Datasheet ACT4433-DI, ACT4433-DFI, ACT4433-DF, ACT4433-D Datasheet (ACT)

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eroflex Circuit Technology – Data Bus Modules For The Future © SCD4433D REV B 1/30/98

ACT 4433 DUAL TRANSCEIVER

FOR MIL-STD-1553/1760

Features

★ Smaller Case Outline then ACT4489D

CIRCUIT TECHNOLOGY

• +5 / ±12 Volt Supply Operation

• Low Power Dissipation

• Outstanding MIL-STD-1553 performance

• Radiation Hard Dielectric Isolation Monolithic
Construction for Severe Environments

• Input and Output TTL Compatible Design

• Processed and Screened to MIL-STD-883 Specs

• MIL-PRF-38534 Compliant Devices Available

TX DATA IN

TX DATA

TX INHIBIT IN

+5V (VL)

+15V (VCC)

-15V (V
GND1
GND2
GND3

RX DATA
RX DATA IN

CASE

RX STROBE IN

IN

EE)

IN

DRIVER

INPUT

AMPLIFIER

ACTIVE
FILTER

REFERENCE

ACTIVE
FILTER

OUTPUT
STAGE

COMP.

COMP.

Block Diagram (Without Transformer)

TX DATA OUT
TX DATA

OUT

OUT

RX DATA

RX DATA OUT

General Description

TheAeroflexCircuitTechnology
ACT 4433 is a next generation
monolithic transceiver design
which provide full compliance to
MIL-STD-1553A/Band1760re­quirements in a smaller package
with lower pin count then the
ACT4489D, for those designs with
less board space.

The ACT 4433 series performs
the front-end analog function of
inputting and outputting data
through a transformer to the
MIL-STD-1553 data bus.

Design of this transceiver reflects
particular attention to active filter
performance. This results in low bit
and word error rate with superior
waveform purity and minimal zero
crossover distortion. Efficient
transmitter electrical and thermal
design provides low internal power
dissipation and heat rise at high as
well as low duty cycles.

Transmitter:

The Transmitter section accepts
bi-phase TTL data at the input and
when coupled to the data bus with a
1:1 ratio transformer, isolated on
the data bus side with two 52.5
Ohm fault isolation resistors, and
loaded by two 70 Ohm
terminations, the data bus signal is
typically 7 Volts P-P at point A (See
Figure5). When both DATA and
DATA

inputs are held low or high,
the transmitter output becomes a
high impedance and is “removed”
from the line. In addition, an

overriding “INHIBIT" input provides
for the removal of the transmitter
output from the line. A logic “1”
signal applied to the “INHIBIT” takes
priority over the condition of the
data inputs and disables the
transmitter (See Transmitter Logic
Waveform, Figure1). The
Transmitter may be safely operated
for an indefinite period with the bus
(point A) short circuited at 100%
duty cycle.

Receiver:

The Receiver section accepts
bi-phase differential data at the
input and produces two TTL signals
at the output. The outputs are DATA
and DATA
and negative excursions of the input
beyond a pre-determined threshold
(See Receiver Logic Waveform,
Figure 2).

The pre-set internal thresholds will

, and represent positive

Figure 1 — Transmitter Logic Waveforms Idealized

DATA IN

DATA IN

detect data bus signals, point A
Figure 5, exceeding 1.20 Volts
P-P and reject signals less than

0.6 Volts P-P when used with a
transformer (See Figure 5 for
transformer data and typical
connection).

A low level at the RX Strobe
input inhibits the DATA and
DATA

outputs. If unused, a 2K
pull-up to +5 Volts is
recommended.

INHIBIT

LINE TO LINE

OUTPUT

Note:

DATA and DATA

and must be in the same state during off times (both high or low).

inputs must be complementary waveforms or 50% duty cycle average, with no delays between them,

Figure 2 — Receiver Logic Waveforms Idealized (ACT 4433D)

LINE TO LINE
INPUT

STROBE

DATA OUT

DATA OUT

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2

Note overlap

Absolute Maximum Ratings

Operating case temperature -55°C to +125°C
Storage case temperature -65°C to +150°C
Power supply voltage

CC

V
VEE
VL

-0.3 V to +18 V
+0.3 V to-18 V

-0.3 V to +7.0 V
Logic input voltage -0.3 V to +5.5 V
Receiver differential input ±40 V

P-P

Receiver input voltage (common mode) ±10 V
Driver peak output current 300 mA
Total package power dissipation over the full operating

case temperature rise

(Note: Normal operation conditions require one

2.5 Watts

transceiver on and the other off)
Maximum junction to case temperature 10°C
Thermal resistance – junction to case 4°C/W

Electrical Characteristics — Driver Section

Input Characteristics, TX DATA IN or TX DATA IN (Notes 2 & 3 apply)

Parameter Condition Symbol Min Typ Max Unit

"0" Input Current VIN = 0.4 V I
"1" Input Current V

= 2.7 V I

IN

"0" Input Voltage V
"1" Input Voltage V

Inhibit Characteristics

"0" Input Current
"1" Input Current
"0" Input Voltage
"1" Input Voltage
Delay from TX inhibit, (0→1) to inhibited output From mid pt
Delay from TX inhibit, (1→0) to active output

Differential output noise, inhibit mode
Differential output impedance (inhibited) Note 1

See Figure 5

= 0.4 V I

V

IN

=2.7V I

V

IN

inhibit to
±1.2V pt B,
See Figure 5

Point B
Point C

Output Characteristics

Differential output level,
See Figure 5
Rise and fall times(10% to 90% at pt A output)
See Figure 5
Output offset, Figure 3, 2.5µS after midpoint crossing

of the parity bit of the last word of a 660µS message
See Figure 5

Delay from 50% point of TX DATA or TX DATA

input

to zero crossing of differential signal. See Fig 5 Point A

Point A V
Point A

Point A

ILD
IHD

IHD
IHD

ILI

IHI

V

ILI

V

IHI

t

DXOFF

t

DXON

V

NOI

Z

OI

Z

OI

V

t

O

t

r

OS

DXT

-0.1 -0.2

mA

1 40 µA

0.7

V

2.0 V

-0.1 -0.2

1.0 40

0.7

2.0
175 225

90 150

mA

µA

V
V

nS
nS

2 10 mV

2K
1K

6 7 9

Ω
Ω

V

100 160 300 nS

± 90

100 200

mV peak

nS

P-P

P-P

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3

Electrical Characteristics — Receiver Section

Parameter Condition Symbol Min Typ Max Unit

Differential Receiver Input Voltage Range
(See Figure 5, Point B)

TXFMR

1:1

V

Common Mode Rejection Ratio (Note 3) CMRR
"1" State – Rx Data or Rx Data

"0" State – Rx Data or Rx Data

Output IOH = -0.4 mA
Output IOI = 4 mA

V
V

Delay (average) from Differential Input Zero

t

Crossings to RX DATA and RX DATA

Output

DXT

50% points

Input Threshold Voltage (referred to the bus)

100KHz–1MHz

V

Strobe Characteristics (Logic "0" Inhibits Output)

"0" Input Current VS=0.4V
"1" Input Current V

=2.7V

S

"0" Input Voltage
"1" Input Voltage V
Strobe Delay (Turn-on or Turn-off)

Power Data

Power Supply Currents – Per Channel – See Figure 4

Transmitter Standby

25% duty cycle

50% duty cycle

100% duty cycle

IDR

OH

OL

TH

I

I

V

t

I

CC

I

EE

I

CC

I

EE

I

CC

I

EE

I

CC

I

EE

IL

IH

SD

I

I

I

I

40

V

P-P

45 dB

2.5 3.7 V

0.35

0.5

V

270 400 nS

0.60

0.75

-0.1

IL

IH

L

L

2.0

115

L

230

L

1.15 V

-0.2

1 +40

0.7

50 100

0

12
18

58
12
18

1

16
30

63
20

30

125
12
18

20
30

250
12
18

20
30

P-P

mA

µA

V
V

nS

mA

Power Supply Voltages

V

CC

±12V Operating Power Supply Voltage Range
+5V

Operating Power Supply Voltage Range) V

+11.40

VEE

-11.40

L +4.50 +5.00 +5.50

+12.00

-12.00

Note 1. Power on or off, measured from 75KHz to 1MHz at point A and transformer self impedance of 3KΩ minimum

at 1MHz.

Note 2: Power Supplies: ±12 Volts ±0.60 V & +5 Volts ±0.5 V, bypassed by 10µF (Tantalum recommended)

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, DC to 2MHz
Note 4: Typical power is measured with V

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at point A = 7 V

BUS

P-P

4

+12.60

-12.60

V

V

Figure 3 – Transmitter (TX) Output Offset

POWER DISSIPATION

MILLIWATTS

Figure 5 – Typical 1553 Bus Connections

LAST BIT

Magnified View

0 Volts

2.5 µsec

OUTPUT OFFSET*

OUTPUT OFFSET

*

*Offset measured at point A in Figure 5

Figure 4 – Hybrid Power Dissipation vs. Duty Cycle

(Total hybrid with one channel transmitting

and the other not powered – 100% Duty Cycle)

3600
3200
2800
2400
2000
1600
1200
800
400

0.270
0

Note: Vcc= +12V, VEE = -12V, VL= +5V, Transformer ratio 1:1,

V

BUS

Typical Hybrid Input Power

Typical Hybrid

Dissipation

0 10 20 30 40 50 60 70 80 90 100

DUTY CYCLE – PERCENT

(point A) at 7VP-P.

3.0W

1.9W

Transformer Coupled Stub

ACT 4433

TX DATA OUT

TX DATA

OUT

RX DATA IN
RX DATA

IN

1 : 0.707

3

7

2

1

5

T1553-1

1 : 1.4

C

Zoi

Direct Coupled Stub

ACT 4433

TX DATA OUT

TX DATA

OUT

RX DATA IN
RX DATA

IN

Transformer Model use Technitrol Part# 1553-1

or equivalent

1 : 1

3
2

1

T1553-1

8

4

52.5Ω

B

52.5Ω

Zoi

VCM

52.5

52.5Ω

70Ω

Ω

A

A

70

Ω

Configurations and Ordering Information

ACT
Model # / Ordering Part #

ACT 4433-D Plug In TBA Normally Low
ACT 4433-DI Plug In TBA
ACT 4433-DF
ACT 4433-DFI

Specifications subject to change without notice.

Aeroflex Circuit Technology SCD4433D REV B 1/30/98 Plainview NY [phone]

Case
Style

Flat Package
Flat Package

5

DESC

Number

Rx Standby

Normally High

TBA Normally Low
TBA

Normally High

Figure 6 – Lead Numbers & Functions

ACT 4433D – Plug In and Flat Package

Pin # Function Channel

1 TX DATA OUT/ RX DATA IN A
2 TX DATA

OUT/ RX DATA IN A
3 GROUND A
4 RX STROBE A
5 RX DATA

OUT A
6 RX DATA OUT A
7 CASE A
8 TX DATA OUT/ RX DATA IN B
9 TX DATA

OUT/ RX DATA IN B
10 GROUND B
11 RX STROBE B
12 RX DATA

OUT B
13 RX DATA OUT B
14 NC B
15 GROUND B
16 -V B
17 V

L B

18 TX INHIBIT B
19 TX DATA

IN B
20 TX DATA IN B
21 +V B
22 GROUND A
23 -V A
24 V

L A

25 TX INHIBIT A
26 TX DATA

IN A
27 TX DATA IN A
28 +V A

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6

CIRCUIT TECHNOLOGY

Plug In Package Outline

1.480 MAX.

1528

Pin 1 & ESD

Designator

.250

.100

.018

1.300

(13 Equal Spaces at .100)

Flat Package Outline

1.500 MAX.
.015

0.780
MAX.

14

0.210
MAX.

1528

.180

MAX.

.072

0.600

0.780

.400

MIN.

MAX.

.100

14

.010

1.300

(13 Equal Spaces at .100)

Telephone: [phone]

FAX: [phone]

Toll Free Inquiries: (800) THE-1553

E-Mail: [e-mail]

7

Lead 1 & ESD

Designator

Aeroflex Circuit Technology
35 South Service Road
Plainview New York 11830
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