STM706T/S/R STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
STMicroelectronics STM706T/S/R is a microprocessor voltage supervisor with push-pull reset output, 200 ms reset timeout, and watchdog timer in SOIC-8 package. Monitors a 5 V supply with 4.65 V threshold and supports manual reset input. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- STM706T/S/R Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Push-pull reset output drives logic directly without external pull-up resistors, providing fast voltage supervisor response within 200 ms reset pulse for clean MCU startup sequencing
- Integrated watchdog timer with 1.6 s timeout monitors MCU activity and forces a reset if firmware fails to toggle the WDI pin within the watchdog period
- Monitors 5 V power rail with 4.65 V undervoltage threshold in compact SOIC-8 package, enabling direct board-level supply supervision without discrete comparator circuitry
Applications
The STM706T/S/R is used in industrial control boards, embedded computing modules, and point-of-sale terminals where a 5 V microprocessor requires reliable reset generation during power-up, brown-out, and firmware hang events. Its integrated watchdog timer provides a secondary safety net against firmware lockups in unattended systems such as remote RTUs and building automation controllers. The SOIC-8 package and push-pull reset output allow direct interfacing to MCU reset pins with minimal external components.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What supply voltage does the STM706T/S/R monitor and at what threshold does it assert reset?
The STM706T/S/R monitors a nominal 5 V supply and asserts the RESET output low when the supply falls below approximately 4.65 V. The reset pulse remains active for a minimum 200 ms after the supply recovers above the threshold, ensuring the MCU has stable voltage before firmware begins executing.
How does the integrated watchdog timer protect against firmware lockup in unattended embedded systems?
The watchdog timer requires the host MCU to toggle the WDI input pin within a 1.6 s timeout window. If the MCU firmware hangs or enters an infinite loop and stops toggling WDI, the STM706T/S/R asserts a 200 ms reset pulse to force a controlled restart without requiring operator intervention.
What is the output type of the reset pin and how does it differ from open-drain supervisors?
The STM706T/S/R uses a push-pull reset output that actively drives both high and low logic levels, delivering up to several milliamps to MCU reset pins without an external pull-up resistor. Open-drain supervisors require an external pull-up, which adds a component and can slow the reset rise time in high-capacitance input networks.
For a 5V industrial control board, what minimum hold time does the STM706T/S/R provide after power returns to normal?
The STM706T/S/R guarantees a 200 ms minimum reset pulse duration after VCC rises back above the 4.65 V threshold. This 200 ms window is long enough for most crystal oscillators to stabilize and for the MCU internal PLL to lock before the processor begins executing instructions from reset vector.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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