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Product Detailed Parameters
- Description：108.8 MHz XO 1.8V 2.0X1.6 MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：108.8 MHz
- Function：Standby (Power Down)
- Output：LVCMOS
- Voltage - Supply：1.8V
- Frequency Stability：±50ppm
- Absolute Pull Range (APR)：-
- Operating Temperature：-40°C ~ 85°C
- Spread Spectrum Bandwidth：-
- Current - Supply (Max)：28mA
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.079" L x 0.063" W (2.00mm x 1.60mm)
- Height - Seated (Max)：0.031" (0.80mm)
- Supplier Device Package：-
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Overview
The 18QHTF21-108.800-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 108.8 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.
Feature Summary
- Supports low-voltage operation at 1.8V
- Integrates a standby or power-down control mode
- Delivers LVCMOS output signal compatibility
Applications
- General-purpose clock generation in embedded systems
- Timing reference for digital communication interfaces
- Power-sensitive portable electronic devices
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints to guarantee proper assembly and electrical connection.
Selection Notes
Choose this component when a precise 108.8 MHz timing source is required within space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-power applications. The integrated power-down feature allows for energy management strategies in battery-operated equipment where standby current reduction is critical.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has decades of experience in Taiwan's quartz industry. This series typically offers standard oscillators in small surface-mount packages for various consumer and industrial electronics.
Replacement Considerations
Direct substitutes include other 108.8 MHz LVCMOS oscillators in 2.0x1.6mm SMD packages with 1.8V operation. Verify pinout compatibility and thermal characteristics. Cross-reference with similar Mercury models like the 18QHTF21-124.800-PD only if frequency differences are acceptable.
