MIL-STD-1553 Bus

Interface Standard for Digital Time Division Command/Response Multiplex Data Bus

[MIL1553 Description] [OnLine Standards]
[MIL-1553 Interface ICs] [MIL-1553 Connectors]
[Converters, Adapters, Cable Assemblies]
[OEM MIL-STD-1553 Cards]

MIL-STD-1553 Bus Description

MIL-STD-1553 is a DOD Military (MIL) Standard (STD), which defines both the Mechanical, Electrical, and Functional characteristics. MIL 1553 uses a Balanced (Differential) interface. The interface is dual redundant with between 2 and 32 interface devices on the bus.

The multiplex data bus system shall function asynchronously in a command /response mode, and transmission shall occur in a half-duplex manner.
The information flow on the data bus shall be comprised of messages which are, in turn, formed by three types of words (command, data, and status).
The most significant bit shall be transmitted first with the least significant bits following in descending order of value in the data word.
The data code shall be Manchester II bi-phase level. A logic one shall be transmitted as a bipolar coded signal 1/0 (i.e., a positive pulse followed by a negative pulse). A logic zero shall be a bipolar coded signal 0/1 (i.e., a negative pulse followed by a positive pulse). A transition through zero occurs at the midpoint of each bit time..
The transmission bit rate on the bus shall be 1.0 megabit per second with a combined accuracy and long-term stability of ± 0.1 percent (i.e., ±1000 hertz (Hz)).
The word size shall be 16 bits plus the sync waveform and the parity bit for a total of 20 bits times..
The nominal characteristic impedance of the 1553 cable (Z0) shall be within the range of 70.0 ohms to 85.0 ohms at a sinusoidal frequency of 1.0 megahertz (MHz). The Mil-1553 interface may be Transformer coupled [Schematic Diagram].

MIL-1553 Interface ICs

IC Vendors;
Aeroflex {MIL-STD-1553 Controller/Transceiver ICs, Single/Dual Channel}

C-MAC MicroTechnology {MIL-STD-1553-Transceiver ICs; Microcircuit, Digital, Single Channel/Dual Channel Driver/Receiver, Hybrid}

Data Device Corp. {MIL-STD-1553-Transceiver ICs; MIL-STD-1553A and 1553B}

Holt Integrated Circuits Inc. {Monolithic Dual 5V Transceivers, Dual 3.3V Smart Transceivers, MIL-STD-1553 Databus Interface Transformers}

National Hybrid Inc. {1553 Transceiver,Dual}

Federal stock class designator:
DOD Drawing Number: 5962-89577; Microcircuit, Digital, CMOS, 1553 Bus Controller, Remote Terminal and Monitor, Monolithic Silicon
DOD Drawing Number: 5962-89798; Microcircuit, Hybrid, Linear, Dual Redundant Remote Terminal Unit [RTU], [Generic; BU-65142X1]
DOD Drawing Number: 5962-90636; MIL-STD-1553 data terminal bit processor
DOD Drawing Number: 5962-91687; Digital MIL-STD-1553 Mux Bus Remote Terminal, [Generic number; NHI-1553RT]
DOD Drawing Number: 5962-92118; MIL-STD-1553 Serial Microcoded Multi-Mode Intelligent Terminal, [Generic number; UT69151]
DOD Drawing Number: 5962-92162; Dual Redundant, Remote Terminal, Bus Interface Unit [Generic number; BUS-63153]
DOD Drawing Number: 5962-92304; MIL-STD-1553 Mux Bus Remote Terminal, Hybrid
DOD Drawing Number: 5962-93065; MIL-STD-1553, BC/RTU/MT, Multiplexed Terminal [Generic part number; numerous]
DOD Drawing Number: 5962-95539; MIL-STD-1553/1760, Protocol, Dual Redundant, Remote Terminal Unit, +5 Volt Supply [Generic part; RTM1760, RTS1760]
DOD Drawing Number: 5962-95558; MIL-STD-1553 Mux Bus, Bus Controller, Remote Terminal, Bus Monitor, 16K SRAM [Generic part; NHI-1582ET]
DOD Drawing Number: 5962-96887; MIL-STD-1553, BC/RT/MT, Multiplexed Terminal 32K RAM [Generic part; BU61582X1]
Editor note; In some cases the terms Microcircuit, Hybrid, Linear, have been omitted from the title because there redundant. Not all part numbers provided.

IC Manufacturers {All other types}

{MIL-STD-1553 Bus Index}

MIL-STD-1553 Standard/Specifications

MIL-STD-1553 {stinet} ~ [Military-Standard-1553b]
MIL-STD-1773 - Fiber Optics mechanization of an Aircraft Internal Time Division Command/response Multiplex Data Bus
MIL-HDBK-1553A - Multiplex Applications Handbook
MIL-STD-1760C - Interface Standard for Aircraft/Store Electrical Interconnection System
MIL-STD-1397C - Input/Output Interfaces, Standards Digital data, Navy Systems
MIL-STD-1397 {NTDS} ~ [Description of the Bus]
SAE AS6003/1 - MIL-1553 Deterministic TTP Databus Standard [Time Triggered Protocol]

NATO calls MIL-STD-1553B: STANAG 3838AVS;, the UK calls it DEF STAN 00-18.
MIL-STD-1553 is now controlled by the SAE as AS15531, and re-released by NATO as STANAG 7155.
STANAG 3910; A derivation of MIL-1553 (like MIL-1773 ?) used in NATO / UK.
STANAG 3910 operates at 100Mb/s over a fiber interface.
ARINC 629; Another derivation of MIL-1553 used by commercial aircraft. Yet another was ARINC 453.
MMSI: Miniature Mission Stores Interface. 2-wire, 10Mbps 1553 protocol transmitted using RS-485 transceiver(s). Also called Enhanced Bit Rate 1553 (EBR-1553). MMSI / EBR
SAE AS5652; 10Mbps, Multi-drop [Enhanced Bit Rate]
Enhanced Bit Rate-1553 uses the MIL-STD-1553 protocol, but not the same wiring.
Extended 1553; Backward compatible, coexisting with legacy 1553 products.
HyPer 1553; 100 Mbits/s while coexisting with legacy 1553 products.

MIL-STD-1553 System Block Diagram
MIL-STD-1553 System Block Diagram

{MIL-STD-1553 Aircraft Bus Index}

MIL-1553 Connector Vendors

MlL-STD-1553B does not specify the type of connector used to interconnect cables that make up a network.
Notice 2, paragraph 30.10.3, however, specifies that, for applications that use concentric connectors or inserts for each bus [Pin Out info]:
the center pin of the connector or insert shall be used for the high (positive) Manchester hi-phase signal.
The inner ring shall be used for the low (negative) Manchester hi-phase signal.
There are currently two types of connectors in general use.
1: a multi-pin connector that comes in various styles including circular, rectangular, and rack and panel.
2: is the discrete concentric triaxial design.

Connector Manufacturers;
Adam Technologies Inc.
Methode Electronics, Inc.
MilesTek Inc.
Tyco Electronics

Twinax Drawing Military Specification (MIL Spec)
Connector Manufacturers {All other types}

U.S. Air Force F-16 Fighting Falcon aircraft
F-16 Fighting Falcon

The MIL-STD-1553 interface is used in both fighter aircraft, bombers and support aircraft.
US Air Force [USAF] examples; F-15, F-16, F/A-18, A-10, F-35, B1, B2, B52, C-5, C-17, C-130, V-22
MIL-DTL-83538 Environment Resistant Circular Electrical Connectors and Accessories, Umbilical, Removable Crimp Contacts for MIL-STD-1760 Applications

U.S. Air Force C-5 Galaxy transport aircraft
USAF C-5 Cockpit

F-15 Eagle [F-15E Strike Eagle], Fighter.
F-16 Fighting Falcon, Fighter.
F/A-18 Hornet [F/A-18E/F Super Hornet], Fighter/Attack.
A-10 Thunderbolt [Warthog], close air support.
F-35 Lightning [Joint Strike Fighter], Fighter.
B-2 Spirit [Stealth Bomber], bomber.
B-52 Stratofortress, bomber.
B-1B [Lancer], bomber.
C-5 [Galaxy], transport.
C-17 [Globemaster], transport.
C-130 [Hercules], transport.
V-22 [Osprey], multi-mission.

The Airbus A350 is implementing AS15531.

{MIL-STD-1553 Avionics Interface Bus Index}

PC motherboard

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Modified 2/25/12
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