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Product Detailed Parameters
- Description：49.14 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：49.14 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)：23mA
- 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 18QHTF21-49.140-PD is a standard frequency crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.14 MHz and utilizes LVCMOS output logic. The device is designed for surface-mount installation in a 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. It supports a supply voltage of 1.8V and includes a standby or power-down function to manage energy consumption during inactive periods.
Feature Summary
- Generates precise timing signals using LVCMOS output logic for digital circuit compatibility
- Incorporates a standby mode to reduce power consumption when the device is not actively transmitting clock signals
- Utilizes a compact surface-mount package design suitable for high-density printed circuit board layouts
Applications
- Digital signal processing systems requiring stable clock references
- Communication equipment utilizing LVCMOS interface standards
- Portable electronic devices where low power consumption and small form factor are critical
Procurement Notes
Verify that the specific part number matches the required 49.14 MHz frequency and LVCMOS output type. Confirm the 1.8V supply voltage requirement aligns with the target system design. Ensure the 4-SMD no-lead package footprint corresponds to the PCB layout specifications before finalizing procurement orders.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside a compact 2.0x1.6mm footprint. The LVCMOS output ensures compatibility with standard digital logic families. Consider the standby feature if power management is a priority for the application environment.
Part Context
This oscillator belongs to the Mercury Electronics family of surface-mount timing devices. It complements through-hole crystals and larger oscillators by offering a balance between size, power efficiency, and performance for modern embedded applications.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation.
