TMUX1308, TMUX1309
SCDS426C – MARCH 20T20M–URXE1V3IS0E8D,ATUMGUUSXT12300290
SCDS426C – MARCH 2020 – REVISED AUGUST 2020
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TMUX13xx 5-V, Bidirectional 8:1, 1-Channel and 4:1, 2-Channel
Multiplexers with Injection Current Control
1 Features
3 Description
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Injection Current Control
Back-powering Protection
– No ESD Diode Path to VDD
Wide Supply Range: 1.62 V to 5.5 V
Low Capacitance
Bidirectional Signal Path
Rail-to-Rail Operation
1.8 V Logic Compatible
Fail-safe Logic
Break-before-make Switching
Functional Safety-Capable
– Documentation Available to Aid Functional
Safety System Design
TMUX1308 - Pin Compatible with:
– Industry Standard 4051 and 4851 Multiplexers
TMUX1309 - Pin Compatible with:
– Industry Standard 4052 and 4852 Multiplexers
The TMUX1308 and TMUX1309 are general purpose
complementary metal-oxide semiconductor (CMOS)
multiplexers (MUX). The TMUX1308 is an 8:1,
1-channel (single-ended) mux, while the TMUX1309
is a 4:1, 2-channel (differential) mux. The devices
support bidirectional analog and digital signals on the
source (Sx) and drain (Dx) pins ranging from GND to
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VDD
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The TMUX13xx devices have an internal injection
current control feature which eliminates the need for
external diode and 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. Additionally, the
TMUX13xx devices do not have any internal diode
path to the supply pin, which eliminates the risk of
damaging components connected to the supply pin, or
providing unintended power to the supply rail.
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2 Applications
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Analog and Digital Multiplexing and Demultiplexing
Diagnostics and Monitoring
Data Center Switch
Remote Radio Unit (RRU)
Rack Server
Electricity Meter
Appliances
Air Conditioner Units
Multifunction Printers
String Inverter
All logic inputs have 1.8 V logic compatible
thresholds, ensuring both TTL and CMOS logic
compatibility when operating with a valid supply
voltage. 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
PART NUMBER(1)
PACKAGE
BODY SIZE (NOM)
5.00 mm × 4.40 mm
4.20 mm x 2.00 mm
3.50 mm x 2.50 mm
TSSOP (16)
TMUX1308
TMUX1309
SOT-23-THIN (16)
WQFN (16)
IP Network Camera
Currency Counters
Off-highway Vehicles Control Systems
(1) For all available packages, see the package option
addendum at the end of the data sheet.
TMUX1308
TMUX1309
S0A
S1A
S2A
S3A
S0
S1
S2
S3
S4
S5
S6
S7
DA
DB
D
S0B
S1B
S2B
S3B
1-OF-8
1-OF-4
DECODER
DECODER
A0
A1
EN
A0 A1 A2 EN
TMUX1308 and TMUX1309 Block Diagram
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.
Copyright © 2020 Texas Instruments Incorporated
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Product Folder Links: TMUX1308 TMUX1309