The BBT3821 Octal 2.488Gbps to 3.187Gbps/ Lane Retimer supports 8 lanes of clock & data recovery and retiming with ultra low power consumption of only 195mW per lane.
The BBT3821 is a 10‑Gigabit Ethernet re‑timer supporting LX4 and XAUI interfaces. It offers 8 lanes of clock and data recovery with rate‑matching, 16‑level CML output, and low‑power operation for high‑speed optical modules.
Key features include a 192‑pin 1.0 mm pitch EBGA package, 1.5 V core supply with 2.5 V tolerant I/O, and extensive loopback and test modes. The device complies with IEEE 802.3ae/ak jitter requirements and provides built‑in self‑test, PRBS generators, and JTAG/AC‑JTAG boundary‑scan capabilities.
| Data Rate Range | 2.488 Gbps – 3.1875 Gbps (high) and 1.244 Gbps – 1.59325 Gbps (low) |
|---|---|
| Core Supply Voltage | 1.5 V |
| I/O Voltage Tolerance | 2.5 V tolerant |
| Package Type | 192‑pin 1.0 mm pitch EBGA (17 mm × 17 mm) |
| Number of Lanes | 8 (4 Tx, 4 Rx) |
It supports a high‑speed range of 2.488 Gbps to 3.1875 Gbps and a low‑speed range of 1.244 Gbps to 1.59325 Gbps.
The device provides eight lanes total, with four transmit and four receive lanes.
It is offered in a 192‑pin EBGA package with a 1.0 mm pitch and a 17 mm × 17 mm footprint.
The core supply voltage is 1.5 V and the I/O pins are tolerant up to 2.5 V.