Description
The Radiation Hardened ACS257MS is a Quad 2-Channel multiplexer which selects four bits of data from one of two sources under the control of a single select pin. The Output Enable input is active LOW and controls all outputs. When OE is set HIGH, all outputs are configured into a high impedance state, regardless of all other input conditions. All inputs are buffered and the outputs are designed for balanced propagation delay and transition times.

Features
• QML Qualified Per MIL-PRF-38535 Requirements
• 1.25Micron Radiation Hardened SOS CMOS
• Radiation Environment
    - Latch-up Free Under any Conditions
    - Total Dose . . . . . . . . . . . . . . . . . . . . . . 3 x 105 RAD(Si)
    - SEU Immunity . . . . . . . . . . . <1 x 10-10 Errors/Bit/Day
    - SEU LET Threshold . . . . . . . . . . . >100MeV/(mg/cm2)
• Input Logic Levels . . .VIL = (0.3)(VCC), VIH = (0.7)(VCC)
• Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±8mA
• Quiescent Supply Current. . . . . . . . . . . . . . . . . . .400µA
• Propagation Delay
    - Enable to Output . . . . . . . . . . . . . . . . . . . . . . . . . 13ns
    - Input or Address to Output . . . . . . . . . . . . . . . . . 14ns

Applications
• 4-Bit Source Selection
• Data Routing
• High Frequency Switching