My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6753KA16
- Part No.:
- MAX6753KA16
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6753KA16.pdf
- Description:
- IC SUPERVISOR UP RESET CIRCUIT
- Quantity:
- Payment:
- Shipping:
Inventory:1,897
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6753KA16 from Maxim Integrated is a window watchdog supervisory IC for automotive-grade microprocessor monitoring, featuring factory-trimmed 1.575V VCC reset threshold (±2%), capacitor-adjustable reset timeout (0.506–9.487 ms), capacitor-adjustable slow/fast watchdog periods (tWD2 = 64.77–1214.4 ms; tWD1 = 1.01–75.89 ms), and operation across –40°C to +125°C. It asserts active-low RESET on VCC brownout, manual reset, or windowed watchdog fault - used in engine control units and ADAS domain controllers.
For engineers reviewing the MAX6753KA16 datasheet, MAX6753KA16 pinout, MAX6753KA16 application, or MAX6753KA16 equivalent, this page delivers verified electrical parameters, SOT23-8 terminal mapping, window watchdog timing constraints, automotive temperature validation, and direct alternative part comparisons - all grounded in Maxim's official MAX6746–MAX6753 family documentation.
Technical Context
The MAX6753KA16 implements a dual-threshold window watchdog architecture: it monitors WDI pulse intervals against independently set fast (tWD1) and slow (tWD2) timeouts derived from CSWT and pinstrapped SET0/SET1 logic states. A valid watchdog event must fall strictly between tWD1(max) and tWD2(min); violations trigger RESET for the full tRP period.
Reset assertion is governed by VCC falling below 1.575V (±2%) or RESET IN dropping below 1.235V (±2%), with guaranteed RESET validity down to VCC ≥ 1V. The device uses internal ramp-current sources (250nA typ) on SRT/SWT pins to convert external capacitors into precise timeout delays via linear charge-time integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 1.575V ±2% - factory-trimmed reference enabling reliable brownout detection at 1.6V system rails |
| RESET Timeout (tRP) | 0.506–9.487 ms - set by 100–1500pF capacitor on SRT pin; supports µP power-up sequencing compliance |
| Slow Watchdog (tWD2) | 64.77–1214.4 ms - determined by CSWT value; defines maximum allowable WDI interval before slow-fault reset |
| Fast Watchdog (tWD1) | 1.01–75.89 ms - selected via SET0/SET1 pinstrapping (8x/16x/64x ratio vs tWD2); defines minimum WDI interval before fast-fault reset |
| Supply Current | 3.7–10 µA - ultra-low ICC enables use in always-on automotive modules without battery drain |
| Operating Temp Range | –40°C to +125°C - fully specified for under-hood automotive applications per AEC-Q100 stress requirements |
| RESET Output Type | Open-drain - allows level-shifting to 0–6V logic domains and wired-OR reset bus configurations |
Pinout & Package
MAX6753KA16 is housed in an 8-pin SOT23-8 package (2.9mm × 1.6mm × 1.1mm), lead-free compatible, with thermal pad omitted. Pin 1 is marked by a dot; pin numbering follows standard counterclockwise orientation from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SET0 | Logic input for watchdog window ratio selection | Configures tWD1/tWD2 ratio: LOW/LOW = 8×, LOW/HIGH = 16×, HIGH/HIGH = 64×; HIGH/LOW disables watchdog |
| 2 - SET1 | Logic input for watchdog window ratio selection | Paired with SET0 to define fast watchdog timeout multiplier; no internal pullup/pulldown - requires explicit biasing |
| 3 - GND | Ground reference | Primary return path for internal comparators, ramp generators, and RESET output sink current |
| 4 - VCC | Power supply input | Supplies internal circuitry and enables VCC-supply monitoring; functional down to 1.2V (min spec) |
| 5 - RESET | Active-low open-drain reset output | Drives low during reset conditions; requires external pullup; sinks ≥50µA at VOL ≤ 0.4V (VCC ≥ 4.5V) |
| 6 - SWT | Slow watchdog timeout capacitor connection | Connects to GND via CSWT (100–1500pF); sets tWD2 using 0.65×10⁹ × CSWT formula |
| 7 - SRT | Reset timeout capacitor connection | Connects to GND via CSRT (100–1500pF); sets tRP using 5.06×10⁶ × CSRT formula |
| 8 - WDI | Watchdog input signal | Falling-edge sensitive; resets watchdog timer on transition; ignored during RESET assertion |
Key Features
| Feature | Design Value |
|---|---|
| Window watchdog timer | Detects both fast faults (WDI pulses too frequent) and slow faults (WDI pulses too infrequent) - prevents runaway code and stuck states |
| Capacitor-adjustable timeouts | Independent SRT and SWT pins enable precise, board-level tuning of reset and watchdog delays without firmware changes |
| Automotive temperature grade | –40°C to +125°C operation validated across full range - eliminates derating for engine bay or transmission control modules |
| Low-power operation | 3.7 µA typical ICC at VCC ≤ 2.0V - extends battery life in always-on telematics and gateway ECUs |
| Open-drain RESET output | Supports mixed-voltage systems: pullup to 3.3V, 5V, or 12V rail while monitoring 1.575V VCC - simplifies multi-rail reset coordination |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
|
Use Scenario: Real-time monitoring of dual-core MCU in gasoline direct injection ECU where software lockup must trigger immediate shutdown and restart. IC Role / Device Role / Timing Role: Window watchdog enforces strict execution timing on safety-critical control loops; 1.575V VCC threshold guards against 1.8V rail collapse during cranking. Use Value: Prevents undetected MCU hang during transient voltage sags; tWD1/tWD2 window rejects spurious noise while catching true timing violations. |
Use Scenario: Supervision of vision processor in lane-departure warning module operating continuously in hot under-hood environment. IC Role / Device Role / Timing Role: Open-drain RESET interfaces to 3.3V processor reset pin while powered from 1.575V monitored rail; –40°C to +125°C rating ensures reliability at peak ambient. Use Value: Guarantees deterministic reset behavior across full automotive temperature range without external conditioning circuitry. |
| Electric Power Steering (EPS) Controller | Vehicle Telematics Gateway |
|
Use Scenario: Monitoring torque-control MCU subjected to high EMI and load-dump transients in EPS motor driver assembly. IC Role / Device Role / Timing Role: Power-supply transient immunity rejects <50µs glitches at 100mV overdrive; manual reset capability enables service-mode reinitialization. Use Value: Eliminates false resets during load dump events while maintaining fail-safe response to actual brownouts. |
Use Scenario: Always-on cellular modem subsystem requiring low-quiescent supervision to preserve 12V battery during parking mode. IC Role / Device Role / Timing Role: 3.7 µA supply current enables >10-year battery hold-up; capacitor-adjustable tRP accommodates variable boot-time requirements across modem firmware versions. Use Value: Reduces parasitic drain without sacrificing reset timing precision or watchdog coverage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6752KA16 | Push-pull RESET output; identical VTH, tRP, tWD2, and tWD1 specs; lacks SET1 pin - fixed 8× window ratio | Suitable for cost-sensitive designs needing simpler watchdog configuration and no level-shifting requirement | Select MAX6752KA16 when open-drain flexibility is unnecessary and PCB layout favors push-pull drive |
| TLV803EB16DBVR | Fixed 1.6V reset threshold; no watchdog; 3.5 µA ICC; SOT23-5 package; no capacitor-adjustable timing | Applicable only for basic reset-only functions in non-safety-critical modules with static timing needs | Choose TLV803EB16DBVR for space-constrained, low-complexity applications where watchdog functionality is omitted |
Compared with MAX6753KA16, MAX6752KA16 offers identical supervision accuracy but sacrifices watchdog configurability and level-shifting capability, while TLV803EB16DBVR reduces feature set to basic reset only - making MAX6753KA16 the sole option supporting full window watchdog operation with open-drain interface in SOT23-8.
Availability
MAX6753KA16 is available at Aetrix Electronics and suitable for automotive engine control, ADAS domain controllers, electric power steering systems, and telematics gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6753KA16 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX6746–MAX6753 family delivers automotive-grade µP supervision with capacitor-tunable timing and window watchdog functionality - engineered specifically for safety-critical vehicle subsystems requiring deterministic reset behavior under voltage transients and thermal stress.
FAQ
What is the factory-trimmed reset threshold voltage for MAX6753KA16?
The MAX6753KA16 features a factory-trimmed VCC reset threshold of 1.575V with ±2% tolerance over –40°C to +125°C. This value is confirmed in Table 2 of the official datasheet, where suffix "16" maps directly to 1.575V nominal. The device does not monitor RESET IN for this variant - its supervision is VCC-only, consistent with MAX6752/MAX6753 family designation.
How do I configure the window watchdog timeout periods on MAX6753KA16?
Configure the MAX6753KA16 window watchdog by connecting a capacitor (CSWT) from pin 6 (SWT) to GND to set tWD2, then strapping pins 1 (SET0) and 2 (SET1) to VCC or GND to select tWD1 as 8×, 16×, or 64× tWD2. For example, CSWT = 100pF yields tWD2 ≈ 64.77ms; with SET0=LOW/SET1=LOW, tWD1 ≈ 8.09ms - defining the valid WDI pulse window.
Does MAX6753KA16 support manual reset functionality?
No, MAX6753KA16 does not include a manual reset (MR) input. Per the Selector Guide and Pin Configurations, MR is present only on MAX6746/MAX6747 variants. MAX6753KA16 relies solely on VCC monitoring, WDI window violation, and power-on reset - consistent with its role as a dedicated window watchdog supervisor in automated safety systems.
What is the minimum VCC required for guaranteed RESET output validity on MAX6753KA16?
MAX6753KA16 guarantees correct RESET logic state for VCC ≥ 1V, as specified in the Electrical Characteristics table. Below 1V, RESET sinking capability degrades; however, the device remains functional down to VCC = 1.2V (absolute min), and the open-drain output can be pulled up externally to maintain defined logic levels even during deep brownout.
Can MAX6753KA16 monitor two independent supply voltages simultaneously?
No, MAX6753KA16 monitors only the VCC supply voltage using its factory-trimmed 1.575V threshold. Dual-voltage monitoring (VCC + external RESET IN) is exclusive to MAX6750/MAX6751 variants. The MAX6753KA16 pinout omits RESET IN and MR, confirming its single-supply, window-watchdog-focused architecture.
MAX6753KA16 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.575V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 5.692ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX6753KA16 FAQ
1.How can I place an order for MAX6753KA16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6753KA16 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX6753KA16 reliable?
The price and inventory of MAX6753KA16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6753KA16 is usually 5 days.
3.What payment methods are accepted for MAX6753KA16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6753KA16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6753KA16?
MAX6753KA16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6753KA16 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX6753KA16?
For technical support, including MAX6753KA16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6753KA16 requirements.
6.How does Aetrix verify that MAX6753KA16 is sourced from the original manufacturer or authorized distributors?
All MAX6753KA16 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX6753KA16 meets industry standards.
7.What is the process for return or replacement of MAX6753KA16?
All MAX6753KA16 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6753KA16, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX6753KA16 part is unused and in its original packaging.
Return procedure for MAX6753KA16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6753KA16 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
