MIL-STD-1553 Bus

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

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

MIL-STD-1553 Schematic Diagram

MIL-STD-1553 is a DOD Military (MIL) Standard (STD), which defines both the Mechanical, Electrical, and Functional characteristics.
MIL-1553 may be transformer coupled. The schematic shows how different devices on the MIL-STD-1553 interface bus are connected.
Note the Isolation Resistors used on each leg of the coupling transformer, which feeds the isolation transformer.

MIL-1553 Transformer Coupled bus
MIL-STD-1553 Interface Schematic

MIL-1553 uses low power pulse transformers per MIL-PRF-21038.
Which defines a number of transformer styles, windings, taps and [through-hole] packages.
The transformer shown here has a 1-to-1 turns ratio and no voltage taps.
Note all slash sheets but /27 & /28 have been cancelled without replacement.

Component Vendors; Manufacturers of Transformers

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.

Twinax Drawing (MIL Spec), Bulk-Head

Twinx Connector Manufacturers

Connector Manufacturers {All other types}

MIL-STD-1553 Standard/Specifications

MIL-STD-1553 ~ [Military-Standard-1553b, version B was the last revision]
MIL-STD-1773 - Fiber Optics mechanization of an Aircraft Internal Time Division Command/response Multiplex Data Bus
MIL-STD-1397C - Input/Output Interfaces, Standards Digital data, Navy Systems
MIL-STD-1397 {NTDS}, providing a description of the Bus]
MIL-HDBK-1553 - Multiplex Applications Handbook [A how to]
MIL-STD-1760C - Interface Standard for Aircraft/Store Electrical Interconnection System

Related Versions;
DEF STAN 00-18 [UK DOD MIL-STD-1553].
AS15531 [SAE MIL-STD-1553]
STANAG 7155 [NATO, MIL-STD-1553].
STANAG 3910; A derivation of MIL-1553 used in NATO and the UK. Operates at 100Mb/s over fiber.
ARINC 629; Another derivation of MIL-1553 used by commercial aircraft. Yet another was ARINC 453.

ARINC: Aeronautical Radio, Incorporated
DEF STAN: Defense Standard [U.K. document]
DOD: Department of Defense [U.S.]
HDBK: Handbook [application note or how-to guide]
MIL: Military [any service]
NATO: North Atlantic Treaty Organization
STANAG: Standard Agreement [NATO document]
STD: Standard [document or specification]
UK: United Kingdom
Pulse Transformer Definition.

Output from a pulse transformer with a square wave applied to the input
Example Pulse Output Waveform

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Modified 1/25/12
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