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DS21600/DS21602/DS21604 3.3V/5V Clock Rate Adapter
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GENERAL DESCRIPTION
The DS21600/DS21602/DS21604 are multiple-rate clock adapters that convert between E-carrier and Tcarrier clocks rates. A T1 or E1 clock output, CLKOUT1, is available, along with a higher multiple rate clock output, CLKOUT2. CLKOUT1 and CLKOUT2 are frequency locked to the clock input CLKIN. The clock outputs, along with frame-sync output, can be phase-aligned to a frame-sync input. The devices are fully compatible with the LXP600A, LXP602, and LXP604, and operate from either a 5V or 3.3V supply. All operation modes include a standard 8kHz output. The DS21600/DS21602/DS21604 are available in 16-pin SO, and are rated for industrial temperatures.
FEATURES
§ § § § § § § § § § Direct Drop-In Replacement for LXP600ASE, LXP602SE, and LXP604SE Converts E-Carrier Clock Rates to T-Carrier Clock Rates Converts T-Carrier Clock Rates to E-Carrier Clock Rates 3.3V 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 8-Pin DIP Industrial Temperature Range: -40°C to +85°C
ORDERING INFORMATION
PART DS21600SN DS21600N DS21602SN DS21602N DS21604SN DS21604N TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C
PIN CONFIGURATION
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DataSheet4U.com PIN-PACKAGE TOP VIEW 16 SO 8 DIP 16 SO 8 DIP 16 SO 8 DIP
Dallas Semiconductor DS21600/2/4
FREQUENCY CONVERSIONS (MHz)
PART DS21600 DS21602 DS21604 CLKIN 1.544 2.048 1.544 2.048 1.544 4.096 CLKOUT1 2.048 1.544 2.048 1.544 4.096 1.544 CLKOUT2 6.144 6.176 8.192 6.176 8.192 6.176
SO
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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.
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REV: 113004
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DS21600/DS21602/DS21604 3.3V/5V Clock Rate Adapter
TABLE OF CONTENTS
1.
1.1
PIN DESCRIPTION ......................................................................................................................3
PIN NAME CROSS-REFERENCE TO LXP60X ....................................................................................................3
2.
2.1 2.2
FUNCTIONAL DESCRIPTION......................................................................................................4
MODE SELECT ................................................................................................................................................4 FRAME SYNC INPUT ........................................................................................................................................4
3.
3.1
OUTPUT JITTER ..........................................................................................................................4
JITTER TRANSFER ..........................................................................................................................................5
4. 5. 6.
OPERATING PARAMETERS .......................................................................................................7 PACKAGE INFORMATION ........................................................................................................11 REVISION HISTORY ..................................................................................................................13
LIST OF FIGURES
Figure 1-1. Block Diagram ....................................................................................................................3 Figure 3-1. Nominal Jitter Transer for 2.048MHz to 1.544MHz Conversion ..........................................5 Figure 3-2. Nominal Jitter Transfer for 1.544MHz to 2.048MHz Conversion .........................................6 Figure 4-1. DS21600/DS21602 High-to-Low Frequency Conversion Frame-Sync Alignment ...............8
DataSheet4U.com Figure 4-2. DS21604 High-To-Low Frequency Conversion Frame-Sync Alignment..............................9
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Figure 4-3. DS21600 Low-to-High Frequency Conversion Frame-Sync Alignment...............................9 Figure 4-4. DS21602 Low-to-High Frequency Conversion Frame-Sync Alignment............................. 10 Figure 4-5. DS21604 Low-to-High Frequency Conversion Frame-Sync Alignment............................. 10
LIST OF TABLES
Table 1-A. Pin Description ....................................................................................................................3 Table 1-B. Pin Name Cross-Reference to LXP60x ...............................................................................3 Table 2-A. Frequency Conversions (MHz) ............................................................................................4 Table 3-A. Output Jitter Specifications...................