STMicroelectronics STM6717TGGWY6F

Overview

STM6717TGGWY6F from STMicroelectronics is a dual ultra-low-voltage supervisor IC with push-button reset and open-drain active-low RST output, monitoring VCC1 (factory-trimmed 1.58–4.63 V threshold) and VCC2 (0.79–3.08 V), operating down to 0.8 V supply, with 11 µA typical quiescent current at 3.6 V, and 13.2/210/900 ms selectable power-up reset delay - used in set-top boxes, portable battery-powered systems, and networking equipment.

For engineers reviewing the STM6717TGGWY6F datasheet, STM6717TGGWY6F pinout, STM6717TGGWY6F application, or STM6717TGGWY6F equivalent, key selection criteria include dual-supply monitoring capability, guaranteed RST state below 0.8 V VCC, open-drain RST compatibility with bi-directional processor reset pins, and SOT23-5 footprint constraints for space-constrained embedded designs.

Technical Context

The device implements independent voltage comparators for VCC1 and VCC2, each with factory-programmed thresholds, plus an MR input with internal 50 kΩ pull-up. Reset assertion occurs when any monitored supply falls below its threshold or MR is pulled low, and RST remains low for trec after all supplies recover and MR returns high.

RST is open-drain with external pull-up required (10 kΩ typical); the IC guarantees correct RST logic state when VCC1 ≥ 0.8 V or VCC2 ≥ 0.8 V. No MRC or RSTIN pins are present - confirming it is the base STM6717 variant per Table 1 and Figure 5.

Key Specifications

Pinout & Package

SOT23-5 (WY) package: 5-pin compact surface-mount outline with 0.95 mm pitch, optimized for high-density PCB layouts in consumer and portable electronics.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-supply supervisor applications.

Compared with TPS3808G18DBVR and MAX6816EUT+T, STM6717TGGWY6F uniquely delivers factory-programmable dual-rail monitoring in SOT23-5, eliminating external components and enabling true multi-rail system-level reset integrity without design compromise.

Availability

STM6717TGGWY6F is available at Aetrix Electronics and suitable for set-top boxes, portable medical monitors, and industrial Ethernet switches requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM6717TGGWY6F 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, designing and manufacturing analog, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.

This device belongs to the STM67xx ultra-low-voltage supervisor family, engineered specifically for reliable power-on and brown-out reset in space-constrained, battery-sensitive applications such as STBs, portable electronics, and networking infrastructure.

FAQ

What is the function of the MR pin on STM6717TGGWY6F?

The MR (Manual Reset) pin is an active-low input with an internal 50 kΩ pull-up resistor to VCC1. When pulled to VSS (e.g., via momentary switch), it forces the RST output low immediately. RST remains low for the full trec delay after MR returns high. No external debounce components are required, and the pin tolerates TTL/CMOS logic levels or open-drain drivers.

Does STM6717TGGWY6F support monitoring of a third supply voltage?

No. STM6717TGGWY6F monitors only two supplies: VCC1 and VCC2. The RSTIN pin (for adjustable third-supply monitoring) and MRC pin (for delayed manual reset) are absent - confirmed by its SOT23-5 package and device summary in Table 1. Only variants like STM6719/20/79/80 include RSTIN; only STM6777–6780 include MRC.

What pull-up resistor value is recommended for the open-drain RST output?

A 10 kΩ resistor from RST to VCC1 is sufficient for most applications. This value ensures fast rise time while limiting current draw during RST assertion. Higher values (e.g., 100 kΩ) may be used where minimal leakage is critical, but rise time increases proportionally; lower values increase static current without benefit unless driving heavy capacitive loads (>100 pF).

Can STM6717TGGWY6F operate with VCC1 below 1.5 V?

No. The absolute maximum rating specifies VCC1 ≥ 0.8 V for guaranteed RST state, but the lowest factory-programmed VCC1 threshold is 1.58 V (per datasheet Section 1). Operation below 1.58 V violates the specified reset functionality - the device may assert spurious resets or fail to detect undervoltage. For sub-1.5 V rails, use STM6717 variants with lower thresholds or alternate supervisors like TPS3801.