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MA28139 - OBDH Bus Terminal

Datasheet Summary

Description

In RT mode, power up resets the OBT and causes it to deselect both busses.

Two watchdog counters monitor the Nominal l-bus and the Redundant l-bus.

If either bus becomes active, that bus will be selected.

Features

  • s Radiation Hard s Low Power Consumption s Single CMOS-SOS ASIC Implementation s Latch-up Free s High SEU Immunity s Fully Compliant with ESA OBDH, IUB, DBI and RBI Specification s Contains OBDH Bus Modem and RTU Kernel s Supports Bi-directional Data Transfer on Response and Block Transfer Bus.

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Datasheet Details

Part number MA28139
Manufacturer Dynex
File Size 416.43 KB
Description OBDH Bus Terminal
Datasheet download datasheet MA28139 Datasheet
Additional preview pages of the MA28139 datasheet.

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Full PDF Text Transcription

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MA28139 MA28139 OBDH Bus Terminal Replaces June 1999 version, DS3592-5.0 DS3592-6.0 January 2000 The OBT ASIC will interface any user to the ESA On Board Data Handling bus. Developed under ESA Contract, it conforms to ESA OBDH, Digital Bus Interface and Internal User Bus Standards. The OBT has 2 separate functions. The first is a 5 channel modem which, on the bus side, provides the digital waveforms necessary to operate the Litton Bus drivers, and receives the outputs of the Litton bus detectors. On the user side, it provides an input / output at Digital Bus Interface level.
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