SN7400: chip identification from marking

KaiKai WANG

Part Number: SN7400

Tool/software:

hello Ti experts,

i want to identify one chip from the marking, the target information is SN007Q. According to this marking i cannot find any useful information whatever in the internet or Ti website. could you pls help to solve this?

over 1 year ago

0 Clemens Ladisch over 1 year ago

Guru 325360 points

This is likely to be a customer-specific marking, for which no public information is available.

0 KaiKai WANG over 1 year ago in reply to Clemens Ladisch

Prodigy 25 points

hello i want to substitute this device with a normal one, could you pls give me some suggestion or could you pls give me a compatible component?

+1 Albert Xu1 over 1 year ago in reply to KaiKai WANG

TI__Mastermind 45845 points

Hi Kaikai,

Clemens is correct there is no information for this marking. It may be very old, or a custom part for a customer.

We do not have any newer bipolar devices,

For TTL compatible, this device should be a good replacement: https://www.ti.com/product/SN74AHCT00

Otherwise for standard CMOS: https://www.ti.com/product/SN74HCS00

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SN7400: chip identification from marking