My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX792SEPE+
- Part No.:
- MAX792SEPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX792SEPE+.pdf
- Description:
- IC SUPERVISOR MPU 16-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,095
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX792SEPE+ from Maxim Integrated is a microprocessor supervisory circuit providing reset generation, manual reset input, two-stage power-fail warning (low-line output 120mV above reset threshold), watchdog timer with pulsed fault warning (WDPO), and chip-enable gating for CMOS RAM protection. It guarantees valid RESET output down to VCC = 1V and supports external reset/low-line threshold programming via resistor divider. Used in embedded controllers and critical µP power monitoring systems.
For engineers reviewing the MAX792SEPE+ datasheet, MAX792SEPE+ pinout, MAX792SEPE+ application, or MAX792SEPE+ equivalent, this page delivers verified functional identity, confirmed 16-pin narrow SO package mapping, validated 200ms reset timeout and ±2% threshold accuracy (in MAX820 variant), real-world CE gating behavior, and two manufacturer-confirmed alternative parts with documented technical differences.
Technical Context
The MAX792SEPE+ integrates five independent monitoring functions: a precision reset comparator with hysteresis, a low-line comparator referenced to the same internal 1.30V bandgap, a programmable watchdog timer (1.6s nominal timeout, adjustable via SWT capacitor), an overvoltage comparator (OVI/OVO), and a bidirectional chip-enable transmission gate with 10ns max propagation delay. All comparators share a common reference architecture.
It operates in two mutually exclusive modes: internal threshold mode (RESET IN/INT ≤60mV, using factory-trimmed 1.30V reference) and external programming mode (RESET IN/INT ≥600mV, enabling user-defined thresholds via external resistor divider). The device asserts RESET and LOW LINE outputs asynchronously on VCC drop, with guaranteed timing across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 2.91V nominal (S-suffix), ±2.5% tolerance over temperature - sets precise brownout detection point for 3V systems. |
| Power-On Reset Delay | 200ms typical - ensures µP remains held in reset long enough for power supply stabilization and oscillator startup. |
| Watchdog Timeout Period | 1.6s nominal (SWT tied to VCC) - provides sufficient time for firmware execution loops while detecting hangs. |
| Chip-Enable Propagation Delay | 10ns maximum - enables safe gating of high-speed memory CE signals without violating setup/hold timing. |
| Supply Current | 150µA maximum at +85°C - minimizes impact on system standby power budget. |
| Operating Temperature Range | –40°C to +85°C (E-grade) - qualified for industrial control and automotive under-hood environments. |
| RESET Output Validity | Guaranteed down to VCC = 1V - ensures fail-safe reset assertion even during deep brownout or battery sag. |
Pinout & Package
MAX792SEPE+ is housed in a 16-pin narrow SO (Small Outline) package, 3.9mm body width, 1.27mm pitch, RoHS-compliant lead-free finish (+ suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | RESET / RESET | Complementary active-low and active-high reset outputs; RESET sinks 1.6mA at 0.1V, valid to VCC = 1V. |
| 3 | VCC | Main supply input (2.75V to 5.5V); powers all internal circuits and drives outputs. |
| 4 | RESET IN/INT | Mode select: ≤60mV → internal threshold mode; ≥600mV → external programming mode. |
| 5 | LLIN/REFOUT | In external mode: low-line comparator input; in internal mode: buffered 1.30V reference output. |
| 6 | OVO | Open-drain overvoltage comparator output; pulls low when OVI > 1.30V. |
| 7 | OVI | Inverting input of uncommitted overvoltage comparator; connect to GND if unused. |
| 8 | SWT | Watchdog timeout programming node; capacitor to GND sets timeout (k × C, k=16.2 @5V). |
| 9 | MR | Manual reset input; internally pulled up, 1.30V threshold, 25µs minimum pulse width. |
| 10 | LOW LINE | Active-low NMI output; asserts 120mV above reset threshold in internal mode. |
| 11 | WDI | Watchdog input; transition resets timer; no activity >1.6s triggers WDPO/WDO assertion. |
| 12 | GND | Ground reference for all analog and digital circuitry. |
| 13 | CE OUT | Active-low chip-enable output; gated by CE IN and reset state; 15µs hold time on reset deassertion. |
| 14 | CE IN | Chip-enable input; transmission gate passes signal only when reset is inactive. |
| 15 | WDO | Watchdog fault output; open-drain, asserts low after WDPO pulse on timeout; returns high on WDI edge. |
| 16 | WDPO | Watchdog pulse output; 1.7ms low pulse preceding WDO by 70ns - enables hardware shutdown latching. |
Key Features
| Feature | Design Value |
|---|---|
| Two-stage power-fail warning | LOW LINE asserts 120mV above reset threshold, giving µP advance NMI warning before reset occurs. |
| Pulsed watchdog output (WDPO) | Generates 1.7ms logic-low pulse 70ns before WDO - enables reliable two-fault latching via D flip-flop. |
| On-board chip-enable gating | 10ns max CE IN→CE OUT delay prevents RAM corruption during brownout by blocking CE during reset. |
| Memory write-cycle completion | CE OUT holds low for 15µs after reset deassertion if CE IN was low, ensuring final RAM write completes. |
| Voltage monitor for overvoltage | OVI/OVO pair provides independent overvoltage detection (1.30V threshold) with no effect on other functions. |
Applications
| Industrial PLC Controller | Medical Diagnostic Instrument |
|---|---|
|
Use Scenario: Programmable logic controller operating in factory-floor environments with fluctuating 24VDC-derived 5V rails. IC Role / Device Role / Timing Role: Supervises 5V supply, asserts LOW LINE NMI at 4.8V (120mV above 4.62V reset), then RESET at 4.62V to halt CPU before undervoltage lockup. Use Value: Prevents spurious I/O writes during brownout by gating CE signals and ensures deterministic restart via 200ms reset hold. |
Use Scenario: Portable ultrasound unit powered by Li-ion battery with regulated 3.3V rail subject to load transients. IC Role / Device Role / Timing Role: Monitors 3.3V rail using internal 2.91V reset threshold (S-suffix); asserts RESET at 2.91V and LOW LINE at 3.03V to trigger graceful shutdown sequence. Use Value: Guarantees RESET validity down to VCC = 1V, enabling safe state capture even during rapid battery depletion. |
| Telecom Base Station Management | Automotive Body Control Module |
|
Use Scenario: Remote radio unit requiring watchdog supervision of ARM-based management MCU. IC Role / Device Role / Timing Role: WDI connected to GPIO toggle; WDPO pulses every 1.6s if firmware stalls, latching hardware shutdown via external D flip-flop. Use Value: WDPO's 70ns lead over WDO ensures clean clocking of external latch, eliminating race conditions in fail-safe shutdown. |
Use Scenario: BCM operating in –40°C to +125°C ambient with 5V supply derived from vehicle battery. IC Role / Device Role / Timing Role: Uses external programming mode with resistor divider to set 4.37V reset threshold (M-suffix) and 4.49V low-line threshold for early warning. Use Value: Enables precise threshold tuning to match automotive voltage tolerances, avoiding nuisance resets during cold cranking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX820SEPE+ | Guarantees ±2% reset/low-line threshold accuracy (vs. ±2.5% for MAX792); identical pinout, timing, and feature set. | Suitable where tighter voltage-monitoring tolerance is required for safety-critical brownout response. | Select MAX820SEPE+ when design requires certified threshold accuracy per IEC 61508 SIL-2 or similar standards. |
| TPS3823-33DBVR | Single-supply 3.3V fixed-threshold supervisor (3.08V); no low-line output, no WDPO, no CE gating; SOT-23-5 package. | Limited to basic reset-only applications; lacks dual-voltage warning, memory protection, and watchdog pulsing. | Choose TPS3823-33DBVR only for space-constrained, cost-sensitive designs needing only 3.3V reset with no advanced features. |
Compared with MAX792SEPE+, MAX820SEPE+ offers higher threshold accuracy without changing layout or firmware, while TPS3823-33DBVR reduces functionality and package size but eliminates critical features like low-line warning and CE gating required for robust memory supervision.
Availability
MAX792SEPE+ is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic instruments, telecom base station management units, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX792SEPE+ 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 and mixed-signal ICs for industrial, automotive, and communications applications, with emphasis on reliability and integration.
The MAX792/MAX820 product line was engineered specifically for microprocessor supervisory functions in systems without battery backup - delivering coordinated reset, watchdog, low-line warning, and memory protection in a single 16-pin IC.
FAQ
What is the exact reset threshold voltage for MAX792SEPE+?
The MAX792SEPE+ has a nominal reset threshold voltage of 2.91V, corresponding to the 'S' suffix in the part number. This value is factory-trimmed and specified with ±2.5% tolerance over the full –40°C to +85°C operating range. The actual threshold is guaranteed between 2.85V and 2.96V at +25°C during VCC falling, per the official Maxim datasheet revision 4.
Does MAX792SEPE+ support external reset threshold programming?
Yes, MAX792SEPE+ supports external reset threshold programming via the RESET IN/INT and LLIN/REFOUT pins. When RESET IN/INT is biased above 600mV, the device enters external programming mode and disconnects from its internal 1.30V reference, allowing user-defined thresholds using a resistor divider network as detailed in Figure 4b of the MAX792/MAX820 datasheet.
What is the function of the WDPO pin on MAX792SEPE+?
The WDPO (Watchdog Pulse Output) pin on MAX792SEPE+ delivers a 1.7ms low-going pulse 70ns before WDO asserts during a watchdog timeout event. This precise timing enables reliable hardware latching of consecutive faults using an external D flip-flop, as shown in Figure 8 of the datasheet - a key safety mechanism not available with standard watchdog outputs.
Can MAX792SEPE+ be used to protect CMOS RAM during power-down?
Yes, MAX792SEPE+ provides dedicated chip-enable (CE) signal gating to protect CMOS RAM. Its CE IN to CE OUT transmission gate disables during reset assertion, blocking erroneous writes. If CE IN is low when reset activates, CE OUT remains low for 15µs to complete the current write cycle - a feature explicitly designed for safe nonvolatile memory operation.
What is the operating temperature range for MAX792SEPE+?
The MAX792SEPE+ is rated for operation from –40°C to +85°C, indicated by the 'E' grade in the part number prefix. This industrial temperature range is validated per the Absolute Maximum Ratings and Electrical Characteristics tables in the MAX792/MAX820 datasheet, and applies to all electrical parameters including reset timeout, watchdog period, and supply current.
MAX792SEPE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX792SEPE+ FAQ
1.How can I place an order for MAX792SEPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX792SEPE+ 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 MAX792SEPE+ reliable?
The price and inventory of MAX792SEPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX792SEPE+ is usually 5 days.
3.What payment methods are accepted for MAX792SEPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX792SEPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX792SEPE+?
MAX792SEPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX792SEPE+ 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 MAX792SEPE+?
For technical support, including MAX792SEPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX792SEPE+ requirements.
6.How does Aetrix verify that MAX792SEPE+ is sourced from the original manufacturer or authorized distributors?
All MAX792SEPE+ 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 MAX792SEPE+ meets industry standards.
7.What is the process for return or replacement of MAX792SEPE+?
All MAX792SEPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX792SEPE+, 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 MAX792SEPE+ part is unused and in its original packaging.
Return procedure for MAX792SEPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX792SEPE+ 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…
