The DS26334 is a 16-channel short/long-haul line interface unit (LIU) that supports E1/T1/J1 from a single 3.3V power supply. A single bill of material can
support E1/T1/J1 that requires no external termination. Redundancy is supported through nonintrusive monitoring, optimal high-impedance modes and configurable 1:1 or 1+1 backup enhancements. An on-chip synthesizer generates the E1/T1/J1 clock rates by a single master clock input of various frequencies. Two clock output references are also offered. The device is offered in a 256-pin TE-CSBGA, the smallest package available for a 16-channel LIU.
Key Features
Applications/Uses
16 E1, T1, or J1 Short/Long-Haul Line Interface Units
Independent E1, T1 or J1 Selections
Fully Internal Impedance Match Requires No External Resistors
Software-Selectable Transmit and Receive-Side Impedance Match
Crystal-Less Jitter Attenuator
Selectable Single-Rail and Dual-Rail Mode and AMI or HDB3/B8ZS Line Encoding and Decoding
Detection and Generation of AIS
Digital/Analog Loss of Signal Detection as per T1.231, G.775 and ETS 300 233
External Master Clock Can Be Multiple of 2.048MHz or 1.544MHz for T1/J1 or E1 Operation; This Clock Will Be Internally Adapted for T1 or E1 Usage
Receiver Signal Level Indicator from -2.5dB to -38dB in T1 Mode and -3dB to -43dB in E1 Mode in 2.5dB Increments
Two Built-In BERT Testers for Diagnostics
8-Bit Parallel Interface Support for Intel or Motorola Mode or a 4-Wire Serial Interface
Transmit Short-Circuit Protection
G.772 Nonintrusive Monitoring
Receive Monitor Mode Handles Combinations of 14dB to 30dB of Resistive Attenuation Along with 12dB to 30dB of Cable Attenuation
Specification Compliance to the Latest T1 and E1 Standards—ANSI T1.102, AT&T Pub 62411, T1.231, T1.403, ITU-T G.703, G.742, G.775, G.823, ETS 300 166, and ETS 300 233
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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