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Texas Instruments TMUX1511PWR
- Part No.:
- TMUX1511PWR
- Manufacturer:
- Texas Instruments
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TMUX1511PWR.pdf
- Description:
- IC SWITCH SPSTX4 4.5OHM 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,985
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Product details
Overview
TMUX1511 from Texas Instruments is a low-capacitance, 4-channel, 1:1 SPST analog switch with powered-off protection up to 3.6V, 1.8V logic compatibility, 2Ω on-resistance, 3.3pF on-capacitance, and 3GHz bandwidth. It serves as a bidirectional signal path selector in high-speed digital isolation applications such as JTAG and SPI bus routing.
For engineers reviewing the TMUX1511 datasheet, TMUX1511 pinout, TMUX1511 application, or TMUX1511 equivalent, this device is selected for low-distortion signal switching in 1.5V–5.5V systems requiring fail-safe logic, powered-off isolation, and sub-60ns transition timing at 3.3V.
Technical Context
The TMUX1511 implements a CMOS transmission-gate architecture with independent active-high SELx control per channel. Its fail-safe logic enables control voltage application before VDD, and integrated 6MΩ pull-down resistors ensure defined OFF-state behavior during power sequencing.
Powered-off protection operates up to 3.6V on S/D pins when VDD = 0V, preventing back-powering through ESD diodes. Signal path supports bidirectional analog/digital signals up to VDD × 2 (max 5.5V), with off-isolation of –90dB at 100kHz and channel-to-channel crosstalk of –90dB under ON-state conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 1.5V to 5.5V - supports single-supply operation across LDO-regulated 1.8V/2.5V/3.3V/5V rails without level-shifting. |
| On-Resistance | 2Ω typical - minimizes voltage drop and power loss in high-current digital signal paths (e.g., JTAG TCK/SCLK). |
| On-Capacitance | 3.3pF - preserves signal integrity for >1Gbps data rates by limiting capacitive loading on source/drain nodes. |
| Bandwidth | 3GHz - enables full passband for PCIe Gen3, USB 3.0, and 3Gbps serial interfaces without attenuation. |
| Powered-off Protection | Up to 3.6V on S/D pins at VDD = 0V - prevents system-level back-powering and ensures safe hot-plug isolation. |
| Logic Compatibility | 1.8V logic thresholds - interoperates directly with modern SoC GPIOs without external translators. |
| Operating Temperature | –40°C to +125°C - qualified for industrial and networking equipment operating in extended thermal environments. |
Pinout & Package
TMUX1511 is available in three package variants: 14-pin TSSOP (PW), 16-pin QFN (RSV), and 12-pin X2QFN (RWB). The TSSOP variant is the standard orderable option referenced in design documentation and evaluation use cases.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SEL1–SEL4 | Active-high digital control input | Each independently enables its corresponding Sx–Dx channel; internal 6MΩ pull-down ensures OFF state at power-up. |
| S1–S4 | Bidirectional signal source terminal | Accepts or delivers analog/digital signals; supports voltages up to VDD × 2 (max 5.5V) regardless of VDD state. |
| D1–D4 | Bidirectional signal drain terminal | Paired with Sx to form four independent SPST paths; identical voltage and current ratings as Sx pins. |
| VDD | Positive supply rail | Power source for internal logic and switch bias; requires 0.1µF decoupling capacitor to GND for stable high-frequency operation. |
| GND | Ground reference | Common return path for supply and signal currents; must be low-impedance to minimize noise coupling into sensitive analog paths. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional signal path | Enables reuse of same physical trace for transmit/receive in half-duplex protocols like SPI and JTAG without direction control logic. |
| Fail-safe logic | Allows SELx voltage application prior to VDD ramp-up, eliminating risk of latch-up or undefined switching during power sequencing. |
| Powered-off protection | Blocks signal leakage and prevents back-powering when VDD is absent-critical for hot-swap and system-level isolation compliance. |
| Low on-capacitance (3.3pF) | Reduces RC delay and maintains edge rate integrity for high-speed clocks and data lines up to 3Gbps. |
| 1.8V logic compatible inputs | Direct interface with low-voltage I/O standards (e.g., ARM Cortex-M, FPGA banks) eliminates need for external level shifters. |
Applications
| JTAG Isolation | SPI Bus Multiplexing |
|---|---|
|
Use Scenario: Isolating debug ports between host processor and multiple target devices in server blade architectures. IC Role / Device Role / Timing Role: Bidirectional SPST switch enabling selective connection of TDI/TDO/TCK/TMS lines to one target at a time. Use Value: Prevents signal contention and ground loops during concurrent debug sessions while maintaining <60ns propagation delay for real-time trace capture. |
Use Scenario: Sharing a single SPI controller among multiple peripherals (e.g., flash, sensor, EEPROM) in space-constrained embedded designs. IC Role / Device Role / Timing Role: Channel-selectable signal path that preserves clock/data timing alignment across all enabled devices. Use Value: Eliminates need for discrete MOSFET arrays or complex PCB routing; 3.3pF capacitance avoids SPI timing violations at 50MHz SCLK. |
| Data Center Switch Backplane Routing | Industrial Motor Drive Control Interface |
|
Use Scenario: Routing high-speed configuration and status signals between management MCU and ASIC/FPGA on modular line cards. IC Role / Device Role / Timing Role: Low-distortion analog switch supporting bidirectional I²C, UART, and GPIO signals across hot-swappable modules. Use Value: Powered-off protection ensures safe insertion/removal without disrupting backplane power domains or damaging upstream logic. |
Use Scenario: Isolating microcontroller GPIOs from motor driver enable/fault feedback lines subject to high-voltage transients. IC Role / Device Role / Timing Role: Signal-level protection switch placed between isolated MCU domain and non-isolated gate driver stage. Use Value: 3.6V powered-off tolerance prevents latch-up during driver IC brown-out events; 125°C rating matches motor drive ambient requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTLV3126 | Pinout-compatible but lacks powered-off protection and 1.8V logic support; max VIO = VCC only. | Not suitable for hot-swap or back-powered isolation scenarios; limited to 3.3V-only systems with no VDD sequencing constraints. | Select SN74CBTLV3126 only if powered-off protection and 1.8V logic are unnecessary and cost is primary constraint. |
| TMUX1574 | 4-channel, 1:2 (SPDT) configuration with same 3.3pF/2Ω specs, but adds dual-path selection per channel and higher supply range (1.08V–5.5V). | Supports multiplexing one source to two destinations (e.g., dual-flash boot selection), unlike TMUX1511's fixed SPST topology. | Choose TMUX1574 when flexible routing (SPDT) is required; TMUX1511 remains optimal for simple ON/OFF isolation per line. |
Compared with SN74CBTLV3126 and TMUX1574, the TMUX1511 uniquely balances SPST simplicity, powered-off safety, and 1.8V logic compatibility-making it the preferred choice for JTAG/SPI isolation where minimal BOM count and guaranteed fail-safe behavior are critical.
Availability
TMUX1511 is available at Aetrix Electronics and suitable for servers, wired networking infrastructure, and industrial motor drives requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TMUX1511 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity solutions with over 50 years of innovation in precision signal chain and power management technologies.
The TMUX1511 belongs to TI's high-speed analog switch portfolio designed specifically for low-distortion, low-latency signal routing in next-generation communication, computing, and industrial control systems.
FAQ
What is the maximum signal voltage the TMUX1511 can handle when powered on?
The TMUX1511 supports signal voltages up to VDD × 2 on its Sx and Dx pins, with an absolute maximum of 5.5V. For example, at VDD = 3.3V, signals up to 6.6V are permitted-but clamped at 5.5V per absolute maximum rating. This capability allows seamless interfacing with mixed-voltage systems without external clamping.
Does the TMUX1511 require external pull-up or pull-down resistors on SEL pins?
No. The TMUX1511 integrates 6MΩ pull-down resistors on all SEL1–SEL4 pins, ensuring a defined logic-low state at power-up or during VDD ramp-up. External resistors are unnecessary unless specific timing or noise immunity requirements demand stronger biasing.
Can the TMUX1511 be used in AC-coupled high-speed serial links?
Yes. With 3GHz bandwidth, 3.3pF on-capacitance, and –90dB off-isolation at 100kHz, the TMUX1511 maintains signal integrity in AC-coupled applications such as USB 2.0, PCIe Gen1, and 100Mbps Ethernet PHY routing-provided DC biasing networks comply with VDD × 2 voltage limits.
How does powered-off protection work in the TMUX1511?
When VDD = 0V, the TMUX1511 blocks signal currents up to 3.6V on S/D pins using internal circuitry that isolates the channel FETs from the supply rail. This prevents back-powering of downstream VDD domains through ESD diodes-a key requirement for hot-plug compliance in modular systems.
Is the TMUX1511 pin-compatible with any industry-standard logic buffers?
Yes. The TMUX1511 TSSOP-14 package is pinout-compatible with SN74CBTLV3126, enabling drop-in replacement in existing layouts where powered-off protection and 1.8V logic compatibility are added via firmware or minor schematic updates-no PCB revision required.
TMUX1511PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 4.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 70mOhm
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 60µs, 4µs
- -3db Bandwidth:
- 3GHz
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 2.5pF, 2.5pF
- Current - Leakage (IS(off)) (Max):
- 100nA
- Crosstalk:
- -90dB @ 100kHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
TMUX1511PWR FAQ
1.How can I place an order for TMUX1511PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TMUX1511PWR 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 TMUX1511PWR reliable?
The price and inventory of TMUX1511PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMUX1511PWR is usually 5 days.
3.What payment methods are accepted for TMUX1511PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMUX1511PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMUX1511PWR?
TMUX1511PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMUX1511PWR 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 TMUX1511PWR?
For technical support, including TMUX1511PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMUX1511PWR requirements.
6.How does Aetrix verify that TMUX1511PWR is sourced from the original manufacturer or authorized distributors?
All TMUX1511PWR 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 TMUX1511PWR meets industry standards.
7.What is the process for return or replacement of TMUX1511PWR?
All TMUX1511PWR units undergo pre-shipment inspection (PSI). If there is an issue with TMUX1511PWR, 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 TMUX1511PWR part is unused and in its original packaging.
Return procedure for TMUX1511PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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