My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX800LCSE+T
- Part No.:
- MAX800LCSE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX800LCSE+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,765
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX800LCSE+T from Maxim Integrated is a microprocessor supervisory circuit designed for critical 5V power monitoring and system reset control in embedded controllers and intelligent instruments. It features a 4.65V typical reset threshold, 200ms power-up reset timeout, 30μA operating supply current, and guaranteed RESET assertion down to VCC = +1V - enabling reliable brownout protection in battery-backed systems.
For engineers reviewing the MAX800LCSE+T datasheet, MAX800LCSE+T pinout, MAX800LCSE+T application, or MAX800LCSE+T equivalent, this device delivers verified power-fail accuracy (±2%), chip-enable signal gating with ≤10ns propagation delay, and dual active-low/active-high reset outputs for μP reset compatibility across diverse industrial and computing platforms.
Technical Context
The MAX800LCSE+T integrates a precision voltage monitor, watchdog timer with selectable timeout (100ms/1.6s), internal oscillator or external clock support via OSC IN/OSC SEL, and bidirectional VCC/VBATT switchover logic with hysteresis. Its RESET and RESET outputs operate independently: RESET is open-drain active-low, RESET is active-high open-drain, both valid down to VCC = 1V.
It provides on-chip CE signal gating (CE IN → CE OUT) with 75Ω on-resistance and <10ns propagation delay under 50pF load, plus a dedicated power-fail comparator (PFI/PFO) with 1.25V threshold and ±25nA input leakage - all implemented in a single 16-pin narrow SO package without requiring external timing components for default operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.65V typical; ensures deterministic μP reset initiation at nominal 5V rail collapse. |
| Reset Timeout | 200ms typical after power-up; meets JEDEC JESD78 latch-up immunity timing requirements. |
| Supply Current | 30μA typical operating; enables low-power always-on supervision in battery-backed memory systems. |
| Power-Fail Accuracy | ±2% guaranteed; supports precise low-battery warning and early power-fail detection. |
| CE Propagation Delay | ≤10ns max; preserves timing integrity for high-speed μP CE signals without added gate delay. |
| VCC-to-VOUT On-Resistance | 0.8–1.2Ω (MAX800_C); sustains ≤250mA continuous load with <200mV dropout at full current. |
| VBATT Switchover Hysteresis | 60mV; prevents oscillation during marginal VCC/VBATT transitions in backup mode. |
Pinout & Package
MAX800LCSE+T is housed in a 16-pin narrow SOIC (SO) package with standard 1.27mm pitch, RoHS-compliant lead-free finish (+T suffix), and thermal performance rated for 696mW dissipation at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VBATT | Battery-backup input | Accepts 2.0–5.5V backup source; enables seamless switchover when VCC falls below reset threshold. |
| 2 VOUT | Output supply voltage | Switched output sourced from VCC or VBATT; powers downstream logic and serves as reference for internal comparators. |
| 3 VCC | Main 5V supply input | Regulated 4.75–5.5V input; monitored for reset assertion and CE gating enable/disable control. |
| 4 GND | Ground reference | 0V return for all analog and digital functions; decoupling capacitor required between VOUT and GND. |
| 5 BATT ON | Battery-on status indicator | Active-high open-drain output signaling VBATT is active; drives PNP base for >250mA external pass transistors. |
| 6 LOW LINE | Reset comparator buffered output | Active-low indication of VCC < reset threshold; used for system status LEDs or interrupt generation. |
| 7 OSC IN | External oscillator/clock input | Configurable timing node: accepts capacitor (for RC oscillator) or external clock (1024–4096 cycles) to set watchdog/reset periods. |
| 8 OSC SEL | Oscillator select control | Logic input selecting internal oscillator (floating/high) or external timing (low); includes 10µA internal pull-up. |
| 9 PFI | Power-fail comparator noninverting input | Monitors auxiliary rail (e.g., 3.3V or battery); triggers PFO when voltage drops below 1.25V ±2%. |
| 10 PFO | Power-fail comparator output | Open-drain active-low output; independent of reset logic - used for low-battery alerts or secondary power sequencing. |
| 11 WDI | Watchdog input | Three-level input (high/mid/low); resets watchdog timer on any transition ≥100ns; floating disables watchdog. |
| 12 CE OUT | Chip-enable gated output | Passes CE IN only when VCC > reset threshold; blocks spurious writes during power failure or brownout. |
| 13 CE IN | Chip-enable gated input | High-impedance during reset; series 75Ω resistance in enabled mode; requires external pull-down if unused. |
| 14 WDO | Watchdog output | Active-low open-drain output asserting on watchdog timeout; synchronizes with RESET/RESET pulses. |
| 15 RESET | Active-low reset output | Open-drain, sinks 3.2mA @ 0.1V; guaranteed functional down to VCC = 1V; requires external pull-up. |
| 16 RESET | Active-high reset output | Open-drain, sources 1.6mA @ VOUT − 0.5V; inverse of RESET; valid in battery-backup mode. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RESET down to VCC = +1V | Enables robust brownout recovery in systems where main supply collapses gradually - no external reset IC needed. |
| ±2% power-fail comparator accuracy | Supports precise low-battery detection and predictive power-loss warnings without calibration or trimming. |
| On-chip CE signal gating (≤10ns delay) | Prevents corrupted writes to CMOS RAM/EEPROM during power transients - eliminates need for external logic gates. |
| Dual active-low/active-high reset outputs | Direct interface to μPs requiring either polarity reset input - avoids level-shifter or inverter components. |
| MaxCap®/SuperCap-compatible backup switchover | Supports high-capacitance (>0.47F) backup sources with controlled inrush and low quiescent drain (<1μA). |
Applications
| Industrial Controller Reset Management | Intelligent Instrument Power Supervision |
|---|---|
|
Use Scenario: PLC or motion controller maintaining real-time state during AC line sags or battery switchover. IC Role / Device Role / Timing Role: Supervisory circuit asserting RESET for 200ms after VCC recovers above 4.65V, while blocking CE signals to prevent RAM corruption. Use Value: Eliminates firmware crash on partial brownouts; guarantees deterministic restart without external timing capacitors. |
Use Scenario: Portable multimeter or data logger using supercapacitor backup to retain calibration and measurement history. IC Role / Device Role / Timing Role: Dual-role supervisor: monitors main 5V rail for reset, switches VOUT to VBATT when VCC drops, and asserts BATT ON to signal backup activation. Use Value: Enables >10-year backup retention with <1μA standby current; ±2% PFI accuracy ensures accurate low-battery alert before data loss. |
| Critical μP Power Monitoring | Computer System Health Monitoring |
|
Use Scenario: Medical diagnostic equipment requiring fail-safe boot sequence and watchdog-triggered recovery on processor lockup. IC Role / Device Role / Timing Role: Watchdog timer with 1.6s timeout monitors WDI toggling; asserts RESET/RESET and WDO on fault, initiating hardware reset without software intervention. Use Value: Meets IEC 62304 Class C safety requirements by providing independent hardware-level fault recovery. |
Use Scenario: Embedded PC motherboard monitoring 5V standby and main rails for BIOS integrity and fan control stability. IC Role / Device Role / Timing Role: Simultaneous supervision of VCC (reset), PFI (3.3V rail), and CE gating (memory controller); uses LOW LINE for OS-level power-fail interrupt. Use Value: Consolidates three discrete monitoring functions into one IC - reduces BOM count and PCB area vs. discrete comparators + timers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX691ACSE+ | Same 4.65V reset threshold and 200ms timeout, but lacks guaranteed ±2% power-fail accuracy and has higher 100μA operating current. | Not suitable for precision low-battery detection; acceptable for basic reset-only use cases without PFI/PFO reliance. | Select MAX691ACSE+ only if cost sensitivity outweighs need for certified power-fail accuracy and ultra-low current. |
| TPS3823-46DBVR | Fixed 4.63V reset threshold, 200ms timeout, 12μA supply current, but no CE gating, no dual RESET outputs, and no PFI/PFO comparator. | Limited to simple reset generation; cannot replace MAX800LCSE+T in systems requiring memory write protection or auxiliary rail monitoring. | Choose TPS3823-46DBVR only for minimal footprint designs where CE gating and power-fail warning are unnecessary. |
Compared with MAX691ACSE+, the MAX800LCSE+T adds ±2% PFI accuracy and cuts operating current by 70%; versus TPS3823-46DBVR, it delivers integrated CE protection and dual-rail monitoring - making it the sole option supporting full-system supervision in space-constrained industrial controllers.
Availability
MAX800LCSE+T is available at Aetrix Electronics and suitable for industrial controllers, intelligent instrumentation, and critical μP power monitoring applications requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance.
Supply support for MAX800LCSE+T 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX800L family was engineered specifically for robust, low-power microprocessor supervision in mission-critical embedded systems - integrating reset, watchdog, power-fail detection, and memory write protection in a single compact package.
FAQ
What is the reset threshold voltage of the MAX800LCSE+T?
The MAX800LCSE+T has a typical reset threshold voltage of 4.65V, with a guaranteed range of 4.50V to 4.75V over temperature and supply variations. This value is factory-trimmed and applies specifically to the MAX800L variant; the MAX800M version uses a 4.40V threshold. The threshold hysteresis is 15mV, preventing chatter near the trip point.
Does the MAX800LCSE+T support battery backup switching?
Yes, the MAX800LCSE+T supports automatic battery backup switching via its VBATT and VOUT pins. When VCC falls below the reset threshold and also drops below VBATT (by ≥1.2V), the device switches VOUT to VBATT and asserts BATT ON high. The switchover includes 60mV hysteresis and guarantees VOUT regulation down to VBATT = 2.0V.
Can the MAX800LCSE+T be used without an external timing capacitor?
Yes, the MAX800LCSE+T operates fully functional without an external timing capacitor. Its internal oscillator provides default 200ms reset timeout and 1.6s watchdog timeout when OSC SEL is floating or tied to VOUT. A capacitor at OSC IN is only required to customize timeout periods beyond these defaults.
What is the function of the CE IN and CE OUT pins on the MAX800LCSE+T?
The CE IN and CE OUT pins implement hardware-enforced chip-enable gating: CE OUT passes CE IN signals only when VCC is above the reset threshold. During power failure or reset assertion, CE OUT is disabled to prevent spurious writes to CMOS RAM or EEPROM - a key feature distinguishing the MAX800LCSE+T from basic reset supervisors.
Is the MAX800LCSE+T pin-compatible with older Maxim supervisors?
Yes, the MAX800LCSE+T is pin-compatible with the MAX691A, MAX693A, and MAX695 families in the same 16-pin narrow SO package. It maintains identical pinout, electrical behavior, and footprint - allowing drop-in replacement while delivering improved 30μA supply current, tighter power-fail accuracy (±2%), and enhanced VCC-down-to-1V RESET validity.
MAX800LCSE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.65V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX800LCSE+T FAQ
1.How can I place an order for MAX800LCSE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX800LCSE+T 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 MAX800LCSE+T reliable?
The price and inventory of MAX800LCSE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX800LCSE+T is usually 5 days.
3.What payment methods are accepted for MAX800LCSE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX800LCSE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX800LCSE+T?
MAX800LCSE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX800LCSE+T 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 MAX800LCSE+T?
For technical support, including MAX800LCSE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX800LCSE+T requirements.
6.How does Aetrix verify that MAX800LCSE+T is sourced from the original manufacturer or authorized distributors?
All MAX800LCSE+T 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 MAX800LCSE+T meets industry standards.
7.What is the process for return or replacement of MAX800LCSE+T?
All MAX800LCSE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX800LCSE+T, 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 MAX800LCSE+T part is unused and in its original packaging.
Return procedure for MAX800LCSE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX800LCSE+T 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…
