Zakładka z wyszukiwarką danych komponentów
  Polish  ▼
ALLDATASHEET.PL

X  

TMUX1308-Q1 Arkusz danych(PDF) 28 Page - Texas Instruments

Numer części TMUX1308-Q1
Szczegółowy opis  TMUX13xx-Q1 5-V, Bidirectional 8:1, 1-Channel and 4:1, 2-Channel Multiplexers with Injection Current Control
Download  43 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

TMUX1308-Q1 Arkusz danych(HTML) 28 Page - Texas Instruments

Back Button TMUX1308-Q1_V02 Datasheet HTML 24Page - Texas Instruments TMUX1308-Q1_V02 Datasheet HTML 25Page - Texas Instruments TMUX1308-Q1_V02 Datasheet HTML 26Page - Texas Instruments TMUX1308-Q1_V02 Datasheet HTML 27Page - Texas Instruments TMUX1308-Q1_V02 Datasheet HTML 28Page - Texas Instruments TMUX1308-Q1_V02 Datasheet HTML 29Page - Texas Instruments TMUX1308-Q1_V02 Datasheet HTML 30Page - Texas Instruments TMUX1308-Q1_V02 Datasheet HTML 31Page - Texas Instruments TMUX1308-Q1_V02 Datasheet HTML 32Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 28 / 43 page
background image
9.3 Design Requirements
For this design example, use the parameters listed in Table 9-1.
Table 9-1. Design Parameters
PARAMETERS
VALUES
Supply (VDD)
5.0 V
I/O signal range
0 V to VDD (Rail to Rail)
Control logic thresholds
1.8 V compatible
Switch inputs
Eight
9.4 Detailed Design Procedure
The TMUX1308-Q1 has an internal injection current control feature which eliminates the need for external diode/
resistor networks typically used to protect the switch and keep the input signals within the supply voltage. The
internal injection current control circuitry allows signals on disabled signal paths to exceed the supply voltage
without affecting the signal of the enabled signal path. Injected currents can come from various sources such as
from long cabling in automotive systems that may be susceptible to induced currents from switching or transient
events. Another momentary source of injected currents in BCMs are wetting currents, which are small currents
used to prevent oxidation on metal switch contacts or wires. A switch without injection current control can have
the measured output of the enabled signal path impacted if a current is injected into a disabled signal path. This
undesired change in the output can cause issues related to false trigger events and incorrect measurement
readings which can compromise the accuracy and reliability of the BCM system. Figure 9-2 shows a detailed
BCM application.
V
V
BAT
12V
C
BUFF
10 nF
S1
C
VBAT
D
BATT
…C
D
1
20 kO
R
WE TT
1.2 kO
15 kO
12 kO
V
BATT
10 kO
2.7 nF
10 nF
S8
D
8
20 kO
15 kO
1.2 kO
S0
S7
D
A
0
A
1
A
2
Figure 9-2. Detailed BCM Application
The BCM uses the 12 V battery voltage to provide a wetting current to each switch when the associated control
circuitry is enabled by the micro controller. The wetting current is sized by the RWETT and the required value may
vary depending on the type physical switch being monitoried. The 20 kΩ and 15 kΩ resistors are used in addition
to the wetting resistor to create a voltage divider before the input of the multiplexer incase of a short to battery
condition. The resistor values are selected to maintain the voltage at the switch signal path below VDD. The 20
kΩ series resistor also limits the amount of injected current into the switch if an overvotlage event occurs. Diodes
D1 through D8 are used to prevent back flow of current in case a secondary system is monitoring the same
physical switches for backup or redundancy reasons. The 10 nF capacitors are used for initial ESD protection in
the system and must be sized based on system level requirements.
TMUX1308-Q1, TMUX1309-Q1
SCDS414C – DECEMBER 2019 – REVISED AUGUST 2020
www.ti.com
28
Submit Document Feedback
Copyright © 2020 Texas Instruments Incorporated
Product Folder Links: TMUX1308-Q1 TMUX1309-Q1


Podobny numer części - TMUX1308-Q1_V02

ProducentNumer częściArkusz danychSzczegółowy opis
logo
Texas Instruments
TMUX1308-Q1 TI1-TMUX1308-Q1_V01 Datasheet
1Mb / 43P
[Old version datasheet]   TMUX130x-Q1 5-V, Bidirectional 8:1, 1-Channel and 4:1, 2-Channel Multiplexers with Injection Current Control
TMUX1308-Q1 TI-TMUX1308-Q1_V03 Datasheet
2Mb / 43P
[Old version datasheet]   TMUX13xx-Q1 5-V, Bidirectional 8:1, 1-Channel and 4:1, 2-Channel Multiplexers with Injection Current Control
More results

Podobny opis - TMUX1308-Q1_V02

ProducentNumer częściArkusz danychSzczegółowy opis
logo
Texas Instruments
TMUX1308-Q1 TI1-TMUX1308-Q1 Datasheet
1Mb / 36P
[Old version datasheet]   TMUX13xx-Q1 5-V, Bidirectional 8:1, 1-Channel and 4:1, 2-Channel Multiplexers with Injection Current Control
TMUX1308-Q1 TI-TMUX1308-Q1_V03 Datasheet
2Mb / 43P
[Old version datasheet]   TMUX13xx-Q1 5-V, Bidirectional 8:1, 1-Channel and 4:1, 2-Channel Multiplexers with Injection Current Control
TMUX1308 TI-TMUX1308_V02 Datasheet
2Mb / 42P
[Old version datasheet]   TMUX13xx 5-V, Bidirectional 8:1, 1-Channel and 4:1, 2-Channel Multiplexers with Injection Current Control
TMUX1308 TI-TMUX1308_V01 Datasheet
2Mb / 42P
[Old version datasheet]   TMUX13xx 5-V, Bidirectional 8:1, 1-Channel and 4:1, 2-Channel Multiplexers with Injection Current Control
TMUX1308-Q1 TI1-TMUX1308-Q1_V01 Datasheet
1Mb / 43P
[Old version datasheet]   TMUX130x-Q1 5-V, Bidirectional 8:1, 1-Channel and 4:1, 2-Channel Multiplexers with Injection Current Control
TMUX1308 TI1-TMUX1308 Datasheet
1Mb / 37P
[Old version datasheet]   TMUX130x 5-V, Bidirectional 8:1, 1-Channel and 4:1, 2-Channel Multiplexers with Injection Current Control
TMUX1208 TI1-TMUX1208_18 Datasheet
1Mb / 34P
[Old version datasheet]   5-V Bidirectional 8:1, 1-Channel Multiplexer, 5-V Bidirectional 4:1, 2-Channel Multiplexer
TMUX4051-Q1 TI-TMUX4051-Q1 Datasheet
1Mb / 30P
[Old version datasheet]   TMUX405x-Q1 Automotive 24-V, 8:1, 1-Channel, and 4:1, 2-Channel Multiplexers with 1.8-V Logic
JUNE 2022
TMUX4051-Q1 TI-TMUX4051-Q1_V01 Datasheet
1Mb / 30P
[Old version datasheet]   TMUX405x-Q1 Automotive 24-V, 8:1, 1-Channel, and 4:1, 2-Channel Multiplexers with 1.8-V Logic
JUNE 2022
TMUX4051-Q1 TI-TMUX4051-Q1_V02 Datasheet
1Mb / 31P
[Old version datasheet]   TMUX405x-Q1 Automotive 24-V, 8:1, 1-Channel, and 4:1, 2-Channel Multiplexers with 1.8-V Logic
REVISED MARCH 2023
More results


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


Arkusz danych Pobierz

Go To PDF Page


Link URL




Polityka prywatności
ALLDATASHEET.PL
Czy Alldatasheet okazała się pomocna?  [ DONATE ] 

O Alldatasheet   |   Reklama   |   Kontakt   |   Polityka prywatności   |   Linki   |   Lista producentów
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com