Features Complete ISDN PBX 2-Wire Data Transceiver including: • 2 B plus D channel interface for PBX U[Foot][Minute][Prime] Interface • 144 kb/s full-duplex on 1 twisted pair using Burst Mode • Loop range up to 800 meters (#24AWG) • Alternate Mark Inversion coding with transmit filter and scrambler for low emi radiation • Adaptive line equalizer • On-chip timing recovery, no external components • Standard TDM interface for B channels • Separate interface for D channel • 2.048 MHz master clock • Driver for line transformer • 4 loop-back test modes • Single +5V supply • MICROWIRE™ compatible serial control interface • Applications in: PBX Line Cards Terminals Regenerators • Available in 28-pin PLCC Package Description The TP3406 is a complete monolithic transceiver for data transmission on twisted pair subscriber loops. It is built on National's double poly microCMOS process, and requires only a single +5 Volt supply. Alternate Mark Inversion (AMI) line coding, in which binary "1's are alternately transmitted as a positive pulse then a negative pulse, is used to ensure low error rates in the presence of noise with lower emi radiation than other codes such as Bi-phase (Manchester). Full-duplex transmission at 144 kb/s is achieved on a single twisted wire pair using a burst-mode technique (Time Compression Multiplexed). Thus the device operates as an ISDN "U' Interface for short loop applications, typically in a PBX environment, providing transmission for 2 B channels and 1 D channel. On #24 cable, the range is up to 800 meters. System timing is based on a Master/Slave configuration, with the line card end being the Master which controls loop timing and synchronisation. All timing sequences necessary for loop activation and de-activation are generated on-chip. Selection of Master and Slave mode operation is programmed via the Microwire Control Interface. A 2.048 MHz clock, which may be synchronized to the system clock, controls all transmission-related timing functions.

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Datasheets

Title		Size	Date	Other Language
	TP3406 DASL Digital Adapter for Subscriber Loops	234 Kbytes	7-Jan-96

More Application Notes

Title		Size	Date	Other Language
	AN-492: AN-492: Intuitive ISDN - An ISDN Tutorial (115 Kbytes; 04-Nov-1995)	115 Kbytes	25-May-06

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
TP3406N	CS080	0	30535	0	0	2810500	2	797458048
TP3406V	CS080	0	30535	0	0	2810500	2	797458048

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
TP3406J	NONE	NATIONAL SEMICONDUCTOR	16 Nov 2008
TP3406N	NONE	NONE	30 Nov 2009
TP3406V	NONE	NATIONAL SEMICONDUCTOR	16 Nov 2008