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參數資料
| 型號： | LTC1689IS#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DVR 100MBPS RS485 QUAD 16SOIC |
| 標準包裝： | 2,500 |
| 類型： | 驅動器 |
| 驅動器/接收器數： | 4/0 |
| 規(guī)程： | RS485 |
| 電源電壓： | 3V，5V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-SOIC |
| 包裝： | 帶卷 (TR) |
1
LTC1688/LTC1689
16889fa
100Mbps RS485
Hot Swapable Quad Drivers
s
Ultrahigh Speed:
100Mbps
s
Guaranteed Propagation Delay: 8ns
±4ns
Over Temperature
s
Low Channel-to-Channel Skew: 500ps Typ
s
Hot Swap
TM Capable
s
50Mbps Operation with VDD = 3V
s
Low tPLH/tPHL Skew: 500ps Typ
s
Driver Outputs Maintain High Impedance in
Three-State or with Power Off
s
Short-Circuit Protected: 3mA Typ Output Current
for an Indefinite Short
s
Thermal Shutdown Protected
s
Single 5V or 3V Supply
s
Pin Compatible with LTC486/LTC487
The LTC
1688/LTC1689 are ultrahigh speed, differential
bus/line drivers that can operate at data rates up to
100Mbps. Propagation delay is guaranteed at 8ns
±4ns
over the full operating temperature range. These devices
operate over the full RS485 common mode range (– 7V
to 12V), and also meet RS422 requirements.
The driver outputs are Hot Swap capable, maintaining
backplane data integrity during board insertion and
removal. The drivers feature three-state outputs, maintain-
ing high impedance over the entire common mode range
(– 7V to 12V). Outputs also remain high impedance during
power-up and with the power off. A short-circuit feature
detects bus contention and substantially reduces driver
output current. Thermal shutdown circuitry protects the
parts from excessive power dissipation.
The LTC1688 allows all four drivers to be enabled together,
while the LTC1689 allows two drivers at a time to be
enabled.
The LTC1688/LTC1689 operate from a single 5V or 3V
supply and draw only 9mA of supply current.
s
High Speed RS485 Twisted-Pair Drivers
s
High Speed Backplane Drivers
s
Complementary Clock Drivers
s
STS-1/OC-1 Data Drivers
s
SCSI Drivers
Hot Swap is a trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
20ns Pulse Across 100 Feet
of Category 5 UTP
20ns/DIV
2V/DIV
5V/DIV
1688/89 TA02
DRIVER INPUT
DRIVER OUTPUTS
RECEIVER INPUT
RECEIVER OUTPUT
CABLE DELAY
1688/89 TA01
RECEIVER
1/4 LTC1688
100
100
1/4 LTC1518
100 FT CATEGORY 5 UTP
DRIVER
50Mbps RS485 Data Connection
DESCRIPTIO
U
FEATURES
APPLICATIO S
U
TYPICAL APPLICATIO
U
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