89HT0816PYDBCI8

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Interface - Specialized

The 89HT0816PYDBCI8 is a four-channel bus differential receiver designed for use in networking and computing applications. It is specifically designed for use in LAN applications, including Ethernet, Fibre Channel, Infiniband, HyperTransport, Serial RapidIO and 10G-LX4. The device is intended to be used as the receiver in one of the differential pairs in the backplane of a networking system.

Application Field

The 89HT0816PYDBCI8 is designed for use in four-channel systems in the LAN environment. Its main applications are in Ethernet, Fibre Channel, Infiniband, HyperTransport, Serial RapidIO and 10G-LX4. It is also possible to use the device as the receiver of a differential pair in a two-channel system, allowing for a lower-cost implementation of a two-channel system.

Working Principle

The 89HT0816PYDBCI8 works on the principle of differential signaling. In essence, two signals are sent over a pair of wires. The positive signal (Pos) is sent on one wire, and the negative signal (Neg) is sent on the other. The device compares the two signals and computes an output based on the difference between the two. This allows for greater noise immunity, since any noise common to both signals will be cancelled out.

The 89HT0816PYDBCI8 operates on an open-collector principle. At the open-collector output, the device creates an open-drain circuit, in which the negative signal (Neg) is continuously compared to the positive signal (Pos). When the difference between the two exceeds the device’s thresholds, it will pull down the output line and create a logic low at the output terminal. This logic low can be used to indicate an error or control the system’s flow control or power management functionality.

Conclusion

The 89HT0816PYDBCI8 is a four-channel bus differential receiver designed for use in networking and computing applications. Its main applications are in Ethernet, Fibre Channel, Infiniband, HyperTransport, Serial RapidIO and 10G-LX4. The device works on the principle of differential signaling, and it operates on an open-collector principle. This allows for greater noise immunity, enabling the device to be used in high-speed, high-noise LAN applications.

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