IDT49FCT3805BSO

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The IDT49FCT3805BSO is a single, low-skew 3.3V clock buffer used to distribute and fan-out clock signals. It is designed with features to minimize the effects of board parasitics on signal integrity. The buffer is used to isolate clock sources from receivers and reduce the number of clock networks when distributing highly-integrated data paths.

The IDT49FCT3805BSO is composed of a high-frequency emitter-coupled logic (ECL) differential input stage and a complementary metal-oxide semiconductor (CMOS) differential output stage. The buffer accepts an ECL 50 Ω differential input, up to a frequency of 2000 MHz with one input at logic low level and the other in tristate (passive).

The output stage is designed with a push-pull output at the differential outputs and a TTL compatible single-ended output. The buffers include input, output and power pins to enhance system level performance.

Applications for the IDT49FCT3805BSO include distributing, fan-out and multiplexing clocks in high-speed, complex data paths. This device is best suited to driving terminations, interconnects, delay lines, registers and logic devices. The buffer reduces the effects of board parasitics and flat-top skews to minimize total-jitter requirements for the system.

The full performance of the IDT49FCT3805BSO is realized through careful design of the power architecture and choice of materials. The power supply must meet both minimum and maximum current and voltage specifications in operation and can tolerate up to an 8 V differential between the positive and negative supplies when in standby. Onboard capacitors and decoupling capacitors are used to minimize unwanted noise and supply voltage fluctuations.

The IDT49FCT3805BSO working principle is based on the input latch and regenerative output drivers. The latch serves to control the level of the input signals, which is then regenerated by the output drivers in differential or single-ended mode. The output cone resistors provide additional damping to ensure proper operation over the full range of output frequencies. The buffer\'s operation and timing characteristics also depend on the input latch and the output drivers.

The output drivers in the IDT49FCT3805BSO are designed using an advanced low-power consumption circuit. They translate the input logic into the appropriate logic levels at the outputs. The buffer’s integrated termination diodes buffer the signal before it reaches the driver in order to ensure low-skew operation and low power consumption.

The IDT49FCT3805BSO is a single, low-skew 3.3V clock buffer used to distribute and fan-out clock signals. It can be used to isolate clock sources from receivers, reduce board parasitics, and minimize the effects of board parasitics on signal integrity. The device can tolerate up to an 8 V differential between the positive and negative supplies when in standby. The buffer’s working principle is based on the input latch and regenerative output drivers, and the output cone resistors provide additional damping to ensure proper operation over the full range of output frequencies. The device is suited for use in applications that require distributing, fan-out or multiplexing clocks in high-speed, complex data paths.

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