AEROFLEX ACT4444

Standard Products
ACT4444 Transceiver
for MIL-STD-1553 / MACAIR in a Chipscale Package
Preliminary
October 1, 2003
FEATURES
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Transceiver meets MIL-STD-1553A & B, Macair A3818, A4905, A5232 and A5690 specs
Bipolar Supply ±15V to ±12V, Logic Supply +5V
Replacement for function of CT3232 & ACT4404 in new designs
Voltage source output
Monolithic construction
Aeroflex is a Class H & K MIL-PRF-38534 Manufacturer
Miniature Chipscale Package Bumped Chip Carrier™ (BCC++)
NOTE: BCC++ and Bumped Chip Carrier are Trademarks of Fujitsu Ltd.
GENERAL DESCRIPTION
The Aeroflex Laboratories transceiver model ACT4444 is a monolithic transceiver which provides full compliance with Macair and
MIL-STD-1553 data bus requirements. The model ACT4444 performs the front-end analog function of inputting and outputting data through a
transformer to a MIL-STD-1553 or Macair data bus with a few external components.
The ACT4444 can be considered a "Universal" Transceiver in that it is compatible with MIL-STD-1553A, B, Macair A-3818, A-4905, A-5232
and A-5690.
Design of these transceivers 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. The ACT4444 active filter design has additional high frequency roll-off to provide the
required Macair low harmonic distortion waveform without increasing the pulse delay characteristics significantly.
Efficient transmitter electrical and thermal design provides low internal power dissipation and heat rise at high and well as low duty cycles.
An optional receiver input threshold adjustment can be accomplished by the use of the "External Threshold" terminals.
TRANSMITTER
The Transmitter section accepts bi-phase TTL data at the input and when coupled to the data bus with a 1:1 transformer, isolated on the data bus
side with two 55 Ohm fault isolation resistors, and loaded by two 70 thru 85 Ohm terminations plus additional receivers, the data bus signal
produced is 7.0 Volts minimum P-P at A-A’ (See Figure 3 or 4). 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” applied to the “INHIBIT” takes priority over the condition of the data inputs and disables the
transmitter (See Transmitter Logic Waveforms - Figure 1).
The transmitter utilizes an active filter to suppress harmonics above 1 MHz to meet Macair specifications A-3818, A-4905, A-5232 and A-5690.
The transmitter may be safely operated for an indefinite period at 100% duty cycle into a data bus short circuit.
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 represent positive and negative excursions of the input beyond a pre-determined threshold (See Receiver Logic Waveforms Figure 2).
The internal threshold is nominally set to detect data bus signals exceeding 1.05 Volts P-P and reject signals less than 0.6 Volts P-P when used
with a 1:1 turns ratio transformer (See Figure 3 or 4 for transformer data and typical connections). This threshold setting can be held by
grounding the appropriate pins or modified with the use of external resistors.
A low level at the Strobe input inhibits the DATA and DATA outputs. If unused, a 2K Ohm pull-up to +5 Volts is recommended.
SCD4444 Rev B
TX DATA OUT
TX DATA IN
DRIVER
SHAPING
TX DATA IN
OUTPUT
STAGE
TX DATA OUT
COMP.
RX DATA OUT
V+
TX INHIBIT
EXT. THRESHOLD
DATA
DATA
SET INTERNAL
THRESHOLD DATA
EXT. THRESHOLD
DATA
+5 V
-12V or -15V
RX DATA IN
RX DATA IN
V-
INPUT
AMP
ACTIVE
FILTER
COMP.
RX DATA OUT
+15V or +12V
STROBE
BLOCK DIAGRAM (WITHOUT TRANSFORMER)
DATA IN
DATA IN
INHIBIT
LINE TO LINE
OUTPUT
Notes: 1. Line to line waveforms illustrate Macair signals, MIL-STD-1553 signals are trapezoidal.
2. DATA and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them.
3. DATA and DATA must be in the same state during off time (both high or low).
FIGURE 1 - TRANSMITTER LOGIC WAVEFORMS
LINE TO LINE
INPUT
DATA OUT
DATA OUT
Note overlap
FIGURE 2 - RECEIVER LOGIC WAVEFORMS
NORMALLY HIGH OR LOW OUTPUT IN STANDBY (SEE FIGURE 3 OR 4)
SCD4444 Rev B
2
ABSOLUTE MAXIMUM RATINGS
Operating Case Temperature
-40°C to +85°C
Storage Case Temperature
-65°C to +150°C
Power Supply Voltages
±16 V
Logic Input Voltage
+7 V
-0.3 V to +5.5 V
Receiver Differential Input
±40 V
Receiver Input Voltage (Common Mode)
±10V
Driver Peak Output Current
150 mA
Total Package Power Dissipation over the Full Operating Case
Temperature Range *
3.25 Watts
Maximum Junction to Case Temperature
3.25°C
Junction-Case, Thermal Resistance
1°C/W
* See Aeroflex Application Note # 112 for reference.
ELECTRICAL CHARACTERISTICS – TRANSMITTER SECTION 1/ 2/
INPUT CHARACTERISTICS, TX DATA IN OR TX DATA IN
Parameter
Condition
Symbol
Min
Typ
Max
Unit
"0" Input Current
VIN = 0.4 V
IILD
-
-0.2
-0.4
mA
"1" Input Current
VIN = 2.7 V
IIHD
-
1.0
40
µA
"0" Input Voltage
-
VIHD
-
-
0.7
V
"1" Input Voltage
-
VIHD
2.0
-
-
V
"0" Input Current
VIN = 0.4 V
IILI
-
-0.2
-0.4
mA
"1" Input Current
VIN = 2.7 V
IIHI
-
1.0
40
µA
"0" Input Voltage
-
VILI
-
-
0.7
V
"1" Input Voltage
-
VIHI
2
-
-
V
Delay from TX inhibit(0→1) to inhibited output
-
tDXOFF
-
300
500
nS
Delay from TX inhibit, (1→0) to active output
-
tDXON
-
300
500
nS
Differential output noise, inhibit mode
3/
VNOI
-
0.8
10
mVp-p
Differential output impedance *
4/
ZOI
2K
-
-
Ω
VO
26
29
32
Vp-p
Differential output offset - Direct coupled stub
Figure 3 or 4
Pt. B - B’
ZO =
70Ω-85Ω
5/
VOS
-
-
±360
mVpk
Differential output rise / fall times (See Figure 5)
10% - 90%
tR & tF
200
250
300
nS
-
tDTX
280
350
nS
INHIBIT CHARACTERISTICS
* See Aeroflex Application Note # 113 for reference.
OUTPUT CHARACTERISTICS
Differential output - Direct coupled stub
(See Figure 3 or 4)
Delay from 50% point of TX DATA or TX DATA input
to zero crossing of differential output.
SCD4444 Rev B
3
ELECTRICAL CHARACTERISTICS – RECEIVER SECTION 1/ 2/
Parameter
Condition
Symbol
Min
Typ
Max
Unit
Differential Input Impedance
f = 1MHz
ZIN
10K
-
-
Ω
Differential Input Voltage Range
-
VIDR
-
-
40
Vp-p
Input Common Mode Voltage Range
-
VICR
10
-
-
Vp-p
Common Mode Rejection Ratio
-
CMRR
40
-
-
dB
STROBE CHARACTERISTICS (LOGIC "0" INHIBITS OUTPUT)
"0" Input Current
VS = 0.4 V
IIL
-
-0.2
-0.4
mA
"1" Input Current
VS = 2.7 V
IIH
-
1.0
+40
µA
"0" Input Voltage
-
VIL
-
-
0.7
V
"1" Input Voltage
-
VIH
2.0
-
-
V
Strobe Delay (Turn-on or Turn-off)
-
tSD
-
-
250
nS
0.60
0.80
1.10
Vp-p
THRESHOLD CHARACTERISTICS (SINEWAVE INPUT )
Internal Threshold Voltage
(See Figure 3 or 4)
Pt. B - B’
1MHz
VTH
OUTPUT CHARACTERISTICS, RX DATA AND RX DATA
"1" State
IOH = -0.4 mA
VOH
2.5
3.6
-
V
"0" State
IOL = 4 mA
VOL
-
0.35
0.5
V
6/
tDRX
-
300
500
nS
Delay (average), from differential input zero
crossings to RX DATA and RX DATA output
50% points
POWER SUPPLY CURRENT 1/ 2/
Duty Cycle
Condition
Symbol
Typ
Max
Transmitter
Standby
Pt. B - B’, ZO = 70 Ω, VO = 29 VPK-PK
Bit Pattern = FFFFHEX
Figure 3 or 4
ICC
IEE
IL
5
25
18
10
35
30
25%
ICC
IEE
IL
20
40
18
30
60
30
50%
ICC
IEE
IL
40
60
18
60
80
30
100%
ICC
IEE
IL
85
105
18
120
140
25
SCD4444 Rev B
4
Unit
mA
TYPICAL HYBRID POWER DISSIPATION *
Power Supply
Conditions
Standby
100% Duty
Cycle
0.540
2.167
PSC2
VCC = +15V
VEE = -12V
VL = +5V
0.465
1.852
PSC3
VCC = +12V
VEE = -12V
VL = +5V
0.450
1.600
PSC1
VCC = +15V
VEE = -15V
VL = +5V
Condition
Pt. B - B’, ZO = 70 Ω, VO = 29 VPK-PK
Bit Pattern = FFFFHEX
Figure 3 or 4
Unit
Watts
* See Aeroflex Application note# 112 for reference.
RECOMMENDED POWER SUPPLY VOLTAGE RANGE
VCC
+11.4 Volts to +15.75 Volts
VEE
-11.4 Volts to -15.75 Volts
VL
+4.5 Volts to +5.5 Volts
Notes:
1. VCC = +15Volts ±0.75V, VEE = -15Volts ±0.75V, VIL = +5Volts ±0.5V, TC = -40°C to +85°C, unless otherwise specified.
2. All typical values are measured at +25°C.
3. Characteristics guaranteed by design, not production tested.
4. Power ON/OFF, measured from 75KHz to 1MHz at Point A-A’ Figure 3 or 4, in accordance with MIL-STD-1553B paragraph
4.5.2.2.2.3.
5. At point A-A’ on Figure 3 or 4, 2.5µS after midpoint crossing of the parity bit of the last word of a 660 µS message.
6. This test is peformed while the Transceiver is reading its own transmission. This condition is called "Wraparound". Standard TTL
loads applied to RX DATA Outputs.
SCD4444 Rev B
5
+5Vdc
+15Vdc
+
+
0.01µF
6.8µF
TANTALUM
34, 54, 56
CERAMIC
1, 18
VL
59
Tx DATA IN
Tx DATA BUF IN
VREF
2/
VCA CONT 1
Tx DATA OUT
5
Rx DATA IN
51
Rx FIL OUT
48
41
COMP 1 NH
32
Rx 1 IN
31
Rx GND1
COMP 2 NH
Rx GND2
COMP 2 NI
43
38
37
+VTH
39
40
COMP -VTH IN
-VTH RTN
VEERX
35, 47
VEETX
VEETX
44
-VTH
*
NC
45
COMP +VTH IN
+VTH RTN
Rx STROBE IN
NC
36
Rx 2 IN
Rx GND3
46
Rx DATA OUT
27
GND2
29
A'
Tx DATA OUT
0.01µF
Rx DATA OUT
33
50KΩ
1%
50
55
B'
30
COMP 1 NI
DEXORIN
42
8
28
Rx STROBE IN
DEXORIN
55
Data
Bus
Wire
Pair
CERAMIC
Rx 1 OUT
61
A
Zo
Rx 2 OUT
CTRUNC
60
Tx DATA OUT
B
6
3
16
*
COMP IN
ACT4444
NPO
50KΩ
1%
55
4
Pulse 1553-1
or Equivalent
GND1
20
Zo
TANTALUM
7
Tx DATA FIL OUT
19
26
1:1
1
2
52
Rx DATA IN
13
5KΩ
1/
0.47µF
3
*
CERAMIC
Tx DATA FIL OUT
11
10-15pF
Tx DATA OUT
6.8µF
CERAMIC
Tx DATA BUF IN
8
23
VCCRX
Tx INHIBIT IN
6
5KΩ
1/
VCCTX
Tx DATA IN
57
Tx INHIBIT IN
10KΩ, 5%
53
9
*
Tx DATA IN
58
Tx DATA IN
VCCTX
0.01µF
5, 14
10
-15Vdc
Notes:
1/ 5KΩ Tolerance ±5%, Ratio 1%.
2/ Range 10-15pF. To adjust positive half of command sync for nominal 1500ns.
0.01µF
* High current lines (~100mA)
6.8µF
+
TANTALUM
CERAMIC
FIGURE 3 – TYPICAL CONNECTIONS – DATABUS INTERFACE, DIRECT COUPLED STUB,
NORMALLY HIGH RECEIVER IDLE STATE
+5Vdc
+15Vdc
+
+
0.01µF
6.8µF
TANTALUM
CERAMIC
34, 54, 56
1, 18
VL
59
Tx DATA IN
58
Tx DATA IN
57
Tx INHIBIT IN
6
8
11
10-15pF
2/
20
61
50KΩ
1%
50KΩ
1%
Tx INHIBIT IN
Rx DATA IN
55
42
50
29
46
43
0.47µF
3
1
*
2
16
3
Rx DATA IN
51
Rx FIL OUT
48
COMP IN
ACT4444
55
4
Tx DATA OUT
B
A
Data
Bus
Wire
Pair
6
CTRUNC
DEXORIN
Tx DATA OUT
A'
Zo
41
Rx DATA OUT
27
Rx STROBE IN
COMP 1 NI
33
COMP 1 NH
32
Rx 1 IN
31
Rx GND1
COMP 2 NH
Rx GND2
COMP 2 NI
Rx GND3
+VTH
COMP +VTH IN
+VTH RTN
COMP -VTH IN
-VTH RTN
Rx DATA OUT
30
Rx 2 OUT
Rx 2 IN
10
55
0.01µF
Rx STROBE IN
GND2
VEETX
B'
28
DEXORIN
VEETX
8
Pulse 1553-1
or Equivalent
CERAMIC
Rx 1 OUT
GND1
35, 47
1:1
5
52
Tx DATA FIL OUT
VEERX
Zo
TANTALUM
7
Tx DATA OUT
Tx DATA FIL OUT
VCA CONT 1
6.8µF
CERAMIC
Tx DATA BUF IN
NPO
60
*
Tx DATA IN
VREF
26
VCCRX
CERAMIC
Tx DATA BUF IN
5KΩ
1/
VCCTX
Tx DATA OUT
19
23
10KΩ, 5%
53
9
*
Tx DATA IN
13
5KΩ
1/
VCCTX
0.01µF
-VTH
*
NC
36
38
NC
37
45
39
40
44
5, 14
-15Vdc
Notes:
1/ 5KΩ Tolerance ±5%, Ratio 1%.
2/ Range 10-15pF. To adjust positive half of command sync for nominal 1500ns.
* High current lines (~100mA)
0.01µF
6.8µF
+
TANTALUM
CERAMIC
FIGURE 4 – TYPICAL CONNECTIONS – DATABUS INTERFACE, DIRECT COUPLED STUB,
NORMALLY LOW RECEIVER IDLE STATE
SCD4444 Rev B
6
LAST BIT
tf*
90%
Magnified View
6.5V P-P MIN
8.0V P-P MAX
OUTPUT OFFSET
*
OUTPUT OFFSET
*
0 Volts
0 Volts
10%
2.5 µsec
tr *
* Rise and fall times measured at point A-A’ in Figure 3 or 4
*Offset measured at point A-A’ in Figure 3 or 4
FIGURE 5 – TRANSMITTER (TX) OUTPUT
WAVE FORM
FIGURE 6 – TRANSMITTER (TX)
OUTPUT OFFSET
4.0
3.6
POWER DISSIPATION
WATTS
3.2
2.8
2.4
2.0
PSC 1
PSC 2
1.6
PSC 3
1.2
0.8
0.4
0
0
10
20
30
40
50
60
70
80
90 100
DUTY CYCLE, PERCENT
FIGURE 7 – TYPICAL HYBRID POWER DISSIPATION vs DUTY CYCLE
SCD4444 Rev B
7
PACKAGE PIN OUT DESCRIPTION - ACT4444
Pin #
Function
Pin #
Function
1
VCCTX *
33
COMP 1 NL
2
NC
34
VL
3
TX DATA OUT *
35
VEERX
4
NC
36
RX 2 IN
5
VEETX *
37
COMP 2 NL
6
TX DATA BUF IN
38
COMP 2 NH
7
VCA DATA OUT
39
COMP +VTH IN
8
TX DATA FIL OUT
40
COMP -VTH IN
9
VCCTX
41
COMP IN
10
VEETX
42
RX GND 1
11
TX DATA FIL OUT
43
-VTH RTN
12
VCA DATA OUT
44
-VTH
13
TX DATA BUF IN
45
+VTH
14
VEETX *
46
+VTH RTN
15
NC
47
VEERX
16
TX DATA OUT *
48
RX FIL OUT
17
NC
49
NC
18
VCCTX *
50
RX GND 2
19
VREF
51
RX DATA IN
20
CTRUNC
52
RX DATA IN
21
NC
53
VCCRX
22
NC
54
VL
23
VCA CONT1
55
GND 2
24
NC
56
VL
25
NC
57
TX INHIBIT IN
26
GND 1
58
TX DATA IN
27
RX STROBE IN
59
TX DATA IN
28
RX 2 OUT
60
DEXORIN
29
RX GND 3
61
DEXORIN
30
RX 1 OUT
62
NC
31
RX 1 IN
63
NC
32
COMP 1 NH
64
NC
* High Current Line (~100mA)
NC = No Connect
SCD4444 Rev B
8
PACKAGE DESCRIPTION
TOP VIEW
PIN 1 IDENTIFER & ESD INDICATOR
0.80 MAX
Y
9.00 ± .10
X
0.67± .025
Z
.075± .025
0.20
.20 Z
9.00 ± 0.10
ACT4444
.05
Z
MM
Inches
9
.354
8.2
.323
8.15
.321
0.8
.0315
0.67
.026
0.5
.020
0.45
.018
0.3
.012
0.2
.008
0.1
.00394
0.08
.00315
0.075
.00295
0.05
.002
0.03
.0012
0.025
.001
0.020
.0008
BOTTOM VIEW
8.2 TYP
Pin 33
.50 TYP
Pin 17
.45 ± .03
.08 M Z X Y
.50 TYP
.50± .10
6.8
8.15 TYP
"B"
Pin 1
DETAIL "C" (3 PL)
C .20 x 45°
.40 ±.03
.08 M Z X Y
7.4
.45 ± .03
.08 M Z X Y
.45 ± .03
.08 M Z X Y
C .20 x 45°
6.8
C.L.(Pkg)
C.L.(Pkg)
.50± .10
8.2 TYP
7.4
Pin 49
"A"
8.15 TYP
"C"
.45 ± .03
.08 M Z X Y
DETAIL "A"
Notes
1. Dimensions in millimeters
SCD4444 Rev B
9
.30 ± .03
.08 M Z X Y
DETAIL "B" (60 PL)
CONFIGURATIONS AND ORDERING INFORMATION
Model No.
Screening Level
Receiver And Transmitter Data
Levels
Package
ACT4444
Industrial Temperature
-40°C to +85°C
User Configurable
(See Figure 3 & 4)
64 Bump Chip
Carrier
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www.aeroflex.com
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Aeroflex Microelectronic Solutions reserves the right to
change at any time without notice the specifications, design,
function, or form of its products described herein. All
parameters must be validated for each customer's application
by engineering. No liability is assumed as a result of use of
this product. No patent licenses are implied.
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SCD4444 Rev B
10