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參數(shù)資料
| 型號： | LTC485MJ8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Low Power RS485 Interface Transceiver |
| 中文描述： | LINE TRANSCEIVER, PDIP8 |
| 封裝： | 0.300 INCH, HERMETIC, CERAMIC, DIP-8 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 327K |
| 代理商： | LTC485MJ8 |
8
LTC485
APPLICATIU
The LTC485 output stage will maintain a high impedance
state until the breakdown of the N-channel or P-channel is
reached when going positive or negative respectively. The
output will be clamped to either V
CC
or ground by a Zener
voltage plus a Schottky diode drop, but this voltage is way
beyond the RS485 operating range. This clamp protects
the MOS gates from ESD voltages well over 2000V.
Because the ESD injected current in the N-well or substrate
consists of majority carriers, latchup is prevented by
careful layout techniques.
U
W
U
Propagation Delay
Many digital encoding schemes are dependent upon the
difference in the propagation delay times of the driver and
the receiver. Using the test circuit of Figure 13, Figures 11
and 12 show the typical LTC485 receiver propagation
delay.
The receiver delay times are:
t
PLH
– t
PHL
= 9ns Typ, V
CC
= 5V
The driver skew times are:
Skew = 5ns Typ, V
CC
= 5V
10ns Max, V
CC
= 5V, T
A
= –40
°
C to 85
°
C
Figure 11. Receiver t
PHL
Figure 12. Receiver t
PLH
D
R
RECEIVER
OUT
R
100
100pF
100pF
TTL IN
t
r
, t
f
< 6ns
BR
LTC485 F13
Figure 13. Receiver Propagation Delay Test Circuit
LTC485 F11
RO
B
A
DRIVER
OUTPUTS
RECEIVER
OUTPUT
A
B
RO
RECEIVER
OUTPUT
DRIVER
OUTPUTS
LTC485 F12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC486CSW | Quad Low Power RS485 Driver |
| LTC486ISW | Quad Low Power RS485 Driver |
| LTC487CSW | Quad Low Power RS485 Driver |
| LTC487ISW | Quad Low Power RS485 Driver |
| LTC489IS | Quad RS485 Line Receiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC486CN | 功能描述:IC DVR RS485 LOW PWR QUAD 16-DIP 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(yīng)商設(shè)備封裝:28-SOIC 包裝:管件 |
| LTC486CN#PBF | 功能描述:IC DVR RS485 LOW PWR QUAD 16-DIP 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(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:296-19849-2 |
| LTC486CNPBF | 制造商:Linear Technology 功能描述:LTC486CNPBF |
| LTC486CSW | 功能描述:IC DVR RS485 LOW PWR QUAD 16SOIC 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(yīng)商設(shè)備封裝:28-SOIC 包裝:管件 |
| LTC486CSW#PBF | 功能描述:IC DVR RS485 LOW PWR QUAD 16SOIC 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(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:296-19849-2 |
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