DS90CF384A: Falling and Rising Edge Control

Brian Wang0928

Part Number: DS90CF384A
Other Parts Discussed in Thread: DS90CR286A

Team,

Regarding to this device, it's a falling edge control for output data.

Is there rising edge control for similar function? or any one device is able to control falling/rising by dedicated pin?

0 Kate Hawkins over 2 years ago

Hello Brian,

The DS90CF384A's output can only strobe on the falling edge. There are a couple devices that have a user-selectable clock edge:

Thanks,

Kate

0 Brian Wang0928 over 2 years ago in reply to Kate Hawkins

customer found possible solution DS90CR286A on Ti.com. Customer would like to double confirm the difference between DS90CR286A and DS90CF384A!

Are both P2P device?
In the both SPEC, it looks the major difference is in Rising Edge Data Strobe and Falling Edge Data Strobe, correct? Beside this difference, other spec are identical?

0 Kate Hawkins over 2 years ago in reply to Brian Wang0928

Hi Brian,

Yes the parts are pin-to-pin compatible.
There's a few differences:
1. The CR286A requires a higher input current and therefore requires more power
2. The CR286A is 28-bit whereas the CF384A is 24-bit
3. The RxIN skew margin is lower for the CR286A than for the CF384A

Thanks,

Kate

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