| Parameters | 
                                                                                                            
                                            | Mount | Surface Mount | 
                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 100-LQFP | 
                                                                            
                                            | Number of Pins | 100 | 
                                                                            
                                            | Weight | 1.319103g | 
                                                                            
                                            | Operating Temperature | 0°C~70°C | 
                                                                            
                                            | Packaging | Tray | 
                                                                            
                                            | Published | 2004 | 
                                                                            
                                            | JESD-609 Code | e0 | 
                                                                            
                                            | Pbfree Code | no | 
                                                                            
                                            | Part Status | Obsolete | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 
                                                                            
                                            | Number of Terminations | 100 | 
                                                                            
                                            | ECCN Code | EAR99 | 
                                                                            
                                            | Terminal Finish | Tin/Lead (Sn/Pb) | 
                                                                            
                                            | Subcategory | Other Telecom ICs | 
                                                                            
                                            | Technology | CMOS | 
                                                                            
                                            | Voltage - Supply | 4.75V~5.25V | 
                                                                            
                                            | Terminal Position | QUAD | 
                                                                            
                                            | Terminal Form | GULL WING | 
                                                                            
                                            | Peak Reflow Temperature (Cel) | 245 | 
                                                                            
                                            | Supply Voltage | 5V | 
                                                                            
                                            | Terminal Pitch | 0.5mm | 
                                                                            
                                            | Base Part Number | DS21554 | 
                                                                            
                                            | Function | Single-Chip Transceiver | 
                                                                            
                                            | Operating Supply Voltage | 5V | 
                                                                            
                                            | Power Supplies | 5V | 
                                                                            
                                            | Interface | E1, HDLC, J1, T1 | 
                                                                            
                                            | Operating Supply Current | 75mA | 
                                                                            
                                            | Max Supply Current | 75mA | 
                                                                            
                                            | Logic Function | Transceiver | 
                                                                            
                                            | Data Rate | 1.544 Mbps | 
                                                                            
                                            | Number of Transceivers | 1 | 
                                                                            
                                            | Height | 1.45mm | 
                                                                            
                                            | Length | 14mm | 
                                                                            
                                            | Width | 14mm | 
                                                                            
                                            | Radiation Hardening | No | 
                                                                            
                                            | RoHS Status | Non-RoHS Compliant | 
                                                                            
                                            | Lead Free | Contains Lead | 
                                                                                                    
                            
                         
                                                DS21554L Overview
100-LQFP package is used to save board space.Telecommunications equipment is packed according to Tray's method.The mounting type of this telecom circuit is Surface Mount.A higher supply voltage for 4.75V~5.25V will improve efficiency.Reliable performance can be offered when the operating temperature is set at 0°C~70°C.A Surface Mount-axis mounts telecom switching.There are 100 terminations can be found in telecom switching configuration.It operates with a voltage of 5V.The telecom interface contains 100 pins.Telecom switching's base part number of DS21554 can be used to find more related parts.In order to provide designers with a great deal of flexibility, this telecom circuit operates on the supply voltage of 5V.Designed to work with the supply current of 75mA, it provides designers with a great deal of flexibility.Other Telecom ICs is a subcategory of telecommunications device	.Normally, the supply current should remain at 75mA.Integrates 1 transceivers.
DS21554L Features
Available in the 100-LQFP package
Operating supply voltage of 5V
Operating supply current of 75mA
1 transceivers
DS21554L Applications
There are a lot of Maxim Integrated DS21554L Telecom applications. 
- T1 Rates PCM Line Interface
- ATM Switches
- Interfaces to DS3 
- CSU/DSU E1/T1/J1 Interface
- Fault Tolerant Systems
- E1 Network Equipment
- DSLAMs
- Routers
- High-Density T1/E1/J1 interfaces for Multiplexers
- BITS Timing