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Product Detailed Parameters
- Description：49.3967 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：49.3967 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 18QHTF21-49.3967-PD is a standard frequency crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.3967 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and supports a standby power-down mode for energy efficiency. It is housed in a compact 4-SMD, no-lead surface mount package designed for automated assembly processes.
Feature Summary
- Supports low-power operation with a dedicated standby power-down function
- Provides stable LVCMOS signal output for digital circuit interfacing
- Utilizes a leadless surface-mount package for space-constrained designs
Applications
- Low-power portable electronic devices requiring precise timing
- Digital communication systems utilizing LVCMOS interfaces
- Embedded systems needing compact clock sources
Procurement Notes
Verify the specific operating temperature range and frequency stability parameters directly from the official datasheet before procurement. Confirm that the 1.8V supply requirement aligns with your system's power architecture. Ensure the 4-SMD no-lead footprint matches your PCB layout constraints to avoid assembly issues.
Selection Notes
Select this component when a low-voltage 1.8V supply is available and a small form factor is required. The LVCMOS output is suitable for general-purpose digital logic. Consider the standby feature if power management during idle states is critical for the application design.
Part Context
This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies and voltages, typically featuring LVCMOS outputs and surface-mount packages. This specific model provides a 49.3967 MHz clock signal optimized for low-power applications.
Replacement Considerations
Cross-reference with other 18QHTF21 variants or similar 4-SMD LVCMOS oscillators from Mercury Electronics. Verify pin compatibility and electrical specifications such as supply voltage and output swing before substituting.
