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Analog Devices Inc./Maxim Integrated MAX800MCPE
- Part No.:
- MAX800MCPE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX800MCPE.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,626
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Product details
Overview
MAX800MCPE from Maxim Integrated is a microprocessor supervisory circuit designed for critical 5V power monitoring and battery-backed system reset control. It features a 4.4V typical reset threshold, 200ms power-up reset timeout, 30μA operating supply current, and guaranteed RESET assertion down to VCC = 1V. It is used in industrial controllers and intelligent instruments requiring reliable brownout protection and nonvolatile memory write protection.
For engineers reviewing the MAX800MCPE datasheet, MAX800MCPE pinout, MAX800MCPE application, or MAX800MCPE equivalent, this page delivers verified technical context, real-world timing behavior, battery switchover accuracy (±2%), chip-enable gating performance (6–10ns propagation), and validated alternative options for 5V μP supervision.
Technical Context
The MAX800MCPE implements dual-reset outputs (active-low RESET and active-high RESET), a dedicated watchdog timer with selectable timeout (100ms/1.6s), and an internal oscillator or external clock option via OSC SEL/OSC IN. Its battery switchover comparator activates when VCC falls below VBATT − 0.3V and remains valid down to VBATT = 2.0V.
It integrates chip-enable signal gating with 75Ω on-resistance and ≤10ns propagation delay (50Ω source, 50pF load), plus a standalone power-fail comparator (PFI/PFO) with 1.25V threshold and ±25nA leakage - all operating across −40°C to +85°C in 16-pin plastic DIP packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.40V typical; ensures reliable reset assertion during 5V supply brownout down to 4.25V min. |
| Reset Timeout (Power-up) | 200ms typical; provides sufficient hold time for μP initialization before release. |
| Supply Current (Operating) | 30μA typical; enables low-power operation without compromising supervision integrity. |
| Battery Switchover Accuracy | ±2% guaranteed; supports precise backup activation for MaxCap®/SuperCap™ systems. |
| CE Propagation Delay | 6–10ns max; preserves timing margins for high-speed CE-driven RAM/EEPROM access. |
| RESET Validity Range | VCC ≥ 1V; maintains functional reset signaling even during deep undervoltage conditions. |
| Power-Fail Comparator Threshold | 1.25V ±0.025V; enables accurate low-battery or early power-fail warning with <25nA input leakage. |
Pinout & Package
MAX800MCPE is housed in a 16-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin spacing is 0.1 inch; lead finish is leaded (Pb) unless specified with '+' suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VBATT | Battery-Backup Input | Connects to backup capacitor/battery; enables VOUT sourcing from VBATT when VCC drops below reset threshold and VBATT. |
| 2 VOUT | Output Supply Voltage | Primary system supply output; switches between VCC and VBATT; requires 0.1µF decoupling to GND. |
| 3 VCC | Main 5V Supply Input | Regulated 5V input (4.5–5.5V range); powers internal circuitry and drives VOUT via PMOS switch. |
| 4 GND | Ground Reference | 0V reference for all analog/digital functions; must be low-impedance connection. |
| 5 BATT ON | Battery-On Status Output | Open-drain logic-high indicator when VOUT sourced from VBATT; sinks 3.2mA at 0.1V saturation. |
| 6 LOW LINE | Reset Threshold Comparator Output | Buffered inverted reset signal; asserts low when VCC < 4.4V; used for system status monitoring. |
| 7 OSC IN | External Oscillator Input | Accepts timing capacitor or external clock; sets watchdog/reset timeout when OSC SEL = GND. |
| 8 OSC SEL | Oscillator Select Input | Drives internal oscillator (floating/high) or enables external timing (low); has 10µA internal pull-up. |
| 9 PFI | Power-Fail Input | Noninverting input to uncommitted comparator; triggers PFO low when voltage < 1.25V. |
| 10 PFO | Power-Fail Output | Open-drain comparator output; sinks 3.2mA at 0.1V; independent of reset/watchdog logic. |
| 11 WDI | Watchdog Input | Three-level input (high/low/floating); resets watchdog timer on edge/pulse ≥100ns; floating disables function. |
| 12 CE OUT | Chip-Enable Output | Gated CE signal; enabled only when CE IN low and VCC > reset threshold; pulled to VOUT when disabled. |
| 13 CE IN | Chip-Enable Input | High-impedance when reset asserted; series 75Ω resistance when enabled; connects to μP CE line. |
| 14 WDO | Watchdog Output | Asserts low on watchdog timeout; returns high on next WDI transition; 2×TTL drive capability. |
| 15 RESET | Active-Low Reset Output | Open-drain output; sinks 3.2mA at 0.1V; guaranteed active down to VCC = 1V. |
| 16 RESET | Active-High Reset Output | Open-drain inverse of RESET; high-impedance when inactive; pulled to VOUT when asserted. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Reset Outputs | Simultaneous active-low and active-high RESET signals ensure compatibility with both μP reset polarity requirements. |
| Battery Switchover Accuracy | ±2% tolerance guarantees predictable transition between main supply and backup source under varying temperature/load. |
| Chip-Enable Gating | Sub-10ns CE propagation delay prevents spurious writes to CMOS RAM during power failure or brownout events. |
| Watchdog Timeout Flexibility | Selectable 100ms or 1.6s timeout via OSC SEL pin enables optimization for fast-recovery or long-interval supervision. |
| Power-Fail Comparator Independence | Uncommitted PFI/PFO pair allows custom low-battery detection or early power-loss warning without affecting reset behavior. |
Applications
| Industrial Controller Supervision | Intelligent Instrument Power Management |
|---|---|
Use Scenario: PLC or motion controller maintaining state during AC mains interruption using supercapacitor backup. IC Role / Device Role / Timing Role: Supervisory IC providing VCC brownout detection, battery switchover control, and RAM write protection. Use Value: Ensures deterministic reset behavior and data retention during 200ms+ hold-up time with ±2% switchover accuracy. |
Use Scenario: Portable test equipment with lithium coin cell backup sustaining real-time clock and calibration memory. IC Role / Device Role / Timing Role: Dual-reset generator and watchdog supervisor enabling safe shutdown and restart after power recovery. Use Value: Guarantees RESET validity down to VCC = 1V and supports low-leakage battery mode (<1μA standby). |
| Critical μP Power Monitoring | Computers with Nonvolatile Memory Protection |
Use Scenario: Embedded medical device requiring fail-safe boot sequence and continuous power integrity verification. IC Role / Device Role / Timing Role: Primary power monitor asserting RESET on VCC dip <4.4V and enabling watchdog-triggered recovery. Use Value: Delivers 200ms reset timeout and 1.6s watchdog period-validated across −40°C to +85°C operating range. |
Use Scenario: Industrial PC BIOS module protecting CMOS RAM against corruption during unexpected power loss. IC Role / Device Role / Timing Role: CE signal gate preventing erroneous writes while asserting RESET during undervoltage. Use Value: Integrates 75Ω CE transmission gate with ≤10ns delay to preserve memory access timing integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX800LCPE | 4.65V reset threshold (vs. 4.4V); identical pinout, timing, and feature set. | Suitable for systems requiring higher reset threshold to tolerate 5% VCC tolerance (e.g., 4.75–5.25V rails). | Select MAX800LCPE when main supply nominal is 5.0V ±0% and tighter brownout margin is needed. |
| TPS3823MPW | Single active-low RESET output; no RESET, no CE gating; 4.4V threshold; 200ms timeout; 25μA quiescent current. | Lacks battery switchover, watchdog, and CE control-intended for simpler reset-only use cases. | Choose TPS3823MPW only if CE gating, dual reset, or backup management are not required. |
Compared with MAX800MCPE, MAX800LCPE offers identical functionality with higher reset threshold for tighter 5V rail tolerance, while TPS3823MPW reduces cost and complexity by omitting battery switchover, watchdog, and CE gating-making it suitable only for basic reset supervision.
Availability
MAX800MCPE is available at Aetrix Electronics and suitable for industrial controllers, intelligent instruments, critical μP power monitoring, and computers requiring stable component supply with full lifecycle support.
Supply support for MAX800MCPE 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 computing applications.
The MAX800M series targets 5V microprocessor supervision with integrated battery switchover, watchdog, and CE gating-optimized for systems needing robust power integrity and nonvolatile memory protection in extended temperature environments.
FAQ
What is the reset threshold voltage of the MAX800MCPE?
The MAX800MCPE has a typical reset threshold voltage of 4.40V, with a guaranteed range of 4.25V to 4.50V over temperature and supply variation. This value is confirmed in the Electrical Characteristics table of the official datasheet and applies specifically to the MAX800M variant, distinguishing it from the 4.65V threshold of the MAX800L family. The MAX800MCPE maintains this specification across its −40°C to +85°C operating range.
Does the MAX800MCPE support battery backup operation?
Yes, the MAX800MCPE supports battery backup operation via its VBATT pin. It automatically switches VOUT from VCC to VBATT when VCC falls below both the reset threshold (4.4V) and VBATT − 0.3V. In battery-backup mode, the device draws ≤1μA from VBATT, guarantees RESET assertion, and maintains PFI/PFO comparator functionality for VCC ≥ VBATT − 1.2V. This behavior is explicitly documented in Table 2 and the Battery-Backup Mode section.
How does the watchdog function work on the MAX800MCPE?
The MAX800MCPE watchdog monitors the WDI pin: if WDI remains static (high or low) longer than the selected timeout (100ms or 1.6s), WDO goes low and both RESET outputs assert for 200ms. A ≥100ns pulse or edge on WDI resets the timer. Leaving WDI floating disables the watchdog via internal 1.6V biasing. This behavior is fully detailed in the Watchdog Function and Watchdog Input sections of the datasheet.
Can the MAX800MCPE be used with a 3.3V microprocessor?
No, the MAX800MCPE is designed exclusively for 5V systems: its VCC operating range is 4.5V to 5.5V, reset threshold is fixed at ~4.4V, and all outputs (RESET, WDO, PFO) are referenced to VOUT/VCC-not a separate logic supply. Using it with a 3.3V μP would result in invalid reset signaling and potential damage due to overvoltage on inputs. For 3.3V supervision, consider the MAX63xx or TPS380x families instead.
What package type is the MAX800MCPE supplied in?
The MAX800MCPE is supplied in a 16-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole leads. This is confirmed in the Ordering Information table, where "CPE" suffix denotes the plastic DIP variant rated for −40°C to +85°C operation. It is not available in SO or TSSOP packages under this part number.
MAX800MCPE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.4V
- 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX800MCPE FAQ
1.How can I place an order for MAX800MCPE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX800MCPE 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 MAX800MCPE reliable?
The price and inventory of MAX800MCPE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX800MCPE is usually 5 days.
3.What payment methods are accepted for MAX800MCPE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX800MCPE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX800MCPE?
MAX800MCPE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX800MCPE 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 MAX800MCPE?
For technical support, including MAX800MCPE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX800MCPE requirements.
6.How does Aetrix verify that MAX800MCPE is sourced from the original manufacturer or authorized distributors?
All MAX800MCPE 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 MAX800MCPE meets industry standards.
7.What is the process for return or replacement of MAX800MCPE?
All MAX800MCPE units undergo pre-shipment inspection (PSI). If there is an issue with MAX800MCPE, 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 MAX800MCPE part is unused and in its original packaging.
Return procedure for MAX800MCPE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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