ACT4487 Aeroflex Circuit Technology, ACT4487 Datasheet

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ACT4487

Manufacturer Part Number
ACT4487
Description
Act 4487 Dual Transceiver For Mil-std-1553/1760
Manufacturer
Aeroflex Circuit Technology
Datasheet
Features
• +5 / ±15 Volt Supply Operation
• Low Power Dissipation
• Small Size & Light Weight
• Dual Transceivers Saves Space & Cost
• Outstanding MIL-STD-1553 performance
• Radiation Hard Dielectric Isolation Monolithic
• Superior High Frequency Line Transient and
• Input and Output TTL Compatible Design
• Processed and Screened to MIL-STD-883 Specs
• MIL-PRF-38534 Compliant Devices Available
• DESC SMD (Standard Military Drawing)
RX STROBE IN
TX INHIBIT IN
Construction for Severe Environments
Input Ripple Rejection
TX DATA IN
RX DATA IN
RX DATA IN
TX DATA IN
+15V (V
-15V (V
eroflex Circuit T
+5V (V
GND1
GND2
GND3
CASE
CC
EE
L
)
)
)
Block Diagram (Without Transformer)
AMPLIFIER
ACT 4487 DUAL TRANSCEIVER
DRIVER
INPUT
echnology
FOR MIL-STD-1553/1760
REFERENCE
ACTIVE
FILTER
ACTIVE
FILTER
– Data Bus Modules For The Future © SCD4487D REV B 3/10/98
OUTPUT
STAGE
COMP.
COMP.
TX DATA OUT
TX DATA OUT
RX DATA OUT
RX DATA OUT
Technology ACT 4487 is a next
generation monolithic transceiver
design
compliance to MIL-STD-1553A/B
and 1760 requirements in a small
package
consumption.
the front-end analog function of
inputting
through
MIL-STD-1553 data bus.
particular attention to active filter
performance. This results in low bit
and word error rate with superior
waveform purity and minimal zero
crossover
transmitter electrical and thermal
design provides low internal power
dissipation and heat rise at high as
well as low duty cycles.
transceiver is completely separate
from
independent. This includes power
leads as well as signal lines.
Hence, each channel may be
connected to a different data bus
with no interaction.
Transmitter:
bi-phase TTL data at the input and
when coupled to the data bus with a
1.4:1 ratio transformer, isolated on
the data bus side with two 52.5
Ohm fault isolation resistors, and
loaded
General Description
The
The ACT 4487 series performs
Design of this transceiver reflects
Each
The Transmitter section accepts
www.aeroflex.com/act1.htm
CIRCUIT TECHNOLOGY
the
channel
a
which
by
and
Aeroflex
with
distortion.
transformer
other
two
outputting
provides
of
low
and
70
the
Efficient
to
Circuit
power
Ohm
data
dual
fully
the
full

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ACT4487 Summary of contents

Page 1

ACT 4487 DUAL TRANSCEIVER FOR MIL-STD-1553/1760 Features • ±15 Volt Supply Operation • Low Power Dissipation • Small Size & Light Weight • Dual Transceivers Saves Space & Cost • Outstanding MIL-STD-1553 performance • Radiation Hard Dielectric Isolation ...

Page 2

... LINE TO LINE OUTPUT Note: DATA and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them, and must be in the same state during off times (both high or low). Figure 2 — Receiver Logic Waveforms Idealized (ACT4487D) LINE TO LINE INPUT STROBE ...

Page 3

... See Figure 5 Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal. See Fig 5 Aeroflex Circuit Technology Absolute Maximum Ratings (Note: Normal operation conditions require one Condition Symbol ...

Page 4

... Capacitor minimum. All measurements & specifications apply over the temperature range of -55°C to +125°C (case temperature) unless otherwise specified. Note 3: When measured as shown per Figure 5 with ± 10 Volt peak, line to ground 2MHz Note 4: Typical power is measured with V Aeroflex Circuit Technology Condition Symbol TXFMR V 1 ...

Page 5

... BUS Configurations and Ordering Information ACT Model # / Ordering Part # ACT 4487-D ACT 4487-DI ACT 4487-DF ACT 4487-DFI Specifications subject to change without notice. Aeroflex Circuit Technology Figure 5 – Typical 1553 Bus Connections Magnified View ACT 4487 * TX DATA OUT OUTPUT OFFSET * OUTPUT OFFSET ...

Page 6

... Aeroflex Circuit Technology Figure 6 – Lead Numbers & Functions ACT4487D Pin Function Channel # 1 TX DATA OUT DATA OUT A 3 GROUND DATA OUT A 6 STROBE A 7 GROUND DATA OUT A 9 CASE 10 TX DATA OUT DATA OUT ...

Page 7

... .097 MAX Aeroflex Circuit Technology 35 South Service Road Plainview New York 11830 www.aeroflex.com/act1.htm Aeroflex Circuit Technology Model ACT4487D Dual In Line 1.90 MAX 1. 0.78 18 Pin 1 & ESD Designator 0.24 MIN 0.018 DIA. ±0.002 Model ACT4487D Flat Package ...

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