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Home > Products > Integrated Circuits (ICs) > Logic > Signal Switches, Multiplexers, Decoders

Toshiba Semiconductor and Storage TC7W66FU,LF

Name: TC7W66FU,LF
Brand: Toshiba Semiconductor and Storage
SKU: TC7W66FU,LF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TC7W66FU,LF

Manufacturer:: Toshiba Semiconductor and Storage

Category:: Signal Switches, Multiplexers, Decoders

Package:: 8-TSSOP, 8-MSOP (0.110", 2.80mm Width)

Datasheet:: TC7W66FU,LF.pdf

Description:: IC BILATERAL SWITCH 1 X 1:1 SM8

Quantity:: RFQ Add To RFQ list

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Inventory:19,875

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Product details

Overview

TC7W66FU,LF from Toshiba is a dual bilateral analog/digital switch IC in SM8 (SSOP-8) package, featuring 4 independent CMOS switches with 50 Ω typical ON resistance at 9 V, 7 ns typical propagation delay at 5 V, and ±25 mA output current capability. It operates from 2 V to 12 V supply and is used in signal routing for audio multiplexing, data acquisition front-ends, and test equipment switching matrices.

For engineers reviewing the TC7W66FU,LF datasheet, TC7W66FU,LF pinout, TC7W66FU,LF application, or TC7W66FU,LF equivalent, key selection criteria include guaranteed 50 Ω RON matching across channels, <10 ns AC switching times at 4.5–12 V, THD ≤0.05% at 1 kHz for analog integrity, and robust ±20 mA input/output diode current protection.

Technical Context

The TC7W66FU,LF implements two independent bilateral switches per channel, each controlled by dedicated CMOS-compatible logic inputs (CONT1/CONT2), enabling bidirectional analog or digital signal pass-through with no polarity restriction. Its silicon gate CMOS process ensures low ICC (≤10 μA max at 12 V) and high noise immunity (VNIH/VNIL ≥28% VCC).

Each switch exhibits matched ON-resistance (ΔRON ≤5 Ω at 9 V), low feed-through capacitance (0.5 pF), and crosstalk suppression of −60 dB between switches at 1 MHz - critical for multi-channel signal isolation in mixed-signal systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2 V to 12 V - supports single-supply operation across 3.3 V, 5 V, and 9 V systems without level shifting.
ON Resistance (RON)	50 Ω typ. at VCC = 9 V - enables low insertion loss for audio and sensor signals up to 200 MHz bandwidth.
Propagation Delay (tpd)	7 ns typ. at VCC = 5 V - ensures sub-10 ns digital switching for high-speed data routing applications.
Total Harmonic Distortion	0.05% typ. at 1 kHz, 4.5 V - preserves analog fidelity in audio and precision instrumentation paths.
Switch Leakage (IOFF)	±100 nA max at VCC = 12 V - minimizes DC error in high-impedance sensor interfaces and sample-hold circuits.
Operating Temperature	−40°C to +85°C - qualified for industrial-grade embedded control and measurement equipment.

Pinout & Package

Package: SM8 (SSOP-8, 0.65 mm pitch), 0.02 g typical weight, RoHS-compliant lead finish.

Pin/Terminal	Circuit Role	Design Meaning
1	IN/OUT 1	Bidirectional analog/digital signal terminal for Switch 1 - connects to source or load without polarity constraint.
2	OUT/IN 1	Complementary bidirectional terminal for Switch 1 - forms full bilateral path with Pin 1.
3	CONT 2	CMOS-level control input for Switch 2 - HIGH enables conduction; LOW disables (high-impedance state).
4	GND	Ground reference for all internal circuitry and signal return - must be low-impedance connection.
5	OUT/IN 2	Complementary bidirectional terminal for Switch 2 - forms full bilateral path with Pin 6.
6	IN/OUT 2	Bidirectional analog/digital signal terminal for Switch 2 - symmetric to Pin 1 functionally.
7	CONT 1	CMOS-level control input for Switch 1 - independent enable/disable control, compatible with 2.0–12 V logic.
8	VCC	Positive supply rail - powers internal logic and switch driver; decoupling capacitor required near Pin 8.

Key Features

Feature	Design Value
Pin- and function-compatible with TC4W66	Enables drop-in replacement in legacy designs using TC4W66 without PCB or firmware changes.
Low ON-resistance mismatch (ΔRON ≤5 Ω)	Ensures matched gain/attenuation across dual channels in differential or stereo signal paths.
High linearity (THD = 0.04% typ. at 9 V)	Maintains signal integrity in audio codecs and precision ADC/DAC interface multiplexing.
Feed-through attenuation >60 dB at 1 MHz	Prevents unintended coupling between active and inactive channels in dense multi-switch layouts.
ESD-protected inputs (±20 mA diode current rating)	Withstands handling and system-level transients without external protection components.

Applications

Audio Signal Routing	Data Acquisition Multiplexer
Use Scenario: Selecting between multiple microphone inputs or speaker outputs in portable audio devices. IC Role / Device Role / Timing Role: Bidirectional analog switch managing low-voltage AC-coupled audio paths with minimal distortion. Use Value: 0.05% THD and 200 MHz bandwidth preserve wideband audio fidelity while 50 Ω RON avoids level mismatch between sources.	Use Scenario: Channel selection in 12-bit+ SAR ADC front-ends with multiple sensor inputs (thermocouple, RTD, voltage). IC Role / Device Role / Timing Role: Low-leakage analog switch isolating high-impedance sensors during sampling to prevent loading errors. Use Value: ±100 nA IOFF at 12 V ensures <1 LSB error in 16-bit systems; matched ΔRON minimizes channel-to-channel gain variation.
Test Equipment Signal Matrix	Digital I/O Expansion Interface
Use Scenario: Reconfigurable signal path routing in automated test equipment (ATE) for DUT stimulus/response switching. IC Role / Device Role / Timing Role: High-speed digital/analog switch enabling sub-10 ns path reconfiguration under microcontroller control. Use Value: 7 ns tpd and 30 MHz max control frequency support rapid test sequencing; 25 mA drive handles TTL/CMOS fan-out loads.	Use Scenario: Expanding GPIO count on microcontrollers by routing shared data lines to peripheral modules (EEPROM, sensors, displays). IC Role / Device Role / Timing Role: Level-agnostic bidirectional digital switch supporting 2–12 V logic families without translators. Use Value: CMOS-compatible control inputs and rail-to-rail signal swing allow direct interfacing with diverse logic families (3.3 V MCU ↔ 5 V display).

Audio Signal Routing

Data Acquisition Multiplexer

Use Scenario: Selecting between multiple microphone inputs or speaker outputs in portable audio devices.

IC Role / Device Role / Timing Role: Bidirectional analog switch managing low-voltage AC-coupled audio paths with minimal distortion.

Use Value: 0.05% THD and 200 MHz bandwidth preserve wideband audio fidelity while 50 Ω RON avoids level mismatch between sources.

Use Scenario: Channel selection in 12-bit+ SAR ADC front-ends with multiple sensor inputs (thermocouple, RTD, voltage).

IC Role / Device Role / Timing Role: Low-leakage analog switch isolating high-impedance sensors during sampling to prevent loading errors.

Use Value: ±100 nA IOFF at 12 V ensures <1 LSB error in 16-bit systems; matched ΔRON minimizes channel-to-channel gain variation.

Test Equipment Signal Matrix

Digital I/O Expansion Interface

Use Scenario: Reconfigurable signal path routing in automated test equipment (ATE) for DUT stimulus/response switching.

IC Role / Device Role / Timing Role: High-speed digital/analog switch enabling sub-10 ns path reconfiguration under microcontroller control.

Use Value: 7 ns tpd and 30 MHz max control frequency support rapid test sequencing; 25 mA drive handles TTL/CMOS fan-out loads.

Use Scenario: Expanding GPIO count on microcontrollers by routing shared data lines to peripheral modules (EEPROM, sensors, displays).

IC Role / Device Role / Timing Role: Level-agnostic bidirectional digital switch supporting 2–12 V logic families without translators.

Use Value: CMOS-compatible control inputs and rail-to-rail signal swing allow direct interfacing with diverse logic families (3.3 V MCU ↔ 5 V display).

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual bilateral switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TC4W66F,LF	Same pinout and function; slightly higher RON (65 Ω typ. at 9 V) and lower bandwidth (150 MHz).	Acceptable where THD <0.1% and bandwidth <150 MHz suffice; not recommended for high-fidelity audio.	Select TC4W66F,LF only if cost sensitivity outweighs performance requirements for RON and THD.
SN74LVC2G66DCUR	3.3 V only (1.65–5.5 V); 10 Ω RON typ. at 3.3 V but limited to 5 V max supply; no 9/12 V operation.	Suitable for modern low-voltage digital systems only; incompatible with 9 V analog rails or industrial 12 V supplies.	Choose SN74LVC2G66DCUR only in 3.3 V-only designs requiring ultra-low RON; avoid for mixed-voltage or analog-critical use.

Compared with TC4W66F,LF and SN74LVC2G66DCUR, the TC7W66FU,LF uniquely supports 2–12 V operation with balanced analog performance (0.05% THD, 50 Ω RON) and industrial temperature range - making it the sole option for wide-supply, high-fidelity dual-switch applications.

Availability

TC7W66FU,LF is available at Aetrix Electronics and suitable for audio signal routing, data acquisition multiplexing, and test equipment signal matrix applications requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant packaging.

Supply support for TC7W66FU,LF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Toshiba Electronic Devices & Storage Corporation designs and manufactures high-reliability semiconductor solutions for industrial, automotive, and consumer applications, with over 50 years of analog and logic IC heritage.

The TC7W66FU,LF belongs to Toshiba's legacy CMOS analog switch family, engineered for robust bidirectional signal control in mixed-signal systems where supply flexibility, low distortion, and thermal stability are critical.

FAQ

What is the maximum supply voltage rating for TC7W66FU,LF?

The TC7W66FU,LF has an absolute maximum supply voltage (VCC) rating of 13 V, but its specified operating range is 2 V to 12 V. Operation at 12 V is fully characterized for all parameters including RON (45 Ω max), THD (0.04%), and leakage (±100 nA). Exceeding 13 V risks permanent damage per Toshiba's Absolute Maximum Ratings table.

Does TC7W66FU,LF support true bidirectional analog signal switching?

Yes, the TC7W66FU,LF supports true bidirectional analog switching on both channels: Pins 1↔2 and Pins 5↔6 are fully symmetric, with identical RON, capacitance, and THD in either direction. This is confirmed by the "Dual Bilateral Switch" designation, pin labeling (IN/OUT and OUT/IN), and analog characterization data at VCC = 4.5 V and 9.0 V.

Is TC7W66FU,LF pin-compatible with TC4W66F,LF?

Yes, the TC7W66FU,LF is explicitly stated in Toshiba documentation as "Pin and function compatible with TC4W66". Both use identical SM8 (SSOP-8) footprint and pin mapping: CONT1 (Pin 7), IN/OUT1 (Pin 1), OUT/IN1 (Pin 2), GND (Pin 4), OUT/IN2 (Pin 5), IN/OUT2 (Pin 6), CONT2 (Pin 3), VCC (Pin 8).

What is the typical THD performance of TC7W66FU,LF at 9 V supply?

The TC7W66FU,LF achieves 0.04% typical total harmonic distortion (THD) at VCC = 9 V, fIN = 1 kHz, VIN = 8.0 Vp-p, RL = 10 kΩ, and CL = 50 pF. This value is measured under defined analog switch conditions and reflects its suitability for high-fidelity audio and precision sensor signal routing.

Can TC7W66FU,LF operate reliably at −40°C ambient temperature?

Yes, the TC7W66FU,LF is fully specified and tested over −40°C to +85°C ambient temperature. Electrical characteristics including RON, IOFF, and tpd are guaranteed across this range, and the device uses silicon gate CMOS technology qualified for industrial temperature operation per Toshiba's Operating Ranges table.

TC7W66FU,LF Specifications

Product attributes: Attribute value

Manufacturer:: Toshiba Semiconductor and Storage

Series:: TC7W

Package/Case:: 8-TSSOP, 8-MSOP (0.110", 2.80mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Bilateral, FET Switches

Circuit:: 1 x 1:1

Independent Circuits:: 2

Current - Output High, Low:: -

Voltage Supply Source:: Single Supply

Voltage - Supply:: 2V ~ 12V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SSOP

TC7W66FU,LF FAQ

1.How can I place an order for TC7W66FU,LF through Aetrix?

Please submit a Request for Quotation (RFQ) for TC7W66FU,LF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TC7W66FU,LF reliable?

The price and inventory of TC7W66FU,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC7W66FU,LF is usually 5 days.

3.What payment methods are accepted for TC7W66FU,LF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC7W66FU,LF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TC7W66FU,LF?

TC7W66FU,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TC7W66FU,LF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TC7W66FU,LF?

For technical support, including TC7W66FU,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC7W66FU,LF requirements.

6.How does Aetrix verify that TC7W66FU,LF is sourced from the original manufacturer or authorized distributors?

All TC7W66FU,LF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TC7W66FU,LF meets industry standards.

7.What is the process for return or replacement of TC7W66FU,LF?

All TC7W66FU,LF units undergo pre-shipment inspection (PSI). If there is an issue with TC7W66FU,LF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TC7W66FU,LF part is unused and in its original packaging.

Return procedure for TC7W66FU,LF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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