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78P2352 参数 Datasheet PDF下载

78P2352图片预览
型号: 78P2352
PDF下载: 下载PDF文件 查看货源
内容描述: 双通道OC - 3 / STM1 - E / E4 LIU [Dual Channel OC-3/ STM1-E/ E4 LIU]
分类和应用:
文件页数/大小: 42 页 / 754 K
品牌: TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
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78P2352  
Dual Channel  
OC-3/ STM1-E/ E4 LIU  
ELECTRICAL SPECIFICATIONS (continued)  
V
T = 6.43ns  
0.60  
(Note 1)  
0.55  
(Note 1)  
Nominal  
Pulse  
0.50  
1.608ns  
1ns  
1.608ns  
1ns  
0.45  
1ns  
0.1ns  
0.1ns  
0.1ns  
0.40  
0.1ns  
0.35ns  
0.35ns  
0.05  
Nominal  
Zero Level  
(Note 2)  
-0.05  
-0.40  
-0.45  
-0.50  
-0.55  
-0.60  
1ns  
1ns  
1.608ns  
1ns  
1.608ns  
(Note 1)  
(Note 1)  
Note 1 – The maximum “steady state” amplitude should not exceed the 0.55V limit. Overshoots and other transients are permitted to fall into  
the shaded area bounded by the amplitude levels 0.55V and 0.6V, provided that they do not exceed the steady state level by more than  
0.05V.  
Note 2 – For all measurements using these masks, the signal should be AC coupled, using a capacitor of not less than 0.01 µF, to the input of  
the oscilloscope used for measurements. The nominal zero level for both masks should be aligned with the oscilloscope trace with no input  
signal. With the signal then applied, the vertical position of the trace can be adjusted with the objective of meeting the limits of the masks. Any  
such adjustment should be the same for both masks and should not exceed ±0.05V. This may be checked by removing the input signal again  
and verifying that the trace lies with ±0.05V of the nominal zero level of the masks.  
Note 3 – Each pulse in a coded pulse sequence should meet the limits of the relevant mask, irrespective of the state of the preceding or  
succeeding pulses, with both pulse masks fixed in the same relation to a common timing reference, i.e. with their nominal start and finish  
edges coincident. The masks allow for HF jitter caused by intersymbol interference in the output stage, but not for jitter present in the timing  
signal associated with the source of the interface signal. When using an oscilloscope technique to determine pulse compliance with the mask,  
it is important that successive traces of the pulses overlay in order to suppress the effects of low frequency jitter. This can be accomplished by  
several techniques [e.g. a) triggering the oscilloscope on the measured waveform or b) providing both the oscilloscope and the pulse output  
circuits with the same clock signal].  
Note 4 – For the purpose of these masks, the rise time and decay time should be measured between –0.4V and 0.4V, and should not exceed  
2ns.  
Figure 13 – Mask of a Pulse corresponding to a binary Zero in STS-3/STM-1 mode.  
Page: 31 of 42  
2006 Teridian Semiconductor Corporation  
Rev. 2.4  
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