SN74LVC1G126: Unable to simulate the buffer with load switch

Rishabh Jain

Part Number: SN74LVC1G126
Other Parts Discussed in Thread: TPS22860,

Tool/software:

Hi,

I am simulating the SN74LVC1G126 with TPS22860 load switch. When I am simulating circuit individually in pSpice , everything is working as expected. But when I am supplying the load switch output to buffer VCC then simulator giving convergence error as shown below:

I am attaching my pspice project file.

Please help me simulating the same .

buffer_OE.zip

Thanks,

4 months ago

0 Albert Xu1 4 months ago

TI__Mastermind 38095 points

Hi,

Can you try using this SPICE model and let me know if it fixes your issue. 2112.SN74LVC1G126.cir

0 Rishabh Jain 3 months ago in reply to Albert Xu1

Prodigy 50 points

Hi Albert,

I am unable to import .cir file in the schematic. Can you please share.obj file for the same.
Thank you

0 Albert Xu1 3 months ago in reply to Rishabh Jain

TI__Mastermind 38095 points

Hi Rishabh,

What program are you using to simulate? This is our normal file format for our models on our website.
If needed please look into any online tools to convert.

0 Rishabh Jain 3 months ago in reply to Albert Xu1

Prodigy 50 points

I am using Cadence Pspice for TI, unable to import .cir

0 Albert Xu1 3 months ago in reply to Rishabh Jain

TI__Mastermind 38095 points

Hi Rishabh,

You can try to edit the file yourself then in a text editor of your choice. Delete lines 191 and 197 as highlighted in the picture below:

Logic

Logic forum

SN74LVC1G126: Unable to simulate the buffer with load switch