Details, datasheet, quote on part number: DS21610SN
PartDS21610SN
CategoryCommunication => Network => T/E Carrier and Packetized Products
TitleT/E Carrier and Packetized Products
DescriptionClock Rate Adapter
CompanyMaxim Integrated Products
DatasheetDownload DS21610SN datasheet
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Features, Applications

The is a multirate, low-jitter clock adapter that converts E-carrier and T-carrier clocks to multiple PDH carrier clock rates. Two clock outputs are available that are frequency-locked to the input clock. The clock outputs along with an 8kHz framesync output can be phase-aligned to a frame-sync input. The device is backward compatible with the LXP610 and operates from either or 5V supply. All modes of operation include a standard 8kHz output.

FEATURES

Direct Replacement for LXP610SE Converts E-Carrier Clock Rates to T-Carrier Clock Rates Converts T-Carrier Clock Rates to E-Carrier Clock Rates or 5V Supply Low Jitter Output Multiple Output Clocks Synchronized to Input Clock 8kHz Frequency-Locked Output for all Operation Modes No External Components Required 16-Pin SO and 28-Pin PLCC Industrial Temperature Range: to +85C

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.

Figure 1-1. Block Diagram....................................................................................................................4 Figure 3-1. Nominal Jitter Transfer (1.544MHz CLKIN 2.048MHz CLKOUT1)..................................6 Figure 3-2. Nominal Jitter Transfer (2.048MHz CLKIN 1.544MHz CLKOUT1)..................................7 Figure 4-1. SYNCIN/CLKIN to CLKOUT1/SYNCOUT and CLKOUT2................................................ 10 Figure 4-2. Output Frame-Sync Alignment When CLKOUT1..................................... 11 Figure 4-3. Output Frame-Sync Alignment When CLKOUT1.................................... 11 Figure 4-4. Output Frame-Sync Alignment When CLKOUT1..................................... 12 Figure 4-5. Output Frame-Sync Alignment When CLKOUT1.................................... 12

Table 1-A. Pin Description....................................................................................................................3 Table 1-B. Pin Name Cross-Reference to LXP610...............................................................................3 Table 2-A. Program Pin Functions (SEL = 0)........................................................................................5 Table 2-B. Program Pin Functions (SEL = 1)........................................................................................5 Table 3-A. Output Jitter Specifications, = 1.544MHz...........................................................6 Table 3-B. Output Jitter Specifications, = 2.048MHz...........................................................6

PIN PLCC SO NAME P3 SYNCOUT N.C. CLKOUT2 CLKIN CLKOUT1 P1 VSS P2 SEL FSP SYNCIN P4 VDD TYPE Input Output Input Output Input Supply Input Supply FUNCTION Program Pin 3. Used to select the various combinations of clock and sync outputs. Synchronization Pulse Output. An 8kHz output that can be synchronized to the clock outputs and SYNCIN (if present). No Connect Clock Output or E1 carrier clock output referenced to CLKIN. Clock Input. Reference Clock Input. CLKOUT1 and CLKOUT2 will be referenced to this clock. Clock Output or E1 carrier clock output referenced to CLKIN. Program Pin 3. Used to select the various combinations of clock and sync outputs. Ground Program Pin 2. Used to select the various combinations of clock and sync outputs. Clock Mode Select. T-carrier/E-carrier mode select. Frame Synchronization Pulse Polarity. Used to change the polarity of the SYNCOUT output. Synchronization Pulse Input. Used to synchronize the clock outputs and SYNCOUT to CLKIN and SYNCIN. SYNCIN should be tied high or low when not in use. Program Pin 4. Used to select the various combinations of clock and sync outputs. Positive Supply, 5V 5%

DS21610 P3 SYNCOUT CLKOUT2 CLKIN CLKOUT1 P1 VSS P2 N.C. LXP610 P3 FSO HFO CLKI CLKO P1 GND P2 N.C. FUNCTION Program Pin 3 Synchronization Pulse Output Clock 2 Output Clock Input Clock 1 Output Program pin 1 Ground Program Pin 2 No Connect


 

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