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M54HC21

Rad-hard high speed 2V to 6V CMOS logic - STMicroelectronics

M54HC21 PDF File

Description

M54HCxxx, M54HCTxxx Datasheet Rad-hard high speed 2 to 6 V CMOS logic series Flat-14 Flat-16 DIL-14 DIL-16 Flat-24 DIL-24 The upper metallic lid is not electrically connected to any pins, nor to the IC die inside the package Product status link M54HCxxx, M54HCTxxx Features • ESCC qualified • 7 V Absolute maximum ratings • 2 V to 6 V operating voltage for CMOS M54HCxxx series • 4.
5 V to 5.
5 V operating voltage for TTL M54HCTxxx series • Hermetic packages • Rad-hard 50 krad (Si) TID • SEL immune up to 110 MeV.
cm²/mg • -55 °C to +125 °C temperature range • ESCC specification available on ESCC website for each part Description The M54HCxxx and M54HCTxxx series is composed of CMOS functions, specifically designed to meet the radiation requirements of the aerospace industry.
They include a large set of gates, flip-flops, multiplexers, counters, bus interface and several other functions.
The radiation hardness, the single event latch-up (SEL) immunity and the housing in hermetic packages of all types of both series make them ideally suited for use in the most difficult environmental conditions.
They are all qualified and tested over -55°C to +125°C ambiant temperature range.
The complete specification of each type is available from the ESCC web site: https:// escies.
org using its ESCC part number.
STMicroelectronics® and guarantees full compliance of qualified parts with these ESCC specifications.
DS6794 - Rev 5 - November 2020 For further information contact your local STMicroelectronics sales office.
www.
st.
com M54HCxxx, M54HCTxxx Input equivalent circuit diagram 1 Input equivalent circuit diagram Figure 1.
Inputand equivalent circuit diagram Note: For the 54HC4049 and the 54HC4050 input equivalent circuit, there is no diode connected to VCC.
DS6794 - Rev 5 page 2/23 M54HCxxx, M54HCTxxx Radiation data 2 Radiation data Each wafer lot is qualified at 50 krad (Si) total dose as per ESCC 22900 specification at 210 rad/hour.
The HC/HCT series is character...

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