Recommended for new projects

- In mass production
- Available from stock in volumes


  • Low power consumption
  • Easy inter-chip connection to telecom ICs
  • Fully digital chip architecture
  • Excellent lead times
  • Competitive price
  • Comprehensive software support


The XHFC-2SU is a single-chip ISDN transceiver for two ISDN S/T or UpN/Up0 Basic Rate Interfaces with integrated HDLC controllers for all kinds of BRI equipment. The XHFC-2SU has two Universal ISDN Ports which can be configurated either in S/T mode or in Up mode, numbered 0 . . 1.

The integrated microprocessor bus interface of the XHFC-2SU can be configured to 8 bit parallel microprocessor interface or serial processor interface (SPI). A PCM128 / PCM64 / PCM30 interface for CODEC or inter-chip connection is also integrated. The deep FIFOs of the XHFC-2SU are realized with an internal SRAM.


Technology Element Details
S/T interfaces 2
UpN/Up0 interfaces 2
Bus interfaces SPI, 8 bit parallel
CODEC or inter-chip connection PCM128 / PCM64 / PCM30
Package LQFP 64