參數(shù)資料
型號(hào): SY89425JC
廠商: MICREL INC
元件分類: 數(shù)字傳輸電路
英文描述: DUAL SONET OC-12 CLOCK SYNTHESIZER
中文描述: ATM/SONET/SDH SUPPORT CIRCUIT, PQCC28
封裝: PLASTIC, LCC-28
文件頁(yè)數(shù): 5/8頁(yè)
文件大?。?/td> 93K
代理商: SY89425JC
5
ClockWorks
SY89425
Micrel
TTL
TIMING WAVEFORMS
RFCK
Input
CK622
Output
tp 622
Parameter
Min.
Typ.
Max.
Units
Condition
VCO Center Frequency
622.08
±
1%
±
20
±
20
±
10
MHz
Nominal
ppm
ppm
ppm
77.76MHz
51.84MHz
38.88MHz
Reference Clock (RFCK) Input Duty Cycle
45
55
% of UI
Acquisition Lock Time
15
μ
sec
TTL Output Rise/Fall Time
2
ns
10% to 90% of amplitude, 15pF load
PECL Output Rise/Fall Time
500
ps
10% to 90%, 50
load, 5pF cap
CK622 Output Duty Cycle
45
55
% of UI
tRST
RST pulse width
1
μ
sec
tp622 Static Phase Offset of CK622
0.7
ns
AC ELECTRICAL CHARACTERISTICS
V
CCA
= V
CCB
= V
CCOA
=V
CCOB
= +5V
±
5%; GND = 0V; T
A
= 0
°
C to 85
°
C
Reference Clock (RFCK)
Frequency Tolerance
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