Part A
MAX6315US26D4+T
Analog Devices Inc./Maxim tích hợp
- Lifecycle
- Active
- Stock
- 6335 PCS
- Package
- SOT-143-4
- Series
- PMIC - Supervisors
Replacement verdict
Not a drop-in replacement
The MAX6315US26D4+T and MAX6301CSA+TG05 are not functionally interchangeable. The MAX6315US26D4+T is a fixed-threshold, open-drain microprocessor supervisor with a 2.63V reset threshold and 1.12s reset timeout in a 4-pin SOT-143 package, while the MAX6301CSA+TG05 is an adjustable-threshold supervisor with a 1.31V reference, programmable reset timeout, and both push-pull and open-drain outputs in an 8-pin SOIC package. The differences in threshold configurability, output architecture, reset timeout programmability, and package footprint prevent direct substitution without circuit redesign.
Different output type
Different threshold configuration
Different reset timeout
Different footprint
Parts at a glance
Part B
MAX6301CSA+TG05
Analog Devices Inc./Maxim tích hợp
- Lifecycle
- Active
- Stock
- 9253 PCS
- Package
- SOIC-8
- Series
- PMIC - Supervisors
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | MAX6315US26D4+T | MAX6301CSA+TG05 | Why it matters |
|---|---|---|---|
| Function | Voltage supervisor (reset output) | Microprocessor supervisory circuit | Determines the core role of the device in a system; a supervisor and a supervisory circuit may not be pin- or function-compatible. |
| Reset Threshold Voltage | 2.63 V (typ) | Adjustable via external resistor divider | The threshold must match the monitored supply rail; a fixed threshold cannot be adjusted to a different rail voltage. |
| Reset Output Type | Open-drain, active-low | Push-pull, active-low | Output topology affects pull-up requirements and logic-level compatibility with the downstream processor. |
| Reset Timeout Delay | Typical 1.12 s (D4 suffix) | Adjustable via external capacitor | The reset delay must be long enough for the processor supply to stabilize; a fixed delay may be too short or too long for a given design. |
| Supply Voltage Range | 1.0 V to 5.5 V | 1.0 V to 5.5 V (VCC) | Both must operate over the system supply range; matching ranges ensure the device functions across the intended rail. |
| Supply Current | Approximately 2.5 µA (typ) | Approximately 4 µA (typ) | Quiescent current affects battery life and power budget in low-power and portable applications. |
| Package | SOT-143 (4-pin) | 8-pin SOIC | Package footprint and pin count determine PCB layout compatibility and whether a direct drop-in replacement is possible. |
| Operating Temperature Range | -40 °C to +125 °C | 0 °C to +70 °C | The temperature range must cover the application environment; industrial or automotive use requires the wider range. |
| Manual Reset Input | Not available | Available | A manual reset input allows external system reset control, which may be required for service or debug functions. |
| Watchdog Timer | Not available | Not available | A watchdog timer monitors processor activity; neither device provides one, so external watchdog circuitry would be needed for both. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | MAX6315US26D4+T | MAX6301CSA+TG05 |
|---|---|---|
| Part Status | Obsolete | Obsolete |
| Type | Simple Reset/Power-On Reset | Simple Reset/Power-On Reset |
| Number of Voltages Monitored | 1 | 1 |
| Voltage - Threshold | 2.63V | Adjustable/Selectable |
| Output | Open Drain or Open Collector | Open Drain or Open Collector |
| Reset | Active Low | Active Low |
| Reset Timeout | 1.12s Minimum | 2.8ms Minimum |
| Operating Temperature | -40°C ~ 125°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the MAX6315US26D4+T and MAX6301CSA+TG05?
The MAX6315US26D4+T is a microprocessor supervisory circuit from Analog Devices (Maxim Integrated) in a 4-pin SOT-143 package, featuring a 2.63V reset threshold and a 1.12s minimum reset timeout. The MAX6301CSA+TG05 is a microprocessor supervisory circuit from Analog Devices (Maxim Integrated) in an 8-pin SOIC package, offering adjustable reset threshold and adjustable reset timeout via external components.
Can the MAX6315US26D4+T and MAX6301CSA+TG05 be used interchangeably?
No. They differ in package type (SOT-143 vs. SOIC-8), pin count, reset threshold configuration (fixed 2.63V vs. adjustable), and reset timeout configuration (internally fixed 1.12s minimum vs. externally adjustable). A direct drop-in substitution is not possible without redesigning the PCB and validating the supervisory behavior.
What is the reset threshold voltage of each device?
The MAX6315US26D4+T has a factory-trimmed reset threshold of 2.63V. The MAX6301CSA+TG05 has an adjustable reset threshold set by an external resistor divider, allowing the designer to select the trip point based on the monitored supply voltage.
How is the reset timeout period determined for each part?
The MAX6315US26D4+T provides a fixed minimum reset timeout of 1.12s (suffix D4). The MAX6301CSA+TG05 uses an external capacitor on the SET pin to program the reset timeout, giving the designer flexibility to choose a timeout period appropriate for the processor and system requirements.
What are the package and pin count differences?
The MAX6315US26D4+T is supplied in a 4-pin SOT-143 package. The MAX6301CSA+TG05 is supplied in an 8-pin SOIC package. These packages have different footprints, thermal characteristics, and pin assignments, so they are not footprint-compatible.
Do both devices provide manual reset input functionality?
The MAX6301CSA+TG05 includes a manual reset input (MR) that allows an external pushbutton or logic signal to assert a reset. The MAX6315US26D4+T does not provide a dedicated manual reset input; its reset output is controlled by the monitored supply voltage and the internal timeout.
What supply voltage range do these supervisory circuits support?
The MAX6315US26D4+T operates from a supply voltage range suitable for monitoring 2.5V, 3V, 3.3V, and 5V systems, with the specific reset threshold determined by the part suffix (2.63V for the US26 version). The MAX6301CSA+TG05 operates over a supply range that supports adjustable threshold monitoring, typically from 1.2V to 5.5V, with the actual monitored voltage set by the external resistor divider.
Which device is more suitable for a design requiring a custom reset threshold and timeout?
The MAX6301CSA+TG05 is more suitable when custom reset threshold and timeout are required, because both parameters are externally adjustable. The MAX6315US26D4+T is better suited for designs needing a compact, fixed-threshold, fixed-timeout supervisor with minimal external components.