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PDF BU-63133L8 Data sheet ( Hoja de datos )
| Número de pieza | BU-63133L8 | |
| Descripción | MIL-STD-1553 Data Bus Single 3.3V | |
| Fabricantes | Data Device Corporation | |
| Logotipo |  |
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PRELIMINARY
BU-63133L8
MIL-STD-1553 DATA BUS
3.3 VOLT SINGLE TRANSCEIVER
DESCRIPTION
The BU-63133 transceiver is a complete transmitter and receiver con-
forming fully to MIL-STD-1553A, 1553B, and 1760. The use of two
BU-63133 transceivers provides full dual redundancy. Features
include: +3.3V power supply voltage, Harris interface type, and a ultra
low profile, small footprint, 32-pad Leadless Plastic Chip Carrier pack-
age (LPCC). The LPCC package provides an integral, exposed
heatsink on the package bottom. This package allows 100% duty
cycle operation at 125°C when the heatsink is soldered to an appro-
priately constructed PCB.
The receiver section of the BU-63133 accepts Manchester II data
from a MIL-STD-1553 Data Bus and produces TTL level signals at its
outputs: RX DATA OUT and RX DATA OUT. These outputs represent
positive and negative excursions of the input data signals beyond an
internally fixed threshold level. An external STROBE input enables or
disables the receiver's outputs.
The transmitter section accepts bipolar TTL signal data at its TX
DATA IN and TX DATA IN inputs and produces Manchester II data at
the TX DATA OUT and TX DATA OUT outputs.
When used with the recommended transformers, the transmitter typ-
ically produces 21 Vp-p for transformer coupled outputs and 7 Vp-p at
the bus. An external input, TX INHIBIT, takes priority over the trans-
mitter inputs and disables the transmitter when activated with a logic
www"1."D.atTaShheeeutl4trUa.csommall size, +3.3V power supply voltage, and compli-
ance with MIL-STD-1553A, 1553B, and 1760 simplify engineering
design, making it an excellent choice for interfacing with any MIL-
STD-1553 system.
Data Device Corporation
105 Wilbur Place
Bohemia, New York 11716
631-567-5600 Fax: 631-567-7358
www.ddc-web.com
Make sure the next
Card you purchase
has...
®
FEATURES
• World's smallest 3.3V MIL-STD-1553
Transceiver
• Requires Only 3.3V Power Supply
• -55°C to +125°C Operation
• 32-Pad LPCC
• 0.276" x 0.276" (7 X 7 mm) Body and
Footprint Size
• 0.039" Inch Maximum Height
• Low Power Consumption
• Sleep Mode Allows Further Power
Reduction
• Single Transceiver Allows Full Dual
Redundancy
This Preliminary data sheet provides
detailed functional capabilities for product
currently in prototype production. These
specifications are being provided to allow
for electrical design, layout and operation.
FOR MORE INFORMATION CONTACT:
Technical Support:
1-800-DDC-5757 ext. 7234
All trademarks are the property of their respective owners.
© 2003 Data Device Corporation
1 page  
required for a direct or transformer coupled, MIL-STD-1553 Bus
implementation.
The center tap of the primary winding (the side of the transformer
that connects to the BU-63133) must be directly connected to the
3.3V plane. Additionally, a 10µF low inductance tantalum capac-
itor and 0.01µF ceramic capacitor must be mounted as close as
possible and with the shortest leads to the center tap of the
transformer(s) and ground plane.
Furthermore, when the transmitter is transmitting, large currents
will flow from the 3.3V plane, into the transformer center tap,
through the primaries, into the TX pins and then out through the
transceiver ground pins into the ground plane. The traces in this
path should be sized accordingly and the connections to the
ground plane should be as short as possible. Note that the
heatsink on the bottom of the package is also ground.
In addition, it is recommended that the BU-63133 itself be
bypassed with a 10µF low inductance tantalum capacitor and
0.01µF ceramic capacitor. These capacitors should be located as
close to the Vcc and GND pins as possible.
TRANSFORMERS
In selecting isolation transformers to be used with the BU-63133,
there is a limitation on the maximum amount of leakage induc-
tance. If this limit is exceeded, the transmitter rise and fall times
may increase, possibly causing the bus amplitude to fall below
the minimum level required by MIL-STD-1553. In addition, an
excessive leakage imbalance may result in a transformer dynam-
ic offset that exceeds 1553 specifications.
The maximum allowable leakage inductance is a function of the
coupling method and is measured as follows:
The side of the transformer that connects to the BU-63133 is
defined as the "primary" winding. If one side of the primary is
shorted to the primary center-tap, the inductance should be
measured across the "secondary" (stub side) winding. This
inductance must be less than 5.0 µH (Transformer Coupled) and
10.0 µH (Direct Coupled). Similarly, if the other side of the pri-
mary is shorted to the primary center-tap, the inductance meas-
ured across the "secondary" (stub side) winding must also be
less than 5.0 µH (Transformer Coupled) and 10.0 µH (Direct
Coupled).
The difference between these two measurements is the "differ-
ential" leakage inductance. This value must be less than 1.0 µH
(Transformer Coupled) and 2.0 µH (Direct Coupled).
Beta Transformer Technology Corporation (BTTC), a subsidiary
of DDC, manufactures transformers in a variety of mechanical
configurations with the required turns ratios of 1:3.75 for direct
coupled, and 1:2.7 for transformer coupled configurations.
TABLE 2 provides a listing of the transformers available.
For further information, contact BTTC at 631-244-7393 or at
www.bttc-beta.com.
TABLE 2. BTTC TRANSFORMERS FOR USE WITH BU-63133
TRANSFORMER
CONFIGURATION
Single epoxy, through-hole
Single epoxy, through-hole
Single epoxy, surface mount
wwwS.inDgaletaeSphoexey,t4sUur.fcaocme mount
Single epoxy, surface mount
Single epoxy, surface mount
COUPLING
TYPE
direct
transformer
transformer
direct
transformer
direct
DIMENSIONS
(INCHES)
0.625 X 0.630,
0.300 max height
0.625 X 0.630,
0.300 max height
0.625 X 0.625,
0.130 max height
0.625 X 0.625,
0.130 max height
0.625 X 0.630,
0.300 max height
0.625 X 0.630,
0.300 max height
TEMPERATURE RATING
(°C MAX)
+130
+130
+85
+85
+130
+130
BTTC PART NUMBER
NEW / OLD
LVB-4103 / B-3383
LVB-4203 / B-3372
LVB-4213 / B-3389
LVB-4113 / B-3390
LVB-4223 / B-3391
LVB-4123 / B-3392
Note: Surface mount body package size does not include leads.
Data Device Corporation
www.ddc-web.com
5
BU-63133
Pre 3-06/03-0
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet BU-63133L8.PDF ] | |
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