SN75DP120RHHT

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The SN75DP120RHHT is a high-speed signal-redriver-buffer device available in plastic small-outline (SO) packages. This signal-redriver-buffer device is designed to improve signal integrity in conjunction with FR-4 and other types of printed-circuit board applications. This device is designed specifically for revision 3.0 and higher of the PCI Express Base Specification, for lane speeds of up to 8.0 Gbit/s. The SN75DP120RHHT belongs to the field of signal buffers, repeaters, splitters, and as such, its primary application is in re-drive and signal integrity performance. It is also used for signal buffering and multiplexing in bus topologies, though these applications are not its primary ones.

In terms of the working principle, the SN75DP120RHHT basically works to redrive, amplify, and broadcast the signal that it receives ensuring that the signal data that reaches its destination is integrity protected. This is done by constantly monitoring and modulating the signal coming in via its pre-emphasis and de-emphasis circuits, buffering it and then sending the buffered output out on its data lanes towards the destination. The SN75DP120RHHT also serves as a multiplexer by enabling it to combine two different receive lanes, that is, its primary interface receive value (RX) and its secondary interface receive value (rx). This is an important characteristic of the SN75DP120RHHT, since most signaling protocols require specific lane assignments that can be easily achieved by multiplexing.

The SN75DP120RHHT also has additional features that make it particularly suitable for its field of usage. It is a low power device, operating with an overall power supply of 2.5 volts, and it has a maximum power dissipation of 0.75W. Furthermore, it offers an enhanced signal integrity performance with a power-up reset circuit, a low-skew, low probability-of-locking, phase-locked loop (PLL), and a slew rate control that can reduce the output edge rate for improved crosstalk and bandwidth. It also has integrated electrostatic discharge (ESD) protection circuits,JEDEC standard pinouts, and a hot-plug detect pin (HPD), among other useful characteristics.

The SN75DP120RHHT, like most other devices of its kind, is a very reliable and versatile interface device. It can help improve the signal integrity of most standard bus topologies, and is capable of operating at speeds up to 8.0 Gbit/s with minimal power consumption and improved signal integrity. For these reasons, the SN75DP120RHHT is an ideal solution for most signal buffering, repeater, and splitter needs.

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