DS21448A1

Maxim > Design Support > Technical Documents > Application Notes > T/E Carrier and Packetized > APP 351 Keywords: transformers, turns ratio, inductance, primary winding, secondary winding, isolation voltage, Pulse Engineering, Halo Electronics, Bel Fuse, Coev Magnetics, Tyco APPLICATION NOTE 351 T1/E1 and T3/E3 Transformer Selection Guide Sep 17, 2007 Abstract: This application note lists vender transformers that meet the specifications required for use with Maxim Single-Chip Transceivers (SCTs) and Line Interface Units (LIUs). Recommended transformers are made based on the following transformer specifications: turns ratio, primary inductance, leakage inductance, interwinding capacitance, and DC resistance for both 5V and 3.3V operation. Actual results are dependant on the integrity of the PCB design and other termination circuitry and should be verified by the customer. Introduction This application note applies to the following products: T1/E1 LIUs T1 SCTs E1 SCTs T1/E1 SCTs T1/E1 Ethernet/Serial TDM T3/E3 LIUs T3/E3 SCTs DS2148 DS2151 DS2153 DS2156 DS33R11 DS3150 DS3170 DS21348 DS2152 DS2154 DS2155 DS33R41 DS3151 DS3171 DS21Q48 DS21352 DS21354 DS21Q55   DS3152 DS3172 DS21Q348 DS21552 DS21554 DS21455   DS3153 DS3173 DS21448 DS21Q552 DS21Q554 DS21458   DS3154 DS3174 DS2149 DS21Q352 DS21Q354 DS26502   DS3251 DS3181 DS21349 DS2196 DS21Q59 DS26503   DS3252 DS3182 DS26303   DS21Q58 DS26504   DS3253 DS3183 DS26324   DS21Q50 DS26518   DS3254 DS3184 DS26334     DS26519   DS32504         DS26521   DS32506         DS26522   DS32508         DS26524   DS32512         DS26528       Table 1 shows the specifications for our 5V devices and Table 2 shows the specifications for our 3.3V devices. The specifications for selecting an appropriate transformer are given in the data sheets for each device and repeated below for simplicity. Table 3 lists the transformer part numbers from multiple vendors and matches them with the parts listed above. Page 1 of 21 Table 1. Transformer Specifications for 5V Operation Specification Recommended Value Turns Ratio, 5V Applications 1:1 (RX) and 1:15 or 1:1.36 (TX) ±5% Primary Inductance 600µH minimum Leakage Inductance 1.0µH maximum Interwinding Capacitance 40pF maximum   Transmit Transformer DC Resistance Primary (Device Side) 1.2Ω maximum Secondary 1.2Ω maximum   Receive Transformer DC Resistance Primary (Device Side) 1.2Ω maximum Secondary 1.2Ω maximum Table 2. Transformer Specifications for 3.3V Operation Specification Recommended Value Turns Ratio, 3.3V Applications 1:1 (RX) and 1:2 (TX) ±2% Primary Inductance 600µH minimum Leakage Inductance 1.0µH maximum Interwinding Capacitance 40pF maximum   Transmit Transformer DC Resistance Primary (Device Side) 1.0Ω maximum Secondary 2.0Ω maximum   Receive Transformer DC Resistance Primary (Device Side) 1.5Ω maximum Secondary 1.2Ω maximum Table 3. Transformer Part Information Vendor Part Turns Ratio No. of Ports Package Type No. of Pins Temp Range Hierarchy Pulse PE65388 1:1.15CT TX only Through Hole 6 0°C to +70°C T1/E1 Maxim Device DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, Page 2 of 21 DS21Q554 PE65586 PE65351 PE64936 PE65565 1:1.36CT 1:2CT 1CT:1 1:1.15CT and 1:2CT TX only TX only RX only 1 Through Hole Through Hole Through Hole Through Hole 6 6 6 6 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C T1/E1 DS2151, DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 T1/E1 DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 T1/E1 DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 T1/E1 DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 DS2196, DS2151, DS2152, DS2153, Page 3 of 21 TX1315 TX1320 TX1277 PE68882 PE64952 1CT:1CT 1CT:1.36CT 1CT:1CT and 1CT:2CT RX only TX Only 1 1CT:1.15CT and 1 1CT:1CT 1:2CT and 1:1.36 1 Surface Mount Surface Mount Surface Mount Surface Mount Through Hole 6 6 14 14 14 -40°C to T1/E1 +85°C DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 -40°C to T1/E1 +85°C DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59, DS33R11, DS33R41 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 0°C to +70°C T1/E1 DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, Page 4 of 21 DS21Q552, DS21554, DS21Q554 PE64953 PE65865 T1076 T1136 1:2CT and 1:2CT 1:1.15CT and 1CT:2CT 1:1.15CT and 1CT:2CT 1 1 1 1CT:1CT and 1 1CT:1.36CT Through Hole Surface Mount Surface Mount Surface Mount 14 16 16 16 T1/E1 DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 T1/E1 DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 0°C to +70°C T1/E1 DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, DS21Q552, DS21554, DS21Q554 T1/E1 DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 0°C to +70°C 0°C to +70°C PE68678 1CT:1CT and 1CT:2CT 1 Surface Mount 16 0°C to +70°C PE68877 1CT:1CT and 1CT:2CT 1 Surface Mount 12 -40°C to T1/E1 +85°C DS33R11, DS33R41 DS2155, DS2156, Page 5 of 21 T1094 TX1099 TX1467 TX1473 T1068 TX1475 1CT:1CT and 1CT:2CT 1CT:1:0.8 and 1CT:1:0.8 1CT:1:1 and 1CT:1:1 1 1 1 1:2 and 1:1 4 1:2CT and 1:1CT 1CT:1CT and 1CT:2CT 4 4 Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount 16 16 16 32 40 32 -40°C to T1/E1 +85°C DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 -40°C to T1/E1 +85°C DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21348, DS21Q348, DS21448, DS26502, DS26503, DS26504, DS26521, DS26522, DS33R11 -40°C to T1/E1 +85°C DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 -40°C to T1/E1 +85°C DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 0°C to +70°C T1/E1 DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 T1/E1 DS26324, DS26334, DS26518, DS26519, DS26524, DS26528 -40°C to +85°C Page 6 of 21 T1114 T1108 TX1292 PE65968 PE65969 1CT:1CT and 1CT:2CT 1:2CT and 1:1CT 1:1.36 and 1:1 1:2CT 1:2CT 4 4 4 RX or TX RX or TX Surface Mount Surface Mount Surface Mount Surface Mount Through Hole 40 40 40 6 6 -40°C to T1/E1 +85°C DS26303 -40°C to T1/E1 +85°C DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, DS21Q552, DS21554, DS21Q554 0°C to +70°C T3/E3 DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184, DS3251, DS3252, DS3253, DS3254 T3/E3 DS3150, DS3151, DS3152, DS3153, DS3154, DS3170, DS3171, DS3172, DS3173, DS3174, DS3181, DS3182, DS3183, DS3184 0°C to +70°C DS3150, DS3151, DS3152, Page 7 of 21 T3002 T3012 T3021 T3047 T3049 1:2CT 1:2CT 1:2CT and 1:2CT 1:1 1:2 RX or TX RX or TX 1 4 4 Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount 6 6 16 32 32 -40°C to T3/E3 +85°C -40°C to T3/E3 +85°C DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 -40°C to T3/E3 +85°C DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 -40°C to T3/E3 +85°C DS32501, DS32502, DS32503, DS32504, DS32512 -40°C to T3/E3 +85°C DS3150, DS3151, DS3152, DS3153, DS3154, DS3170, DS3171, DS3172, DS3173, DS3174, DS3181, DS3182, DS3183, DS3184 HALO Electronics TG381505A 1:1.15CT TX only Through Hole 6 DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, Page 8 of 21 DS21Q554 TD701205A TD151205A TD021205A TG041505NS 1:1.36CT 1:2CT 1CT:1 1CT:1CT TX only TX only RX only RX only Through Hole Through Hole Through Hole Surface Mount 6 6 6 6 0°C to +70°C 0°C to +70°C 0°C to +70°C T1/E1 DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 T1/E1 DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 T1/E1 DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 -40°C to T1/E1 +85°C DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, Page 9 of 21 DS21554, DS21Q554 TG151505NS TG381505NS TG701505NS TD631505D TG631505N1 TG351505N1 1CT:2CT 1:1.15CT 1:1.36CT 1:1.15CT and 1:2CT 1:1.15CT and 1CT:2CT TX only TX only TX only 1 1 1CT:1.15CT and 1 1CT:1CT Surface Mount Surface Mount Surface Mount Through Hole Surface Mount Surface Mount 6 6 6 14 16 16 -40°C to T1/E1 +85°C DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 Page 10 of 21 TGSP1467N1 TG281505N1 TG741205N1 1CT:1:1 and 1CT:1:1 1CT:1CT and 1CT:1.36C 1CT:1CT and 1CT:2CT 1 1 1 TG831:2 and 1:1 4 S006NU TG741205N1 TG070206NS 1CT:1CT and 1CT:2CT 1 1:2CT TX or RX only Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount 16 16 16 32 16 6 -40°C to T1/E1 +85°C DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 0°C to +70°C DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 T1/E1 -40°C to T1/E1 +85°C DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 0°C to +70°C T1/E1 DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 T3/E3 DS3150, DS3151, DS3152, DS3153, DS3154 0°C to +70°C DS3150, Page 11 of 21 TD070206NE TG070356NS TG070406N1 TG050206NU 1:2CT TX or RX only 1:2CT TX or RX only 1:2CT and 1:2CT 1:2 1 4 Through Hole Surface Mount Surface Mount Surface Mount 6 6 16 32 0°C to +70°C T3/E3 T3/E3 DS3150, DS3151, DS3152, DS3153, DS3154 -40°C to T3/E3 +85°C DS3150, DS3151, DS3152, DS3153, DS3154 -40°C to T3/E3 +85°C DS3150, DS3151, DS3152, DS3153, DS3154 0°C to +70°C T1/E1 DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 T1/E1 DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, DS21Q552, DS21554, DS21Q554 T1/E1 DS21352, DS21354, DS2148, DS2155, DS2196, DS21Q352, DS21Q354, DS21Q48 0°C to +70°C Bel 1:1.15CT S553and 3855-02 1CT:2CT S5531:2CT and 0013-02 1:1.36 S5531CT:2CT 0013-01 and 1:1 S554- 1:2CT 1 1 1 1 Surface Mount Surface Mount Surface Mount Surface 16 16 16 6 DS3151, DS3152, DS3153, DS3154 0°C to +70°C 0°C to +70°C 0°C to T3/E3 DS3150, DS3151, DS3152, DS3153, DS3154, Page 12 of 21 3184-01 05541:2CT 3184-01 1CT:1:1 S553and 6500-H5 1CT:1:1 S5541:2 6500-21 Mount 1 4 4 S5531:2 and 1:1 4 6500-C8 05531:1.15CT 0013-RC TX only Through Hole Surface Mount Surface Mount Surface Mount Through Hole +70°C 6 32 32 32 6 0°C to +70°C DS3181, DS3182, DS3183, DS3184 T3/E3 DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21554, DS21Q552, DS21Q554 -40°C to T3/E3 +85°C DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 -40°C to T1/E1 +85°C DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 0°C to +70°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 T1/E1 DS2196, DS2151, DS2152, DS2153, Page 13 of 21 05531CT:1 0013-BC 05530013-1J 05530013-2J T2099S T2006 1:2CT and 1:2CT 1:2CT and 1:1.36 RX only 1 1 1CT:1CT and 1 1CT:1.36CT 1:1.15CT TX only Through Hole Through Hole Through Hole Surface Mount Through Hole 6 14 14 16 6 0°C to +70°C T1/E1 DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 T1/E1 DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 T1/E1 DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, DS21Q552, DS21554, DS21Q554 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, DS21Q552, DS21554, DS21Q554 0°C to +70°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 0°C to +70°C 0°C to +70°C T1/E1 DS2151, Page 14 of 21 T2007 T2028S T0034 1:1.36CT 1:1.15CT and 1CT:2CT 1:2CT 1CT:1CT S553and 6500-76 1CT:2CT 1CT:1CT S553and 6500-E6 1CT:2CT 1CT:1:0.8 S553and 6500-H6 1CT:1:0.8 Coev TX only 1 TX only 1 1 1 Through Hole Surface Mount Through Hole Surface Mount Surface Mount Surface Mount 6 16 6 16 16 32 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C T1/E1 DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 T1/E1 DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 T1/E1 DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 T1/E1 DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 -40°C to T1/E1 +85°C DS21348, DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 -40°C to T1/E1 +85°C DS21348, DS21Q348, DS21448, DS2155, DS2156 DS2151, Page 15 of 21 PT-311 PT311ET PT-306 PT306ET PT-312 1:1.36CT 1:1.36CT 1:2CT 1:2CT 1CT:1 TX only TX only TX only TX only RX only Through Hole Through Hole Through Hole Through Hole Through Hole 6 6 6 6 6 0°C to +70°C T1/E1 DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 0°C to +70°C T1/E1 DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 -40°C to T1/E1 +85°C DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 0°C to +70°C T1/E1 DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, Page 16 of 21 DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 PT312ET PT-323 PT- 1CT:1 1:1 1:1 RX only RX only RX Through Hole Through Hole Through 6 6 6 -40°C to T1/E1 +85°C DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 0°C to +70°C DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 -40°C to T1/E1 T1/E1 DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, Page 17 of 21 323ET only 1:1.15CT SMD601and 05 1CT:2CT 1 Hole Surface Mount +85°C 16 0°C to +70°C DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 T1/E1 DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 1:1.15CT SMD601and 05ET 1CT:2CT 1 Surface Mount 16 -40°C to T1/E1 +85°C DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 1CT:1CT SMD606and 05 1CT:2CT 1 Surface Mount 16 0°C to +70°C T1/E1 DS21352, DS21354 1CT:1CT SMD606and 05ET 1CT:2CT 1 Surface Mount 16 -40°C to T1/E1 +85°C DS21352, DS21354 -40°C to T3/E3 +85°C DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 -40°C to T3/E3 +85°C DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 SM01T304M 1:2CT MGBBT1:2 00019 1 4 Surface Mount Surface Mount 6 32 Page 18 of 21 T1/E1 and T3/E3 Transformer Selection Information If you have further questions on T1/E1 or T3/E3 transformer selection for our devices, please contact the Telecommunication Applications support team. For more information about specific transformers, please consult the manufacturers using the information listed below. Vendor List Address Phone Fax Website Pulse Engineering Inc. 12220 World Trade Drive 858-674-8100 858-674-8262 www.pulseeng.com San Diego, CA 92128 HALO Electronics Inc. 1861 Landings Drive 650-903-3800 650-903-9300 www.haloelectronics.com Mountain View, CA 94043 Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 201-432-0463 201-432-9542 www.belfuse.com Coev Magnetics (Tyco) 3003 9th Avenue SW Watertown, SD 57201 605-886-3326 605-884-3640 www.coev.net Related Parts DS21348 3.3V E1/T1/J1 Line Interface Free Samples   DS21349 3.3V T1/J1 Line Interface Unit Free Samples   DS21352 3.3V DS21352 and 5V DS21552 T1 Single Chip Transceivers   DS21354 3.3V/5V E1 Single Chip Transceivers (SCT)   DS21448 3.3V E1/T1/J1 Quad Line Interface Free Samples   DS21455 Quad T1/E1/J1 Transceivers Free Samples   DS21458 Quad T1/E1/J1 Transceivers Free Samples   DS2148 5V E1/T1/J1 Line Interface   DS2149 5V T1/J1 Line Interface Unit   DS2152 Enhanced T1 Single Chip Transceiver   DS2154 Enhanced E1 Single Chip Transceiver   DS2155 T1/E1/J1 Single-Chip Transceiver Free Samples   DS21552 3.3V DS21352 and 5V DS21552 T1 Single Chip Transceivers   DS21554 3.3V/5V E1 Single Chip Transceivers (SCT) Free Samples   Page 19 of 21 DS2156 T1/E1/J1 Single-Chip Transceiver TDM/UTOPIA II Interface Free Samples   DS2196 T1 Dual Framer LIU   DS21Q348 3.3V E1/T1/J1 Line Interface   DS21Q352 Quad T1/E1 Transceiver (3.3V, 5.0V)   DS21Q354 Quad T1/E1 Transceiver (3.3V, 5.0V)   DS21Q48 5V E1/T1/J1 Line Interface   DS21Q50 Quad E1 Transceiver   DS21Q55 Quad T1/E1/J1 Transceiver   DS21Q552 Quad T1/E1 Transceiver (3.3V, 5.0V)   DS21Q554 Quad T1/E1 Transceiver (3.3V, 5.0V)   DS21Q58 E1 Quad Transceiver   DS21Q59 E1 Quad Transceiver   DS26521 Single T1/E1/J1 Transceiver Free Samples   DS26522 Dual T1/E1/J1 Transceiver Free Samples   DS26524 Quad T1/E1/J1 Transceiver Free Samples   DS26528 Octal T1/E1/J1 Transceiver Free Samples   DS3150 3.3V, DS3/E3/STS-1 Line Interface Unit Free Samples   DS3151 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs   DS3152 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs   DS3153 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs   DS3154 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs Free Samples   DS3181 Single/Dual/Triple/Quad ATM/Packet PHYs with Built-In LIU Free Samples   DS3182 Single/Dual/Triple/Quad ATM/Packet PHYs with Built-In LIU Free Samples   DS3183 Single/Dual/Triple/Quad ATM/Packet PHYs with Built-In LIU   DS3184 Single/Dual/Triple/Quad ATM/Packet PHYs with Built-In LIU Free Samples   More Information For Technical Support: http://www.maximintegrated.com/support Page 20 of 21 For Samples: http://www.maximintegrated.com/samples Other Questions and Comments: http://www.maximintegrated.com/contact Application Note 351: http://www.maximintegrated.com/an351 APPLICATION NOTE 351, AN351, AN 351, APP351, Appnote351, Appnote 351 © 2012 Maxim Integrated Products, Inc. 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