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Product Detailed Parameters
- Description：12.7 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：12.7 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)：22mA
- 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 18QHTF21-12.700-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.7 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no lead package, designed for surface-mount applications.
Feature Summary
- Integrates LVCMOS output logic for digital interface compatibility
- Features a dedicated standby mode to reduce power consumption
- Utilizes a leadless SMD package for automated assembly
Applications
- Digital signal processing clock sources
- Communication equipment timing references
- Embedded system microcontroller clocks
Procurement Notes
Verify the specific datasheet from Mercury Electronics Ind. Co. Ltd for precise electrical characteristics and mechanical drawings. Confirm that the 1.8V supply requirement aligns with the target circuit design. Ensure the 4-SMD no-lead footprint matches the PCB layout specifications before finalizing procurement orders.
Selection Notes
Select this component when a 12.7 MHz reference is required with low-voltage operation. The LVCMOS output ensures direct interfacing with standard digital logic families. Consider the standby feature if power efficiency is a critical design constraint for the application environment.
Part Context
This model belongs to the Mercury Electronic XO series, which provides standard frequency control solutions. The '18' prefix typically indicates the 1.8V operating voltage range, while 'PD' denotes the power-down capability. The product line focuses on reliable crystal oscillators for consumer and industrial electronics.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and voltage compatibility carefully when considering alternative manufacturers. Cross-reference the 12.7 MHz frequency and LVCMOS output requirements with potential replacements.
