component

TMUX1208

Public Made by Adom

by adom

TI 8:1 precision analog multiplexer, TSSOP-16. 1.8-5.5 V single or +/-2.75 V dual, low leakage. Datasheet-verified.

componentinterfaceanalog-muxmultiplexer8-channeltssop-16texas-instruments
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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
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docs tmux1208: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers tmux1208: interactive cross-highlight viewers · Ray
package.json Publish 0.1.0 · Ray
page.json tmux1208: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md tmux1208: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray
tmux1208-etched.fit.json tmux1208: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
tmux1208-etched.glb tmux1208: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
tmux1208-etched.step tmux1208: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
tmux1208.glb Publish 0.1.0 · Ray
tmux1208.kicad_mod Publish 0.1.0 · Ray
tmux1208.kicad_sym Publish 0.1.0 · Ray
tmux1208.lbr Publish 0.1.0 · Ray
tmux1208.step Publish 0.1.0 · Ray

TMUX1208

Texas Instruments · Analog multiplexer · TSSOP-16

Routes one of eight analog inputs (S1-S8) to a single common pin (D) under a 3-bit address, a modern precision replacement for the classic 4051. It runs on a single 1.8 to 5.5 V rail or a dual supply down to VSS for bipolar signals, with low on-resistance, low leakage, and fast switching that keeps signal error small. An EN pin disconnects all channels. Good for multiplexing sensor and ADC front ends where the older CMOS muxes leak or distort.

Pinout

Pin Name Type Function
1 A0 input Address line 0. Controls the switch configuration (which Sx channel connects to D) per the truth table. 1.8 V logic compatible; VIH ≥ 1.49 V, VIL ≤ 0.87 V at VDD = 5 V.
2 EN input Active-high enable input. When low, all switches are turned off; when high, the A[2:0] address inputs determine which channel is on. Fail-safe logic tolerates control voltages before VDD is applied.
3 VSS power_in Negative power supply. Tie to GND for single-supply operation, or to a negative rail for bipolar signal switching.
4 S1 bidirectional Source pin 1. Bidirectional analog/digital switch terminal; can be input or output. Signal range: GND to VDD; RON ≈ 5 Ω typical at VDD = 5 V.
5 S2 bidirectional Source pin 2. Bidirectional analog/digital switch terminal; can be input or output. Signal range: GND to VDD; RON ≈ 5 Ω typical at VDD = 5 V.
6 S3 bidirectional Source pin 3. Bidirectional analog/digital switch terminal; can be input or output. Signal range: GND to VDD; RON ≈ 5 Ω typical at VDD = 5 V.
7 S4 bidirectional Source pin 4. Bidirectional analog/digital switch terminal; can be input or output. Signal range: GND to VDD; RON ≈ 5 Ω typical at VDD = 5 V.
8 D bidirectional Common drain pin. Bidirectional analog/digital terminal that connects to the selected Sx source per the A[2:0]/EN inputs. Signal range: GND to VDD.
9 S8 bidirectional Source pin 8. Bidirectional analog/digital switch terminal; can be input or output. Signal range: GND to VDD; RON ≈ 5 Ω typical at VDD = 5 V.
10 S7 bidirectional Source pin 7. Bidirectional analog/digital switch terminal; can be input or output. Signal range: GND to VDD; RON ≈ 5 Ω typical at VDD = 5 V.
11 S6 bidirectional Source pin 6. Bidirectional analog/digital switch terminal; can be input or output. Signal range: GND to VDD; RON ≈ 5 Ω typical at VDD = 5 V.
12 S5 bidirectional Source pin 5. Bidirectional analog/digital switch terminal; can be input or output. Signal range: GND to VDD; RON ≈ 5 Ω typical at VDD = 5 V.
13 VDD power_in Positive power supply, 1.08 V to 5.5 V. Connect a 0.1 µF to 10 µF decoupling capacitor between VDD and GND close to the pin.
14 GND power_in Ground (0 V) reference for the device.
15 A2 input Address line 2. Controls the switch configuration per the truth table. 1.8 V logic compatible.
16 A1 input Address line 1. Controls the switch configuration per the truth table. 1.8 V logic compatible.

Key specifications

Parameter Value
Type 8:1 analog multiplexer
Channels 8 (S1-S8) to 1 (D)
Address 3-bit (A0-A2) + EN
Supply 1.8-5.5 V single or +/-2.75 V dual
Leakage Low (pA range)
Switching Break-before-make
Package TSSOP-16

Ordering variants

Same part, different packaging or reel option.

  • TMUX1208PWR (TSSOP-16)
  • TMUX1208RSVR (UQFN-16)

CAD (KiCad official)

  • Symbol: Analog_Switch:TMUX1208PW (KiCad official)
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: tmux1208-etched.step / tmux1208-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tmux1208.step / tmux1208.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (37 pp, sha256 c2683e83f693c8d9, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF