ACT CT1469-2 Datasheet
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CT1469-2
MIL-STD-1397 Type E 10MHz Transceiver
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
ISO
900
I
1
TX Data Input
TX Inhibit
TX Data
Input
+5V
Drive 1
-5V
Receiver
Strobe
Digital and Analog
Gnd
Power
Linear
Amp
Linear
Amp
Conditioner
Drive 2
Figure 1 – Block Diagram
Level
Detector
Level
Detector
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
eroflex Circuit Technology – Data Bus Modules For The Future © SCDCT1469 REV A 3/22/00
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
2
Absolute Maximum Ratings
Parameter Rating Units
Supply Voltage
Vcc
V
EE
Input Voltage
Digital V
Receiver V
IN(D)
IN(R)
+0.5 to +7.0
-0.5 to -7.0
-0.5 to +5.5
±2
V
V
V
V
Power Dissipation P
Storage Temperature Range T
Operating Case Temperature Range T
D 2.0 W
STG -60 to +150 °C
C -55 to +100 °C
DC Electrical Characteristics
(VCC = 5V ±10%, VEE = -5V ±10%, TC = -55 °C to +100°C, unless otherwise specified)
SYMBOL PARAMETER LIMIT
RX DATA (7), RX DATA
V
OH Logic High Output Voltage 2.4V min @ IOH = -80µA, VCC = +4.5V,
V
OL Logic Low Output Voltage 0.4V max @ IOL = 3.2mA, VCC = +4.5V,
(8)
V
EE = -4.5V
V
EE = -4.5V
TX DATA INPUT (22), TX DATA
INPUT (24) 1/
IIH Logic High Input Current 50µA max @ VIH = 2.4V, VCC = +5.5V, VEE
= -5.5V
I
IL Logic Low Input Current -2mA max @ VIL = 0.4V, VCC = +5.5V, VEE
= -5.5V
TX INHIBIT
INPUT (23) 1/
IIH Logic High Input Current 100µA max @ VIH = 2.4V, VCC = +5.5V,
V
EE = -5.5V
I
IL Logic Low Input Current -4mA max @ VIL = 0.4V, VCC = +5.5V, VEE
= -5.5V
Aeroflex Circuit Technology SCDCT1469 REV A 3/22/00 Plainview NY (516) 694-6700
3
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