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SN74HCS86: Iq is increased when doing low temperature test

Part Number: SN74HCS86
Other Parts Discussed in Thread: TCA6424, SN74HCS74,

Hi team,

My customer is testing SN74HCS86PWR. Customer selects this device because it has very low Iq. Customer found in room-temperature and high-temperature test, the Iq is normal. But in low-temperature test(-10℃), the Iq increased a lot. So I just want to check with you is this a normal phenomenon? What may cause the Iq increase in low temperature test? Thanks.

Best regards,