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Product Detailed Parameters
- Description：121.192 MHz XO 1.8V 2.0X1.6MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：121.192 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 18QHTF21-121.192-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 121.192 MHz and utilizes LVCMOS output logic. The device is designed for low voltage applications, functioning with a supply voltage of 1.8V. It features an enable/disable control pin for power management flexibility. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for space-constrained surface-mount designs.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes enable/disable functionality for power optimization
- Compact 4-SMD no-lead surface mount package design
Applications
- Digital signal processing systems
- Communication equipment clocking
- Embedded system timing references
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator specifications. Confirm that the PCB footprint matches the 2.0x1.6 mm SMD package dimensions to avoid assembly issues during manufacturing.
Selection Notes
Select this component when a precise 121.192 MHz reference is required in low-voltage environments. The LVCMOS output ensures direct interfacing with standard digital logic without additional level shifting. Consider the enable pin utility if dynamic power saving is a critical design constraint for the target application.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The manufacturer has decades of experience in Taiwan producing crystals and oscillators. This series typically offers standard performance levels suitable for general-purpose timing applications in consumer and industrial electronics.
Replacement Considerations
Direct substitutes include other 121.192 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as phase noise and jitter before substitution.
