BUS-8559
VARIABLE OUTPUT
MIL-STD-1553 TRANSCEIVER
FEATURES
coupled to the data bus with the spec-
ified transformer*, and isolated (on the
data side) with two 55
Ω
fault isolation
resistors, and loaded with two 70
Ω
terminations
(plus
additional
receivers), the data bus signal pro-
duced is a nominal 0 to 7.5 V pk-pk
when measured at the output side of
the 55
Ω
resistors.
When both DATA and DATA, inputs
are held low or high, the transmitter
presents a high impedance to the
line. An external inhibit input is also
provided, which allows the the trans-
mitter output to be removed from the
line.. When a logic “1” is applied to the
TX INHIBIT input, the transmitter is
disabled, and the data inputs are
ignored.
DESCRIPTION
Designed specifically for use in auto-
matic test equipment where a variable
transmitter output level is required,
the DDC Model BUS-8559 transceiv-
er is a complete transmitter and
receiver conforming to MIL standards
1553A and 1553B.
The receiver section accepts phase-
modulated bipolar data at the input
and produces a bi-phase TTL signal
at the output, see FIGURE 1.
Outputs, DATA and DATA, are posi-
tive and negative excursions of the
input beyond an internally fixed
threshold. The positive and negative
thresholds are internally set at the
factory for a nominal 1 V pk-pk signal,
when measured at point “A” in FIG-
URE 2. An external strobe input is
provided which allows the the receiv-
er to be removed from the line. A logic
“0” applied to RECEIVER STROBE
will disable the receiver output.
The BUS-8559 transmitter section
accepts bi-phase TTL data at the
input and produces a nominal 0 to 27
V pk-pk differential output across a
145
Ω
load. When the transmitter is
•
Variable Transmitter Output
•
Transmitter/Receiver in a Single
24-Pin DDIP Hybrid
•
Very Low Power Dissipation
•
Improved Receiver Filtering
Enhances System Bit Error Rate
•
Meets MIL-STD-1553A and 1553B
•
Power Supplies:
±15 V or
+15 V and -12 V
APPLICATION
The BUS-8559 is suitable for any
MIL-STD-1553 application which
requires a transceiver. The BUS-8559
comes in a hermetic, 24-pin DDIP
package which measures 1.4 x 0.8 x 0.2
inches.
-15
+15
+5
VAR VCC
(O to +15 V)
BUS-8559
TRANSCEIVER
RECEIVER
SECTION
COMPARATOR
COMPARATOR
RECEIVER
STROBE
RX DATA
BUS-25679
TRANSFORMER
DATA
LIMITER
FILTER
LIMITER
FILTER
COMPARATOR
RX DATA
DRIVER
TRANSMITTER
SECTION
DRIVER
SHAPING
NETWORK
COMPARATOR
SHAPING
NETWORK
TX DATA
DRIVER
DRIVER
SHAPING
SHAPING
NETWORK
NETWORK
DATA
TX DATA
TX INHIBIT
BUS-8559 BLOCK DIAGRAM
©
1999 Data Device Corporation
SPECIFICATIONS FOR BUS-8559 HYBRID
WITH BUS-25679 TRANSFORMER
PARAMETER
RECEIVER SECTION
Input Level
Input Impedance
Threshold Level
VALUE
40 V pk-pk differential max
4 k
Ω
differential min
1 V pk-pk nominal, internally set
(direct mode)
TTL, 10 LS loads
0.6 V max
2.5 V min
4 mA max
-400 µA max
PIN
1
2
3
4
5
6
7
8
9
10
11
12
BUS-8559 PIN FUNCTION TABLE
FUNCTION
TX Data Out
TX Data Out
Gnd
N.C.
N.C.
Variable Vcc
RX Data Out
Strobe
GND
RX Data Out
N.C.
N.C.
PIN
13
14
15
16
17
18
19
20
21
22
23
24
FUNCTION
+15V DC
N.C.
RX Data In
RX Data In
N.C.
GND
-15V DC
+5V DC
TX Inhibit
TX Data In
TX Data In
N.C.
Output Levels
Outputs:
V
OL
V
OH
I
OL
I
OH
TRANSMITTER SECTION
Input Levels
Inputs:
V
ih
V
il
I
ih
I
il
Output Level
TTL, 2 LS loads
2 V min
0.8 V max
80 µA max
-3.2 mA
0-27 V pk-pk nominal across 145
Ω
load
0-20 V pk-pk nominal
(measured at output of BUS-25679
XFMR output - XFMR coupled stub)
130 nsec typ
10 mV pk-pk differential max
0 to +15 V DC
.275 MAX
(7.0)
.250 MIN
(6.3)
TERMINAL
IDENTIFICATION
THIS SIDE
SIDE VIEW
.63
MAX
.200 ± .005
(5.1 ± 0.1)
1 8
7
2 6
5
3 4
.500 ± .005
(13 ± 0.1)
.63 MAX
(16.0)
Rise/Fall Time
Output Noise
Variable Vcc
.020 ± .002
(0.5 ± 0.1)
BOTTOM VIEW
NOTES:
1. All dimensions are in inches (millimeters).
2. Pin callouts on bottom view are for reference only.
POWER SUPPLIES
REQUIREMENTS
P.S.
VOLTS
+5 V
+15 V
-15 V
Vcc
STDBY
mA
25 max
30 max
30 max
0
25%
mA
22 max
30 max
30 max
70
100%
mA
21 max
30 max
30 max
180
BUS-25679 TRANSFORMER OUTLINE
0.750 MAX
(19.05)
0.150 MAX
(3.81)
0.250 MIN
(6.35)
NOTE: This unit will also operate with ±12 V P.S.
12
13
TEMPERATURE
RANGE
Operating (Case temp.)
Storage
1.390 MAX
(33.02)
-55°C to +125°C
-55°C to +135°C
1
24
0.600±0.002
(15.2 ±0.05)
BOTTOM VIEW
12 EQ.SP.
0.100=1.100
TOL. NONCUM
(2.5=27.9)
0.100
(2.54)
PHYSICAL
CHARACTERISTICS
Size (24-pin DDIP hybrid)
0.095
(2.41)
0.020 0.51 DIA PIN
0.016 0.41 24 PLACES
SIDE VIEW
1.4 x 0.8 x 0.2 inches
(36 x 20 x 5 mm).
0.4 oz
(11 g)
Weight
BUS-8559 MECHANICAL OUTLINE
2
ORDERING INFORMATION
BUS-8559-XX0X
Supplemental Process Requirements:
S = Pre-Cap Source Inspection
L = Pull Test
Q = Pull Test and Pre-Cap Inspection
Blank = None of the Above
Process Requirements:
0 = Standard DDC Processing, no Burn-In (See page xiii.)
1 = MIL-PRF-38534 Compliant
2 = B*
3 = MIL-PRF-38534 Compliant with PIND Testing
4 = MIL-PRF-38534 Compliant with Solder Dip
5 = MIL-PRF-38534 Compliant with PIND Testing and Solder Dip
6 = B* with PIND Testing
7 = B* with Solder Dip
8 = B* with PIND Testing and Solder Dip
9 = Standard DDC Processing with Solder Dip, no Burn-In (See page xiii.)
Temperature Grade/Data Requirements:
1 = -55°C to +125°C
2 = -40°C to +85°C
3 = 0°C to +70°C
4 = -55°C to +125°C with Variables Test Data
5 = -40°C to +85°C with Variables Test Data
8 = 0°C to +70°C with Variables Test Data
NOTE: The transceiver and transformer must be ordered as separate parts. Transformer P/N: BUS-25679
These products contain tin-lead solder finish as applicable to solder dip requirements.
3
The information in this data sheet is believed to be accurate; however, no responsibility is
assumed by Data Device Corporation for its use, and no license or rights are
granted by implication or otherwise in connection therewith.
Specifications are subject to change without notice.
Please visit our web site at
www.ddc-web.com
for the latest information.
105 Wilbur Place, Bohemia, New York 11716-2426
For Technical Support - 1-800-DDC-5757 ext. 7771
Headquarters -
Tel: (631) 567-5600, Fax: (631) 567-7358
United Kingdom -
Tel: +44-(0) 1635-811140, Fax: +44-(0) 1635-32264
France -
Tel: +33-(0) 1-41-16-3424, Fax: +33-(0) 1-41-16-3425
Germany -
Tel: +49-(0) 8141-349-087, Fax: +49-(0) 8141-349-089
Japan -
Tel: +81-(0) 3-3814-7688, Fax: +81-(0) 3-3814-7689
World Wide Web - http://www.ddc-web.com
U
®
L-ABR-09/09-0
PRINTED IN THE U.S.A.
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