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XR-T7295

更新时间： 2024-09-16 22:41:15

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
20页	227K
描述
DS3/Sonet STS-1 Integrated Line Receiver

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XR-T7295 数据手册

XR-T7295

DS3/Sonet STS-1

Integrated Line Receiver

...the analog plus company^TM

June 1997-3

FEATURES

APPLICATIONS

D Fully Integrated Receive Interface for DS3 and

D Interface to DS-3 Networks

D Digital Cross-Connect Systems

D CSU/DSU Equipment

STS-1 Rate Signals

D Integrated Equalization (Optional) and Timing

Recovery

D PCM Test Equipment

D Loss-of-Signal and Loss-of-Lock Alarms

D Variable Input Sensitivity Control

D 5V Power Supply

D Fiber Optic Terminals

D Pin Compatible with XR-T7295E

D Companion Device to T7296 Transmitter

GENERAL DESCRIPTION

The XR-T7295 DS3/SONET STS-1 integrated line

receiver is a fully integrated receive interface that

terminates a bipolar DS3 (44.736Mbps) or Sonet STS-1

(51.84Mbps) signal transmitted over coaxial cable. (See

Figure 13).

settings, to adapt longer cables. High input sensitivity

allows for significant amounts of flat loss within the

system. Figure 1 shows the block diagram of the device.

The XR-T7295 device is manufactured using linear

CMOS technology. The XR-T7295 is available in either a

20-pin plastic DIP or 20-pin plastic SOJ package for

surface mounting.

The device also provides the functions of receive

equalization (optional), automatic-gain control (AGC),

clock-recovery and data retiming, loss-of-signal and

loss-of-frequency-lock detection. The digital system

interface is dual-rail, with received positive and negative

1s appearing as unipolar digital signals on separate

output leads. The on-chip equalizer is designed for cable

distances of 0 to 450ft. from the cross-connect frame to

the device. The receive input has a variable input

sensitivity control, providing three different sensitivity

Two versions of the chip are available, one is for either

DS3 or STS-1 operation (the XR-T7295, this data sheet),

and the other is for E3 operation (the XR-T7295E, refer to

the XR-T7295E data sheet). Both versions are pin

compatible.

For either DS3 or STS-1, an input reference clock at

44.736MHz or 51.84MHz provides the frequency

reference for the device.

ORDERING INFORMATION

Operating

Temperature Range

Part No.

Package

20 Lead 300 Mil PDIP

20 Lead 300 Mil JEDEC SOJ

XR-T7295IP

XR-T7295IW

-40°C to + 85°C

Rev. 1.05

E1992

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z FAX (510) 668-7017

12 3 4 5 6 7...20

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XR-T7295-1EIP	ETC	获取价格	PCM Receiver
XR-T7295-1EIW	ETC	获取价格	PCM Receiver
XRT7295AE	EXAR	获取价格	E3 (34.368Mbps) Integrated line Receiver
XRT7295AE_03	EXAR	获取价格	E3 (34.368Mbps) Integrated line Receiver
XRT7295AEIP	EXAR	获取价格	PCM Transceiver, 1-Func, E-3, CMOS, PDIP20, 0.300 INCH, PLASTIC, DIP-20
XRT7295AEIW	EXAR	获取价格	E3 (34.368Mbps) Integrated line Receiver
XRT7295AEIWTR-F	EXAR	获取价格	IC E3 LINE RECEIVER 20SOJ
XRT7295AT	EXAR	获取价格	DS3/Sonet STS-1 Integrated Line Receiver
XRT7295AT_10	EXAR	获取价格	DS3 SONET STS1 Integrated Line Receiver
XRT7295ATIW	EXAR	获取价格	DS3/Sonet STS-1 Integrated Line Receiver