ISM97-1251AH-20.000MHZ

Oscillators Overview

The ISM97-1251AH-20.000MHZ is a standard clock oscillator from the ISM97 series manufactured by ILSI America. It operates at a nominal frequency of 20 MHz with a CMOS output level and supports a supply voltage of 1.8 V. The component utilizes a surface-mount ceramic package measuring 2.5 mm x 3.2 mm with four pins. It features an enable/disable function controlled via Pin 1, which must be held at or above 70% of Vdd to activate the device. The oscillator is RoHS compliant and lead-free, designed for applications requiring low power consumption and compact form factors in digital systems.

Oscillators Feature Summary

• CMOS logic output levels compatible with standard digital interfaces
• Integrated enable and disable control functionality via Pin 1
• Compact 2.5 mm x 3.2 mm ceramic surface-mount packaging
• Lead-free processing compliance for environmental standards

Oscillators Applications

• General-purpose digital system clocking
• Embedded microcontroller timing references
• Portable electronic devices requiring low power operation
• Industrial control system timing modules

Oscillators Procurement Notes

Verify the specific suffix codes against the official ILSI datasheet to ensure correct voltage, tolerance, and enable pin configuration. Confirm that the ordering part number matches the required 1.8V supply and 20MHz frequency specifications. Check for any recent manufacturing updates or package revisions that may affect pinout or electrical characteristics before finalizing procurement orders.

Oscillators Selection Notes

Select this component when a small footprint and low voltage operation are critical. Ensure the design accommodates the 1.8V supply requirement and utilizes the enable pin correctly for power management. Compare load capacitance requirements with the target circuit to maintain frequency stability. Verify that the ceramic package size fits within the available PCB area constraints.

Oscillators Part Context

This oscillator belongs to the ISM97 series, which focuses on small-size, low-power solutions for portable and embedded electronics. The series typically offers various frequencies and packages, with this specific model providing a 20MHz output in a 4-pin SMD format. It serves as a timing reference for systems needing precise clock signals without the complexity of PLL-based oscillators.

Oscillators Replacement Considerations

Direct substitutes include other ISM97 series models with matching 20MHz frequency and 1.8V supply, such as ISM97-1251AH-20.000. Cross-reference with similar 2.5x3.2mm CMOS oscillators from other manufacturers only if electrical parameters and pinouts are identical.

Oscillators FAQ

How is the enable function implemented?

Pin 1 serves as the enable pin. It must be held at a voltage greater than or equal to 70% of Vdd to enable the oscillator output.

What is the physical package size?

The component uses a 2.5 mm x 3.2 mm ceramic surface-mount package with four terminals.