- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385500 > LT1346 (Linear Technology Corporation) OCTAL BUFFER/BUS DRIVERS 20-PDIP 0 to 70 PDF資料下載
參數(shù)資料
| 型號： | LT1346 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | OCTAL BUFFER/BUS DRIVERS 20-PDIP 0 to 70 |
| 中文描述： | 10Mbps的土木工程署署長/ DTE的.35收發(fā)器 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 273K |
| 代理商： | LT1346 |
8
LTC1346A
APPLICATIO
S I
N
FOR
ATIO
U
W
U
Theory of Operation
The transmitter outputs consist of complementary
switched-current sources as shown in Figure 7.
With a logic zero at the transmitter input, the inverting
output Z sources 11mA and the noninverting output Y
sinks 11mA. The differential transmitter output voltage is
then set by the termination resistors. With two differential
50
resistors at each end of the cable, the voltage is set to
(50
)(11mA) = 0.55V. With a logic 1 at the transmitter
input, output Z sinks 11mA and Y sources 11mA. The
common mode voltage of Y and Z is 0V when both current
sources are matched and there is no ground potential
difference between the cable terminations. The transmitter
current sources have a common mode range of
±
2V, which
allows for a ground difference between cable terminations
of
±
4V.
Each receiver input has a 30k resistance to ground and
requires external termination to meet the V.35 input imped-
ance specification. The receivers have an input hysteresis
of 50mV to improve noise immunity.
Three Select pins, S0, S1 and S2, configure the chip as
described in Function Tables. When the transmitters and
Figure 7. Simplified Transmitter Schematic
11mA
11mA
LTC1346A F07
Y
Z
T
50
125
50
V
CC
V
EE
CHIP
BOUNDARY
receivers are OFF, all outputs are forced into high imped-
ance. The S0 pin can be used as receiver output enable.
In shutdown mode, I
CC
drops to 1
μ
A with all transmitters
and receivers OFF. When the LTC1346A is enabled from
shutdown the transmitters and receivers require 2
μ
s to
stabilize.
Complete V.35 Port
Figure 8 shows the schematic of a complete surface
mounted,
±
5V DTE and DCE V.35 port using only three ICs
and six capacitors per port. The LTC1346A is used to
transmit the clock and data signals and the LT1134A to
transmit the control signals. If test signals 140, 141 and
142 are not used, the transmitter inputs should be tied
to V
CC
.
RS422/RS485 Applications
The receivers on the LTC1346A can be used for RS422
and RS485 applications. Using the test circuit in Figure 9,
the LTC1346A receivers are able to successfully extract
the data stream from the common mode voltage, meeting
RS422 and RS485 requirements as shown in Figures 10
and 11.
相關PDF資料 |
PDF描述 |
|---|---|
| LT1351 | OCTAL BUFFER/BUS DRIVERS 20-PDIP 0 to 70 |
| LT1351CMS8 | OCTAL BUFFER/BUS DRIVERS 20-SO 0 to 70 |
| LT1351CN8 | OCTAL BUFFER/BUS DRIVERS 20-SO 0 to 70 |
| LT1351CS8 | OCTAL BUFFER/BUS DRIVERS 20-SO 0 to 70 |
| LT1355 | Octal Buffers And Line Drivers With 3-State Outputs 20-SOIC 0 to 70 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT1346ACSW | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| LT1346AISW | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| LT135 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:Hall Voltage 240mV GaAs Hall Device |
| LT1351 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:250uA, 3MHz, 200V/us Operational Amplifier |
| LT1351CMS8 | 功能描述:IC OP-AMP HI-SPEED 3MHZ 8-MSOP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:C-Load™ 其它有關文件:Automotive Product Guide 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉換速率:3 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:1pA 電壓 - 輸入偏移:70µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:Digi-Reel® 其它名稱:MAX4475AUT#TG16DKR |
發(fā)布緊急采購，3分鐘左右您將得到回復。