Active lifecycle — still a current production line item
The MAX9716EUA+T: ROHS3 compliant per the latest directive, which covers the full bill of materials including the exposed-pad leadframe.
1.4W mono Class AB — what the output rating means for the BOM
Rated 1.4W continuous into a 4Ω load from a single 5V supply — this is the maximum output before clipping at 1% THD+N. For a battery-powered portable speaker running at 3.7V, expect roughly 0.7W into 4Ω, which still drives an ear-bud or small enclosure to adequate SPL. Class AB topology means the output stage biases into conduction across the full signal swing, avoiding the crossover notch distortion typical of Class B. The trade-off is lower efficiency than Class D — expect around 60-65% at full power — so the 8-uMAX-EP package with exposed pad is sized to sink the heat.
Package and thermal — 8-uMAX-EP with exposed pad
The 8-uMAX-EP (also marked as 8-uSOP-EP) is a 3.00 mm-wide MSOP derivative with an exposed metal paddle on the bottom.
Industrial temperature range and feature set
The shutdown pin (active-low) drops quiescent current to under 0.1 µA, preserving battery life in intermittently-used equipment. Differential inputs reject common-mode noise from long input traces, and the depop circuit suppresses the turn-on thump that would otherwise couple into the speaker. Thermal protection folds back the output current if the die temperature exceeds 150°C, preventing latch-up or damage under a shorted load.