CD74HC123: ESD data consult

Lin_Charles

Part Number: CD74HC123
Other Parts Discussed in Thread: SN74AHC123A

Hi team,

My customer needs HBM and CDM ESD value of this device to form their database. Please help share this data to the customer. Thanks.

over 4 years ago

0 Emrys Maier over 4 years ago

TI__Guru* 96661 points

Hello,

The CD74HC123 is rated for HBM 500V, CDM 250V.

0 ShreyasRao over 4 years ago

TI__Guru 56760 points

Hi Lin,

I would recommend considering the SN74AHC123A as dual retriggerable MMV which has 2kV HBM, 1kV CDM which is similar to CD74HC123 but better.

0 Lin_Charles over 4 years ago in reply to ShreyasRao

TI__Expert 4260 points

Hi Shreyas,

Are these two devices p2p with NXP 74HC123? Which device is the best one to replace NXP 74HC123? Thanks.

0 ShreyasRao over 4 years ago in reply to Lin_Charles

TI__Guru 56760 points

HI Lin,

It depends on the package.

SN74AHC123A is P2P with NXP if TSSOP/ SOIC packages are being used. We dont have the DQFN package available.

The AHC device meets the NXP's ESD levels but not CD74HC123.

0 Lin_Charles over 4 years ago in reply to ShreyasRao

TI__Expert 4260 points

Hi Shreyas,

Thanks. As I discussed with the customer, they need ESD>2kV and K=0.45 when VCC=5V. Both SN74AHC123A and CD74HC123 cannot meet their requirements. I cannot find another solution in TI.cim, do you have other recommended solution?

0 Lin_Charles over 4 years ago in reply to ShreyasRao

TI__Expert 4260 points

Hi Shreyas,

Do you have some other IC solution that meet customer's requirements above? Thanks.

0 ShreyasRao over 4 years ago in reply to Lin_Charles

TI__Guru 56760 points

Hi Lin,

The desired pulse width can be achieved by the Cext/ Rext and knowing the K value.

I do not see a good replacement device with K =0.5 and with the rated ESD.

Logic

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CD74HC123: ESD data consult