BUS-63127 DDC, BUS-63127 Datasheet - Page 8

• Manufacturer Part Number: BUS-63127
• Description: MIL-STD-1553 DATA BUS SINGLE AND DUAL TRANSCEIVERS
• Manufacturer: DDC

RECEIVER OPERATING MODE
The receiver section accepts data from a MIL-STD-1553 Data
Bus when properly coupled through a transformer in either the
long stub or short stub configuration. The data is converted to
bi-phase TTL and provided to the RX Data and RX Data output
terminals for decoding. Applying a logic “1” to the STROBE
input enables data to pass through to the receiver output(outut
enabled). Applying a logic “0” to the STROBE input turns the
receiver output OFF (output disabled).
On BUS-63102, BUS-63104, BUS-63115, BUS-63117 and
BUS-63137 receiver outputs are both at a logic “1” when they
are either strobed off, or no signal is being received. This makes
these models directly compatible with the Smiths type
encoder/decoder. Typical operating waveforms are shown in
FIGURE 3.
ENCODER
OUTPUT
Notes:
(1) TX Data In and RX Data Out are TTL signals.
(2) TX Data In inputs must be at opposite logic levels during transmission, and at
(3) LINE-TO-LINE output voltage is measured between TX Data Out and TX Data Out.
(4) LINE-TO-LINE output voltage for BUS-63102 are sinusoidal waveforms for
(5) LINE-TO-LINE input voltage is measured on the Data Bus.
the same logic level when not transmitting.
1 MHz operating frequency.
FIGURE 3. TYPICAL OPERATING WAVEFORMS
LINE-TO-LINE
OUTPUT
LINE-TO-LINE
INPUT
RX Data Out
RX Data Out
TX Data In
TX Data In
FOR SMITHS-COMPATIBLE TRANS-
CEIVER
X X X
X X X
X X X
X X X
8
On all other models, BUS-63107, BUS-63125 and BUS-63127,
receiver outputs are both at a logic “0” when they are either
strobed off, or no signal is being received. This makes these
models
encoder/decoder.
FIGURE 4.
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ENCODER
OUTPUT
Notes:
(1) TX Data In and RX Data Out are TTL signals.
(2) TX Data In inputs must be at opposite logic levels during transmission, and at
(3) LINE-TO-LINE output voltage is measured between TX Data Out and TX Data Out.
(4) LINE-TO-LINE input voltage is measured on the Data Bus.
the same logic level when not transmitting.
FIGURE 4. TYPICAL OPERATING WAVEFORMS
directly
LINE-TO-LINE
OUTPUT
LINE-TO-LINE
INPUT
RX Data Out
RX Data Out
TX Data In
TX Data In
FOR HARRIS-COMPATIBLE TRANS-
CEIVER
Typical operating waveforms are shown in
compatible
X X X
X X X
with
the
Harris
X X X
X X X
type
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