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参数资料
| 型号： | DS2291 |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | Telecom IC:Other |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, SMA30 |
| 文件页数： | 4/10页 |
| 文件大小： | 144K |
| 代理商： | DS2291 |
DS2291
022798 3/10
PIN DESCRIPTION Table 1
PIN
SYMBOL
I/O
DESCRIPTION
1,2
VDD
-
Positive Supply. 5.0 volts.
3
RCLK
O
Receive Clock. Recovered 1.544 MHz clock.
4
5
RPOS
RNEG
O
Receive Bipolar Data. Recovered bipolar data; updated on the
rising edge of RCLK. Bipolar violations are not corrected.
6
LCLK
I
Loopback Clock. Clock for loopback data. Internally pulled low
by 100K ohm.
7
8
LPOS
LNEG
I
Loopback Bipolar Data. Samples on the falling edge of LCLK
if LB is tied high. Internally pulled low by 100K ohm.
9
LB
I
Loopback Enable. Tie high to loopback data from the LPOS
and LNEG inputs to RPOS and RNEG; tie low or leave open to
obtain recovered data out of the ALBO circuitry at RPOS and
RNEG. Internally pulled low by 100K ohm.
14
RCL
O
Receive Carrier Loss. Transitions high when 192 consecutive
zeros have been received at RX+ and RX-; reset on the next
ones occurrence.
15
BPV
O
Receive Bipolar Violation. Transitions high for a full bit period
when a bipolar violation appears at RX+ and RX-. B8ZS code
words are not reported if B8ZS is tied high.
16
LOCK
O
Lock Indication. High state indicates that the recovery circuit is
phase-and frequency-locked to the signal at RX+ and RX-.
17
BL
O
Buffer Limit. Transitions high when the incoming jitter at RX+
and RX- is greater than 120Ulpp.
19
DJA
I
Disable Jitter Attenuation. Tie high to disable the jitter attenu-
ation circuitry; tie low to enable the jitter attenuation circuitry.
Internally pulled low by 100K ohm.
20
B8ZS
I
B8ZS Enable. If tied high, incoming B8ZS code words are de-
coded and replaced with eight zeros. If tied low, B8ZS code
words are not decoded. Internally pulled low by 100K ohm.
21
RST
I
Reset. Active low; a high-low-high transition will recenter the
dejitter buffer. Internally pulled high by 100K ohm.
22, 23
GND
-
Ground. 0.0 volts.
29
30
RX+
RX-
I
O
Receive Analog Input. Connects to T1 line through a 2:1 trans-
former. See Figure 4.
NOTE:
Do not connect any signal to pins 10, 11, 12, 13, 18, 24, 25, 26, 27, or 28.
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相关代理商/技术参数 |
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| DS2291/87-22291-000 | 功能描述:网络控制器与处理器 IC T1 Long Loop Stik RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS229E | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| DS229E/T&R | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| DS229E+ | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| DS229E+T&R | 制造商:Maxim Integrated Products 功能描述:IC TXRX TRI 5V RS-232 20-TSSOP |
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