參數(shù)資料
型號： LTC1685
廠商： Linear Technology Corporation
英文描述： 52Mbps, Precision Delay, RS485 Fail-Safe Transceiver
中文描述： 52Mbps的，精密延遲，485失效保護器
文件頁數(shù)： 1/12頁
文件大小： 269K
代理商： LTC1685
1
LTC1685
52Mbps, Precision Delay,
RS485 Fail-Safe Transceiver
DESCRIPTIO
N
U
The LTC
1685 is a high speed, precision delay RS485
transceiver that can operate at data rates as high as 52Mbps.
The device also meets the requirements of RS422.
A unique architecture provides very stable propagation
delays and low skew over a wide common mode and
ambient temperature range.
The driver and receiver feature three-state outputs, with
disabled driver outputs maintaining high impedance over
the entire common mode range. A short circuit feature
detects shorted outputs and substantially reduces driver
output current. A similar feature also protects the receiver
output from short circuits. Thermal shutdown circuitry
protects from excessive power dissipation.
The receiver has a fail-safe feature that guarantees a high
output state when the inputs are shorted or are left floating.
The LTC1685 RS485 transceiver guarantees receiver fail-
safe operation over the entirecommon mode range (–7V
to 12V). Input resistance will remain
≥
22k when the device
is unpowered or disabled.
The LTC1685 operates from a single 5V supply and draws
only 7mA of supply current.
I
Precision Propagation Delay Over Temperature:
Receiver/Driver: 18.5ns
±
3.5ns
I
High Data Rate: 52Mbps
I
Low t
PLH
/t
PHL
Skew:
Receiver/Driver: 500ps Typ
I
–7V to 12V RS485 Input Common Mode Range
I
Guaranteed Fail-Safe
Receiver Operation Over the
Entire Common Mode Range
I
High Receiver Input Resistance:
≥
22k, Even When
Unpowered
I
Short-Circuit Protected
I
Thermal Shutdown Protected
I
Driver Maintains High Impedance in Three-State or
with Power Off
I
Single 5V Supply
I
Pin Compatible with LTC485
I
45dB CMRR at 26MHz
FEATURES
10Mbps Data Pulse
400ft Category 5 UTP
1685 TA02
DRIVER INPUT
RECEIVER
INPUT
RECEIVER
OUTPUT
100ns/DIV
1V/DIV
2V/DIV
5V/DIV
CABLE DELAY
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO
S
U
I
High Speed RS485/RS422 Transceivers
I
Level Translator
I
Backplane Transceiver
I
STS-1/OC-1 Data Transceiver
I
Fast-20, Fast-40 SCSI Transceivers
TYPICAL APPLICATIO
N
U
V
CC1
GND1
R
RO1
RE1
DE1
DI1
D
Rt
Rt
1685 TA01
V
CC2
GND2
R
RO2
RE2
DE2
DI2
D
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參數(shù)描述
LTC1685CS8 功能描述:IC TXRX RS485 PREC DELAY 8-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標準包裝:27 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 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
LTC1685CS8#PBF 功能描述:IC TXRX RS485 PREC DELAY 8-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓模塊:RS-232 & USB Transceiver 標準包裝:2,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):1/1 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-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:296-19849-2
LTC1685CS8#TR 功能描述:IC TXRX RS485 PREC DELAY 8SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標準包裝:27 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 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
LTC1685CS8#TRPBF 功能描述:IC TXRX RS485 PREC DELAY 8-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標準包裝:27 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 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
LTC1685CS830506PBF 制造商:Linear Technology 功能描述:
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