54LS257ALMQB National Semiconductor

Description: MULTIPLEXER, LS SERIES, Part Status: Active, Supplier Device Package: 20-LCCC (8.89x8.89), Voltage Supply Source: Single Supply, Current - Output High, Low: 1mA, 12mA, Independent Circuits: 1, Voltage - Supply: 4.5V ~ 5.5V, Operating Temperature: -55°C ~ 125°C, Type: Data Selector/Multiplexer, Circuit: 4 x 2:1, Mounting Type: Surface Mount, Package / Case: 20-CLCC, Packaging: Bulk.