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Product Detailed Parameters
- Description：1.22 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：1.22 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)：21mA
- 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 18QHTF21-1.220-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fundamental frequency of 1.22 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features an enable/disable function for power management. It is housed in a compact 4-SMD, No Lead package. The component supports an operating temperature range from -40°C to 85°C and maintains a frequency stability of ±50ppm.
Feature Summary
- LVCMOS output interface
- Enable/Disable control function
- Compact 4-SMD no lead package
Applications
- General timing clock generation
- Embedded system synchronization
- Consumer electronics timing circuits
Procurement Notes
Verify the specific suffix 'OE' against the manufacturer's current datasheet to confirm availability and exact electrical tolerances. Ensure the 1.8V supply requirement aligns with the target circuit design. Confirm the 4-SMD package dimensions match the PCB footprint constraints before finalizing procurement orders.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside standard LVCMOS compatibility. The enable/disable feature makes it suitable for power-sensitive applications. Consider the ±50ppm stability specification against the system's jitter requirements. The wide industrial temperature range ensures reliability in varied environmental conditions.
Part Context
Mercury Electronic Ind. Co., Ltd. is a Taiwan-based manufacturer specializing in frequency-control products, including quartz crystals, oscillators, and filters. The company has over 50 years of experience in the industry. This part belongs to their standard XO series, designed for general-purpose timing applications requiring small form factors.
Replacement Considerations
Check for direct substitutes such as the 18QHTF21-1.220-PD variant, which shares similar frequency and package characteristics. Verify pinout compatibility and electrical specifications before substitution. Consult official distributor databases for cross-reference lists provided by Mercury Electronics.
