TMUX730xF ±60-V Fault-Protected, 8:1 and Dual 4:1 Multiplexers with 1.8-V Logic

1 Features

• Wide supply range:

– Dual supply: ±5 V to ±22 V

– Single supply: 8 V to 44 V

• Integrated fault protection:

– Overvoltage protection,

source to supplies or to Ddrain: ±85 V

– Overvoltage protection: ±60 V

– Powered-off protection: ±60 V

– Non-fault channels continue to operate with low

leakage currents

– Known state without digital inputs present

– Output clamped to the supply in overvoltage

condition

• Latch-up immunity by device construction

• Break-before-make switching action

• 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)

SW

SW

S1

S2

D

TMUX7308F

SW

S8

Fault Detection/

Switch Driver/

Logic Decoder

A1

A2

A3

EN

SW

SW

S1A

DA

TMUX7309F

Fault Detection/

Switch Driver/

Logic Decoder

A1

A2

EN

S4A

SW

SW

S1B

DB

S4B

Simplified Schematic

3 Description

The TMUX7308F and TMUX7309F are modern

complementary metal-oxide semiconductor (CMOS)

analog multiplexers in 8:1 (single ended) and 4:1

(differential) configurations. The devices work well

with dual supplies (±5 V to ±22 V), a single supply

(8 V to 44 V), or asymmetric supplies. All control

inputs support logic levels from 1.8 V to 44 V, enabling

system level flexibility for controlling the multiplexer.

When no power supplies are present, the switch

channels remain in the OFF state regardless of

switch input conditions and logic control status. Under

normal operation conditions, if the analog input signal

OFF and the Sx pin becomes high impedance. When

the fault channel is selected, the drain pin (D or Dx) is

The device blocks fault voltage up to +60 V or –60

V relative to ground in both powered and powered-off

conditions.

The low capacitance, low charge injection, and

integrated fault protection enable the TMUX7308F

and TMUX7309F devices to be used in front end

data acquisition applications where high performance

and high robustness are both critical. The devices are

available in a standard TSSOP package and smaller

WQFN package (ideal if PCB space is limited).

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TMUX7308F

TMUX7309F

TSSOP (16)

5.00 mm × 4.40 mm

WQFN (16)

4.00 mm × 4.00 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

TMUX7308F

SCDS403A – FEBRUARY 2021 – REVISED OCTOBER 2021

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change

without notice.