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參數(shù)資料
| 型號： | SY69952ZC |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX CLOCK RECOVERY 28-SOIC |
| 標準包裝： | 27 |
| 類型： | 時鐘和數(shù)據(jù)恢復（CDR），多路復用器 |
| PLL： | 是 |
| 主要目的： | 以太網(wǎng)，SONET/SDH，ATM 應用 |
| 輸入： | PECL |
| 輸出： | PECL |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 1:3 |
| 差分 - 輸入:輸出： | 是/是 |
| 頻率 - 最大： | 155.52Mbps |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 工作溫度： | 0°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 28-SOIC |
| 包裝： | 管件 |
SY69952
3
Micrel, Inc.
M9999-062805
hbwhelp@micrel.com or (408) 955-1690
RSER± – Differential PECL Output
Recovered Serial Data. These Positive ECL 100K outputs
(+5V referenced) represent the recovered data from the
input data stream (RIN±). This recovered data is aligned
with the recovered clock (RCLK±) with a sampling window
compatible with most data processing devices.
RCLK± – Differential PECL Output
Recovered Clock. These Positive ECL 100K outputs (+5V
referenced) represent the recovered clock from the input
data stream (RIN±). This recovered clock is used to sample
the recovered data (RSER±) and has timing compatible
with most data processing devices.
LFI – TTL Output
Link Fault Indicator. This input indicates the status of the
input data stream (RIN±). It is controlled by three functions;
the Carrier Detect (CD) input, the internal Transition Detector,
and the Out of Lock (OOL) detector. The Transition Detector
determines if RIN± contains enough transitions to be
accurately recovered by the Receive PLL. The Out of Lock
detector determines if RIN± is within the frequency range of
the Receive PLL. When CD is HIGH and RIN± has sufficient
transitions and is within the frequency range of the Receive
PLL, the LFI input will be high. If CD is at an ECL LOW or
RIN± does not contain sufficient transitions or RIN± is outside
the frequency range of the Receive PLL then the LFI output
will be LOW. If CD is at a TTL LOW then the LFI output will
only transition LOW when the frequency of RIN± is outside
the range of the Receive PLL.
TOUT± – Differential PECL Output
Transmit Output. These Positive ECL 100K outputs (+5V
referenced) represent the buffered version of the Transmit
data stream (TSER±). This Transmit path is used to take
weak input signals and rebuffer them to drive low impedance
copper media.
TCLK± – Differential PECL Output
Transmit Clock. These Positive ECL 100K outputs (+5V
referenced) provide the bit rate frequency source for external
Transmit data processing devices. This output is synthesized
by the Transmit PLL and is derived by multiplying the
REFCLK frequency by eight.
LOOP – TTL Input
Loop Back Select. This input is used to select the input
data stream source that the Receive PLL used for clock
and data recovery. When the LOOP input is HIGH, the
Receive input data stream (RIN±) is used for clock and
data recovery. When LOOP is LOW, the Transmit input
data stream (TSER±) is used by the Receive PLL for clock
and data recovery.
INPUTS
RIN± – Differential PECL Input
Receive Input. These built-in line receiver inputs are
connected to the differential Receive serial input data stream.
An internal Receive PLL recovers the embedded clock
(RCLK±) and data (RSER±) information. The incoming data
rate can be within one of two frequency ranges depending
on the state of the MODE pin.
CD – PECL/TTL Input
Carrier Detect. This input controls the recovery function
of the Receive PLL and can be driven by the carrier detect
output from optical modules or from external transition
detection circuitry. When this input is at an ECL HIGH, the
input data stream (RIN±) is recovered normally by the
Receive PLL. When this input is at an ECL LOW, the
Receive PLL no longer aligns to RIN±, but instead aligns
with the REFCLKx8 frequency. Also, the Link Fault Indicator
(LFI) will transition LOW, and the recovered data outputs
(RSER) will remain LOW regardless of the signal level on
the Receive data stream inputs (RIN). When the CD input
is at a TTL LOW (-0.8V), the internal transition detection
circuitry is disabled.
TSER± – Differential PECL Input
Transmit Serial Data. These built-in line receiver inputs
are connected to the differential Transmit serial input data
stream. These inputs can receive very low amplitude signals
and are compatible with all PECL signal levels.
REFCLK± – Differential PECL/TTL Input
Reference Clock. This input is the clock frequency
reference for the clock and data recovery Receive PLL.
REFCLK is multiplied internally by eight and sets the
approximate center frequency for the internal Receive PLL
to track the incoming bit stream. This input is also multiplied
by eight by the frequency multiplier Transmit PLL to produce
the bit rate Transmit Clock (TCLK±). REFCLK can be
connected to either a differential PECL or single-ended TTL
frequency source. When either REFCLK+ or REFCLK- is at
a TTL LOW, the opposite REFCLK signal becomes a TTL
level input.
OUTPUTS
ROUT± – Differential PECL Output
Receive Output. These Positive ECL 100K outputs (+5V
referenced) represent the buffered version of the input data
stream (RIN±). This output pair can be used for Receiver
input data equalization in copper based systems, reducing
the system impact of data dependent jitter. All PECL outputs
can be powered down by connecting both outputs to VCC
or leaving them both unconnected.
PIN DESCRIPTIONS
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SY69952ZC TR | 功能描述:IC TXRX CLOCK RECOVERY 28-SOIC RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標準包裝:1,500 系列:- 類型:時鐘緩沖器/驅(qū)動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| SY69952ZH | 功能描述:計時器和支持產(chǎn)品 OC-3/STS-3 Clock Recovering Transceiver (Green) RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| SY69952ZH TR | 功能描述:計時器和支持產(chǎn)品 OC-3/STS-3 Clock Recovering Transceiver (Green) RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| SY6BA9A | 制造商:APEM 功能描述:BA9S 6VAC/DC YELLOW LED |
| SY-6-K | 功能描述:低信號繼電器 - PCB SIGNAL RoHS:否 制造商:NEC 觸點形式:2 Form C (DPDT-BM) 觸點電流額定值: 線圈電壓:5 V 最大開關電流:1 A 線圈電流:1 A 線圈類型:Non-Latching 功耗:140 mW 端接類型:SMT 絕緣: 介入損耗: |
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