QTK216-32.768KDE-T

Overview

The QTK216-32.768KDE-T is a standard CMOS crystal oscillator manufactured by QST, designed for precise timekeeping and clock signal generation in low-power electronic systems. It operates at a nominal frequency of 32.768 kHz with a frequency stability of ±50 ppm. The device supports a supply voltage of 1.8V and features an enable/disable control function to manage power consumption effectively. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm, suitable for space-constrained applications. The operational temperature range spans from -40°C to +85°C, ensuring reliable performance across various environmental conditions.

Feature Summary

• Integrated enable/disable functionality for efficient power management
• CMOS output interface compatible with standard digital logic
• Compact surface-mount package optimized for PCB space efficiency

Applications

• Real-time clock circuits in portable electronics
• Microcontroller system clock sources
• Low-power embedded devices requiring precise timing

Procurement Notes

Verify the specific ordering suffix matches the required frequency tolerance and operating temperature range. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint corresponds to the design layout. Check for any specific reflow soldering profile requirements provided in the official datasheet to maintain component integrity during assembly.

Selection Notes

Select this component when a low-profile, low-voltage oscillator with enable control is required. Consider the ±50 ppm stability specification against the system's timing accuracy needs. Evaluate the 1.8V supply requirement against available power domains. Compare the physical dimensions with other available packages if board space is limited. Ensure the operating temperature range meets the application's environmental specifications.

Part Context

This model belongs to QST's series of quartz crystal oscillators, specifically designed for consumer and industrial applications requiring accurate timekeeping. The QTK series typically offers various voltage options and stability grades. This particular variant focuses on low-voltage operation and compact form factors, catering to modern miniaturized electronic designs where power efficiency and size are critical constraints.

Replacement Considerations

Direct substitutes may include other 32.768 kHz CMOS oscillators in 4-SMD packages with similar voltage and stability ratings. Verify pinout compatibility and electrical characteristics before substitution. Cross-reference with QST's own product line for updated or alternative models within the same family.