
Allicdata Part #: | NB3V8312CMNGOS-ND |
Manufacturer Part#: |
NB3V8312CMNG |
Price: | $ 7.91 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | ON Semiconductor |
Short Description: | IC CLK BUFFER 1:12 250MHZ 32QFN |
More Detail: | Clock Fanout Buffer (Distribution) IC 1:12 250MHz ... |
DataSheet: | ![]() |
Quantity: | 6 |
1 +: | $ 7.19460 |
10 +: | $ 6.50160 |
100 +: | $ 5.38272 |
500 +: | $ 4.68720 |
1000 +: | $ 4.08240 |
Series: | -- |
Packaging: | Tube |
Part Status: | Active |
Type: | Fanout Buffer (Distribution) |
Number of Circuits: | 1 |
Ratio - Input:Output: | 1:12 |
Differential - Input:Output: | No/No |
Input: | LVCMOS, LVTTL |
Output: | LVCMOS |
Frequency - Max: | 250MHz |
Voltage - Supply: | 1.6 V ~ 3.465 V |
Operating Temperature: | -40°C ~ 85°C |
Mounting Type: | Surface Mount |
Package / Case: | 32-VFQFN Exposed Pad |
Supplier Device Package: | 32-QFN (5x5) |
Base Part Number: | NB3V8312 |
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The NB3V8312CMNG is a dual differential buffer with a delay-locked loop (DLL) clock driver intended for multipoint transmission. It features: single-ended clock input with a selectable duty cycle to 50%; 2 differential clock outputs with independent phase adjustments; up to 4 banks of adaptive delay blocks; an integrated differential loop filter making the clock driver tolerant to supply voltage and process corner variations; a wide supply voltage range of 1.02 to 3.63 V; and current consumption of 4 mA. The clock buffer reduces jitter and makes the clock more stable by accurately synchronizing and exiting clocks. It supports up to 600 RPs of differential clock signalling over length of 24” of the trace.
The NB3V8312CMNG is suitable for a variety of applications, including synchronizing and distributing system clock signals in wide bandwidth clock-distribution systems, synchronizing clock and data signals in communication networks, and distributing clock signals to multiple synchronous logic devices through PCB board traces using equalizing logic. It is also used as a reference clock buffer for a PCI Express card, a reference clock driver for a GbE (Gigabit Ethernet) chip, or a clock driver in an audio/video-processor application.
The working principle of the NB3V8312CMNG is based on the following: the differential input clock generates a set of differential input signals; the differential input clock signals enter a circuit that adjusts their phase; the phase adjusted differential inputs are then buffered and driven to the differential output for longer trace lengths; the integrated control logic is used to adjust the phase of the clock output; and the buffered clock outputs are sent to the termination circuits, where the proper termination is applied to minimize transmission line losses.
The differential loop filter helps to maintain jitter noise performance over various environmental conditions and process corners. The delay-locked loop (DLL) provides smooth transition between the input clock and several output clocks, allowing faster setup and hold times of the clock signals. The control logic also allows simultaneous jitter reduction and frequency synchronization of the clock outputs with the input clock. The NB3V8312CMNG is a very versatile clock buffer, as it provides flexibility in terms of input clock and output clock configurations, while maintaining high jitter noise performance and stability over supply voltage and process corner variations.
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