TSM21-H50CQ18ST-6.144M

Oscillators Overview

The TSM21-H50CQ18ST-6.144M is a standard HCMOS crystal oscillator manufactured by Transko Electronics, Inc., operating at a fixed frequency of 6.144 MHz. It utilizes a 1.8V supply voltage and features an enable/disable control function for power management. The device is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 x 0.9 mm. It offers a frequency stability of ±50 ppm and operates within a temperature range of -40°C to +85°C.

Oscillators Feature Summary

• Ultra-miniature surface-mount design suitable for space-constrained applications
• Integrated enable/disable functionality for efficient power control
• HCMOS output signal compatibility with digital logic circuits

Oscillators Applications

• Portable wireless devices requiring low power consumption
• Mobile test equipment needing stable clock references
• Beacons and rescue systems utilizing compact timing solutions

Oscillators Procurement Notes

Verify the specific suffix codes against official Transko documentation to ensure correct voltage, frequency, and tolerance specifications. Confirm RoHS compliance status and lead-free requirements prior to ordering. Cross-reference the part number with the latest datasheet revisions to validate pinout configurations and electrical characteristics. Ensure environmental ratings match the intended operational temperature range.

Oscillators Selection Notes

Select this component when a small form factor and low voltage operation are critical. The 1.8V supply requirement limits suitability for higher voltage logic families without level shifting. Consider the ±50 ppm stability for general timing needs rather than high-precision synchronization. Evaluate the enable feature if dynamic power saving is required during idle periods.

Oscillators Part Context

This model belongs to the TSM21 series of ultra-miniature SMD HCMOS oscillators from Transko Electronics. The series incorporates MEMS technology and covers frequencies from 1 MHz to 137 MHz. It serves as a drop-in replacement for discontinued Epson Toyocom models such as the VG-1201CA (TSMV series) and SG-636 (TSP series), offering fit, form, and functional equivalence.

Oscillators Replacement Considerations

Transko recommends the TSMV series as a direct drop-in replacement for the discontinued Epson Toyocom VG-1201CA. The TSP series is also cited as a compatible alternative for the SG-636 model. Verify mechanical footprint and electrical parameters before substituting.