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參數(shù)資料
| 型號： | XR-T56L85N |
| 廠商： | EXAR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | Low Power PCM Line Interface |
| 中文描述： | DATACOM, PCM TRANSCEIVER, CDIP18 |
| 封裝： | 0.300 INCH, CERAMIC, DIP-18 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 105K |
| 代理商： | XR-T56L85N |
XR-T56L85
Low Power
PCM Line Interface
...the analog plus company
TM
Rev. 2.01
1992
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 (510) 668-7000 FAX (510) 668-7017
1
June 1997-3
FEATURES10
Low Power (Typical 14mA)
Single +5V Supply
Up to 2.048 Mbps Operation in Both TX and RX
Directions
Receiver Input can be:
– Balanced Transformer Coupled
– Capacitively (Twisted Pair)
– Single Coaxial Capacitive Coupling
APPLICATIONS
T1 and CEPT Interfaces
CPI
DMI
GENERAL DESCRIPTION
The XR-T56L85 is a PCM line interface chip. It consists of
both transmit and receive circuitry in a DIL 18 pin
package. The maximum bit rate the chip can handle is
2.048 Mbps and the signal level to the received can be
attenuated by 10dB of cable loss at half the bit rate. Total
current consumption is between 12-16mA at +5V.
ORDERING INFORMATION
Part No.
XR-T56L85N
Package
Operating
Temperature Range
-40
°
C to +85
°
C
-40
°
C to +85
°
C
18 Lead 300 Mil CDIP
XR-T56L85D
18 Lead 300 Mil JEDEC SOIC
BLOCK DIAGRAM
5
14
12
16
17
18
9
3
2
11
8
4
10
6
15
13
1
PDC
Positive
Threshold
Comparator
+
–
Negative
Threshold
Comparator
–
Peak
Detector
TTL Buffer
TTL Buffer
TTL Buffer
TTL Buffer
TTL Buffer
Bias
Bias
RPOS
RCLK
TE
RNEG
TANK BIAS
BIAS
TXDATA+
TXDATA-
RXDATA+
RXDATA-
RXV
CC
RXGND
TXV
CC
TPOS
TCLK
TNEG
TXGND
Figure 1. Block Diagram
+
7
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| XR-T5760 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM Repeater |
| XR-T5791ID | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CEPT/T1 Interface |
| XR-T5791IP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CEPT/T1 Interface |
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