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Product Detailed Parameters
- Description：11.044 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：11.044 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)：22mA
- 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 18QHTF21-11.044-PD is a 11.044 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates with a 3.3V supply voltage and utilizes LVCMOS output logic. The component features an Output Enable (OE) pin for control and supports a Standby (Power Down) mode to reduce power consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The device is RoHS compliant and designed for standard clock signal applications requiring precise frequency stability.
Feature Summary
- Supports Output Enable (OE) functionality for dynamic control
- Includes Standby (Power Down) mode for energy efficiency
- Compact 4-SMD No Lead surface mount package
- RoHS compliant construction
Applications
- General purpose clock generation
- Digital signal processing circuits
- Communication interface modules
- Embedded system timing references
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 3.3V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions. Check for any specific handling instructions regarding electrostatic discharge sensitivity during assembly.
Selection Notes
Select this component when a 11.044 MHz reference is required with low power standby capabilities. The OE pin allows for system-level power management integration. Consider the 3.3V operating voltage constraint relative to other available logic families. The small form factor makes it suitable for space-constrained designs compared to larger through-hole or standard SMD oscillators.
Part Context
This part belongs to the Mercury Electronics XO series, which offers various frequencies and voltage options. The 'PD' suffix typically indicates the Power Down feature availability. It is distinct from other variants like the 1.8V versions or those without OE control. The series provides standardized timing solutions for consumer and industrial electronics.
Replacement Considerations
Direct substitutes must match the 11.044 MHz frequency, 3.3V supply, and 2.0x1.6mm package. Verify equivalent output drive strength and phase noise specifications. Cross-reference pinouts to ensure OE and GND connections are compatible. Consult manufacturer cross-reference lists for verified alternatives.
