PCA9698BS Alternate Part

[ryan_smith]

Can PCA9506BS,118 be used as an alternate for PCA9698BS,118?

This looks to be an acceptable replacement.

The only difference I'm unsure about with my current design is the device address map. The PCA9506BS seems to use different target addresses than the PCA9698BS. The PCA9698BS requires AD2, AD1, and AD0 to be pulled to Vss or SCL/SDA. Can PCA9506BS A2, A1, and A0 be tied to the hardware at the same configuration as PCA9506BS and still work correctly? I don't see an address map table in the datasheet for PCA9506BS. What device addresses are available for the PCA9506BS?

Thanks,

Ryan

[ErikaC]

I am afraid no, we do not have an alternative with the same functionality and the same package. We apologize for any inconvenience this may cause you.

[ryan_smith]

Thank you for the reply and the information. Yes, I'm aware of those differences. But both parts do look to have the same package/footprint. So assuming the differences are acceptable and I utilize 1 of the 8 addresses on the PCA9506, for the PCA9698, then the PCA9506 could be considered a replacement. Unfortunately, I chose an address on the PCA9698 using SCL as address decoding (that is not available on the PCA9506).

Are there any other devices available, that would be considered a package and functional alternate for the PCA9698?

[ErikaC]

Can PCA9506BS,118 be used as an alternate for PCA9698BS,118? This looks to be an acceptable replacement. The only difference I'm unsure about with my current design is the device address map. The PCA9506BS seems to use different target addresses than the PCA9698BS.

Yes, you can use PCA9506BS as an alternative to PCA9698BS only if you have 8 or less devices on the same bus. But you have to consider the differences:
PCA9506BS,118
• Max Sink Current per bit: 15
• Total package load of 600 mA
• 3 programmable address pins allowing 8 devices on the same bus

PCA9698BS,118
• Max Sink Current per bit 25
• Total package load of 1 A
• Includes GPIO device in a new Fast-mode Plus (Fm+).
• 64 programmable target addresses using 3 address pins

The PCA9698BS requires AD2, AD1, and AD0 to be pulled to Vss or SCL/SDA. Can PCA9506BS A2, A1, and A0 be tied to the hardware at the same configuration as PCA9506BS and still work correctly? I don't see an address map table in the datasheet for PCA9506BS. What device addresses are available for the PCA9506BS?

No, as I mentioned before, PCA9506BS only includes 8 target addresses. Only using a binary logic =Vdd / =GND would limit the possibility to only 8 PCA9698 on the same I2C Bus.
Using SCL & SDA also as Address decoding allows to an increase the number of PCA9698 up to 64 per I2C bus.
But this is not guaranteed for PCA9506BS because A6, A5, and A4 are fixed while PCA9698 are programmable.

I have to say if you are looking for an alternative, the supply situation in the industry is currently mainly about manufacturing capacity in general. If we have a similar part that is usable as an alternative, it will not change the situation, because it will then run in the same factory (or foundry) and be limited through the same constraints.