When ordering parts from the ADV7439X series of encoders they will sometimes have a -3 after the part number (please note the picture is from another series but the concept applies to this series).
Analog devices explains what that means:
The latest revision of the encoder has the -3 version branded on it’s package. The revision code of the encoder can be read back from register 0xBB bits 7:6. 01B indicates the latest revision.
Further information on the change made to this version is described in the section HD interlace External HS and VS considerations of the datasheets.
This applies to the following series of parts:
ADV7390
ADV7391
ADV7392
ADV7393
For your convenience here is the HD interlace External HS and VS considerations from the datasheet.
HD INTERLACE EXTERNAL HSYNC AND VSYNC
CONSIDERATIONS
If the encoder revision code (Subaddress 0xBB, Bits[7:6]) = 01
or higher, the user should set Subaddress 0x02, Bit 1 to high.
To ensure correct timing in HD interlace modes when using
HSYNC and VSYNC synchronization signals. If this bit is set to
low, the first active pixel on each line is masked in HD interlace
modes and the Pr and Pb outputs are swapped when using the
YCrCb 4:2:2 input format. Setting Subaddress 0x02, Bit 1 to low
causes the encoder to behave in the same way as the first
version of silicon (that is, this setting is backward compatible).
If the encoder revision code (Subaddress 0xBB, Bits[7:6]) = 00,
the setting of Subaddress 0x02, Bit 1 has no effect. In this
version of the encoder, the first active pixel is masked and the
Pr and Pb outputs are swapped when using YCrCb 4:2:2 input
format. To avoid these limitations, use the newer revision of
silicon or use a different type of synchronization.
These considerations apply only to the HD interlace modes
with external HSYNC and VSYNC synchronization (EAV/SAV
mode is not affected and always has correct timing).
There is no negative effect in setting Subaddress 0x02, Bit 0 to
high, and this bit can remain high for all the other video
standards.
Applicable Part Numbers
| DigiKey Part Number | Manufacturer Part Number |
|---|---|
| ADV7391BCPZ-REELTR-ND,ADV7391BCPZ-REELCT-ND,ADV7391BCPZ-REELDKR-ND | ADV7391BCPZ-REEL |
| 505-ADV7391BCPZ-ND | ADV7391BCPZ |
| 505-ADV7393BCPZ-REELTR-ND,505-ADV7393BCPZ-REELCT-ND,505-ADV7393BCPZ-REELDKR-ND | ADV7393BCPZ-REEL |
| ADV7393WBCPZ-REELTR-ND,ADV7393WBCPZ-REELCT-ND,ADV7393WBCPZ-REELDKR-ND | ADV7393WBCPZ-REEL |
| 505-ADV7391WBCPZ-ND | ADV7391WBCPZ |
| 505-ADV7391WBCPZ-RLTR-ND,505-ADV7391WBCPZ-RLCT-ND,505-ADV7391WBCPZ-RLDKR-ND | ADV7391WBCPZ-RL |
| 505-ADV7393WBCPZ-ND | ADV7393WBCPZ |
| 505-ADV7393BCPZ-ND | ADV7393BCPZ |
| 505-ADV7390WBCPZ-RLTR-ND,505-ADV7390WBCPZ-RLCT-ND,505-ADV7390WBCPZ-RLDKR-ND | ADV7390WBCPZ-RL |
| ADV7390BCBZ-A-RL-ND | ADV7390BCBZ-A-RL |
| ADV7390BCPZ-REEL-ND | ADV7390BCPZ-REEL |
| ADV7392BCPZ-3REEL-ND | ADV7392BCPZ-3REEL |
| ADV7392BCPZ-REEL-ND | ADV7392BCPZ-REEL |
| ADV7390BCPZ-ND | ADV7390BCPZ |
| ADV7392WBCPZ-REEL-ND | ADV7392WBCPZ-REEL |
| ADV7392WBCPZ-ND | ADV7392WBCPZ |