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Product Detailed Parameters
- Description：12.583 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：12.583 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 18QHTF21-12.583-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.583 MHz with an LVCMOS output logic level. The component requires a 1.8V supply voltage and features a Standby (Power Down) control function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This surface-mount device is designed for applications requiring precise clock signals in space-constrained environments.
Feature Summary
- Supports Low Voltage CMOS (LVCMOS) output interface
- Includes Standby (Power Down) functionality
- Compact 4-SMD No Lead package design
Applications
- Battery-powered portable devices
- General electronic systems requiring clock synchronization
- Embedded circuits utilizing low-voltage logic
Procurement Notes
Verify the specific frequency tolerance and operating temperature range against the official datasheet before integration. Confirm that the 1.8V supply requirement aligns with the target system's power architecture. Ensure the 4-SMD No Lead package footprint matches the PCB layout constraints. Cross-reference the manufacturer part number to avoid confusion with similar series variants.
Selection Notes
Select this model when a 12.583 MHz clock signal is required within a 2.0x1.6mm footprint. The 1.8V supply specification makes it suitable for modern low-power digital designs. Consider the LVCMOS output compatibility with downstream logic gates. The standby feature offers advantages in power-sensitive applications where active management of clock sources is necessary.
Part Context
This component belongs to the 18QHTF21 series of quartz crystal oscillators from Mercury Electronics. The series typically includes various frequencies and voltage options, such as 1.8V and 3.3V variants. These oscillators are designed to provide stable frequency generation for digital circuits, serving as timing references for microcontrollers and communication interfaces.
Replacement Considerations
Direct substitutes include other 12.583 MHz LVCMOS oscillators in 2.0x1.6mm packages with 1.8V operation. Verify pinout compatibility and electrical specifications before swapping. Alternative models from different manufacturers may require schematic adjustments due to differing current consumption or startup times.
