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| Part Number |
Description |
Key Advantages |
| DS26528 |
Octal T1/E1/J1 Transceiver

| |
| DS21455, DS21458 |
Quad T1/E1/J1 Transceivers

| Industry's First 4-Port Transceivers to Switch Among All T1, E1, and J1 Standards without External Component Changes |
| DS26524 |
Quad T1/E1/J1 Transceiver

| Low-Power, Low-Cost SCT Pin and Software Compatible with the Octal DS26528 and Makes Migration to Higher Ports Easy, Available in Lead-Free Packages |
| DS26401 |
Octal T1/E1/J1 Framer

| |
| DS21Q58 |
E1 Quad Transceiver

| |
| DS21448 |
3.3V E1/T1/J1 Quad Line Interface

| 3.3V E1/T1/J1 Quad Line Interface Unit for Short-Haul and Long-Haul Applications |
| DK2000 |
High-Performance Demo Kit Motherboard

| |
| DK101 |
Low-Cost Demo Kit Motherboard

| |
| DS2174 |
EBERT

| |
| DS21Q55, DS21Q55N |
Quad T1/E1/J1 Transceiver

| |
| DS21Q50 |
Quad E1 Transceiver

| E1 Quad Transceiver Contains All the Functions Necessary for Connecting to Four E1 Lines |
| DS2172 |
Bit Error Rate Tester (BERT)

| |
| DS21372 |
3.3V Bit Error Rate Tester (BERT)

| |