eroflex Circuit T
echnology
Data Bus Modules For The Future SCDCT1469 REV A 3/22/00
Features
Low Level 0.65V output
Optional transformer isolation
Internally set threshold
Operates with 5 volt supply
Matched to 50 ohms system impedance power on or off
Bipolar construction for radiation resistance
Power management
Interfaces directly to the CT1496-2 (Manchester Encoder)
and CT1508-2 (Manchester Decoder)
MIL-PRF-38534 compliant devices available
General Description
CT1469-2 is a hybrid microcircuit which incorporates a MIL-STD 1397 Type E 10MHz transceiver in
a single package. The transmitter section accepts 10MHZ serial Manchester encoded TTL NRZ data
from the encoder and transformer couples a bipolar 0.65 volt (nominal) signal level to a 50 ohm
triaxial cable for transmission up to 1000 ft. The CT1469-2 receiver accepts a bipolar signal level
and outputs an NRZ TTL serial data or SIS / SOS signal to the decoder (CT1508-2). Aeroflex Circuit
Technology is a 80,000 square foot MIL-PRF-38534 certified facility in Plainview, N.Y.
CIRCUIT TECHNOLOGY
www.aeroflex.com
F
I
E
I
D
C
E
R T
A
E
R
O
F
L E
X L A
B
S
I
N
C
.
ISO
9001
Figure 1 Block Diagram
MIL-STD-1397 Type E 10MHz Transceiver
CT1469-2
Power
Conditioner
Drive 2
Xfmr Sec /
RX Data Input
Xfmr Sec
Xfmr Primary /
TX Data Output
Xfmr Primary /
TX Data Output
Xfmr Sec
Xfmr Sec /
RX Data Input
RX Data
RX Data
Receiver
Drive 1
Strobe
TX Inhibit
TX Data Input
TX Data Input
-5V
+5V
Digital and Analog
Gnd
Linear
Amp
Level
Detector
Level
Detector
Linear
Amp
Aeroflex Circuit Technology
SCDCT1469 REV A 3/22/00 Plainview NY (516) 694-6700
2
Introduction
The specification detailed herein encompasses a hybrid transceiver designed to meet
the requirements of STANAG 4153 and Type E requirements of MIL-STD-1397. The
transceiver is transformer coupled to the specified triaxial cable and is available
compliant to MIL-PRF 38534.
Electrical Requirements
See Figure 1 for block diagram. All input and output signals are manchester encoded.
The transformer is internal to the package with its use being optional.
Aeroflex Circuit Technology
SCDCT1469 REV A 3/22/00 Plainview NY (516) 694-6700
3
Absolute Maximum Ratings
Parameter
Rating
Units
Supply Voltage
Vcc
V
EE
+0.5 to +7.0
-0.5 to -7.0
V
V
Input Voltage
Digital V
IN
(
D
)
Receiver V
IN
(
R
)
-0.5 to +5.5
2
V
V
Power Dissipation P
D
2.0
W
Storage Temperature Range T
STG
-60 to +150
C
Operating Case Temperature Range T
C
-55 to +100
C
DC Electrical Characteristics
(V
CC
= 5V 10%, V
EE
= -5V 10%, T
C
= -55 C to +100C, unless otherwise specified)
SYMBOL
PARAMETER
LIMIT
RX DATA (7), RX DATA (8)
V
OH
Logic High Output Voltage
2.4V min @ I
OH
= -80A, V
CC
= +4.5V,
V
EE
= -4.5V
V
OL
Logic Low Output Voltage
0.4V max @ I
OL
= 3.2mA, V
CC
= +4.5V,
V
EE
= -4.5V
TX DATA INPUT (22), TX DATA INPUT (24)
1/
I
IH
Logic High Input Current
50A max @ V
IH
= 2.4V, V
CC
= +5.5V, V
EE
= -5.5V
I
IL
Logic Low Input Current
-2mA max @ V
IL
= 0.4V, V
CC
= +5.5V, V
EE
= -5.5V
TX INHIBIT INPUT (23)
1/
I
IH
Logic High Input Current
100A max @ V
IH
= 2.4V, V
CC
= +5.5V,
V
EE
= -5.5V
I
IL
Logic Low Input Current
-4mA max @ V
IL
= 0.4V, V
CC
= +5.5V, V
EE
= -5.5V
Aeroflex Circuit Technology
SCDCT1469 REV A 3/22/00 Plainview NY (516) 694-6700
4
RECEIVER STROBE (21)
1/
I
IH
Logic High Input Current
40A max @ V
IH
= 2.4V, V
CC
= +5.5V,
V
EE
= -5.5V
I
IL
Logic Low Input Current
-3mA max @ V
IL
= 0.4V, V
CC
= +5.5V,
V
EE
= -5.5V
Power Supply Currents
STANDBY
I
CC
V
CC
= +5.5V, V
EE
= -5.5V,
V
23
= GND, V
26
= -V
EE
90mA max
I
EE
70mA max
100% Transmission
I
CC
V
CC
= +5.5V, V
EE
= -5.5V,
V
23
= 2.4V min, f
IN
= 10MH
Z
150mA max
I
EE
125mA max
Notes:
1/ Maximum total capacitance loads allowable on these pins are:
Transmitter Timing Characteristics
(V
CC
= 5V 10%, V
EE
= -5V 10%, T
C
= -55 C to +100C, See Figure 2 and 3, unless otherwise specified)
Symbol
Parameter / Condition
Min
Max
Unit
V
A
Output amplitude
1
0.45
0.8
V
T
Pulse period
97
103
nsec
T
S
Width of 1
ST
positive half bit
45
65
nsec
T
E
Width of last half bit
47
65
nsec
T/2
Half pulse period
47
53
nsec
T
R
Pulse rise time
0.05
0.3
V/nsec
T
F
Pulse fall time
0.05
0.3
V/nsec
DC Electrical Characteristics (con't)
(V
CC
= 5V 10%, V
EE
= -5V 10%, T
C
= -55 C to +100C, unless otherwise specified)
SYMBOL
PARAMETER
LIMIT
DATA, DATA
10 pF max
TX INHIBIT
15 pF max
RX STROBE
45 pF max
Aeroflex Circuit Technology
SCDCT1469 REV A 3/22/00 Plainview NY (516) 694-6700
5
V
S
Voltage overshoot
-
100
mV
V
US
Voltage undershoot
-
100
mV
T
OS
Offset Voltage 2T after last zero crossing
-
30
mV
T
DTX
Delay from data input to transformer secondary
-
50
nsec
V
N
Transmitter noise output with transmitter inhibited
-
35
mV
Zo
Output impedance
45
55
Inhibit
External-TTL low inhibits outputs
Internal-Equal input signals inhibit output
1. Pins 25 and 27 are not used for MIL-STD-1397 Type E nominal output signal levels.
Receiver Timing Characteristics
(V
CC
= 5V 10%, V
EE
= -5V 10%, T
C
= -55 C to +100C, See Figure 4, unless otherwise specified)
Symbol
Parameter / Condition
Min
Max
Unit
V
IN
Input signal to receiver
0.22
0.88
V
PK
V
CM
Common Mode Rejection
DC to 1.0MHz
2.0MHZ to 20MHz
-
-
20
5
V
PK
-
TO
-
PK
V
PK
-
TO
-
PK
V
T
Signal rejection
No response to single ended signals
-
-
10
-9
0.13
Volts-Seconds
V
PK
T
D
1
Delay from 50% point of positive input
signal to 50% point of data output
-
30
nsec
T
D
2
Delay from 50% point of negative input
signal to 50% point of data output
-
30
nsec
V
O
Output signal
Complementary TTL drive capability
of 2 TTL Loads
High
Low
2.4
-
-
0.4
V
V
T
RSU
To input data, setup time Receiver Strobe
Enable
5
-
nsec
T
RSH
Receiver Strobe hold time
20
-
nsec
Strobe
Strobe Forces outputs low, logic low
inhibits reception
Transmitter Timing Characteristics (con't)
(V
CC
= 5V 10%, V
EE
= -5V 10%, T
C
= -55 C to +100C, See Figure 2 and 3, unless otherwise specified)
Symbol
Parameter / Condition
Min
Max
Unit
Aeroflex Circuit Technology
SCDCT1469 REV A 3/22/00 Plainview NY (516) 694-6700
6
Output Function Table
D
D
TX INH
OUTPUT
D = D
D = D
X
Inactive
X
X
0
Inactive
Active
Active
1
Active
Aeroflex Circuit Technology
SCDCT1469 REV A 3/22/00 Plainview NY (516) 694-6700
7
TX Output
TX Data Input
TX Inhibit
TX Data Input
V
A
V
S
P
H
P
P
T
DTX
90%
90%
V
US
T
T/2
50%
10%
T
S
T
R
T
F
10%
T
OS
T
2T
T
E
TX Input Requirements
T
RISE
, T
FALL
< 5 nsec
P = 100 2 nsec
P
H
= 50 2 nsec
Figure 2 Transmitter Logic Waveforms
100 3nsec
50 3nsec
Shaded Area is acceptable region of operation
V
A
Max
0.30
0.3 V/nSec
-0.40
-0.45
0.05 V/nSec
V
B
Min
0.45
0.80
0
Figure 3 Transmitter Waveshape Envelope
-0.80
V
o
l
t
s
Aeroflex Circuit Technology
SCDCT1469 REV A 3/22/00 Plainview NY (516) 694-6700
8
0 V
.6 V
V
OL
V
OL
0 V
V
OH
V
OH
3 V
T
RSU
T
D
2
T
RSH
50%
50%
T
D
1
T
D
1
50%
50%
50%
+.6 V
T
D
2
Data
Output
Strobe
Data
Output
Line to
Line Input
Figure 4 Receiver Logic Waveforms
Aeroflex Circuit Technology
SCDCT1469 REV A 3/22/00 Plainview NY (516) 694-6700
9
Pin
#'s
Functions
Pin
#'s
Functions
1
Vee (-5V)
16
XFMR PRIMARY / TX DATA OUTPUT
2
NC
17
XFMR SEC
3
NC
18
XFMR SEC / RX DATA INPUT
4
NC
19
NC
5
DIGITAL GND
20
NC
6
V
CC
(+5V)
21
RECEIVER STROBE
7
RX DATA OUTPUT
22
TX DATA INPUT
8
RX DATA OUTPUT
23
TX INHIBIT
9
NC
24
TX DATA INPUT
10
NC
25
DRIVE 2
11
NC
26
POWER CONDITIONER
12
CASE GND (ANALOG)
27
DRIVE 1
13
XFMR SEC / RX DATA INPUT
28
NC
14
XFMR SEC
29
NC
15
XFMR PRIMARY / TX DATA OUTPUT
30
NC
NC = No Connection
Aeroflex Circuit Technology
SCDCT1469 REV A 3/22/00 Plainview NY (516) 694-6700
10
C I R C U I T T E C H N O L O G Y
Aeroflex Circuit Technology
35 South Service Road
Plainview New York 11803
Telephone: (516) 694-6700
FAX: (516) 694-6715
Toll Free Inquiries: 1-(800)THE-1553
Ordering Information
Model Number
Package
CT1469-2
Flat Package
.015 .003
.100 TYP
1.590 MAX
.175 MAX
Flat Package Outline
Specifications subject to change without notice.
1.400
(15 Leads / Side on .050 centers)
1.015
MAX
.010 .002
.450
MIN
Lead 1 & ESD
Designator
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