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Product Detailed Parameters
- Description：124.565 MHz XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：124.565 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)：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 18QHTF21-124.565-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 124.565 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a Standby (Power Down) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes Standby mode to reduce power consumption during idle periods
- Utilizes a leadless surface-mount package for automated assembly
Applications
- High-speed data communication systems requiring precise clock signals
- Network infrastructure equipment utilizing standard frequency references
- Embedded digital circuits needing low-voltage clock sources
Procurement Notes
Verify the specific frequency tolerance and operating temperature range against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD no-lead footprint matches the PCB layout requirements. Cross-reference the part number suffix to confirm the exact packaging configuration.
Selection Notes
Select this component when a 124.565 MHz reference is required with LVCMOS compatibility. Consider the 1.8V supply constraint and the need for standby functionality. Evaluate the 2.0x1.6mm footprint against available board space. Compare performance metrics such as jitter and stability if specified in the manufacturer documentation.
Part Context
This model belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies within a small form factor. The 'PD' suffix indicates specific packaging or tape-and-reel configuration details provided by the manufacturer.
Replacement Considerations
No public substitute part numbers are confirmed in the available documentation. Verify compatibility with alternative vendors based on electrical specifications and mechanical footprint if sourcing changes.
