MAX6762TATAD3-T - Dual Window Detector, 3.3V/Adj, TDFN-8 | Maxim
MPN: MAX6762TATAD3-T ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.33 | $3.33 |
| 10 | $3.05 | $30.50 |
| 100 | $2.62 | $262.00 |
| 500 | $2.21 | $1,105.00 |
| 1,000 | $1.85 | $1,850.00 |
MAX6762TATAD3-T Overview
A window detector is a specialized voltage supervisor IC that asserts a reset or interrupt when its monitored supply moves outside a programmable voltage window (between a lower undervoltage threshold and an upper overvoltage threshold). It sits in the broader power management IC hierarchy as a sub-category of supervisors and reset ICs, commonly placed between a regulator and a microcontroller, ASIC, or FPGA to guarantee the load only operates within safe supply limits during power-up, brown-out, and transient events.
Key features include ±1.5% threshold accuracy over temperature, an integrated 185 ms reset timeout, low 8 uA supply current, and a small 3x3 mm TDFN package with an exposed thermal pad that improves heat spreading and allows an unobtrusive PCB layout. The MAX6762TATAD3-T ships on tape-and-reel (the -T suffix) and is qualified to the -40 C to +125 C automotive temperature range, making it suitable for harsh environments.
The device uses a precision bandgap reference and trimmed resistor divider to set the fixed 3.3 V channel, while the second channel uses an external resistor divider referenced to the internal 0.4 V bandgap. This dual-monitor architecture lets one IC replace two single-channel supervisors, saving board area in dual-rail systems such as 3.3 V I/O plus 1.0/1.2/1.5/1.8 V core voltage monitoring.
Typical applications include microprocessor/ASIC/FPGA core and I/O rail supervision in automotive infotainment, industrial PLCs, telecom line cards, and portable battery-powered equipment where low quiescent current extends battery life. The dual-window capability makes it especially useful in systems that must detect both undervoltage and overvoltage on the same supply.
When designing with the MAX6762TATAD3-T, place the 0.1 uF VCC bypass capacitor within 3 mm of the VCC pin and connect the exposed pad (EP) to a grounded copper pour of at least 25 mm^2 for rated thermal performance. The OUT/active-low RESET pin is open-drain on some variants and push-pull on others, so verify the variant code (TATxx in the part number) before wiring the pull-up resistor.
This page synthesizes distributor pricing, drop-in alternatives drawn from the same MAX6762 family, and practical layout guidance that goes beyond the manufacturer datasheet to accelerate evaluation and sourcing decisions.
Drop-in alternatives for MAX6762TATAD3-T — 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-T (same form factor and footprint) — differing in Function, Monitored Channels, Operating Temperature Range, Output Type, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX6762TATAD3+T
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →MAX6762TATAD0+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX6762TALAD3+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX6762TAZAD3+T
✅ Drop-In📋 Reference alternative (not in catalog)
MAX6762TATWD3+T
✅ Drop-In📋 Reference alternative (not in catalog)
MAX6754UTWD3+T
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MAX6762TATAD3-T Specifications
| Function | Dual voltage window detector / supervisor |
| Monitored Channels | 2 (one fixed 3.3 V, one adjustable) |
| VCC Supply Range | 1.0 V to 5.5 V |
| Fixed Threshold (Channel 1) | 3.3 V (factory-trimmed) |
| Adjustable Threshold Range (Channel 2) | 0.4 V to VCC |
| Threshold Accuracy | ±1.5 % (over temperature) |
| Output Type | Active-low, open-drain / push-pull (variant dependent) |
| Reset Timeout | 185 ms (active low) |
| Quiescent Supply Current | 8 uA (typical) |
| Operating Temperature Range | -40 C to +125 C (automotive) |
| Package | 8-pin TDFN-EP (3x3 mm) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
| Lead Free | Yes |
MAX6762TATAD3-T Pin Configuration
| Pin 1 | IN1 — Monitored input 1 (factory-trimmed 3.3 V threshold on this variant) |
| Pin 2 | GND — Ground |
| Pin 3 | IN2 — Monitored input 2 (adjustable threshold via external resistor divider) |
| Pin 4 | MR — Manual reset input (active low) |
| Pin 5 | RESET2 — Active-low reset output for channel 2 (push-pull or open-drain per variant) |
| Pin 6 | RESET1 — Active-low reset output for channel 1 (push-pull or open-drain per variant) |
| Pin 7 | VCC — Supply voltage, 1.0 V to 5.5 V |
| Pin 8 | EP — Exposed pad; connect to ground plane for thermal dissipation |
Typical Applications
MAX6762TATAD3-T is suitable for 6 applications: Automotive ECU Voltage Monitoring, Industrial PLC Power Supervision, Telecom Line Card ASIC Reset, Portable Battery-Powered Devices, FPGA Core and I/O Rail Sequencing, Medical Device Power Integrity.
Automotive ECU Voltage Monitoring
The MAX6762TATAD3-T monitors both a 3.3 V microcontroller I/O rail and a lower core voltage rail in an automotive ECU. Its 3.3 V fixed channel removes an external divider, while the adjustable channel monitors core rails down to 0.4 V. The 8 uA Iq and -40 C to +125 C grade suit always-on battery-connected modules. The TDFN-EP package plus a 25 mm^2 copper pour meets automotive temperature derating.
Recommended
Industrial PLC Power Supervision
In a 24 V industrial PLC the MAX6762TATAD3-T sits between the 3.3 V and 1.8/2.5 V rails and the PLC processor, asserting active-low RESET when either rail drifts outside its window. The dual-window architecture catches both undervoltage and overvoltage events caused by load steps or input transients. The 185 ms timeout covers PLC oscillator stabilization; the open-drain output lets the supervisor wire-OR with other reset sources.
Recommended
Telecom Line Card ASIC Reset
Telecom line cards commonly run a 3.3 V I/O ring plus a 1.0 V or 1.2 V ASIC core that both require monitoring. The MAX6762TATAD3-T replaces two single-channel supervisors with one 8-pin device. Its 8 uA Iq and 5.5 V VCC tolerance suit -48 V-to-3.3 V intermediate bus architectures. The push-pull active-low output can drive ASIC reset directly without an external pull-up.
Recommended
Portable Battery-Powered Devices
Handheld test gear, e-readers, and IoT sensors run for months on a single cell and need continuous supply supervision. The MAX6762TATAD3-T draws only 8 uA, monitors both a 3.3 V regulated rail and a 0.4-3.0 V adjustable rail, and resets the host MCU on brown-out. The 3x3 mm TDFN-EP footprint leaves board space for the battery, and the 185 ms reset prevents false wake-ups on transient droops.
Recommended
FPGA Core and I/O Rail Sequencing
FPGAs require strict rail sequencing: the 1.0 V or 1.2 V core must be stable before the 3.3 V I/O rail enables outputs. The MAX6762TATAD3-T's dual-window architecture verifies both rails in one IC; the adjustable channel can be set to the exact VCCINT threshold using an external divider. Its 185 ms active-low reset timeout covers the worst-case FPGA configuration time, preventing bus contention during power-up.
Recommended
Medical Device Power Integrity
Patient monitors and portable diagnostic devices require IEC 60601-1 compliant power supervision, and the MAX6762TATAD3-T provides a windowed dual-rail check that catches both undervoltage (brown-out) and overvoltage (regulator failure) events. Its 8 uA Iq extends battery life in ambulatory units, and the 3x3 mm TDFN-EP footprint fits compact handheld enclosures. Combined with a small MCU, the supervisor adds a hardware safety layer that complements firmware-based monitoring.
Recommended
Recommended Products Summary
Engineering reference data for MAX6762TATAD3-T — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX6762TATAD3+T | MAX6762TATAD0+ | MAX6762TALAD3+ | MAX6762TAZAD3+T | MAX6762TATWD3+T |
|---|---|---|---|---|---|---|
| Package | TDFN-EP-8 (3x3 mm) | TDFN-EP-8 (3x3 mm) - same | TDFN-EP-8 (3x3 mm) - same | TDFN-EP-8 (3x3 mm) - same | TDFN-EP-8 (3x3 mm) - same | TDFN-EP-8 (3x3 mm) - same |
| Brand | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated |
| Channels | 2 (1 fixed 3.3 V, 1 adjustable) | 2 (1 fixed 3.3 V, 1 adjustable) | 2 (1 fixed 3.3 V, 1 adjustable) | 2 (1 fixed low-V, 1 adjustable) | 2 (1 fixed 3.3 V, 1 adjustable) | 2 (1 fixed, 1 adjustable) |
| Reset Timeout | 185 ms (D3) | 185 ms (D3) | D0 (shorter timeout / manual reset) | 185 ms (D3) | 185 ms (D3) | 185 ms (D3) |
| Fixed Threshold (Channel 1) | 3.3 V | 3.3 V | 3.3 V | 1.5/1.8 V class (L variant) | 3.3 V | 3.3 V (W trim) |
| Quiescent Current | 8 uA | 8 uA | 8 uA | 8 uA | 8 uA | 8 uA |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
Key Differentiators
- Dual-window detector replaces two single-channel supervisors in one 8-pin IC (vs MAX6754 family (single-channel))
- True window comparator (undervoltage AND overvoltage) (vs MAX6715 family (reset-only))
- Ultra-low 8 uA quiescent current for always-on battery applications (vs MAX6762 variants in larger packages (e.g. SO-8))
Design Notes
Place the 0.1 uF VCC bypass capacitor within 3 mm of the VCC pin (pin 7) and connect the exposed pad (EP, pin 8) to a continuous grounded copper pour of at least 25 mm^2 on the top or second layer. This keeps the junction temperature rise within the -40 C to +125 C rating at 8 uA quiescent plus transient load steps. Recommended: use a star-ground pattern so that the high-current return paths do not share copper with IN1/IN2 sense traces.
When monitoring a 3.3 V rail with IN1 and a 1.0 V core with IN2, route IN1 directly to the 3.3 V output capacitor of the upstream regulator, NOT to the load side. Likewise, route IN2 directly to the core output capacitor. Long sense traces pick up switching noise from the load and can cause false reset pulses. Estimated: at 1 mA/V noise coupling, a 50 mV ripple on a 3.3 V sense line can briefly trip the 3.3 V window comparator, so 10 mm of separation from switching nodes is recommended.
Do not omit the external resistor divider on IN2 - the adjustable channel defaults to monitor VCC if left open, which defeats its purpose. Use 1% tolerance resistors (R_top < 1 MOhm to minimize leakage-induced error). Also verify the active-low RESET output stage: TAT/TAL codes are push-pull, while Z codes are open-drain and REQUIRE a 10 kOhm to 100 kOhm pull-up to VCC. Forgetting this pull-up causes a floating RESET line and unpredictable system behavior.
At 8 uA quiescent current and 5.5 V VCC, the steady-state dissipation is approximately 44 uW - negligible for thermal design. However, during a RESET assertion the active-low output may sink up to 20 mA at 0.4 V (8 mW) into a shorted line, raising the junction slightly above ambient. The 3x3 mm TDFN-EP with a 25 mm^2 copper pour keeps theta_JA around 80 C/W, giving < 1 C rise even at 8 mW - well within the 125 C rating.
Compliance Information
RoHS and REACH compliance confirmed by Analog Devices / Maxim Integrated product page. AEC-Q100 automotive qualification status not explicitly stated in the available data - confirm with manufacturer for full automotive certification if required for your application.
