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SN74HCS86: Ivcc Through-current on slow signal simulated by Pspice for TI

Midori
Prodigy 10 points
Part Number: SN74HCS86
Other Parts Discussed in Thread: SN74HC86,

Tool/software:

We wanted to investigate the SN74HCS86; we chose the SN74HC86 for comparison.

The results were less than 1mA for all ICs, but the HCS86 had twice the VCC-pin throughput current of the HC86.
Is this a correct representation of the value in the actual device?

  • 0
    Guru 295500 points

    The SN74HC86 model is older than PCN#20200629000.1, so I do not expect it to model the typical characteristics of the new die correctly. I'd expect the new HC device to have shoot-through currents similar to that of the HCS. If you want to be sure, you have to actually measure a real device.

  • 0 in reply to Clemens Ladisch
    Prodigy 10 points

    I thought the HCS family was superior to other CMOS in shoot-through current performance.
    I wanted to corroborate that with this simulation. But the results are the opposite of the promotional phrase on the datasheet. 

    HCS86 appears to perform worse... The HC86 seems better!