SY87701LSI

Ratio - Input:Output:	3:3
Base Part Number:	SY87701
Supplier Device Package:	32-TQFP-EP (7x7)
Package / Case:	32-TQFP Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	3.15 V ~ 3.45 V
Frequency - Max:	1.25Gbps
Differential - Input:Output:	Yes/Yes
Series:	AnyRate®
Number of Circuits:	1
Output:	PECL
Input:	PECL, TTL
Main Purpose:	Ethernet, SONET/SDH, ATM applications
PLL:	Yes
Part Status:	Obsolete
Packaging:	Tray

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SY87701LSI stands for General Purpose Silicon CMOS LSI, which is a type of integrated chip with very low power consumption. It is highly integrated and includes integrated current-mode logic, timing controllers and oscillators. The SY87701LSI is one of the most popular products from Silicon CMOS LSI, with several applications in the field of clock/timing-application specific, such as the processor, memory and bus control, etc.SY87701LSI is characterized by a wide range of features including low-power consumption, low cost and high reliability. Moreover, it has much flexibility in design, and is extensively applied in the field of clock/timing-application specific due to its capability to deliver consistent performance with minimum clock cycle time.The operating power of the SY87701LSI is usually around 5V and the maximum power consumption is around 200mW. Besides, the integrated current-mode logic provides the speedup ratio up to thirty times that of standard logic. In addition, SY87701LSI chip has an oscillator with a frequency which is heavily dependent upon the temperature, ensuring high accuracy regardless of ambient temperature.This chip also contains a high performance oscillator and timing controller, which greatly enhance its performance by faster response and lower power consumption. The integrated swing compensator circuit can lower the power consumption even further and minimize the oscillation effect. However, it should be noted that SY87701LSI chip does not include its own PLL, therefore an external PLL is required for certain applications.Furthermore, the SY87701LSI chip also contains a wide range of features for use in the clock/timing-application specific including Timing Wakeup, Clock Select, Wakeup Levels, Clock Tuning and Clock Output Selection.The Timing Wakeup feature is used to program the SY87701LSI to repeat an instruction at a precise interval by using a dedicated programmable timer. It works by setting an instruction at the end of a specific period, after which the instructions are repeated until explicitly stopped. This feature is widely used in applications such as wireless sensing and PLL control.The Clock Select feature allows the user to select which clock sources should be used as the system clock. It supports several clock sources such as external clock, internal clock and secondary clock. This feature is beneficial to applications requiring the usage of multiple clock sources.The Wakeup Levels feature works by setting the desired number of clocks in which an instruction should be executed before the processor enters a lower-power sleep state. This helps ensure that the processor does not remain in a low-power state for extended periods of time.The Clock Tuning feature is a way to adjust the timing accuracy of the SY87701LSI chip. By changing the period of the oscillator, an adjustment of ±32 periods is allowed for improvement in system latency.Finally, the Clock Output Selection is another feature that is used to control the output clock from the SY87701LSI chip. This feature enables the user to select the desired output clock, which is beneficial in applications requiring several clocks to be outputted at the same time.Overall, SY87701LSI is a highly integrated, low power consuming and highly reliable chip which is extensively applied in the field of Clock/timing-application specific. It has a wide range of features that make it an ideal choice for clock and timing devices. Its low power consumption and several other features enable it to be used in a variety of applications ranging from wireless sensing to PLL control. Moreover, the integrated current-mode logic, oscillators and timing controllers enable it to deliver consistent performance with minimum clock cycle time. By utilizing the Wakeup Levels, Clock Output Selection and Clock Tuning features, applications can be optimized for better performance and power consumption. Finally, the SY87701LSI chip also supports several clock sources, making it a great choice for applications requiring the usage of multiple clock sources.

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