TLV810 uses a precision bandgap reference and comparator architecture to continuously compare VCC against the trimmed threshold. Hysteresis of 50 mV typical prevents chattering near the threshold, while ESD protection exceeds 2 kV HBM on all pins. The SOT-23-3 package occupies less than 10 mm² of board area, making the part ideal for space-constrained designs.
Typical applications include DSP and microcontroller reset circuits in industrial controllers, portable battery-powered equipment, automotive infotainment modules, and any 5V logic system requiring reliable brown-out protection. The MAX810-compatible footprint also makes the TLV810 a modern replacement for aging legacy designs.
When designing with this device, ensure VCC ramps monotonically and that decoupling capacitance of at least 0.1 µF is placed within 5 mm of the VCC pin. Note that the push-pull RESET output actively drives both high and low - a pull-up resistor must NOT be added externally, or contention and excess current will result.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for TLV810MDBZT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
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TLV810ZDBZT
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MAX810LEUR+T
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MCP810T-475I/TT
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TLV810MDBZT Specifications
| Function | Voltage supervisor (reset IC) |
| Threshold Voltage (M variant) | 4.38 V |
| Monitored Voltage Rails | 2.5 V / 3 V / 3.3 V / 5 V |
| Number of Supervisors | 1 |
| Reset Output Type | Push-Pull, Totem Pole |
| Reset Polarity | Active-High |
| Reset Delay Time | 200 ms (fixed) |
| Supply Current (Typical) | 9 µA |
| Operating Temperature Range | -40°C to +125°C |
| Package | SOT-23-3 (DBZ) |
| Mounting Type | Surface Mount |
| Pin Count | 3 |
| Pin Compatibility | MAX810 pin-for-pin compatible |
| ESD Rating (HBM) | 2 kV |
| RoHS Status | Compliant |
TLV810MDBZT Pin Configuration
| Pin 1 | GND — Ground reference |
| Pin 2 | RESET — Active-high push-pull reset output (asserts when VCC < 4.38V) |
| Pin 3 | VCC — Monitored supply voltage input |
Typical Applications
TLV810MDBZT is suitable for 6 applications: Microcontroller Reset Circuit, DSP and Processor Initialization, Industrial Control Equipment, Portable Battery-Powered Devices, Automotive Infotainment Modules, Legacy MAX810 Replacement.
Microcontroller Reset Circuit
The TLV810MDBZT provides a deterministic power-on reset for 5V microcontrollers (MSP430, STM32, PIC) by asserting RESET when VCC falls below 4.38V. Its 4.38V threshold aligns precisely with the brown-out boundary of 5V rails, preventing code-execution faults during power-up. The 200 ms fixed delay ensures the oscillator and PLL stabilize before code execution begins. Unlike the legacy MAX810, the TLV810's 9 µA supply current minimizes quiescent drain in always-on battery-powered systems.
Recommended
DSP and Processor Initialization
The TLV810MDBZT supervises the core 5V rail of DSPs and ARM Cortex processors, holding them in reset until VCC reaches the safe operating range. The push-pull totem-pole output drives CMOS logic directly without external pull-up resistors, simplifying board layout. The 200 ms internal delay timer matches the typical DSP crystal oscillator startup time of 10-50 ms plus PLL lock time, guaranteeing a clean boot. This part is designed specifically for DSP/processor-based systems per the TI datasheet.
Recommended
Industrial Control Equipment
Industrial PLCs and motor controllers operate in -40°C to +85°C environments and require deterministic brown-out protection. The TLV810MDBZT's -40°C to +125°C operating range covers the full industrial temperature window. The 4.38V threshold matches the 5V supply rails typical of industrial logic, and the 9 µA quiescent current suits always-on monitoring circuits. The SOT-23-3 package fits compact DIN-rail mounted modules where PCB area is constrained.
Recommended
Portable Battery-Powered Devices
Battery-powered IoT devices, handheld instruments, and portable medical monitors require low quiescent current and reliable brown-out protection as the battery discharges. The TLV810MDBZT's 9 µA typical supply current adds minimal drain to the battery budget, while the 4.38V threshold triggers reset before the battery cell voltage sags too low for reliable regulator operation. The SOT-23-3 package weighs less than 0.05 g, ideal for weight-sensitive portable products.
Recommended
Automotive Infotainment Modules
Automotive infotainment head units, instrument clusters, and HVAC controllers operate from 12V battery rails with 5V internal supplies that must be supervised during cranking transients. Note that the TLV810MDBZT is rated -40°C to +125°C but is NOT AEC-Q100 qualified - it suits non-safety automotive subsystems only. The 4.38V threshold and 200 ms delay provide stable reset for the head-unit processor during engine-start voltage dips. For safety-critical ECUs, use AEC-Q100-qualified supervisors like TPS3808-Q1.
Recommended
Legacy MAX810 Replacement
The TLV810MDBZT is pin-for-pin compatible with the original Maxim MAX810 in the SOT-23-3 package, providing a modern drop-in upgrade for designs where the MAX810 is obsolete or expensive. The TLV810's 9 µA supply current improves on the older MAX810's higher consumption, while the precision 4.38V threshold matches the 5V rail requirements. The push-pull output topology is identical, requiring no PCB changes for the swap. This makes the TLV810MDBZT a recommended substitute in long-life industrial designs.
Recommended
Recommended Products Summary
Engineering reference data for TLV810MDBZT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLV810LDBZT | TLV810EDBZT | MAX810LEUR+T | MCP810T-475I/TT | CAT810LTBI-GT3 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Microchip Technology | onsemi |
| Package | SOT-23-3 (DBZ) | SOT-23-3 (DBZ) - same | SOT-23-3 (DBZ) - same | SOT-23-3 - same | SOT-23-3 - same | SOT-23-3 - same |
| Threshold Voltage | 4.38 V | 4.63 V | 2.93 V | 4.63 V | 4.75 V | 4.63 V |
| Target Rail | 5 V | 5 V | 3.3 V | 5 V | 5 V | 5 V |
| Reset Polarity | Active-High | Active-High | Active-High | Active-High | Active-High | Active-High |
| Reset Delay | 200 ms | 200 ms | 200 ms | 200 ms | 200 ms | 200 ms |
| Output Type | Push-Pull (Totem Pole) | Push-Pull (Totem Pole) | Push-Pull (Totem Pole) | Push-Pull (Totem Pole) | Push-Pull (Totem Pole) | Push-Pull (Totem Pole) |
Key Differentiators
- MAX810 pin-for-pin compatibility with modern TI production (vs MAX810LEUR+T)
- Precision factory-trimmed threshold options (vs MAX810 family)
- Active-high push-pull topology (vs MCP810T-475I/TT)
Design Notes
Place a 0.1 µF ceramic decoupling capacitor within 5 mm of the VCC pin (pin 3) to ensure stable threshold detection during fast load transients. The TLV810 monitors VCC continuously; high-frequency noise on VCC near 4.38V can cause spurious RESET pulses without proper decoupling. A bulk 1-10 µF capacitor is optional but recommended for systems with high inrush currents.
Do NOT add an external pull-up resistor to the RESET output - the TLV810 uses a push-pull totem-pole stage that actively drives both high and low. A pull-up resistor will cause output contention and excess supply current, potentially damaging the IC. Connect RESET directly to the processor's reset input pin only. This is the most common design mistake when migrating from open-drain supervisors.
Route the VCC trace directly from the regulator output to the TLV810's VCC pin without series resistance or inductor segments. Voltage drop between the regulator and supervisor can shift the effective threshold and cause premature or delayed reset assertions. Keep ground return paths short and use a ground plane to avoid ground bounce during high-current load steps.
Compliance Information
RoHS and REACH compliant per TI product page. NOT AEC-Q100 qualified - choose TPS3808-Q1 for automotive. Standard industrial-grade supervisor suitable for consumer and industrial applications.
