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Product Detailed Parameters
- Description：124.75 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：124.75 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 18QHTF21-124.750-PD is a 124.75 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. The device features a Standby (Power Down) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm and a maximum height of 2.00mm.
Feature Summary
- LVCMOS output interface
- Standby power down capability
- Compact surface mount package
Applications
- General clock generation
- Digital signal processing systems
- Communication equipment
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 124.75 MHz reference is required in space-constrained designs. The low profile and small footprint make it suitable for portable electronics. Verify that the LVCMOS output swing is compatible with the receiving logic inputs. Consider the standby feature if power efficiency is a critical design parameter for the application.
Part Context
This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies within a standardized 2.0x1.6mm package. The -PD suffix typically denotes a specific packaging or tape-and-reel configuration, distinct from bulk or other reel options found in the same family.
Replacement Considerations
Direct substitutes must match the 124.75 MHz frequency, 1.8V operation, LVCMOS output, and 4-SMD 2.0x1.6mm footprint. Cross-reference with other manufacturers offering identical pin-compatible solutions. Verify that any alternative part meets the same electrical performance standards and thermal characteristics.
