数据手册：MAX3877, MAX3878 .pdf [英文Rev.0(PDF,556kB)]
{状况：生产中。详细情况请参考订购信息。}
The MAX3877/MAX3878 are compact, low-power clock recovery and data retiming ICs for 2.488Gbps SONET/ SDH applications. The fully integrated phase-locked loop (PLL) recovers a synchronous clock signal from the serial NRZ data input, which is retimed by the recovered clock. An additional 2.488Gbps serial input is available for system loopback diagnostic testing, or this input can be connected to a 155MHz reference clock to maintain a valid clock output in the absence of data transitions. The MAX3877/MAX3878 provide vertical threshold and phase-adjust control to optimize system BER in DWDM applications.
These devices provide both loss-of-lock (active-low LOL) and loss-of-signal (LOS) monitors. Differential CML outputs are provided for both clock and data signals on the MAX3877, and differential PECL outputs are provided for clock and data signals on the MAX3878.
The MAX3877/MAX3878 are designed for both section-regenerator and terminal-receiver applications in OC-48/STM-16 transmission systems. Their jitter performance exceeds all of the SONET/SDH specifications. These devices operate from a single +3.0V to +3.6V supply over a -40°C to +85°C temperature range. Typical power consumption is only 540mW with a +3.3V supply (MAX3878). They are available in a 32-pin TQFP-EP package with an exposed pad, as well as in die form.
产品关键特性
- Exceeds ANSI, ITU, and Bellcore SONET/SDH Specifications
- Adjustable Input Threshold (±180mV)
- 10mVp-p to 1.2Vp-p Differential Input Range
- 540mW Power Dissipation (at +3.3V)
- Fully Integrated Clock Recovery and Data Retiming
- Optional Holdover Capability (Using External Reference Clock)
- 0.003UIRMS Clock Jitter Generation
- Tolerates >2000 Consecutive Identical Digits
- Additional 2.488Gbps Input for Diagnostic Loopback Testing
- Differential PECL or CML Data and Clock Outputs
- Loss-of-Signal Indicator
- Loss-of-Lock Indicator
| 应用与使用范围
|
典型工作电路
芯片订购型号
| 订购型号 | 产品状态 | 封装形式 | 工作温度 | RoHS/无铅 |
| MAX3877E/D | 停止供货 | DICE；封装信息 | | 参考数据资料 |
| MAX3877EHJ | 生产中 | TQFP-EP；32引脚；51.8mm²封装信息 | -40°C至+85°C | 参考数据资料 |
| MAX3877EHJ-T | 生产中 | TQFP；32引脚封装信息 | -40°C至+85°C | 参考数据资料 |
| MAX3878E/D | 生产中 | DICESALES；NA引脚；DICE；封装信息 | | 参考数据资料 |
| MAX3878EHJ | 生产中 | TQFP-EP；32引脚；51.8mm²封装信息 | -40°C至+85°C | 参考数据资料 |
| MAX3878EHJ-T | 生产中 | TQFP；32引脚封装信息 | -40°C至+85°C | 参考数据资料 |
评估板与开发套件
相关芯片型号
