STMicroelectronics STM6710JWB6F

Overview

STM6710JWB6F from STMicroelectronics is a quad-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring 5.0 V (–5%), 3.3 V (–5%), 1.8 V (–10%), and adjustable input with 0.62 V threshold (±1.5%). It delivers 200 ms reset timeout, <35 µA quiescent current, and open-drain RESET output with 10 µA internal pull-up to V2IN. Used in server/workstation power sequencing to ensure reliable boot under multi-rail brownout conditions.

For engineers reviewing the STM6710JWB6F datasheet, STM6710JWB6F pinout, STM6710JWB6F application, or STM6710JWB6F equivalent, key selection criteria include factory-trimmed voltage thresholds for 5 V/3.3 V/1.8 V rails, guaranteed reset validity down to V1IN or V2IN = 1 V, immunity to supply transients, and compatibility with manual reset integration via external push-button.

Technical Context

The STM6710JWB6F operates as a quad-input supervisor where V2IN serves both as device power supply and monitored rail, enabling true four-rail detection. Its internal comparator architecture features 0.3% hysteresis and 60 ppm/°C threshold temperature coefficient, ensuring stable trip points across –40 °C to +85 °C.

All four inputs (V1IN–V4IN) support independent threshold configurations: three are factory-set (5.0 V, 3.3 V, 1.8 V), while one is adjustable via external resistor divider targeting 0.62 V reference. RESET asserts low when any input falls below its threshold and remains asserted for 200 ms after all voltages recover.

Key Specifications

Pinout & Package

SOT23-6 (WB) package: 6-pin surface-mount, 2.8 mm × 1.75 mm footprint, 1.3 mm height, RoHS-compliant, ECOPACK® certified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-voltage supervisor applications.

Compared with MAX6314US33D3+T and TPS3808G33DBVR, the STM6710JWB6F uniquely integrates four independent voltage monitors-including factory-set 5 V/3.3 V/1.8 V and one scalable input-within a single SOT23-6 footprint, delivering deterministic 200 ms reset hold time and guaranteed operation down to 1.2 V supply without external components.

Availability

STM6710JWB6F is available at Aetrix Electronics and suitable for server/workstations, networking equipment, and desktop computers requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.

Supply support for STM6710JWB6F 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing silicon solutions for automotive, industrial, and consumer markets since 1987.

The STM67xx series was developed specifically for high-accuracy, low-power multi-rail supervision in space-constrained computing platforms, emphasizing factory-trimmed thresholds, transient immunity, and seamless integration into complex power-sequencing architectures.

FAQ

What is the exact reset threshold for each input on STM6710JWB6F?

The STM6710JWB6F has factory-set thresholds: V1IN = 5.0 V (–5%, i.e., 4.75 V typ.), V2IN = 3.3 V (–5%, i.e., 3.15 V typ.), V3IN = 1.8 V (–10%, i.e., 1.62 V typ.), and V4IN = adjustable with 0.62 V ±1.5% internal reference. These values are confirmed in Table 5 of ST's DocID16887 Rev 5 datasheet under "Voltage thresholds".

Can STM6710JWB6F monitor a 2.5 V rail?

Yes - the V4IN pin supports adjustable threshold configuration. Using a resistor divider per Equation 1 in Section 4.2 of the datasheet, a 2.5 V rail can be scaled to match the 0.62 V internal reference (e.g., R1 = 30.6 kΩ, R2 = 10 kΩ yields VTH = 2.5 V). Input bias current is <0.2 µA, enabling high-precision scaling with standard 1% resistors.

Is an external pull-up resistor required for the RESET output?

No - the RESET output includes a 10 µA internal weak pull-up to V2IN, sufficient for most microprocessor nRST inputs. An external pull-up is only needed when interfacing to a higher-voltage domain (e.g., 5 V logic while V2IN = 3.3 V); the device includes reverse-current protection to prevent backfeeding into V2IN in such cases.

Does STM6710JWB6F support manual reset functionality?

Yes - Section 4.4 of the datasheet details manual reset implementation: connect a push-button between V4IN and GND. Pressing the button pulls the adjustable input below 0.62 V, triggering RESET. The switch must remain open for ≥140 ms to deassert RESET, and no external debounce circuitry is required due to internal timing control.