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Product Detailed Parameters
- Description：6.144 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：6.144 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)：21mA
- 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 18QHTF21-6.144-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 6.144 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down mode capability. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.
Feature Summary
- Supports low-voltage operation with 1.8V supply requirement
- Includes standby functionality for power management
- Utilizes LVCMOS output interface for digital compatibility
Applications
- General-purpose digital timing circuits
- Embedded systems requiring stable clock sources
- Communication equipment signal processing
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable and within the specified operating range to ensure reliable oscillator performance. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet to prevent assembly issues.
Selection Notes
Select this component when a 6.144 MHz clock signal is required with low power consumption constraints. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the 1.8V operating voltage as a primary constraint for power supply design. The standby feature offers an advantage for battery-operated devices where power efficiency is critical during idle periods.
Part Context
This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronic Ind. Co., Ltd. The series typically offers various frequency options within a standardized small form factor. Mercury Electronics is a specialized manufacturer of frequency control products, including quartz crystals and oscillators, with a long history in the industry.
Replacement Considerations
Direct replacements must match the 6.144 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if available in competitor datasheets.
