If you are looking for the "NEC B58944 datasheet," you are likely trying to save a car from the scrap heap. In the world of automotive electronics, this chip represents the thin line between a $20 repair $2,000 ECU replacement
Do not assume a generic substitute without the real datasheet. NEC parts often have unique switching speeds, gain bandwidths, or isolation voltages. If you need help, reply with a clear photo of the component and the device it came from (e.g., "Sony radio model XR-C5100").
: The "-70" suffix typically denotes an access time of 70 nanoseconds , meeting the high-speed requirements of automotive real-time processing.
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Monitoring battery pack temperatures to prevent over-heating during charging or discharging.
Typically rated at 70ns (indicated by the "-70" suffix). Manufacturer: NEC Electronics (now Renesas). Automotive Applications
Have you encountered the NEC B58944 in a device? Contribute your findings to the comments section or contact the author for inclusion in future updates to this datasheet guide. If you are looking for the "NEC B58944
It is most notably found in the following Bosch ECU families:
The B58944 is a frequent "point of failure" in aging automotive hardware. Because it handles critical data streams within the ECU, a malfunction can lead to severe engine performance issues, "no-start" conditions, or communication errors with diagnostic tools.
The exact pulled from your diagnostic scan tool. If you need help, reply with a clear
Typically 70ns (indicated by the "-70Y" suffix) Key Applications in Automotive Systems
For those looking to purchase or find detailed pinouts, parts are often listed on specialized sites like Jotrin Electronics new circuit design
The primary direct equivalent is the , with other -LL (very low power) versions like the UPD43256BGU-70LL also potentially compatible depending on power requirements.
The NEC B58944 operates as a multi-channel driver or specialized application-specific integrated circuit (ASIC). While standard commercial components carry generic alphanumeric naming conventions, parts prefixed with proprietary designations like "B58944" are typically customized for tier-1 automotive suppliers. Characteristic Value / Standard Target NEC Electronics (Renesas) Package Type SOP-28 (Small Outline Package, 28-Lead) Primary Application
Always use a gate resistor to dampen oscillations and protect against voltage spikes.