Features
• Devices QML Qualified in Accordance with MIL-PRF-38535
• Detailed Electrical and Screening Requirements are
Contained in SMD# 5962-96716 and Intersil’s QM Plan
• 1.25 Micron Radiation Hardened SOS CMOS
• Total Dose >300K RAD (Si)
• Single Event Upset (SEU) Immunity: <1 x 10-10 Errors/
Bit/Day (Typ)
• SEU LET Threshold>100 MEV-cm2/mg
• Dose Rate Upset>1011 RAD (Si)/s, 20ns Pulse
• Dose Rate Survivability>1012 RAD (Si)/s, 20ns Pulse
• Latch-Up Free Under Any Conditions
• Military Temperature Range-55oC to +125oC
• Significant Power Reduction Compared to ALSTTL Logic
• DC Operating Voltage Range 4.5V to 5.5V
• Input Logic Levels
- VIL = 0.8V Max
- VIH = VCC/2 Min
• Input Current  1A at VOL, VOH
• Fast Propagation Delay25ns (Max), 16ns (Typ)

Description
The Intersil ACTS161MS is a Radiation Hardened 4-Bit Binary Synchronous Counter, featuring asynchronous reset and load ahead
carry logic. The MR is an active low master reset. SPE is an active
low Synchronous Parallel Enable which disables counting and
allows data at the preset inputs (P0 - P3) to load the counter. CP is
the positive edge clock. TC is the terminal count or carry output.
Both TE and PE must be high for counting to occur, but are irrelevant to loading. TE low will keep TC low.
The ACTS161MS utilizes advanced CMOS/SOS technology to
achieve high-speed operation. This device is a member of a
radiation hardened, high-speed, CMOS/SOS Logic family.
The ACTS161MS is supplied in a 16 lead Ceramic Flatpack
(K suffix) or a Ceramic Dual-In-Line Package (D suffix).