SY89425 Micrel Semiconductor, SY89425 Datasheet - Page 2

• Manufacturer Part Number: SY89425
• Description: DUAL SONET OC-12 CLOCK SYNTHESIZER
• Manufacturer: Micrel Semiconductor

Micrel
FUNCTIONAL BLOCK DIAGRAM
SEL39A (TTL)
SEL78A (TTL)
SEL78B (TTL)
SEL39B (TTL)
RFCKA (TTL)
RFCKB (TTL)
V
3
V
2
CCB
CCA
/f
/f
GND
GND
2
3
FEEDBACK
FEEDBACK
PUMP
DIVIDER
(8/12/16)
PUMP
DIVIDER
(8/12/16)
CHG
CHG
2
FLTRBP/N
FLTRAP/N
622MHz
622MHz
VCO
VCO
PLL A
PLL B
V
V
CCOA
CCOB
RSTA (TTL)
RSTB (TTL)
CK622AP
CK622AN
CK622BP
CK622BN
(PECL)
(PECL)
ClockWorks™
SY89425