DS26518GN+

The DS26518GN+ from Maxim Integrated Products is an 8-port T1/E1/J1 transceiver in 256 pin CSBGA package. The DS26518 is an 8-port framer and line interface unit (LIU) combination for T1, E1, J1 applications. Each port is independently configurable, supporting both long-haul and short-haul lines. The DS26518 Single-Chip Transceiver (SCT) is software and pinout compatible with the 4-port DS26514. Software-selectable transmit and receive side termination for 100 ohm T1 twisted pair, 110 ohm J1 twisted pair, 120 ohm E1 twisted pair and 75ohm E1 coaxial applications. Typical applications include routers, channel service units (CSUs), data service units (DSUs), muxes, switches, channel banks and T1/E1 test equipment.

• I/O supply voltage range from 3.135V to 3.465V
• Fully internal impedance match, no external resistor
• Hitless protection switching
• Crystal-less jitter attenuators 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
• Receive signal level indication from -2.5dB to -36dB in T1 mode, -2.5dB to -44dB in E1 mode
• Transmit open and short-circuit detection, LIU LOS in accordance with G.775, ETS 300 233, T1.231
• Transmit synchronizer, alarm detection and insertion
• Operating temperature range from -40°C to 85°C