31 August 2023

CISSOID at The Battery Show North America in Novi, Michigan, on 12-14 Sept 2023.

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Download datasheet


555 Timer

The CHT-555 is a high-temperature, low-power, highly stable device for generating accurate time delays or oscillations, with enhanced capabilities compared to the well known NE555.

Typical performances

  • 5V Power Supply
  • Temperature range: -55°C to +225°C (operational up to 250°C)
  • Timing from microsecond to hours
  • Monostable and bistable mode



  • Well logging, automotive, aeronautics & aerospace
  • Precision timing
  • Pulse generation
  • Pulse width and pulse position modulation

If you need support for your high temperature design, contact Cissoid.

Download CISSOID's Altium Library for IC symbols and package footprints. For installation, read the related Application Note.


CHT-555: astable configuration CHT-555: monostable configuration
Astable configuration Monostable configuration


Die Map

Supporting its customers in the manufacturing of high temperature and high reliability hybrid modules, CISSOID delivers most of its CHT products as bare die. Please, do not hesitate to contact CISSOID to request die map information including die dimension, die finish, location and description of the bonding pads.


Ordering information

Product name Ordering reference Package Marking
CHT-555 CHT-555-CDIL8-T Ceramic DIL8 CHT-555
CHT-555 CHT-555-D-T Known Good Die -