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Product Detailed Parameters
- Description：57.473667 M XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：57.473667 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)：24mA
- 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 18QHTF21-57.473667-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 57.473667 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down capability for energy management. 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 standby mode functionality
- Provides LVCMOS signal output
Applications
- General clock timing applications
- Digital circuit synchronization
- Embedded system clock sources
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.
Selection Notes
Select this component when a precise 57.473667 MHz clock source is required for low-power digital systems. The choice is driven by the need for LVCMOS compatibility and a small form factor. Consider the standby feature if power conservation is critical. Validate that the operating temperature range meets the environmental conditions of the intended application site.
Part Context
This part belongs to the Mercury Electronics XO series, designed for frequency control in electronic circuits. Mercury has produced such components since 1973, specializing in quartz-based timing solutions. This specific model represents a standard oscillator variant within their portfolio, distinct from TCXOs or VCTCXOs due to its fixed frequency nature.
Replacement Considerations
Direct substitutes must match the 57.473667 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics with alternative manufacturers to ensure seamless integration without circuit modification.
