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參數(shù)資料
| 型號： | MC145572 |
| 廠商： | Motorola, Inc. |
| 英文描述： | ISDN U-Interface Transceiver(ISDN U接口收發(fā)器) |
| 中文描述： | 綜合業(yè)務數(shù)字網(wǎng)U型接口收發(fā)器（綜合業(yè)務數(shù)字網(wǎng)ü接口收發(fā)器） |
| 文件頁數(shù)： | 242/264頁 |
| 文件大?。?/td> | 2832K |
| 代理商： | MC145572 |
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MC145572
I–2
MOTOROLA
CIDCW
— Calling Identity Delivery on Call Waiting; a subscriber feature which allows for the display of the time, date, number,
and possible other information about the caller to the called party, while the called party is off–hook.
CLASS
— Custom Local Area Signaling Service; a set of services, enhancements, provided to TELCO customers which may
include CND, CNAM, Message Waiting, and other features.
CLID
— Calling Line IDentification; a subscriber feature which allows for the display of the time, date, number, and possible
other information about the caller to the called party.
CNAM
— Calling Name Delivery; a subscriber feature which allows for the display of the time, date, number, and name of the
caller to the called party.
CND
— Calling Number Delivery; a subscriber feature which allows for the display of the time, date, number, and possible other
information about the caller to the called party.
CODEC
— COder–DECoder; the A/D and D/A function on a subscriber line card in a telephone exchange.
COFIDEC
— COder–Filter–DECoder; the combination of a codec, the associated filtering, and voltage references required to
code and decode voice in a subscriber line card.
Common Mode Rejection
— The ability of a device having a balanced input to reject a voltage applied simultaneously to both
differential–input terminals.
Companding
— The process in which dynamic range compression of a signal is followed by expansion in accordance with a
given transfer characteristic (companding law) which is usually logarithmic.
Compander
— A combination of a compressor at one point in a communication path for reducing the amplitude range of signals,
followed by an expander at another point for restoring the original amplitude range, usually to improve the signal–to–noise ratio.
Conference Call
— A call between three or more stations, in which each station can carry on a conversation simultaneously.
CPE
— Customer Premise Equipment; this could be a POTS phone, answering machine, fax machine, or any number of other
devices connected to the PSTN.
Crosspoint
— The operating contacts or other low–impedance–path connection over which conversations can be routed.
Crosstalk
— The undesired transfer of energy from one signal path to another.
CSN
— Circuit Switched Network.
CTS
— Clear to send; a control signal between a modem and a controller used to initiate data transmission over a communica-
tion line.
CVSD
— Continuous Variable Slope Delta (modulation); a simple technique to converting an analog signal (like voice) into a
serial bit stream.
D3
— D3 channel bank; a specific generation of an AT&T 24–channel PCM terminal that multiplexes 24 voice channels into a
1.544 MHz digital bit stream. The specifications associated with D3 channel banks are the basis for all PCM device specifi-
cations.
D/A
(digital–to–analog) converter (DAC) — A converter that represents a limited number of different digital input codes by a
corresponding number of discrete analog output values.
Data Compression
— A technique that provides for the transmission of fewer data bits than originally required without infor-
mation loss. The receiving location expands the received data bits into the original bit sequence.
dB
(decibel) — A power or voltage measurement unit, referred to another power or voltage. It is generally computed as:
10 x log (P1/P2) for power measurements, and
20 x log (V1/V2) for voltage measurements.
dBm
— An indication of signal power. 1.0 mW across 600
, or 0.775 volts rms, is defined as 0 dBm. Any other voltage level is
converted to dBm by:
dBm = 20 x log (Vrms/0.775), or
dBm = [20 x log (Vrms)] + 2.22.
dBmO
— Signal power measured at a point in a standard test tone level at the same point.
i.e., dBmO = dBm = dBr
where dBr is the relative transmission level, or level relative to the point in the system defined as the zero transmission level
point.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MC145572AAC | 功能描述:IC TRANSCEIVER ISDN 44-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:1,000 系列:- 類型:收發(fā)器 驅動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:16-SOIC 包裝:帶卷 (TR) |
| MC145572ACR2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Freescale Semiconductor 功能描述: |
| MC145572AEI | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Freescale Semiconductor 功能描述: |
| MC145572AFN | 功能描述:IC TRANSCEIVER ISDN 44-PLCC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:1,000 系列:- 類型:收發(fā)器 驅動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:16-SOIC 包裝:帶卷 (TR) |
| MC145572APB | 功能描述:IC ISDN INTERFACE TXCVER 44-LQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:1,000 系列:- 類型:收發(fā)器 驅動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:16-SOIC 包裝:帶卷 (TR) |
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