TSM21-H50HQ18ST-40.000M

Oscillators Overview

The TSM21-H50HQ18ST-40.000M is an ultra-miniature surface-mount HCMOS crystal oscillator manufactured by Transko Electronics, Inc. It operates at a nominal frequency of 40 MHz with a frequency stability of ±50 ppm. The device utilizes a 1.8V supply voltage and features an enable/disable function for power management. Typical supply current is 2 mA. The component is housed in a compact 4-SMD, no-lead package measuring 2.0 x 1.6 x 0.9 mm, designed for low-voltage applications.

Oscillators Feature Summary

• Ultra-miniature SMD form factor suitable for space-constrained designs
• HCMOS output signal compatibility
• Integrated enable/disable control functionality
• Low voltage operation at 1.8V

Oscillators Applications

• IoT devices requiring low power consumption
• Portable electronic equipment
• Embedded systems with limited board space
• Consumer electronics utilizing HCMOS logic

Oscillators Procurement Notes

Verify the specific suffix codes against official Transko documentation to confirm electrical characteristics and pinout configuration. Ensure that the 1.8V supply requirement aligns with target system power rails. Confirm package dimensions match PCB footprint specifications prior to procurement to avoid assembly issues.

Oscillators Selection Notes

Select this component when a small footprint and low voltage operation are critical. The HCMOS output is suitable for digital logic interfaces. Consider the ±50 ppm stability requirement against system timing needs. The enable feature allows for dynamic power management in battery-operated applications.

Oscillators Part Context

This part belongs to the TSM21 series of ultra-miniature oscillators from Transko Electronics. The series is characterized by its small 2.0 x 1.6 mm package size. The model specifies a 40 MHz frequency and 1.8V supply, distinguishing it from other variants in the family with different frequencies or voltages.

Oscillators Replacement Considerations

Direct substitutes must match the 40 MHz frequency, 1.8V supply, HCMOS output, and 4-SMD package dimensions. Verify pinout compatibility and electrical parameters before substitution.