Mfr Part #:

DS26521LN+

Mfr Name: Analog Devices / Maxim Integrated

The Analog Devices DS26521LN+ is a single-channel transceiver for T1, E1, and J1 applications, combining a framer and LIU. It supports both long-haul and short-haul lines.

✓ Total Stock: 1,600 pcs

DS26521LN+ Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Xingangxin ✓ Non-Authorised Inventory information	1,600 pcs On Request	1600 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

DS26521LN+ Description

Short technical summary and product information.

The DS26521LN+ from Analog Devices / Maxim Integrated is a versatile single-channel transceiver designed for T1, E1, and J1 telecommunication applications. This integrated circuit combines a framer and a Line Interface Unit (LIU), offering independent configurability for each channel and supporting both long-haul and short-haul line types.

Key features include software-selectable transmit and receive-side termination for various twisted pair and coaxial applications, a crystal-less jitter attenuator that meets multiple industry standards, and flexible clocking options. The device provides receive-signal level indication, transmit open/short-circuit detection, and LIU Loss of Signal (LOS) detection in accordance with relevant standards. It supports T1 framing formats (D4, SLC-96, ESF), J1, and E1 G.704 with CRC-4 multiframe.

Control can be managed via an 8-bit parallel port interface or a Serial Peripheral Interface (SPI). The DS26521LN+ operates within a temperature range of -40°C to 85°C and is housed in a 64-LQFP package suitable for surface mounting.

This transceiver is ideal for applications such as routers, Channel Service Units (CSUs), Data Service Units (DSUs), multiplexers, switches, channel banks, and T1/E1 test equipment.

DS26521LN+ Quick Information

Product Type: Telecom Transceiver

Canonical Name: DS26521LN+ Single-Channel T1/E1/J1 Framer and Line Interface Unit (LIU) Transceiver

Subcategory: Framer/LIU

DS26521LN+ Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

DS26521LN+ Features

Single-channel T1/E1/J1 transceiver with LIU and framer.
Supports long-haul and short-haul line applications.
Software-selectable transmit/receive termination options.
Crystal-less jitter attenuator meets industry standards.
Controlled via 8-bit parallel or SPI interface.

DS26521LN+ Applications

Ideal for routers and multiplexers.
Used in Channel Service Units (CSUs).
Suitable for Data Service Units (DSUs).
Applicable for channel banks.
Designed for T1/E1 test equipment.

DS26521LN+ FAQs

4 frequently asked questions generated from this part’s specifications.

What is the operating temperature range for the DS26521LN+?

The operating temperature range for the DS26521LN+ is -40°C to 85°C.

What package type is the DS26521LN+ available in?

The DS26521LN+ is available in a 64-LQFP package.

What are the supported line types for the DS26521LN+?

The DS26521LN+ supports T1, E1, and J1 line types, for both long-haul and short-haul applications.

What control interfaces does the DS26521LN+ offer?

The DS26521LN+ can be controlled by an 8-bit parallel port interface or a Serial Peripheral Interface (SPI).

Category	Telecom
Manufacturer Name	Analog Devices / Maxim Integrated
Current	104mA
Features	Complete T1, E1, or J1 Long-Haul/Short-Haul Transceiver (LIU plus Framer); Internal 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; Crystal-Less Jitter Attenuator 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; Controlled by 8-Bit Parallel Port Interface or Serial Peripheral Interface (SPI)
Function	Transceiver
Interface	LIU
Mounting Type	Surface Mount
Number of Circuits	1
Operating Temperature	-40°C ~ 85°C
Supplier Device Package	64-LQFP (10x10)
Voltage	3.135V ~ 3.465V