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DS2148/DS21Q48 5V E1/T1/J1 Line Interface www.maxim-ic.com FEATURES § § § § § Complete E1, T1, or J1 line interface unit (LIU) Supports both long- and short-haul trunks Internal software-selectable receive-side termination for 75Ω/100Ω/120W 5V power supply 32-bit or 128-bit crystal-less ji
DS21Q44 Enhanced QUAD E1 FRAMER www.dalsemi.com FEATURES Four E1 (CEPT or PCM-30) /ISDN-PRI framing transceivers All four framers are fully independent; transmit and receive sections of each framer are fully independent Frames to FAS, CAS, CCS, and CRC4 formats Each of the four framers contain dual
DS21Q43A Quad E1 Framer www.dalsemi.com FEATURES § § § § § Four E1 (CEPT or PCM-30) /ISDN-PRI framing transceivers All four framers are fully independent; transmit and receive sections of each framer are fully independent Frames to FAS, CAS, CCS, and CRC4 formats 8-bit parallel control port th
DS21Q42 Enhanced QUAD T1 FRAMER www.dalsemi.com FEATURES Four T1 DS1/ISDN–PRI/J1 framing transceivers All four framers are fully independent Each of the four framers contain dual two– frame elastic store slip buffers that can connect to asynchronous backplanes up to 8.192 MHz 8–bit parallel c
DS21Q42 Enhanced QUAD T1 FRAMER www.dalsemi.com FEATURES Four T1 DS1/ISDN–PRI/J1 framing transceivers All four framers are fully independent Each of the four framers contain dual two– frame elastic store slip buffers that can connect to asynchronous backplanes up to 8.192 MHz 8–bit parallel c
DS21Q41B Quad T1 Framer www.dalsemi.com FEATURES § § § § § Four T1 DS1/ISDN-PRI framing transceivers All four framers are fully independent Frames to D4, ESF, and SLC-96 formats 8-bit parallel control port that can be connected to either multiplexed or nonmultiplexed buses Each of the four fra
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