1 Features
• VID V62/23607-01XE
• Radiation hardened
– Single event latch-up (SEL) immune to 43 MeVcm2/
mg at 125°C
– ELDRS free to 30krad(Si)
– Total ionizing dose (TID) RLAT for every wafer
lot up to 30krad(Si)
– TID characterized up to 30krad(Si)
– Single event transient (SET) characterized to
43 MeV-cm2 /mg
• Supply range: +8V to +22V
• Integrated powered-off and overvoltage protection
– Overvoltage and power-off-protected up to
+60V
– Cold sparing capable up to +60V
– Adjustable fault threshold threshold (VFP) from
3V to supply
– Interrupt flag feedback indicating faulted
channel
– Non-fault channels continue to operate with low
leakage currents
• Latch-up immune construction
• Precision performance with ±4.5nA source off
leakage current (max) and 4pF off-cap
• Space enhanced plastic
– Operating temperature from –55°C to +125°C
– Controlled baseline
– Gold wire and NiPdAu lead finish
– One assembly and test site
– One fabrication site
– Extended product life cycle
– Product traceability
– Enhanced mold compound for low outgassing
• Small, industry standard TSSOP-20 packaging

2 Applications
• Low earth orbit (LEO) space applications
• Remote interface unit (RIU)
• Remote telemetry unit (RTU)
• System monitoring for space
• Latch-up and overvoltage detection
• Power-up sequencing protection
• Satellite telemetry and telecommand for on board
data handling
• Sensor data acquisition

3 Description
The TMUX582F-SEP is a modern 8:1 multiplexer
suitable for single ended operation. This latch-up
immune device offers robust overvoltage protection
up to +60V making it optimal for harsh space
environments. Additionally, this protection operates
in powered-on, powered-off, and floating supply
conditions.
During a fault such as an overvoltage or undervoltage
event, the offending channel turns OFF and the Sx
pin becomes high impedance. If this fault channel is
selected, the drain (D) is pulled to the fault rail that
is exceeded (Vfp or Vfn). All other Sx pins which
are not under fault continue to operate normally.
During normal operation, when the source (Sx) does
not exceed Vfp or Vfn, the switch operates with
low leakage, low capacitance and an ultra-flat onresistance.
This provides high performance signal
integrity with minimal distortion.
The TMUX582F-SEP is a fault protected CMOS
multiplexer flexible enough to handle almost any
application, from system monitoring, to power-up
sequencing protection, to high precision front end
data acquisition.