(China (Mainland))
Product Summary
The MT9042CPR is a Multitrunk System Synchronizer. It contains a digital phase-locked loop (DPLL), which provides timing and synchronization signals for multitrunk T1 and E1 primary rate transmission links. The MT9042CPR generates ST-BUS clock and framing signals that are phase locked to either a 2.048MHz, 1.544MHz, or 8kHz input reference. The applications of the MT9042CPR include Synchronization and timing control for multitrunk T1 and E1 systems, ST-BUS clock and frame pulse sources, Primary Trunk Rate Converters.
Parametrics
MT9042CPR absolute maximum ratings: (1)Supply voltage VDD: -0.3 to 7.0V; (2)Voltage on any pin VPIN: -0.3 to VDD+0.3V; (3)Current on any pin IPIN: 20mA; (4)Storage temperature TST: -55 to 125℃; (5)PLCC package power dissipation PPD: 900mW.
Features
MT9042CPR features: (1)Meets jitter requirements for: AT&T TR62411 Stratum 3, 4 and Stratum 4 Enhanced for DS1 interfaces; and for ETSI ETS 300 011, TBR 4, TBR 12 and TBR 13 for E1 interfaces; (2)Provides C1.5, C3, C2, C4, C8 and C16 output clock signals; (3)Provides 8kHz ST-BUS framing signals; (4)Selectable 1.544MHz, 2.048MHz or 8kHz input reference signals; (5)Accepts reference inputs from two independent sources; (6)Provides bit error free reference switching meets phase slope and MTIE requirements; (7)Operates in either Normal, Holdover and Freerun modes.
Diagrams
