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Product Detailed Parameters
- Description：13.562 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：13.562 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 18QHTF21-13.562-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.562 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, featuring a supply voltage of 1.8V. It supports a standby or power-down mode to manage energy consumption effectively. The component is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm, suitable for space-constrained printed circuit board layouts.
Feature Summary
- Supports standby mode for power management
- LVCMOS output interface compatibility
- Compact surface-mount footprint
Applications
- Battery-powered portable devices
- Consumer electronics requiring low power
- Communication modules operating at 13.562 MHz
Procurement Notes
Verify the specific ordering suffix against the manufacturer's current datasheet to ensure correct packaging and tape-and-reel specifications. Confirm that the 1.8V supply requirement aligns with the target system design before procurement. Check for any recent updates to the RoHS compliance status or lead-free certification documentation provided by Mercury Electronics.
Selection Notes
Select this oscillator when a precise 13.562 MHz clock signal is required with minimal power consumption. The 1.8V operation makes it suitable for modern low-voltage digital circuits. Ensure the PCB layout accommodates the 2.0x1.6mm SMD package dimensions. Consider the standby feature if power efficiency during idle states is a critical design parameter.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized small outline package. The series is characterized by low noise and stable performance for timing applications. Mercury Electronics has established itself as a supplier of quartz crystals and oscillators since 1973, focusing on frequency control solutions.
Replacement Considerations
Direct substitutes include other 13.562 MHz LVCMOS oscillators in identical 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as load capacitance and drive level before substitution.
