QTM161-19.200MDD-T

Overview

The QTM161-19.200MDD-T is a surface-mount CMOS oscillator manufactured by QST, operating at a nominal frequency of 19.2 MHz. It functions as a standard XO (crystal oscillator) with low EMI output characteristics. The device requires a supply voltage of 1.8 V and features an enable/disable control pin for power management. It is housed in a compact 4-SMD, no-lead package measuring 1.6 x 1.2 mm. The unit supports a frequency stability of ±25 ppm across the specified temperature range.

Feature Summary

• Low electromagnetic interference CMOS output signal
• Integrated enable/disable functionality for power optimization
• Compact 4-SMD no-lead surface mount package design

Applications

• Portable electronic devices requiring low power consumption
• Embedded systems utilizing 1.8V logic interfaces
• Communication modules needing precise timing references

Procurement Notes

Verify the specific suffix 'D' indicates the ±25 ppm frequency stability grade and 1.8V supply requirement when sourcing replacements. Confirm that the 'T' suffix denotes tape and reel packaging suitable for automated assembly processes. Ensure compatibility with existing PCB footprints designed for 1.6x1.2mm SMD oscillators. Cross-reference the manufacturer's latest datasheet to confirm any updates to electrical specifications or recommended soldering profiles prior to final procurement decisions.

Selection Notes

Select this component when a 19.2 MHz clock source is required for 1.8V digital circuits. The ±25 ppm stability suits applications demanding tighter tolerance than standard ±50 ppm parts. Consider the enable pin if system-level power saving is necessary. The small form factor fits space-constrained designs. Verify that the CMOS output swing matches the input requirements of the downstream logic family.

Part Context

This part belongs to the QTM161 series of ultra-small oscillators from QST. The series offers various frequencies and stability grades within a 1.6x1.2mm footprint. The QTM161 line targets high-volume consumer electronics where size and power efficiency are critical constraints compared to larger traditional oscillator packages.

Replacement Considerations

Direct substitutes must match the 19.2 MHz frequency, 1.8V supply, and 4-SMD no-lead package. Check for identical ±25 ppm stability ratings. Compatible alternatives may include other manufacturers' 1.6x1.2mm CMOS oscillators with matching pinouts and electrical characteristics.