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.