The ISL34340 is a serializer/deserializer of LVCMOS parallel video data. The video data presented to the serializer on the parallel LVCMOS bus is serialized into a high-speed differential signal. This differential signal is converted back to parallel video at the remote end by the deserializer. It also transports auxiliary data bidirectionally over the same link during the video vertical retrace interval.
The ISL34340 is a serializer/deserializer that transports 24‑bit parallel video data over a single high‑speed differential pair while also carrying auxiliary data bidirectionally during the vertical blanking interval. It supports video formats such as SVGA 800×600 @70 fps and WSVGA 1024×600 @60 fps.
The device is supplied in a 64‑lead thin‑plastic quad flat‑pack (EPTQFP) and requires careful PCB layout, power‑supply sequencing, and proper termination to achieve reliable high‑speed operation. The datasheet provides full electrical specifications, pin descriptions, and recommended design practices.
| Video transport | 24‑bit RGB over single differential pair |
|---|---|
| Operating temperature range | -40 °C to +85 °C |
| Package | 64‑lead EPTQFP (Q64.10x10B) |
| Supply voltage VDD_IO | 3.0 V min / 3.3 V typ / 3.6 V max |
| Internal termination | 100 Ω on high‑speed serial lines |
| Maximum data rate | 40 MHz PCLK |
| HS differential output voltage (TXCN=0xFF) | 1300 mVp‑p |
Pin 16 (RSTB/PDB) is the reset and power‑down input; it must be forced high for normal operation.
The 3.3 V supply must be powered before the 1.8 V supply, and REF_CLK must not be applied until the device is fully powered.
No, for the deserializer REF_CLK must not be applied before the device is fully powered up; otherwise a manual reset may be required.
It supports a 40 MHz pixel clock, enabling SVGA 800×600 at 70 fps and WSVGA 1024×600 at 60 fps.