System Inputs &

Sensors

LDO #1

D

S1

S2

S3

S4

S5

S6

S7

S8

Integrated

12-bit ADC

A0

A1

A2

EN

MCU

LDO #2

LM20

Analog Temp.

Sensor

LM20

Analog Temp.

Sensor

GND

VDD

VDD

VDD

VI/O

1.8V Logic

I/O

LM20

Analog Temp.

Sensor

LDO #3

RAM

FLASH

Port I/O

TIMERS

TMUX120 8

A0

A1

A2

EN

S1

D

S2

S3

S4

S5

S6

S7

S8

1-OF-8

DECODER

TMUX120 9

S1A

DB

S2A

S3A

S4A

S1B

S2B

S3B

S4B

DA

A0

A1

EN

1-OF-4

DECODER

Product

Folder

Order

Now

Technical

Documents

Tools &

Software

Support &

Community

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. PRODUCTION DATA.

TMUX1208, TMUX1209

SCDS389C – AUGUST 2018 – REVISED DECEMBER 2018

TMUX1208 5-V Bidirectional 8:1, 1-Channel Multiplexer

TMUX1209 5-V Bidirectional 4:1, 2-Channel Multiplexer

1

1 Features

1

•

Rail to Rail Operation

•

Bidirectional Signal Path

•

Low On-Resistance: 5 Ω

•

Wide Supply Range: 1.08 V to 5.5 V

•

-40°C to +125°C Operating Temperature

•

1.8 V Logic Compatible

•

Fail-Safe Logic

•

Low Supply Current: 10 nA

•

Transition Time: 14 ns

•

Break-Before-Make Switching

•

ESD Protection HBM: 2000 V

•

Industry-Standard TSSOP and QFN Packages

2 Applications

•

Analog and Digital Multiplexing / Demultiplexing

•

HVAC: Heating, Ventilation, and Air Conditioning

•

Smoke Detectors

•

Video Surveillance

•

Electronic Point of Sale

•

Battery-Powered Equipment

•

Appliances

•

Consumer Audio

3 Description

The TMUX1208 and TMUX1209 are general purpose

complementary metal-oxide semiconductor (CMOS)

multiplexers (MUX). The TMUX1208 offers 8:1 single-

ended

channels,

while

the

TMUX1209

offers

differential 4:1 or dual 4:1 single-ended channels.

Wide operating supply of 1.08 V to 5.5 V allows for

use in a broad array of applications from personal

electronics to building automation applications. The

device

supports

bidirectional

analog

and

digital

signals on the source (Sx) and drain (D) pins ranging

from GND to VDD.

All

logic

inputs

have

1.8

V

logic

compatible

thresholds, ensuring both TTL and CMOS logic

compatibility when operating in the valid supply

voltage

range.

Fail-Safe

Logic

circuitry

allows

voltages on the control pins to be applied before the

supply pin, protecting the device from potential

damage.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TMUX1208

TMUX1209

TSSOP (16)

5.00 mm × 4.40 mm

QFN (16)

2.60 mm x 1.80 mm

(1) For all available packages, see the package option addendum

at the end of the data sheet.

SPACER

Application Example

TMUX1208, TMUX1209 Block Diagram