DS26519
16-Port T1/E1/J1 Transceiver
www.maxim-ic.com
GENERAL DESCRIPTION
FEATURES
ꢀ
16 Complete T1, E1, or J1 Long-Haul/
Short-Haul Transceivers (LIU Plus Framer)
The DS26519 is a single-chip 16-port framer and line
interface unit (LIU) combination for T1, E1, and J1
applications. Each port is independently configurable, ꢀ Independent T1, E1, or J1 Selections for Each
supporting both long-haul and short-haul lines. The
DS26519 is nearly software compatible with the
DS26528 and its derivatives.
Transceiver
ꢀ
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
APPLICATIONS
Routers
Channel Service Units (CSUs)
Data Service Units (DSUs)
Muxes
Switches
Channel Banks
ꢀ
ꢀ
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
T1/E1 Test Equipment
ꢀ
ꢀ
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
FUNCTIONAL DIAGRAM
DS26519
T1/E1/J1
NETWORK
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
T1/J1/E1
Transceiver
BACKPLANE
ꢀ
ꢀ
Transmit Open- and Short-Circuit Detection
x16
TDM
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
ORDERING INFORMATION
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
Alarm Detection and Insertion
T1 Framing Formats of D4, SLC-96, and ESF
J1 Support
PART
TEMP RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
484 HSBGA
484 HSBGA
484 HSBGA
484 HSBGA
DS26519G
DS26519G+
DS26519GN
DS26519GN+
E1 G.704 and CRC-4 Multiframe
T1-to-E1 Conversion
+ Denotes lead-free/RoHS compliant device.
Features Continued in Section 2.
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: 040907