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A dual-ended (??seesaw??) relay design is proposed for ultralow-power digital logic applications. Fabricated seesaw relays demonstrate a perfectly complementary switching behavior that is symmetric about V DD/2, with extremely steep switching behavior (< 0.1 mV/dec) and low on -state resistance (< 1 k??). The perfectly complementary and symmetric operation provides for maximum operating voltage margin and minimal crowbar current, as evidenced by an abrupt inverter voltage transfer characteristic.