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| 型号： | MAX3892ETH+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/11页 |
| 文件大小： | 0K |
| 描述： | IC 4:1 SERIALIZER SONET 44-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 串行器 |
| 数据速率： | 2.7Gbps |
| 输入类型： | LVDS |
| 输出类型： | CML |
| 输入数： | 4 |
| 输出数： | 1 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-WFQFN 裸露焊盘 |
| 供应商设备封装： | 44-TQFN-EP（7x7） |
| 包装： | 带卷 (TR) |
Detailed Description
The MAX3892 converts 4-bit-wide, 622Mbps/667Mbps
data to 2.5Gbps/2.7Gbps serial data (Figure 2). Data is
loaded into the 4:1 MUX through a 4 4-bit FIFO buffer
for wide tolerance to clock skew. Clock and data inputs
are LVDS levels while high-speed serial outputs are
CML. An internal PLL frequency synthesizer generates
a serial clock from a low-speed reference clock.
Low-Voltage Differential-Signal
Inputs and Outputs
The MAX3892 has LVDS inputs and outputs for inter-
facing with high-speed digital circuitry. The LVDS stan-
dard is based on the IEEE 1596.3 LVDS specification.
This technology uses differential low-voltage swings to
achieve fast transition times, minimized power dissipa-
tion, and noise immunity. For proper operation, the par-
allel clock LVDS outputs (PCLKO+, PCLKO-) require
100
Ω differential DC termination between the positive
and negative outputs. Do not terminate these outputs to
ground. The parallel data and parallel clock LVDS
inputs (PDI+, PDI-, PCLKI+, PCLKI-) are internally ter-
minated with 100
Ω differential input resistance, and
therefore do not require external termination.
PECL Inputs
The reference clock (RCLK+, RCLK-) has PECL inputs
for interfacing to a crystal oscillator with AC or DC con-
nections. The RCLK inputs are self-biasing to VCC -
1.3V for AC-coupled inputs. Only a 100
Ω differential
termination resistance must be added when inputs are
AC-coupled.
Current-Mode Logic Outputs
The 2.5Gbps/2.7Gbps data, clock, and system loop-
back outputs (SDO+, SDO-, SCLKO+, SCLKO-,
SLBO+, SLBO-) of the MAX3892 are designed using
current-mode logic (CML). The configuration of the
MAX3892 CML output circuit includes internal 50
Ω
back termination to VCC (Figure 3). These outputs are
intended to drive a 50
Ω transmission line terminated
with a matched load impedance.
FIFO Buffer
Data is latched into the MAX3892 by the parallel input
clock PCLKI. The parallel input clock serves as the
FIFO write clock. The parallel output clock PCLKO acts
as the FIFO read clock that loads the 4:1 MUX. The
FIFO allows the read and write clocks to vary by up to
±1UI. Conditions that result in the read and write clock
accessing the same FIFO address are indicated by
MAX3892
+3.3V, 2.5Gbps/2.7Gbps, SDH/SONET 4:1
Serializer with Clock Synthesis
_______________________________________________________________________________________
7
TSU
TH
TSU
TH
PDI_
622MHz
CLOCK
311MHz
CLOCK
1.608ns
D3
D2
D1
D0
NOTE: SIGNALS SHOWN ARE DIFFERENTIAL. FOR EXAMPLE, PCLK0 = (PCLK0+) - (PCLKO-).
*PDI3 = D3; PDI2 = D2...PDI0 = D0. PDI3 IS THE MSB AND IS TRANSMITTED FIRST.
THIS FIGURE IS NOT INTENDED TO SHOW A SPECIFIC TIMING RELATIONSHIP BETWEEN PARALLEL
INPUT DATA AND SERIAL OUTPUT DATA.
PCLKI+ - PCLKI-
DATA
IN
SDO
SCLKO
tCLK-Q
DATA
OUT
2.5GHz
CLOCK
Figure 1. Timing Diagram
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| MAX389C/D | 功能描述:多路器开关 IC RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX389CJN | 功能描述:多路器开关 IC RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX389CPN | 功能描述:多路器开关 IC RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX389CPN+ | 功能描述:多路器开关 IC 8:2 8Ch Fault Prtcd Analog MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX389CWG | 功能描述:多路器开关 IC RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
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