QTK325-32.768KDA-T

Overview

The QTK325-32.768KDA-T is a CMOS standard clock oscillator manufactured by QST, operating at a nominal frequency of 32.768 kHz. It functions within a supply voltage range of 1.8V and features an enable/disable control function. The component exhibits a frequency stability of ±25ppm and operates across a temperature range of -10°C to 70°C. It utilizes a surface-mount package with dimensions of 3.20mm x 2.50mm x 1.10mm maximum height, designed for low-power applications requiring precise timing signals.

Feature Summary

• CMOS output interface compatible with standard digital logic levels
• Integrated enable/disable functionality for power management optimization
• Compact surface-mount design suitable for space-constrained PCB layouts

Applications

• Real-time clock circuits in portable electronic devices
• Microcontroller system clock sources
• Low-power embedded monitoring systems

Procurement Notes

Verify the manufacturer designation carefully, as this specific part number is associated with QST but appears in catalogs listing TXC Corporation as a manufacturer or distributor source. Confirm the exact pinout and electrical specifications against the official QST datasheet prior to integration. Ensure the enable/disable pin configuration matches the target circuit design requirements.

Selection Notes

Select this component when a 32.768 kHz reference is required for timekeeping or low-speed synchronization in battery-operated devices. The 1.8V supply requirement makes it suitable for modern low-voltage logic families. Consider the ±25ppm stability tolerance against application accuracy needs and verify the -10°C to 70°C operating range covers the intended environmental conditions.

Part Context

This oscillator belongs to the QTK325 series, which provides small-footprint timing solutions. The 32.768 kHz frequency is standard for real-time clock applications due to its divisibility into one-second intervals. The CMOS output type ensures direct interfacing with microcontrollers without additional buffering components.

Replacement Considerations

The TC32M5I32K7680 from CTS-Frequency Controls is listed as a direct substitute. Verify that the replacement maintains identical voltage, frequency, and package dimensions before implementation.