Dual SPDT signal router — what it does and where it fits
The Analog Devices MAX4528CUA+ packs two independent SPDT switches into a single 8-uMAX/uSOP package, giving you a 2:1 multiplexer per channel for routing analog or digital signals. Each switch presents a maximum 110-ohm on-resistance, with channel-to-channel matching held to 3 ohms — tight enough that gain errors across paths stay small in precision circuits. Charge injection of 1pC keeps glitch energy low, which matters when the switch feeds a sample-and-hold or a high-impedance ADC input. Supply flexibility is the headline: run it from a single 2.7V to 12V rail, or split ±2.7V to ±6V for bipolar signal chains. The 0°C to 70°C temperature grade limits it to commercial equipment — office peripherals, bench instruments, audio gear, and indoor telecom line cards. Off-leakage stays under 500pA, and channel capacitance is 13pF, so it won't load down a fast op-amp output.
Package and storage — what lands on the shelf
The part ships in a Tube, not Tape & Reel, so plan for manual pick-and-place or a tube feeder if you're running high-volume assembly. The 8-uMAX/uSOP body is 3mm wide — standard MSOP-8 footprint — and it's surface-mount only. Store the reels dry if you transfer to tape; the MSOP package is moisture-sensitive, and a bake cycle before reflow costs time on the line.
Lifecycle — still a current-production part
The MAX4528CUA+ carries an Active lifecycle status, so there's no last-time-buy clock ticking. It's ROHS3 compliant, which keeps it clean for European and California-bound builds. No official successor or second-source cross-reference is listed, but the part is widely stocked across independent distribution.