LMH2190TMX-38/NOPB vs 100315SCX

Part Number	LMH2190TMX-38/NOPB	100315SCX
Category	Clock/Timing - Clock Buffers, Drivers	Clock/Timing - Clock Buffers, Drivers
Manufacturer	Texas Instruments	Fairchild Semiconductor
Description	IC CLK BUFFER 1:4 27MHZ 16DSBGA	IC CLK BUFFER 1:4 750MHZ 16SOIC
Package	Cut Tape (CT)	16-SOIC (0.154", 3.90mm Width)
Series	-	-
Type	Fanout Buffer (Distribution)	Fanout Buffer (Distribution)
Voltage - Supply	2.5V ~ 5.5V	4.2 V ~ 5.7 V
Operating Temperature	-20°C ~ 85°C	0°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	16-WFBGA, DSBGA	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package	16-DSBGA	16-SOIC
Output	Clock	Clock
Frequency - Max	27 MHz	750MHz
Number of Circuits	1	1
Input	Clock	Clock
Ratio - Input:Output	1:4	1:4
Differential - Input:Output	No/No	Yes/Yes

1. What is the function of a clock driver?

The function of a clock driver is to enhance the driving capability of the clock signal, ensuring that the signal can be transmitted further or drive more loads without causing signal attenuation or distortion. It is particularly important in high-frequency and high load applications.
2. How can clock buffers reduce jitter?

High quality clock buffers are typically designed with low jitter characteristics to ensure phase consistency of output signals and reduce phase noise during transmission. This is crucial for high-precision clock allocation, such as in communication and data transmission applications.
3. What output configurations does the clock buffer support?

Clock buffers typically support multiple output configurations, including single ended output, differential output, programmable delay, or selectable output frequency, to accommodate different system requirements.
4. How to evaluate the performance of clock drivers?

When evaluating clock drivers, several key parameters need to be considered:

Driving capability (load capacity)

Output signal integrity

Phase noise and jitter

Power noise suppression

Power supply voltage range and power consumption