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Product Detailed Parameters
- Description：103.125 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：103.125 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 18QHTF21-103.125-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a fixed frequency of 103.125 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features a standby (power down) control mode for energy management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm. This component is designed for precise timing applications requiring low power consumption and small form factor integration.
Feature Summary
- Supports standby mode via power down control signal
- Utilizes LVCMOS output logic interface
- Operates on a single 1.8V supply voltage
- Housed in a compact 4-SMD no lead ceramic package
Applications
- High-speed data communication interfaces
- Network synchronization equipment
- Digital signal processing systems
- Consumer electronics requiring precise clocking
Procurement Notes
Verify the specific suffix 'PD' confirms the presence of the power down function and LVCMOS output type. Ensure the 1.8V supply requirement aligns with your system design. Confirm the 4-SMD no lead package footprint matches your PCB layout constraints before finalizing procurement orders.
Selection Notes
Select this model when a 103.125 MHz clock source is required with low voltage operation. Consider the 1.8V supply constraint and LVCMOS compatibility with downstream logic. Evaluate the need for standby functionality to manage power states. Verify that the 2.0x1.6mm package size fits within the available board space.
Part Context
This part belongs to the QHTF series from Mercury Electronic Ind. Co., Ltd, a supplier specializing in quartz crystals and oscillators. The series offers various frequencies up to 200 MHz and multiple supply voltages. The 18QHTF21 variant specifically denotes the 1.8V version within this hermetic ceramic leadless SMD family.
Replacement Considerations
Compatible substitutes include other 103.125 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Check pinout compatibility and electrical specifications such as jitter and phase noise. Models like 18QHTF21-103.125-OE offer similar core specifications but may differ in enable pin configuration.
