Why Exar?

EXAR has highly integrated multi-channel SONET/SDH framer products with on chip high speed multi-channel SERDES functions, a range SONET/SDH CDR and Transceiver products. The higher levels of integration and superior jitter performance has benefited many successful SONET/SDH product deployments.


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SDH/SONET
 

Exar's SONET Transceivers and CDRs have been used in SONET/SDH and backplane applications that require 155Mbps or 622Mpbs rate, because of their excellent Jitter Genration/ Tolerance/ Transfer performances and ease of use. Quad channel CDRs are also available.
Transceivers/CDR

OC-12/OC-3
SONET/SDH
8-Bit TTL
3.3V
PQFP-64
OC-12/OC-3
SONET/SDH
8-Bit TTL
3.3V
PQFP-64
OC-12/OC-3
SONET/SDH
8-Bit TTL
3.3V
QFP-100
OC-12/3 STM-4/1
SONET/SDH
LVDS
3.3V
TSSOP-20
OC-12/3 STM-4/1
SONET/SDH
LVDS
3.3V
TSSOP-20
OC-12/3/1 STM-4/1/0
SONET/SDH
8-Bit TTL
3.3V/1.8V
LQFP-128
Another family of Framer / Mapper products provide flexible mapping of multi-channel T1/E1 or DS3/E3 clients into SONET/SDH networks. The highest density product in this family provides mapping of 28 independent T1s (or 21 E1s) into an STS-1. It also supports the transparent transfer and regeneration of the independent T1/E1 clocks across the SONET/SDH network and meets all the jitter / wanders specs of the T1/E1 client interfaces.
Mappers + Framers

n/a
n/a
n/a
n/a
n/a
Reference Design
E1 1xSTM-0/STM-1
SDH
19.44/6.98MHz Telecom
n/a
3.3V/1.8V
PBGA-388
DS1/E1 1x STS-1/STS-3 1xSTM-0/STM-1
SONET/SDH
19.44/6.98MHz Telecom
n/a
3.3V/1.8V
BGA-568
DS3/E3 STS-1/ STS-3 STM-1
SONET/SDH
n/a
n/a
3.3V
TBGA-504
1xSTS-3 1xSTM-1 3xDS3/E3/STS-1
SONET/SDH ATM, PPP
8-Bit, 77.76MHz
Utopia/POS PHY
3.3V
PBGA-504
1xSTS-12 4xSTS-3
n/a
8-Bit, 77.76MHz
n/a
2.5V
PBGA-516
The Tethys family of products offers the highest density mixed signal devices and contain 16xOC-48/STM16 or 4xOC192/STM64 framers with 768 Pointer Processors plus 32x2.5G high performance analog SERDES with CDR functions that drive SFPs and meet all SONET/SDH jitter performance requirements.
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Multi-Channel/Multi-Rate Framer+Serdes

4xOC192
SONET/SDH
SFI-4.1 SFI-4.2
2.5G TFI
3.3V/1.2V
CBGA-1397
4xOC192 16xOC48/12/3
SONET/SDH
SFI-4.1 SFI-4.2 Serial 2.5G/ 622M/155M
2.5G TFI
3.3V/1.2V
CBGA-1397