): Optimized for small-signal processing rather than power regulation. Transition Frequency ( fTf sub cap T
The NEC B58944 is more than just a part number; it is a vital link in the chain of automotive reliability. As a 256K SRAM chip housed in a compact SOP-28 package, it provides the low-latency memory environment necessary for modern engines to run efficiently. For engineers and technicians, identifying its relationship to the series is the key to sourcing the correct datasheet and ensuring successful hardware diagnostics. NEC B58944 ECU DRIVER SOP-28 - Inovauto.com NEC B58944 ECU DRIVER SOP-28. Inovauto.com NEC B58944 D43256BGU-70Y BOSCH Auto ECU computer IC
* VOLVO XC70 2.4 D 185CV EDC16C31 0281012103 1037375898 1037400254 Cks_7D2A. * VOLVO XC90 2.4D 163CV EDC15C11 3067014741 Cks_B157. Inovauto.com B58944 NEC Integrated Circuits (ICs) - Jotrin Electronics nec b58944 datasheet
What is the of the vehicle you are servicing?
– Many NEC monitors (e.g., Multisync series) used 7-pin SIP ICs for H-out or V-out pre-drivers. The B58944 could be a replacement for defective vertical output ICs like LA7830 or TDA1170. ): Optimized for small-signal processing rather than power
RDS(on)cap R sub cap D cap S open paren o n close paren end-sub ): Extremely low (typically < 10mΩ) Gate-Source Threshold Voltage (
) : -40°C to +85°C (Standard industrial/automotive lower-tier threshold) : -65°C to +150°C Timing and Truth Table Operation * VOLVO XC90 2
: Standard SOP-28 (Small Outline Package, 28 pins). Mounting Type : Surface Mount Technology (SMT / SMD).
No publicly accessible datasheet for exists in major technical databases as of this report. The part is likely a custom or obsolete component intended for a specific application. Users are advised to trace the circuit, analyze the component’s markings in full, or contact Renesas support with the application context.
The NEC B58944's main role is in a car's ECU, where it likely serves as a data buffer or scratchpad. Its core function is to manage and act as a Double Channel Solid-State Relay (IC Relay) —these are electronically controlled switches that turn power on and off to various automotive systems on the "high side" (the +12V side) of the load. The table below lists known ECUs.