TMUX1111RSVR datasheet(22/44 Pages) TI2

22 / 44 page

8 Detailed Description

8.1 Overview

The TMUX1111, TMUX1112, and TMUX1113 are 1:1 (SPST), 4-Channel switches. The devices have four

independently selectable single-pole, single-throw switches that are turned-on or turned-off based on the state of

the corresponding select pin.

8.2 Functional Block Diagram

SEL1

SEL2

SEL3

SEL4

TMUX1111

TMUX1112

TMUX1113

SEL1

SEL2

SEL3

SEL4

SEL1

SEL2

SEL3

SEL4

CHANNEL 1

CHANNEL 2

CHANNEL 3

CHANNEL 4

CHANNEL 1

CHANNEL 2

CHANNEL 3

CHANNEL 4

CHANNEL 1

CHANNEL 2

CHANNEL 3

CHANNEL 4

ALL SWITCHES SHOWN FOR A LOGIC 0 INPUT

Figure 8-1. TMUX111x Functional Block Diagram

8.3 Feature Description

8.3.1 Bidirectional operation

The TMUX111x conducts equally well from source (Sx) to drain (Dx) or from drain (Dx) to source (Sx). Each

channel has very similar characteristics in both directions and supports both analog and digital signals.

8.3.2 Rail to rail operation

The valid signal path input/output voltage for TMUX111x ranges from GND to VDD.

8.3.3 1.8V Logic compatible inputs

The TMUX111x devices have 1.8V logic compatible control for all logic control inputs. The logic input thresholds

scale with supply but still provide 1.8V logic control when operating at 5.5V supply voltage. 1.8V logic level

inputs allows the TMUX111x devices to interface with processors that have lower logic I/O rails and eliminates

the need for an external translator, which saves both space and BOM cost. The current consumption of the

TMUX111x devices increase when using 1.8V logic with higher supply voltage as shown in Figure 6-10. For

more information on 1.8V logic implementations refer to Simplifying Design with 1.8V logic Muxes and Switches

8.3.4 Fail-safe logic

The TMUX111x supports Fail-Safe Logic on the control input pins (EN, A0, A1) allowing for operation up to

5.5V, regardless of the state of the supply pin. This feature allows voltages on the control pins to be applied

before the supply pin, protecting the device from potential damage. Fail-Safe Logic minimizes system complexity

by removing the need for power supply sequencing on the logic control pins. For example, the Fail-Safe Logic

feature allows the select pins of the TMUX111x to be ramped to 5.5V while VDD = 0V. Additionally, the feature

enables operation of the TMUX111x with VDD = 1.2V while allowing the select pins to interface with a logic level

of another device up to 5.5V.

8.3.5 Ultra-Low Leakage Current

The TMUX111x devices provide extremely low on-leakage and off-leakage currents. The TMUX111x devices

are capable of switching signals from high source-impedance inputs into a high input-impedance op amp with

minimal offset error because of the ultra-low leakage currents. Figure 8-2 shows typical leakage currents of the

TMUX111x devices versus temperature at VDD = 5V.

TMUX1111, TMUX1112, TMUX1113

SCDS408C – FEBRUARY 2019 – REVISED DECEMBER 2023

www.ti.com

Submit Document Feedback

Product Folder Links: TMUX1111 TMUX1112 TMUX1113

TMUX1111RSVR датащи(PDF) 22 Page - Texas Instruments

TMUX1111RSVR датащи(HTML) 22 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

датащи скачать

ссылки URL