A custom monolithic integrated circuit used as a direct interface between a single-wire data link and microcomputer assemblies in the harsh automotive environment is described. Unusual circuitry allows operation from a single 5-V supply with a grounded substrate despite 6-V ground differences between the nodes. The IC features a 10-mA tristate output with a voltage swing to within 1/2 V of each rail. In addition, the output maintains the high-impedance state during loss of ground and through shorts to -16 and +16 V, remains stable for unlimited capacitive loads, and provides protection from short circuits and high-voltage transients. On-chip waveshaping referenced to an external RC time constant approximates a third-order filter for precise control of rise times and radiated noise in transmitted data. The differential receiver accepts voltage levels from -6 to +12 V and filters input signals for noise immunity. Bit rates to 9600 baud are possible in the described application.
A serial bus transceiver for the automotive environment
Ein serieller Sende-Empfangs-Bus fuer die Kraftfahrzeugelektronik
IEEE Journal of Solid-State Circuits ; 23 , 2 ; 450-456
1988
7 Seiten, 3 Quellen
Aufsatz (Zeitschrift)
Englisch
INTEGRIERTE SCHALTUNG , KUNDEN-IC , SCHNITTSTELLE , MIKRORECHNER , BUSSYSTEM , SENDE-EMPFANGS-GERAET , SERIENUEBERTRAGUNG , BIPOLARSCHALTUNG , VLSI-SCHALTUNG , ELEKTROMAGNETISCHE KOMPATIBILITAET , KRAFTFAHRZEUGELEKTRONIK , RAUSCHUNEMPFINDLICHKEIT , BIPOLARE INTEGRIERTE SCHALTUNG , KRAFTWAGEN , SPANNUNGSNIVEAU
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