The HX4004 and PS3120A are the primary cross-references for this marking.
: The "danger zone." Never exceed these voltages or temperatures, or the chip may be destroyed. hxje ic datasheet top
: If possible, compare the product with similar ICs from competitors. How does it stack up in terms of performance, price, and features? The HX4004 and PS3120A are the primary cross-references
Using a digital multimeter (DMM) to find which pins tie directly to the ground plane and which tie to bulk voltage inputs significantly narrows down the pinout possibilities. hxje ic datasheet top