My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6738XKVD7-T
- Part No.:
- MAX6738XKVD7-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX6738XKVD7-T.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6738XKVD7-T from Maxim Integrated is a low-power dual-voltage microprocessor supervisor IC with one factory-trimmed reset threshold (VTH1 = 2.925V) and one adjustable reset input (RSTIN, 0.488V reference), open-drain active-low RESET output, manual reset input (MR), and 1200ms minimum reset timeout period. It monitors primary I/O supply (VCC1) and secondary core supply (VCC2) in portable battery-powered systems requiring precise dual-rail power integrity.
For engineers reviewing the MAX6738XKVD7-T datasheet, MAX6738XKVD7-T pinout, MAX6738XKVD7-T application, or MAX6738XKVD7-T equivalent, key selection criteria include its SC70-5 package footprint, 6µA quiescent current, ±0.5% reset threshold hysteresis, RSTIN-adjustable monitoring down to 0.5V, and compatibility with bidirectional µP reset interfaces via external pullup.
Technical Context
The MAX6738XKVD7-T implements dual-supply supervision using independent comparators for VCC1 (2.925V factory-trimmed threshold) and VCC2 (user-selectable via RSTIN resistor divider), with internal 0.488V reference enabling monitoring of voltages as low as 0.5V. Its reset assertion logic combines voltage fault detection, MR-triggered reset, and automatic timeout restart on transient recovery.
It features an open-drain RESET output referenced to VCC1 with 500nA leakage when deasserted, 0.4V VOL at 3.2mA sink, and 35µs propagation delay from VCC/RSTIN drop to RESET assertion. The 1200ms timeout (D7 suffix) is temperature-stable with ±1.5% variation over –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.925V ±2.5% (factory-trimmed for I/O rail monitoring) |
| RSTIN Threshold | 0.488V ±1.5% (enables adjustable monitoring of sub-1V supplies) |
| Reset Timeout | 1200ms min (D7 option; ensures reliable µP initialization after brownout) |
| Supply Current | 6µA max (enables >1-year battery life in always-on portable devices) |
| Operating Temp | –40°C to +85°C (supports industrial and automotive cabin environments) |
| Package | 5-pin SC70 (1.6mm × 1.6mm footprint; saves PCB area vs. SOT23) |
| Reset Output | Open-drain active-low (requires external pullup; compatible with 1.8V/3.3V/5V µP I/O) |
Pinout & Package
MAX6738XKVD7-T is housed in a 5-pin SC70-5 package (1.6mm × 1.6mm × 0.9mm), optimized for space-constrained portable designs. Pin 1 is RESET (open-drain active-low), Pin 2 is GND, Pin 3 is MR (active-low manual reset with 1.5kΩ internal pullup to VCC1), Pin 4 is RSTIN (adjustable reset input referenced to 0.488V), and Pin 5 is VCC1 (primary supply input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1: RESET | Open-drain active-low reset output | Asserts low when VCC1 < 2.925V, RSTIN < 0.488V, or MR is pulled low; requires external pullup for logic-high state |
| Pin 2: GND | Ground reference | Common return path for all internal comparators and output drivers; must be low-impedance connection |
| Pin 3: MR | Manual reset input | Active-low signal with 1.5kΩ internal pullup to VCC1; forces RESET low for ≥1µs pulse width and holds for 1200ms timeout |
| Pin 4: RSTIN | Adjustable reset threshold input | Monitors external voltage via resistor divider; asserts RESET when input falls below 0.488V reference |
| Pin 5: VCC1 | Primary supply input | Power source for internal circuitry and RESET output reference; supports 1.2V–5.5V operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring | Simultaneously supervises VCC1 (2.925V fixed) and VCC2 (via RSTIN), eliminating need for two discrete supervisors |
| Ultra-low quiescent current | 6µA max ICC1 enables multi-year battery operation in IoT sensors and wearables |
| Adjustable low-voltage monitoring | RSTIN input with 0.488V reference allows precise monitoring of 0.5V–5.0V rails using standard resistor dividers |
| Glitch-immune reset timing | 35µs propagation delay and 1200ms timeout prevent spurious resets from short transients (<100ns) |
| SC70-5 space efficiency | 1.6mm × 1.6mm footprint reduces PCB area by 40% vs. comparable SOT23-5 solutions |
Applications
| Portable Medical Sensors | Notebook Power Management |
|---|---|
Use Scenario: Continuous glucose monitor with dual 1.8V sensor interface and 0.9V ultra-low-power MCU core. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting RESET if either rail drops during battery discharge or cold-temperature operation. Use Value: Prevents firmware corruption by ensuring both sensor and core supplies stabilize before µP boot, leveraging 1200ms timeout for slow Li-ion voltage ramp-up. | Use Scenario: Dual-voltage notebook motherboard sequencing VCCIO (3.3V) and VCORE (1.1V) during power-up. IC Role / Device Role / Timing Role: Monitors VCCIO with 2.925V threshold and VCORE via RSTIN divider; coordinates safe power-on sequence. Use Value: Enables reliable core initialization by holding RESET until both rails exceed thresholds for full 1200ms, avoiding race conditions in high-speed processors. |
| Industrial Handheld Terminals | GPS Tracking Modules |
Use Scenario: Ruggedized PDA operating from 3.6V Li-ion with 1.2V FPGA core and 2.8V display driver. IC Role / Device Role / Timing Role: Supervises main 3.6V rail (VCC1) and FPGA core (RSTIN-adjusted to 1.2V) with manual reset button support. Use Value: 6µA supply current extends field battery life; MR input enables field technician-initiated recovery without power cycle. | Use Scenario: Asset tracker using GPS receiver (3.3V) and µP (1.8V) powered by coin-cell battery. IC Role / Device Role / Timing Role: Monitors GPS supply (VCC1 = 3.3V) and µP core (RSTIN = 1.8V) while detecting brownout before data loss. Use Value: Adjustable RSTIN threshold ensures accurate 1.8V core supervision; 1200ms timeout guarantees complete GPS warm start before µP resumes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6738XKTD3-T | Same dual-supply architecture and SC70-5 package, but 150ms reset timeout (D3 suffix) instead of 1200ms | Suitable for fast-boot systems where µP requires shorter reset hold time | Select when system boot timing constraints demand <200ms reset assertion |
| TPS3808G18DBVR | TI dual-supervisor with 1.8V fixed VDD1 threshold, 1.2V adjustable VDD2, 200ms timeout, and push-pull RESET | Lacks RSTIN flexibility below 0.5V; uses SOT23-6 package (larger footprint) | Choose for TI-design ecosystems needing push-pull output and tighter 1.2V core tolerance |
Compared with MAX6738XKVD7-T, the D3 variant offers faster reset release for time-critical boot sequences, while TPS3808G18DBVR provides push-pull drive but sacrifices sub-0.5V monitoring capability and increases PCB area by 60%.
Availability
MAX6738XKVD7-T is available at Aetrix Electronics and suitable for portable medical sensors, notebook power management, industrial handheld terminals, and GPS tracking modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6738XKVD7-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) designs precision analog and mixed-signal ICs for power, sensing, and connectivity applications in industrial, medical, and consumer markets.
The MAX6736–MAX6745 family delivers ultra-low-power dual/triple-supply supervision for battery-operated and multirail embedded systems, emphasizing size reduction, extended battery life, and robust voltage monitoring accuracy.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6738XKVD7-T?
The MAX6738XKVD7-T has a factory-trimmed VCC1 reset threshold of 2.925V ±2.5% over the full –40°C to +85°C temperature range. This value is confirmed by the "V" suffix in the part number per Table 2 of the datasheet and applies specifically to the primary I/O supply monitoring function of the MAX6738XKVD7-T.
Does the MAX6738XKVD7-T support monitoring of core supplies below 1.0V?
Yes, the MAX6738XKVD7-T supports sub-1V core supply monitoring via its RSTIN pin, which references an internal 0.488V threshold. By configuring an external resistor divider, users can accurately supervise supplies as low as 0.5V - a capability explicitly documented for the MAX6738XKVD7-T in the Electrical Characteristics table under VTH-RSTIN.
What is the reset timeout period of the MAX6738XKVD7-T and how is it set?
The MAX6738XKVD7-T has a 1200ms minimum reset timeout period, indicated by the "D7" suffix in its part number. This timing is factory-programmed and guaranteed over temperature; it begins after all monitored supplies exceed their thresholds and ensures reliable µP initialization in systems with slow-ramping power supplies.
Can the MAX6738XKVD7-T be used with a bidirectional µP reset pin?
Yes, the MAX6738XKVD7-T's open-drain RESET output is compatible with bidirectional µP reset pins. As specified in the Applications Information section, direct connection is supported - or a 4.7kΩ series resistor can be added to prevent contention when the µP drives the line high, ensuring safe interoperability in the MAX6738XKVD7-T design.
What package type and dimensions does the MAX6738XKVD7-T use?
The MAX6738XKVD7-T uses a 5-pin SC70-5 package measuring 1.6mm × 1.6mm × 0.9mm. This compact outline is confirmed in the Pin Configurations section and Ordering Information tables, making it suitable for space-constrained portable electronics where PCB area is at a premium - a key physical attribute of the MAX6738XKVD7-T.
MAX6738XKVD7-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.575V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1.2s Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
MAX6738XKVD7-T FAQ
1.How can I place an order for MAX6738XKVD7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6738XKVD7-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 MAX6738XKVD7-T reliable?
The price and inventory of MAX6738XKVD7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6738XKVD7-T is usually 5 days.
3.What payment methods are accepted for MAX6738XKVD7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6738XKVD7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6738XKVD7-T?
MAX6738XKVD7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6738XKVD7-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 MAX6738XKVD7-T?
For technical support, including MAX6738XKVD7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6738XKVD7-T requirements.
6.How does Aetrix verify that MAX6738XKVD7-T is sourced from the original manufacturer or authorized distributors?
All MAX6738XKVD7-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 MAX6738XKVD7-T meets industry standards.
7.What is the process for return or replacement of MAX6738XKVD7-T?
All MAX6738XKVD7-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6738XKVD7-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 MAX6738XKVD7-T part is unused and in its original packaging.
Return procedure for MAX6738XKVD7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6738XKVD7-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…
