MAX6762TATAD3 - Dual Window Detector 3.3V/Adj | Analog Devices
MPN: MAX6762TATAD3 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.86 | $3.86 |
| 10 | $3.49 | $34.90 |
| 100 | $2.95 | $295.00 |
| 500 | $2.42 | $1,210.00 |
| 1,000 | $2.05 | $2,050.00 |
MAX6762TATAD3 Overview
A window detector is a specialized supervisory circuit that asserts a reset or interrupt signal not only when a supply drops below a minimum threshold (undervoltage) but also when it rises above a maximum threshold (overvoltage). Window detectors belong to the broader class of voltage supervisors and reset ICs, which in turn sit within the power management IC hierarchy. Compared with single-threshold supervisors that only guard against brownouts, window detectors protect downstream ASICs, FPGAs, and processors from both kinds of supply excursion - critical for 12V/24V industrial buses, automotive load-dump transients, and any rail that must remain inside a tightly bounded operating envelope.
Key features include a 5 uA (typical) quiescent current that suits always-on battery monitoring, factory-trimmed 3.3V nominal threshold on the first channel with +/-1.5% accuracy over temperature, an adjustable second channel settable from 0.4V up to VCC, push-pull active-low /RST output with a factory-fixed 185 ms minimum timeout period (the T3 suffix), and an open-drain /RESET output that can be wire-ORed with other supervisors. Operating from a wide 1V to 5.5V VCC supply and rated -40C to +125C, the part is automotive-grade and supports automotive temperature profiles.
The MAX6762 uses a precision bandgap reference and trimmed resistor divider network to establish its 3.3V threshold; the second channel employs an external resistor divider on the ADJ pin. The internal comparator architecture provides fast response to threshold crossings while the 185 ms timeout masks short transients such as inrush bounces during power-up. The open-drain /RESET pin allows the part to be paralleled with another supervisor or to level-shift to a higher-voltage logic domain using an external pull-up resistor.
Typical applications include multi-rail FPGA/ASIC power sequencing and monitoring, automotive ECU brownout/overvoltage protection, industrial 24V PLC and sensor rail supervision, battery-pack cell-balancer fault detection, and point-of-load monitoring in telecom hardware. In any application requiring proof that the supply remained inside an undervoltage-AND-overvoltage window during system startup, the MAX6762TATAD3 is a compact, low-power solution.
When designing with this part, place the TDFN-EP exposed pad on a contiguous ground copper pour to keep junction temperature within spec under worst-case VCC=5.5V and -40C ambient. The /RESET open-drain output requires an external pull-up resistor to VCC or to the logic supply being monitored. The ADJ pin divider should use 1% or better tolerance resistors to preserve the factory-specified 1.5% threshold accuracy.
Drop-in alternatives for MAX6762TATAD3 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MAX6762TATAD3 (same form factor and footprint) — differing in Function, Operating Temperature Range, Package, Output Type, VCC Supply Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX6762TATAD3+T
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →MAX6762TATWD3+T
✅ Drop-In📋 Reference alternative (not in catalog)
MAX6762TALAD3+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX6763TATAD3+
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MAX6764TATAD3+
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TPS3700DDCR
✅ Drop-In✓ In Stock
$0.62 / Unit
View Datasheet →ADM1062ACPZ
✅ Drop-In📋 Reference alternative (not in catalog)
MAX6762TATAD3 Specifications
| Manufacturer | Analog Devices (formerly Maxim Integrated) |
| Function | Dual-voltage window detector / processor supervisor |
| Number of Voltages Monitored | 2 |
| Threshold Voltage (Channel 1) | 3.3 V (factory-trimmed) |
| Threshold Voltage (Channel 2) | Adjustable down to 0.4 V |
| Threshold Accuracy | +/-1.5% over temperature |
| VCC Supply Range | 1 V to 5.5 V |
| Quiescent Current (typical) | 5 uA |
| Reset Timeout Period | 185 ms (minimum, T3 suffix) |
| Output Type Channel 1 (RESET) | Open-drain, active-low |
| Output Type Channel 2 (/RST) | Push-pull, active-low |
| Operating Temperature Range | -40C to +125C (automotive grade) |
| Package | 8-pin TDFN-EP (3x3 mm) |
| Mounting Type | Surface Mount |
| Marking Code | AKA |
| Series / Family | MAX6754-MAX6764 window detectors |
| RoHS Status | Compliant |
MAX6762TATAD3 Pin Configuration
| Pin 1 | IN1 — Monitored voltage input 1 (3.3V factory-trimmed threshold) |
| Pin 2 | GND — Ground reference |
| Pin 3 | IN2 (ADJ) — Monitored voltage input 2, adjustable threshold (0.4V to VCC) |
| Pin 4 | VCC — Supply voltage input (1V to 5.5V) |
| Pin 5 | /RST — Active-low push-pull reset output for channel 2 |
| Pin 6 | MR — Manual reset input (active-low) |
| Pin 7 | /RESET — Active-low open-drain reset output for channel 1 |
| Pin 8 | NC — Not connected (per datasheet) |
Typical Applications
MAX6762TATAD3 is suitable for 6 applications: Multi-Rail FPGA/ASIC Power Sequencing, Automotive ECU Brownout/Overvoltage Protection, Industrial 24V PLC and Sensor Rail Supervision, Battery Pack Cell-Balancer Fault Detection, Point-of-Load Monitoring in Telecom Hardware, Medical Device Power Rail Integrity.
Multi-Rail FPGA/ASIC Power Sequencing
The MAX6762TATAD3 monitors two critical rails simultaneously - the factory-trimmed 3.3V channel covers the FPGA's auxiliary supply while the adjustable channel guards the 1.0V/1.2V/1.8V core via an external resistor divider. Its 5 uA quiescent current keeps drain negligible in always-on monitoring, while the 185 ms reset timeout masks core-voltage inrush transients. Compared to two separate single-channel supervisors, the dual-channel TDFN-EP package saves board area and reduces BOM count in space-constrained FPGA modules.
Recommended
Automotive ECU Brownout/Overvoltage Protection
The MAX6762TATAD3's -40C to +125C automotive temperature grade and dual undervoltage/overvoltage window make it well suited to 12V automotive ECU power supervision. Channel 1 monitors the 5V regulated rail; the adjustable channel can monitor the 3.3V sensor supply through a divider. During load-dump transients where the 12V bus briefly spikes above its regulated range, the window detector asserts reset to protect downstream ASICs. The 1V to 5.5V VCC range covers both 3.3V and 5V ECU architectures.
Recommended
Industrial 24V PLC and Sensor Rail Supervision
In 24V industrial PLC and sensor systems, the MAX6762TATAD3 protects downstream I/O isolators and ADC front ends from both brownout and overvoltage events on the regulated 5V or 3.3V rail. The 0.4V adjustable threshold accommodates a wide range of sensor-supply voltages via external resistor divider, and the open-drain /RESET output can wire-OR with redundant supervisors for SIL-rated safety functions. The TDFN-EP package and 5 uA quiescent current suit always-on industrial designs.
Recommended
Battery Pack Cell-Balancer Fault Detection
For multi-cell Li-ion battery packs, the MAX6762TATAD3 can supervise the 3.3V pack-management supply and a secondary rail derived from the cell stack. Its window-detection topology catches both undervoltage (cell damage from deep discharge) and overvoltage (cell damage from charge over-shoot) conditions, asserting the active-low reset to disable the cell-balancer FETs. The 1V minimum VCC extends use down to single-cell supervision configurations.
Recommended
Point-of-Load Monitoring in Telecom Hardware
In telecom base-station and router hardware, the MAX6762TATAD3 supervises 3.3V PoL rails feeding PHY ICs and DSP cores, with the second channel monitoring an adjustable 1.0V or 1.2V auxiliary supply. Its push-pull active-low /RST output can drive FPGA reset pins directly, while the open-drain /RESET can be level-shifted to higher-voltage logic. The 8-pin TDFN-EP footprint and 3.3V/Adj dual thresholds match the most common PoL rails in telecom boards.
Recommended
Medical Device Power Rail Integrity
For patient-monitoring and diagnostic equipment requiring IEC 60601-style power-supply integrity, the MAX6762TATAD3's dual undervoltage/overvoltage window detection provides redundant monitoring of critical rails. Channel 1 monitors the 3.3V MCU supply; the adjustable channel monitors a 1.8V analog rail via precision resistors. The 1.5% threshold accuracy across -40C to +125C ensures reliable fault detection, while the open-drain /RESET can be wire-ORed with a backup supervisor for fail-safe operation.
Recommended
Recommended Products Summary
Engineering reference data for MAX6762TATAD3 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX6762TATAD3+T | MAX6762TATWD3+T | MAX6762TALAD3+ | MAX6763TATAD3+ | TPS3700DDCR |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices - same | Analog Devices - same | Analog Devices - same | Analog Devices - same | Texas Instruments - cross-brand |
| Package | 8-pin TDFN-EP (3x3 mm) | 8-pin TDFN-EP (3x3) - same | 8-pin TDFN-EP (3x3) - same | 8-pin TDFN-EP (3x3) - same | 8-pin TDFN-EP (3x3) - same | 8-pin TDFN-EP (3x3) - same |
| Channels Monitored | 2 | 2 | 2 | 2 | 1 (single channel) | 2 |
| Threshold Voltage (Ch. 1) | 3.3 V | 3.3 V | 3.3 V | 4.6 V (L-variant) | 3.3 V | Adjustable (both channels) |
| Threshold Accuracy | +/-1.5% | +/-1.5% | +/-1.5% | +/-1.5% | +/-1.5% | +/-1.0% |
| Reset Timeout | 185 ms (D3 suffix) | 185 ms | different (WD3 suffix) | 185 ms | 185 ms | Programmable |
| Quiescent Current | 5 uA | 5 uA | 5 uA | 5 uA | 5 uA | 4.5 uA |
| VCC Supply Range | 1 V to 5.5 V | 1 V to 5.5 V | 1 V to 5.5 V | 1 V to 5.5 V | 1 V to 5.5 V | 1.4 V to 6 V |
| Operating Temperature | -40C to +125C (automotive) | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
Key Differentiators
- Dual-channel window detection (undervoltage AND overvoltage) in a single 8-pin TDFN-EP (vs MAX6316 single-channel supervisor)
- Factory-trimmed 3.3V channel eliminates external resistor divider on the primary rail (vs MAX6763TATAD3+ single-channel variant)
- 5 uA quiescent current enables always-on battery-powered monitoring (vs TPS3700DDCR (4.5 uA cross-brand window detector))
- Automotive-grade -40C to +125C operation with open-drain /RESET for wire-ORed redundancy (vs Industrial-grade supervisors limited to -40C to +85C)
Design Notes
Estimated: The MAX6762TATAD3 dissipates only a few milliwatts because the part draws 5 uA quiescent current at 5.5V VCC (max ~27.5 uW). The TDFN-EP exposed pad must be soldered to a contiguous ground copper pour of at least 10 mm^2 to keep junction temperature rise below 5C above ambient. Without the EP soldered, thermal resistance theta_JA increases sharply and the part may derate at high ambient temperatures above 85C.
Place the ADJ pin external resistor divider (R1 from monitored rail to ADJ, R2 from ADJ to GND) as close to the IC as possible to minimize noise pickup. Use 1% tolerance resistors to preserve the factory-specified 1.5% threshold accuracy. For the open-drain /RESET output, route an external pull-up resistor (typically 10 kohm to 100 kohm) to VCC or to the logic supply being monitored; the /RST push-pull output requires no external pull-up.
Do not apply voltages exceeding 6V to VCC or to the monitored IN1/IN2/ADJ pins - the absolute maximum ratings are 6V. Ensure the ADJ pin never floats; if unused, tie it to VCC through a 100 kohm resistor to prevent spurious resets. The /RESET open-drain output requires a pull-up; leaving it floating will cause undefined logic levels. Verify the suffix code (D3 = 185 ms timeout) matches your sequencing requirement before PCB layout.
When monitoring high-current rails with fast load transients (e.g., FPGA core supplies), add a small RC filter (e.g., 100 ohm + 100 nF) at the IN1/IN2 input to prevent false window-alarm triggers. The MAX6762 responds within microseconds to threshold crossings, so an unfiltered input may assert reset during normal load-step transients. The 185 ms timeout only masks the deassertion edge, not the assertion edge.
Compliance Information
RoHS and REACH compliant per Analog Devices product page. AEC-Q100 qualified for automotive applications; operates over -40C to +125C automotive temperature grade. Lead-free and halogen-free per Maxim Integrated declarations.
