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Product Detailed Parameters
- Description：121.19 MHz XO 1.8V 2.0X1.6 MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：121.19 MHz
- Function：Enable/Disable
- 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 18QHTF21-121.190-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 121.190 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Features integrated enable and disable functionality for power management
- Utilizes a surface-mount 4-SMD no lead package design
Applications
- Digital signal processing systems
- Communication equipment requiring precise clocking
- Embedded systems utilizing LVCMOS interfaces
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the target platform's power rails. Ensure the 4-SMD footprint matches the PCB layout constraints. Cross-reference the manufacturer part number to avoid confusion with similar series variants.
Selection Notes
Select this component when a 121.190 MHz clock source is required with LVCMOS signaling. The 1.8V operating voltage makes it suitable for low-power applications. Consider the small 2.0x1.6 mm package size for space-constrained designs. Verify thermal performance within the specified operating temperature range for the intended environment.
Part Context
This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a standardized SMD form factor. The series supports differential and single-ended outputs across different models. This specific variant provides a fixed frequency solution for timing applications without requiring external tuning components.
Replacement Considerations
Direct substitutes must match the 121.190 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package dimensions. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical. Consult the manufacturer for updated cross-reference lists.
