Description
The Radiation Hardened ACS157MS is a Quad 2-Channel
Non-Inverting 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 E is set HIGH, all outputs are forced LOW,
regardless of all other input conditions. All inputs are buffered and the outputs are designed for balanced propagation
delay and transition times.
The ACS157MS is fabricated on a CMOS Silicon on Sapphire (SOS) process, which provides an immunity to Single
Event Latch-up and the capability of highly reliable performance in any radiation environment. These devices offer
significant power reduction and faster performance when
compared to ALSTTL types.
Specifications for Rad Hard QML devices are controlled
by the Defense Supply Center in Columbus (DSCC). The
SMD numbers listed below must be used when ordering.
Detailed Electrical Specifications for the ACS157 are
contained in SMD 5962-98536. A “hot-link” is provided
on our homepage with instructions for downloading.
http://www.intersil.com/data/sm/index.htm

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±12mA
• Quiescent Supply Current. . . . . . . . . . . . . . . . . . . .20µA
• Propagation Delay . . . . . . . . . . . . . . . . . . . . . . . . . . 14ns

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