1 Features
• Wide supply voltage range:
– Single supply: 8 V to 44 V
– Dual supply: ±5 V to ±22 V
• Integrated fault protection:
– Overvoltage protection, source to supplies or
source to drain: ±85 V
– Overvoltage protection: ±60 V
– Powered-off protection: ±60 V
– Interrupt flags to indicate fault status
– Output open circuited during fault
• Latch-up immunity by device construction
• 6 kV human body model (HBM) ESD rating
• Low On-Resistance: 8.3 Ω typical
• Flat On-Resistance: 10 mΩ typical
• 1.8-V Logic capable
• Failsafe logic: up to 44 V independent of supply
• Industry-standard TSSOP and smaller WQFN
packages

2 Applications
• Factory automation and control
• Programmable logic controllers (PLC)
• Analog input modules
• Semiconductor test equipment
• Battery test equipment
• Servo drive control module
• Data acquisition systems (DAQ)

3 Description
The TMUX7436F is a complementary metal-oxide
semiconductor (CMOS) analog multiplexer with latchup
immunity in a dual channel, 2:1 configuration. The
device works well with dual supplies (±5 V to ±22 V),
a single supply (8 V to 44 V), or asymmetric supplies
(such as VDD = 12 V, VSS = –5 V). The overvoltage
protection is available in powered and powered-off
conditions, making the TMUX7436F device suitable
for applications where power supply sequencing
cannot be precisely controlled.
The device blocks fault voltages up to +60 V or
−60 V relative to ground in powered and powered-off
conditions. When no power supplies are present, the
switch channels remain in the OFF state regardless of
switch input conditions, and any control signal present
on the logic pins is ignored. If the signal path input
voltage on any Sx pin exceeds the supply voltage
(VDD or VSS) by a threshold voltage (VT), then the
channel turns OFF and the Sx pin becomes high
impedance. The drain pin (Dx) is either pulled to the
fault supply voltage that was exceeded or left floating
depending on the DR control logic. The TMUX7436F
device provides two active-low interrupt flags (FF and
SF) to provide details of the fault and help system
diagnostics. The FF flag indicates if any of the source
inputs are experiencing a fault condition, while the
SF flag is used to decode which specific inputs are
experiencing a fault condition.