Aeroflex ACT4808DF Act4808 dual transceivers for macair a3818, a5690, a5232, a4905 & mil-std-1553 Datasheet

ACT4808 Dual Transceivers for
MACAIR A3818, A5690, A5232, A4905
& MIL-STD-1553
Features
• ACT4808 Dual Transceiver meets
MIL-STD-1553A & B, Macair A3818, A5690, A5232
and A4905 specs
• New Low Power Model –L Available
• Operates with ±12V to ±15V & +5V Power Supplies
• Voltage source output for higher bus drive power
• Plug-in or Flat Package
• Monolithic construction using linear ASICs
• Processed and Screened to MIL-STD-883 specs
ACT4808 Transceiver
TX DATA OUT
TX DATA IN
DRIVER
OUTPUT
STAGE
SHAPING
TX DATA IN
TX DATA OUT
V+
TX INHIBIT
COMP.
V-
+5 V
VEE
RX DATA IN
RX DATA IN
RX DATA OUT
INPUT
AMP
ACTIVE
FILTER
COMP.
RX DATA OUT
V CC
STROBE
Block Diagram (without Transformer), 1/2 of unit shown
CIRCUIT TECHNOLOGY
www.aeroflex.com/act1.htm
General Description:
The Aeroflex Laboratories transceiver
model ACT4808 is a new generation
Dual monolithic transceiver which
provides full compliance with Macair
and
MIL-STD-1553
data
bus
requirements
The model ACT4808 performs the
front-end analog function of inputting
and outputting data through a
transformer to a MIL-STD-1553 or
Macair data bus. The ACT4808 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 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. The ACT4808
series 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.The
receiver input threshold is set
Internally.
Transmitter
The Transmitter section accepts
bi-phase TTL data at the input and
when coupled to the data bus as per
Figure 3 or 4 and by two 70 Ohm
terminations (ZO), the data bus signal
produced is 6.5 Volts minimum P-P at
A-A’. When both DATA and DATA
eroflex Circuit Technology – Data Bus Modules For The Future © SCD4808 REV E 12/9/99
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 (Pt. A-A’).
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 1.10 Volts P-P and reject
signals less than 0.6 Volts P-P
when used with a 1:1 turns ratio
transformer. (See Figure 4 for
transformer data and typical
connection.)
A low level at the Strobe input
inhibits the DATA and DATA
outputs.
Figure 1 – Transmitter Logic Waveforms
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 2 – Receiver Logic Waveforms
LINE TO LINE
INPUT
DATA OUT
DATA OUT
Note overlap
NOTE: Waveforms shown are for normally low devices. For normally high receiver output
level devices, the receiver outputs are swapped as shown by the dashed lines
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Absolute Maximum Ratings, Per Channel
Operating Case Temperature
-55°C to +125°C
Storage Case Temperature
-65°C to +150°C
Power Supply Voltages
±16 V
+7 V
Logic Input Voltage
-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
3.6 Watts
18°C
Maximum Junction to Case Temperature
Junction-Case, Thermal Resistance
5°C/W
Electrical Characteristics Per Channel, 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
450
nS
Delay from TX inhibit, (1→0) to active output
-
tDXON
-
300
450
nS
Differential output noise, inhibit mode
3/
VNOI
-
0.8
10
mVp-p
Differential output impedance *
4/
ZOI
2K
-
-
Ω
VO
26
18
29
21
32
25
Vp-p
Vp-p
VOS
-
-
±360
±250
mVpk
mVpk
10% - 90%
tR & tF
200
250
300
nS
-
tDTX
240
300
nS
Inhibit Characteristics
* See Aeroflex Application note# 113 for reference.
Output Characteristics
Pt. B - B’
ZO = 70Ω
Differential output - Direct coupled stub
Differential output - Transformer coupled stub
(see Fig. 3 and 4)
Differential output offset - Direct coupled stub Fig. 4
Differential output offset - Xformer coupled stub Fig. 3
5/
Differential output rise / fall times (see Fig. 5)
Delay from 50% point of TX DATA or TX DATA input to
zero crossing of differential output.
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Electrical Characteristics Per Channel, Receiver Section 1/ 2/
Parameter
Condition
Symbol
Min
Typ
Max
Unit
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
Differential Input Impedance
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
-
-
150
nS
VTH
0.60
0.80
1.10
Vp-p
Threshold Characteristics (Sinewave Input )
Internal Threshold Voltage Fig. 4
Pt. B - B’
1MHz
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
Receiver Output Skew
6/
tRXSK
-
-
10
nS
Delay (average), from differential input zero
crossings to RX DATA and RX DATA output
50% points
7/
tDRX
-
300
450
nS
Power Supply Currents Per Channel 1/ 2/
VCC = +12V to +15V, VEE = -12V to -15V, VL = +5V
Std Version
-L Version
Typ
Max
Typ
Max
ICC
IEE
IL
30
50
25
60
75
35
5
25
18
10
35
30
ICC
IEE
IL
50
70
25
85
105
35
20
40
18
30
60
30
50%
ICC
IEE
IL
75
45
25
110
130
35
40
60
18
60
80
30
100%
ICC
IEE
IL
120
140
25
160
180
35
85
105
18
120
140
30
Duty Cycle
Transmitter
Standby
25%
Aeroflex Circuit Technology
Condition
Symbol
Pt. B - B’
ZO = 70 Ω,
VO = 29 VPK-PK
Bit Pattern = FFFFHEX
Fig. 4
4
Unit
SCD4808 REV E 12/9/99
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Typical Hybrid Power Dissipation*, Per Channel
Std Version
Power
Supply
Conditions
PSC1
VCC = +15V
VEE = -15V
VL = +5V
PSC2
VCC = +15V
VEE = -12V
VL = +5V
Standby
100%
Duty
Cycle
Standby
100%
Duty
Cycle
1.325
3.250
0.540
2.167
1.118
3.142
0.465
1.852
1.085
2.472
0.450
1.600
Condition
Pt. B - B’
ZO = 70 Ω,
VO = 29 VPK-PK
Bit Pattern = FFFFHEX
Fig. 4
PSC3
VCC = +12V
VEE = -12V
VL = +5V
-L Version
Unit
Watts
* See Aeroflex Application note# 112 for reference.
Recommended Power Supply Voltage Range
+V
+11.4 Volts to +15.75 Volts
-V
-11.4 Volts to -15.75 Volts
Logic
+4.5 Volts to +5.5 Volts
Notes:
1. VCC = +15Volts ±0.75V, VEE = -15Volts ±0.75V, VIL = +5Volts ±0.5V, TC = -55°C to +125°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 4, in accordance with MIL-STD-1553B
paragraph 4.5.2.2.2.3.
5. At point A-A’ on Figure 3 or 4, 2.5 µS after midpoint crossing of the parity bit of the last word of a 660 µS message.
6. Receiver skew is defined as the time from the rising edge of RX DATA OUT to the rising edge of RX DATA OUT
minus 500 nS, with a sine wave input of 3 VPK-PK at 1MHz driven into Pt. B-B’ of Figure 4 or 2.1 VPK-PK at 1MHz
driven into Pt. B-B’ of Figure 3. The specification maximum is guaranteed for TA = 25°C only. Standard TTL loads
applied to RX DATA Outputs.
7. 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.
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Terminal
TRANSCEIVER
UNDER TEST
Zo
TX DATA OUT
RX DATA IN
Isolation
Transformer
Coupling
Transformer
1:N
1 : 1.414
R
B
A
RX DATA OUT
Data
Bus
Wire
Pair
Isolation
Resistors
R = 0.75 ZO
RX DATA OUT
R
B'
A'
TX DATA OUT
RX DATA IN
Zo
Terminal Input Impedance B – B'
MIL-STD-1553B para 4.5.2.1.2.3
1KΩ minimum. 75KHz – 1MHz
Transformer turns ratio:
N = 0.707
Recommend Technitrol 1553-1
Figure 3 – Databus Interface Using Transformer Coupling (Figure 9, MIL-STD-1553B)
Terminal
TRANSCEIVER
UNDER TEST
TX DATA OUT
RX DATA IN
Zo
Isolation
Transformer
55Ω
1:N
B
A
Data
Bus
Wire
Pair
RX DATA OUT
RX DATA OUT
55Ω
B'
A'
TX DATA OUT
RX DATA IN
Zo
Transformer turns ratio:
N=1
Recommend Technitrol 1553-1
Terminal Input Impedance B – B'
MIL-STD-1553B para 4.5.2.2.2.3
2KΩ minimum. 75KHz – 1MHz
Figure 4 – Databus Interface Using Direct Coupling (Figure 10, MIL-STD-1553B)
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Figure 5 – Transmitter (TX) Output Wave form
Figure 6 – Transmitter (TX) Output offset
LAST BIT
tf*
90%
Magnified View
6.5V P-P MIN
8.0V P-P MAX
0 Volts
OUTPUT OFFSET
*
OUTPUT OFFSET
*
0 Volts
10%
2.5 µsec
tr*
*Offset measured at point A-A’ in Figure 3 or 4
* Rise and fall times measured at point A-A’ in Figure 3 or 4
Figure 8 – Typical Hybrid Power Dissipation
vs. Duty Cycle (Per Channel) -L Version
4.0
4.0
3.6
3.6
3.2
3.2
2.8
2.8
2.4
POWER DISSIPATION
WATTS
POWER DISSIPATION
WATTS
Figure 7 – Typical Hybrid Power Dissipation
vs. Duty Cycle (Per Channel)
PSC 2
2.0
PSC 1
1.6
PSC 3
1.2
0.8
0.4
0
0
2.4
2.0
PSC 1
PSC 2
1.6
PSC 3
1.2
0.8
0.4
10
20
30
40
50
60
70
80
0
0
90 100
DUTY CYCLE, PERCENT
10
20
30
40
50
60
70
80
90 100
DUTY CYCLE, PERCENT
Configurations and Ordering Information
Model Number’s.
DESC No.
Receiver Data level
Case
ACT4808D
ACT4808LD
TBA
Normally Low
Plug In
ACT4808DF
ACT4808LDF
TBA
Normally Low
Flat Pack
ACT4808DI
ACT4808LDI
TBA
Normally High
Plug In
ACT4808DFI
ACT4808LDFI
TBA
Normally High
Flat Pack
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CIRCUIT TECHNOLOGY
Dual In Line
Pin Numbers & Functions
1.90 MAX
0.085
1.70
.097
19
36
0.78
MAX
0.600
18
Pin 1 & ESD
Designator
0.24
MIN
0.018 DIA.
±0.002
Function
Channel
1
TX DATA OUT
A
2
TX DATA OUT
A
3
GROUND
A
4
NC
5
RX DATA OUT
A
6
STROBE
A
7
GROUND
A
8
RX DATA OUT
A
9
CASE
10
TX DATA OUT
B
11
TX DATA OUT
B
12
GROUND
B
13
NC
Flat Package
14
RX DATA OUT
B
0.78 MAX
15
STROBE
B
19
18
0.015
±0.002
1.90 MAX
0.10 Typ
36
0.097
0.086 R
4 Places
0.175 MAX
Pin 1 & ESD
Designator
0.010
±0.002
0.40
MIN
2 SIDES
0.065
REF
Notes
1. Dimensions shown are in inches
2. Pins are equally spaced at 0.100±0.002 tolerance,
non-cumulative, each row
Specifications subject to change without notice.
Aeroflex Circuit Technology
35 South Service Road
Plainview New York 11803
Aeroflex Circuit Technology
Pin #
16
GROUND
B
17
RX DATA OUT
B
18
NC
19
VCC
B
20
RX DATA IN
B
21
RX DATA IN
B
22
GROUND 3
B
23
VEE
B
24
+5V
B
25
INHIBIT
B
26
TX DATA IN
B
27
TX DATA IN
B
28
VCC
A
29
RX DATA IN
A
30
RX DATA IN
A
31
GROUND
A
32
VEE
A
33
+5 V
A
34
INHIBIT
A
35
TX DATA IN
A
36
TX DATA IN
A
Telephone: (516) 694-6700
FAX:
(516) 694-6715
Toll Free Inquiries: 1-(800) THE-1553
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