Overview
The MAX708RESA-TG is a cost-effective system supervisor circuit produced by onsemi. It is designed to monitor the VCC voltage in digital systems and provide a reset signal to the host processor when necessary. This device is part of the MAX707/708 family, which offers precision supply-voltage monitoring and reset functionality without requiring external components.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | VCC | 1.0 | 5.5 | V | |
| Output Voltage | Vout | -0.3 | VCC + 0.3 | V | |
| Output Current (All Outputs) | Iout | 20 | mA | ||
| Input Current (VCC and GND) | Iin | 20 | mA | ||
| Thermal Resistance Junction-to-Air (SOIC-8) | RJA | 187 | °C/W | ||
| Operating Ambient Temperature | TA | -40 | +85 | °C | |
| Storage Temperature Range | Tstg | -40 | +125 | °C | |
| Latch-Up Performance (Positive/Negative) | ILATCHUP | 300/280 | mA | ||
| Reset Threshold Voltage (Typical) | VTH | 1.6 to 4.9 V (100 mV increments) | 4.38 V, 3.08 V, 2.93 V, 2.63 V | V | |
| Reset Timeout Delay | tRP | 200 ms | ms | ||
| Quiescent Current (VCC = 3.3 V) | ICC | 12 | 22 | μA |
Key Features
- Precision supply-voltage monitor with reset threshold voltages ranging from 1.6 V to 4.9 V in 100 mV increments.
- 200 ms (typical) reset timeout delay.
- Low quiescent current of 12 μA at VCC = 3.3 V.
- Active-high and active-low reset output with push-pull configuration.
- Guaranteed reset output valid down to VCC = 1.0 V.
- Voltage monitor for power-fail or low-battery warning with a +1.25 V threshold detector for the power-fail input (PFI).
- Available in 8-pin SOIC and Micro8 packages.
- Pb-free packages available).
Applications
- Computers).
- Embedded systems).
- Battery-powered equipment).
- Critical microprocessor power supply monitoring).
Q & A
- What is the primary function of the MAX708RESA-TG?
The MAX708RESA-TG is designed to monitor the VCC voltage in digital systems and provide a reset signal to the host processor when necessary).
- What are the available reset threshold voltages for the MAX708?
The reset threshold voltages for the MAX708 range from 1.6 V to 4.9 V in 100 mV increments, with typical values of 4.38 V, 3.08 V, 2.93 V, and 2.63 V).
- What is the quiescent current of the MAX708 at VCC = 3.3 V?
The quiescent current is 12 μA at VCC = 3.3 V).
- What is the reset timeout delay of the MAX708?
The reset timeout delay is typically 200 ms).
- What types of packages are available for the MAX708?
The MAX708 is available in 8-pin SOIC and Micro8 packages).
- Is the MAX708 Pb-free?
- What is the operating ambient temperature range for the MAX708?
The operating ambient temperature range is -40°C to +85°C).
- How does the MAX708 handle power-fail or low-battery conditions?
The MAX708 includes a voltage monitor for power-fail or low-battery warning with a +1.25 V threshold detector for the power-fail input (PFI)).
- Can the MAX708 reset output be driven active-high or active-low?
- What is the thermal resistance junction-to-air for the SOIC-8 package?
The thermal resistance junction-to-air for the SOIC-8 package is 187 °C/W).
