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HI-8586PDM 参数 Datasheet PDF下载

HI-8586PDM图片预览
型号: HI-8586PDM
PDF下载: 下载PDF文件 查看货源
内容描述: ARINC- 429线路驱动器 [ARINC 429 LINE DRIVER]
分类和应用: 驱动器
文件页数/大小: 8 页 / 138 K
品牌: HOLTIC [ HOLT INTEGRATED CIRCUITS ]
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HI-8585, HI-8586  
FUNCTIONAL DESCRIPTION  
Figure 1 is a block diagram of the line driver. The +5V and  
-5V levels are generated internally using on-chip zeners.  
Currents for slope control are set by zener voltages across  
on-chip resistors.  
A unity gain buffer receives the internally generated slopes  
and differentially drives the ARINC line. Current is limited  
by the series output resistors at each pin. There are no  
fuses at the outputs of the HI-8585 as exists on the HI-  
8382.  
The TX0IN and TX1IN inputs receive logic signals from a  
control transmitter chip such as the HI-6010, HI-3282 or  
HI-8282. TXAOUT and TXBOUT hold each side of the  
ARINC bus at Ground until one of the inputs becomes a  
One. If for example TX1IN goes high, a charging path is  
enabled to 5V on an “A” side internal capacitor while the  
“B” side is enabled to -5V. The charging current is se-  
lected by the SLP1.5 pin. If the SLP1.5 pin is high, the  
capacitor is nominally charged from 10% to 90% in 1.5µs.  
If SLP1.5 is low, the rise and fall times are 10µs.  
The HI-8585 has 37.5 ohms in series with each output and  
the HI-8586 has 2 ohms in series with each output. The  
HI-8586 is for applications where external series resis-  
tance is required, typically for lightning protection devices.  
Both the HI-8585 and HI-8586 are built using high-speed  
CMOS technology. Care should be taken to ensure the  
V+ and V- supplies are locally decoupled and that the  
input waveforms are free from negative voltage spikes  
which may upset the chip’s internal slope control circuitry.  
5V  
“A” SIDE  
ONE  
TXAOUT  
CURRENT  
CONTROL  
HI-8585 = 37.5 OHMS  
HI-8586 = 2 OHMS  
NULL  
ZERO  
-5V  
CONTROL  
LOGIC  
TX0IN  
TX1IN  
ESD  
PROTECTION  
AND  
SLP1.5  
VOLTAGE  
TRANSLATION  
5V  
“B” SIDE  
ONE  
NULL  
ZERO  
TXBOUT  
CURRENT  
CONTROL  
HI-8585 = 37.5 OHMS  
HI-8586 = 2 OHMS  
-5V  
CONTROL  
LOGIC  
FIGURE 1 - LINE DRIVER BLOCK DIAGRAM  
5V  
1
VCC  
2
6
7
HARDWIRED  
OR  
DRIVEN FROM LOGIC  
TESTA  
TESTB  
ROUTA  
ROUTB  
RXD1  
RXD0  
8
{
HI-8588  
4
3
RINA  
ARINC  
Channel  
HI-6010  
APPLICATION INFORMATION  
RINB  
Figure 2 shows a possible application  
of the HI-8585/86 interfacing an ARINC  
transmit channel from the HI-6010.  
5
15V  
8 BIT BUS  
1
SLP1.5  
8
V+  
6
7
3
2
TXAOUT  
TXD1  
TXD0  
TX1IN  
TX0IN  
ARINC  
Channel  
HI-8585  
TXBOUT  
GND  
V-  
4
5
-15V  
FIGURE 2 - APPLICATION DIAGRAM  
HOLT INTEGRATED CIRCUITS  
2