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Product Detailed Parameters
- Description：11.059 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：11.059 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 18QHTF21-11.059-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 11.059 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby power-down mode for energy efficiency. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.00mm x 1.60mm.
Feature Summary
- Supports low-voltage operation at 1.8V
- Includes standby power-down functionality
- Utilizes LVCMOS output interface
Applications
- General timing clock applications
- Embedded systems requiring precise frequency reference
- Portable electronic devices due to low voltage requirements
Procurement Notes
Verify the specific frequency tolerance and operating temperature range against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB design constraints. Check for RoHS compliance status if required by project specifications.
Selection Notes
Select this component when a stable 11.059 MHz reference is needed with minimal power consumption. The small 2.0x1.6mm form factor suits space-constrained designs. Consider the LVCMOS compatibility with downstream digital logic. Evaluate thermal performance within the specified operating temperature range.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, a supplier specializing in quartz crystals and oscillators. The series offers various frequencies within a standardized surface-mount package. Mercury Electronics has produced frequency control products since 1973, focusing on Taiwan-based manufacturing.
Replacement Considerations
Direct substitutes include other 11.059 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as jitter and phase noise. Cross-reference with similar models like 18QHTF21 variants offering different frequencies but identical packaging.
