-70Y (Indicating a 70-nanosecond random access time).
The NEC B58944 proved that in the fast-paced world of tech, sometimes the most important innovation isn't the newest chip, but the documentation that keeps the old ones running. nec b58944 datasheet 2021
Built-in clamp diodes safely absorb back-EMF spikes generated when switching off inductive coils (like fuel injector solenoids). -70Y (Indicating a 70-nanosecond random access time)
Thermal Shutdown, Over-Current Protection, Transient Clamping 2. Pinout Configuration and SOP-28 Architecture nec b58944 datasheet 2021
Because this IC is an OEM proprietary-masked part, tracking its datasheet parameters requires looking at its cross-referenced semiconductor siblings: