DS26518 Datasheet, PDF (1/312 Pages) Maxim Integrated Products – 8-Port T1/E1/J1 Transceiver

Rev: 103008
DS26518
8-Port T1/E1/J1 Transceiver
______________ General Description
The DS26518 is an 8-port framer and line interface
unit (LIU) combination for T1, E1, J1 applications.
Each port is independently configurable, supporting
both long-haul and short-haul lines. The DS26518
Single-Chip Transceiver (SCT) is software and pinout
compatible with the 4-port DS26514. It is nearly
software compatible with the DS26528 and its
derivatives.
___________________ Applications
Routers
Channel Service Units (CSUs)
Data Service Units (DSUs)
Muxes
Switches
Channel Banks
T1/E1 Test Equipment
______________ Functional Diagram
T1/E1/J1
NETWORK
DS26518
T1/J1/E1
Transceiver
x8 ^BACKPLANE
TDM
_____________ Ordering Information
PART
DS26518GN
DS26518GN+
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
256 TE-CSBGA
256 TE-CSBGA
+ Denotes a lead-free/RoHS compliant device.
________________________ Features
Eight Complete T1, E1, or J1 Long-Haul/
Short-Haul Transceivers (LIU Plus Framer)
Independent T1, E1, or J1 Selections for Each
Transceiver
Fully Internal Impedance Match, No External
Resistor
Software-Selectable Transmit- and Receive-
Side Termination for 100Ω T1 Twisted Pair,
110Ω J1 Twisted Pair, 120Ω E1 Twisted Pair,
and 75Ω E1 Coaxial Applications
Hitless Protection Switching
Crystal-Less Jitter Attenuators Can Be
Selected for Transmit or Receive Path; Jitter
Attenuator Meets ETS CTR 12/13, ITU-T
G.736, G.742, G.823, and AT&T Pub 62411
External Master Clock Can Be Multiple of
2.048MHz or 1.544MHz for T1/J1 or E1
Operation; This Clock is Internally Adapted
for T1 or E1 Usage in the Host Mode
Receive-Signal Level Indication from -2.5dB
to -36dB in T1 Mode and -2.5dB to -44dB in E1
Mode in Approximate 2.5dB Increments
Transmit Open- and Short-Circuit Detection
LIU LOS in Accordance with G.775, ETS 300
233, and T1.231
Transmit Synchronizer
Flexible Signaling Extraction and Insertion
Using Either the System Interface or
Microprocessor Port
Alarm Detection and Insertion
T1 Framing Formats of D4, SLC-96, and ESF
J1 Support
E1 G.704 and CRC-4 Multiframe
T1-to-E1 Conversion
Features continued in Section 2.
Maxim Integrated Products 1
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, go to: www.maxim-ic.com/errata. For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.