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參數(shù)資料
| 型號： | BUS-8553-28L |
| 英文描述： | Low power high speed RS-485/RS-422 transceiver |
| 中文描述： | 通信集成電路 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大小： | 50K |
| 代理商： | BUS-8553-28L |
DESCRIPTION
The BUS-1553 Transceiver is a com-
plete transmitter and receiver which
fully conforming to MIL-STD-1553A
and 1553B. Features of this high reli-
ability transceiver include:
Harris
15530 type Encoder/Decoder direct
interface compatibility, ±15 V or +15
and -12 V power supply requirements,
and an internal (factory pre-set)
threshold level.
The block diagram, FIGURE 1, illus-
trates the BUS-8553 Transceiver. The
receiver section accepts phase-mod-
ulated bipolar data from a MIL-
STD-553 Data Bus and produces TTL
signal data at outputs: RX Data Out
and RX Data Out. These outputs rep-
resent positive and negative excur-
sions of the input bus signals beyond
a preset threshold level. The receiver
can be taken off-line (outputs dis-
abled) by applying a logic “0” to the
RECEIVER STROBE input.
The transmitter section accepts bipo-
lar TTL signal data at its TX Data and
TX Data input lines and produces a
28 V pk-pk differential signal across a
140
load that is coupled through a
transformer to the TX Data and
TX Data outputs. An external TX
INHIBIT, when activated with a logic
“1” will take the transmitter off-line and
ignore the data inputs
APPLICATION
The BUS-8553s small size, low
power dissipation, and direct inter-
face compatibility with Harris 15530
type Encoder/Decoder makes it an
excellent choice for any MIL-STD-
1553A or 1553B transceiver applica-
tion. The BUS-8553 comes in a her-
metic 24-pin DDIP package that
measures 1.4 x 0.8 x 0.2 inches.
MIL-STD-1553 TRANSCEIVER
FEATURES
Meets All MIL-STD-1553A and
1553B Requirements
Very Low Power Dissipation
Improved Receiver Filtering
Enhances System Bit Error Rate
HARRIS 15530 Encoder/Decoder
Direct Interface Compatibility
Screened to MIL-PRF-38534
Power Supplies:
±15 V or
+15 V and -12V
+15 V
-12 V
OR
-15 V
RECEIVER STROBE
BI PHASE
TTL DATA
RX Data
DECODER
COMPARATOR
FILTER
RECEIVER SECTION
LIMITER
TRANSMITTER SECTION
DRIVER
SHAPING
NETWORK
SHAPING
NETWORK
PHASE MODULATED
BIPOLAR DATA
RX Data In
TX Data Out
SHORT OR
LONG STUB
COUPLING
ISOLATION
TRANSFORMER
1553
DATA
BUS
TX Data In
ENCODER
TX INHIBIT
+5 V
BUS-8553-BLOCK DIAGRAM
BUS-8553
1985, 1999 Data Device Corporation
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