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HA121A - (HA121x) Crystal Clock Oscillators

Download the HA121A datasheet PDF. This datasheet also covers the HA1211 variant, as both devices belong to the same (ha121x) crystal clock oscillators family and are provided as variant models within a single manufacturer datasheet.

General Description

The HA-1210 Series of quartz crystal oscillators provide enable/disable 3-state TTL compatible signals for bus connected systems.

Supplying Pin 1 of the HA-1210 units with a logic “1" enables the output on Pin 5.

In the disabled mode, Pin 5 presents a high impedance to the load.

Key Features

  • Wide frequency range.
  • 0.5MHz to 36MHz.
  • User specified tolerance available.
  • Will withstand vapor phase temperatures of 253°C for 4 minutes maximum.
  • Space-saving alternative to discrete component oscillators.
  • High shock resistance, to 3000g.
  • All metal, resistance weld, hermetically sealed package.
  • Low Jitter.
  • High Q Crystal actively tuned oscillator circuit.
  • Power supply decoupling internal.
  • No inter.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (HA1211_NELFrequency.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number HA121A
Manufacturer NEL Frequency
File Size 349.22 KB
Description (HA121x) Crystal Clock Oscillators
Datasheet download datasheet HA121A Datasheet

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Other Datasheets by NEL Frequency

Part Number Description
HA1210 (HA121x) Crystal Clock Oscillators
HA1211 (HA121x) Crystal Clock Oscillators
HA1217 (HA121x) Crystal Clock Oscillators
HA1219 (HA121x) Crystal Clock Oscillators
HA121B (HA121x) Crystal Clock Oscillators

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
CRYSTAL CLOCK OSCILLATORS TTL Compatible Enable/Disable Data Sheet 8820B Rev. L HA-1210 Series Description The HA-1210 Series of quartz crystal oscillators provide enable/disable 3-state TTL compatible signals for bus connected systems. Supplying Pin 1 of the HA-1210 units with a logic “1" enables the output on Pin 5. In the disabled mode, Pin 5 presents a high impedance to the load. All units are resistance welded in an all metal package, offering RFI shielding, and are designed to survive standard wave soldering operations without damage. Insulated standoffs to enhance board cleaning are standard. Features • Wide frequency range– 0.