CT1990/1 Series
MIL-STD-1553B Remote Terminal, Bus Controller,
or Passive Monitor Hybrid with Status Word Control
Features
• Performs the Complete Dual-Redundant Remote Terminal, Bus Controller Protocol
and Passive Monitor Functions of MIL-STD-1553B
• Automated Self-Test Functions
• Allows setting of the Message Error Bit on illegal commands
• Provides programmable control over Terminal Flag and Subsystem Flag Status Bits
• MIL-PRF-38534 Compliant Circuits Available
• 50 mw Typical Power Consumption
• Small Size
• Available in Ceramic Plug-in Package Configuration
CIRCUIT TECHNOLOGY
• Compatible with all ACT Driver/Receiver Units
• 5V DC Operation
• Full Military (-55°C to +125°C) Temperature Range
• DESC SMD# 5962–94775: Released CT1990, Pending CT1991
1
General Description
The CT1990/1 Series is a monolithic implementation of the MIL-STD-1553B Bus Controller, Remote
Terminal and Passive Monitor functions. All protocol functions of MIL-STD-1553B are incorporated and a
number of options are included to improve flexibility. These features include programming of the status
word, illegalizing specific commands and an independent loop back self-test which is initiated by the
subsystem. This unit is directly compatible with all transceivers and microprocessor interfaces such as the
CT1611 and CT1800 produced by Aeroflex Incorporated.
Block Diagram (With Transformers)
Encoder
Interface
Unit
Sub Address
&
Word Count
Outputs
BUS "0"
T/R
Hybrid
Driver
Select
&
Enable
T/R
Hybrid
Decoder
"O"
Status
Word
Control
Program
Inputs
Discrete
Outputs
BUS "1"
Decoder
"1"
Internal
Highway
Control
Control
Inputs
Terminal
Address
Inputs
CT1990/1
eroflex Circuit T
echnology
– Data Bus Modules For The Future © SCD1990 REV B 8/21/00
AEROFLEX [ AEROFLEX CIRCUIT TECHNOLOGY ]
