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Texas Instruments TXU0202DTTR
- Part No.:
- TXU0202DTTR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXU0202DTTR.pdf
- Description:
- TWO CHANNEL FIXED-DIRECTION LEVE
- Quantity:
- Payment:
- Shipping:
Inventory:5,145
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Product details
Overview
TXU0202DTTR from Texas Instruments is a dual-bit fixed-direction voltage-level translator with Schmitt-trigger inputs and 3-state outputs, supporting bidirectional level shifting between 1.1 V and 5.5 V rails, delivering up to 12 mA drive strength at 5 V, and operating across –40°C to +125°C for industrial and automotive I/O interfacing.
For engineers reviewing the TXU0202DTTR datasheet, TXU0202DTTR pinout, TXU0202DTTR application, or TXU0202DTTR equivalent, this device enables robust GPIO translation in mixed-voltage systems where noise immunity, low quiescent current (≤6 µA), and VCC isolation are critical selection criteria.
Technical Context
The TXU0202DTTR implements a dual-supply noninverting architecture with independent A- and B-port voltage references (VCCA and VCCB), enabling fixed-direction data flow either A→B or B→A under OE control. Its Schmitt-trigger inputs provide hysteresis (ΔVT = 0.2–1.18 V) to reject slow or noisy signals without external conditioning.
It features VCC isolation (Ioff-float): if either VCCA or VCCB drops below 100 mV, all outputs enter high-impedance state. The OE pin accepts logic levels referenced to either VCCA or VCCB, simplifying control in asymmetric rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 1.1 V to 5.5 V per port - supports direct interface between legacy 5 V logic and modern ultra-low-voltage MCUs (1.2 V/1.8 V). |
| Drive Strength | Up to 12 mA at 5 V - sufficient to directly drive LEDs, small relays, or capacitive loads up to ~15 pF without buffering. |
| Quiescent Current | ≤6 µA over –40°C to +125°C - enables always-on level shifting in battery-powered or thermally constrained applications. |
| Propagation Delay | As low as 8 ns (A→B, VCCA = 3.3 V, VCCB = 5.0 V, –40°C to 85°C) - suitable for SPI and UART interfaces up to 20 MHz. |
| Input Hysteresis | 0.2 V to 1.18 V (ΔVT) - rejects noise spikes ≤100 ns and eliminates false triggering on mechanical switch bounce or EMI-coupled edges. |
| ESD Protection | ±2500 V HBM, ±1500 V CDM - meets industrial-grade robustness requirements without external TVS diodes. |
Pinout & Package
TXU0202DTTR is packaged in an 8-pin SON (DTT) package measuring 1.95 mm × 1.00 mm, optimized for space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| B2 | Input (B-port) | Signal input referenced to VCCB; accepts 1.1–5.5 V logic levels. |
| GND | Ground | Common reference for both supply rails; must be low-impedance connection. |
| VCCA | A-port supply | Power for A-side logic (A1, A2Y); sets input threshold and output swing for A outputs. |
| A2Y | Output (A-port) | Inverted naming reflects internal signal path; active-high output referenced to VCCA. |
| A1 | Input (A-port) | Signal input referenced to VCCA; Schmitt-triggered with integrated pulldown. |
| OE | Output Enable | Active-high control referenced to VCCA or VCCB; disables both outputs to high-Z when low. |
| VCCB | B-port supply | Power for B-side logic (B1Y, B2); independent of VCCA for true dual-rail operation. |
| B1Y | Output (B-port) | Active-high output referenced to VCCB; complements A1 input directionally. |
Key Features
| Feature | Design Value |
|---|---|
| Fully configurable dual-rail operation | Enables independent 1.1–5.5 V supply domains on A and B ports-no level-shifter IC selection required per voltage pair. |
| Schmitt-trigger inputs with integrated pulldowns | Eliminates need for external pull resistors and prevents floating inputs during power-up or MCU reset sequences. |
| VCC isolation (Ioff-float) | Guarantees high-impedance outputs when either rail is powered down-critical for hot-swap and partial-power-down systems. |
| OE logic referenced to either VCCA or VCCB | Allows single control signal from either voltage domain, reducing need for auxiliary level shifters on enable lines. |
| Pinout compatibility with TXB family | Permits drop-in replacement in existing designs using TXB0102, retaining PCB layout while upgrading to higher drive and noise immunity. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Interfacing 1.8 V microcontroller GPIOs to 5 V analog sensor outputs and discrete 5 V indicator LEDs. IC Role / Device Role / Timing Role: Bidirectional level translator isolating logic domains while preserving signal integrity and timing margins. Use Value: Eliminates external pull-ups and RC filters; Schmitt inputs suppress EMI-induced glitches on long sensor traces. |
Use Scenario: Translating signals between 3.3 V body controller MCU and 5 V legacy lighting drivers or door lock actuators. IC Role / Device Role / Timing Role: Fixed-direction translator with OE-controlled tri-state for shared bus arbitration and fail-safe shutdown. Use Value: VCC isolation ensures LED drivers remain disabled if 3.3 V rail fails, preventing unintended activation. |
| IoT Edge Node GPIO Expansion | Medical Diagnostic Equipment |
|
Use Scenario: Extending low-power 1.2 V SoC GPIOs to drive 3.3 V communication peripherals (UART, SPI) and status indicators. IC Role / Device Role / Timing Role: Low-quiescent-current voltage translator enabling always-on wake-up signaling without battery drain. Use Value: 2.5 µA max ICC at 25°C extends battery life in wireless sensor nodes; compact DTT package saves board area. |
Use Scenario: Isolating 5 V legacy display interface signals from 1.5 V FPGA-based control logic in portable ultrasound units. IC Role / Device Role / Timing Role: Noise-immune level shifter ensuring reliable command transmission in EMI-sensitive diagnostic environments. Use Value: ±2500 V HBM ESD rating protects against operator-handling discharge; latch-up immunity >100 mA meets IEC 61000-4-2 compliance needs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXB0102RGTR | Lower drive strength (4 mA), no Schmitt inputs, no integrated pulldowns, no VCC isolation. | Limited to clean, fast-rising signals; unsuitable for mechanical switches or noisy industrial environments. | Select TXU0202DTTR when noise immunity, partial-power-down safety, or >6 mA drive is required. |
| TXU0102DTTR | Same family, but both channels unidirectional (A→B only); identical pinout, specs, and package. | Used where only one-way translation is needed (e.g., MCU-to-peripheral), simplifying OE control logic. | Choose TXU0202DTTR when bidirectional flexibility (A↔B via OE polarity) or independent channel use is needed. |
Compared with TXB0102RGTR, TXU0202DTTR adds Schmitt inputs, VCC isolation, and 3× higher drive-enabling robust operation in harsh environments without redesign. Against TXU0102DTTR, it provides full bidirectional capability per channel, increasing system-level routing flexibility.
Availability
TXU0202DTTR is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and IoT edge node designs requiring stable component supply, extended temperature support, and guaranteed long-term manufacturability.
Supply support for TXU0202DTTR 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 decades of expertise in precision signal chain and power management ICs.
The TXU0x02 product line was designed specifically for reliable, low-power, mixed-voltage I/O bridging in industrial, automotive, and medical systems where noise immunity, rail independence, and fail-safe behavior are mandatory.
FAQ
What is the maximum supported data rate for TXU0202DTTR in a 3.3 V to 5.0 V level-shifting configuration?
The TXU0202DTTR supports up to 200 Mbps in 3.3 V to 5.0 V translation, validated by propagation delay measurements as low as 8 ns (A→B, VCCA = 3.3 V, VCCB = 5.0 V, –40°C to 85°C). This enables reliable operation in high-speed UART, SPI, and JTAG applications without signal degradation.
Does TXU0202DTTR require external pull-up or pull-down resistors on its input pins?
No, TXU0202DTTR includes integrated static pull-down resistors on all data inputs (A1, A2Y, B1Y, B2) and OE, preventing floating states during power-up, reset, or unconnected conditions. This eliminates the need for external biasing components and reduces BOM count and board area.
How does the VCC isolation (Ioff-float) feature function in TXU0202DTTR?
When either VCCA or VCCB falls below 100 mV or becomes disconnected, the TXU0202DTTR automatically disables all outputs and places them in high-impedance state. This prevents back-driving or leakage currents between powered and unpowered subsystems-essential for hot-swap and partial-power-down architectures.
Can the OE pin of TXU0202DTTR be driven from the VCCB rail instead of VCCA?
Yes, the OE pin in TXU0202DTTR is designed with VCC(MIN) circuitry and accepts logic thresholds referenced to either VCCA or VCCB. This allows direct control from either supply domain without an additional level shifter, simplifying system-level enable sequencing in asymmetric rail designs.
What is the operating temperature range specified for TXU0202DTTR, and is it qualified for automotive use?
TXU0202DTTR is rated for operation from –40°C to +125°C and meets JESD78 Class II latch-up performance (>100 mA) and JESD22 ESD ratings (±2500 V HBM). While not AEC-Q200 certified out-of-box, its extended temperature range and robustness make it suitable for under-hood and cabin automotive applications pending system-level qualification.
TXU0202DTTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 2
- Voltage - VCCA:
- 1.08 V ~ 5.5 V
- Voltage - VCCB:
- 1.08 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State
- Data Rate:
- 200Mbps
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-XFDFN Exposed Pad
TXU0202DTTR FAQ
1.How can I place an order for TXU0202DTTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TXU0202DTTR 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 TXU0202DTTR reliable?
The price and inventory of TXU0202DTTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXU0202DTTR is usually 5 days.
3.What payment methods are accepted for TXU0202DTTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXU0202DTTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXU0202DTTR?
TXU0202DTTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXU0202DTTR 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 TXU0202DTTR?
For technical support, including TXU0202DTTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXU0202DTTR requirements.
6.How does Aetrix verify that TXU0202DTTR is sourced from the original manufacturer or authorized distributors?
All TXU0202DTTR 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 TXU0202DTTR meets industry standards.
7.What is the process for return or replacement of TXU0202DTTR?
All TXU0202DTTR units undergo pre-shipment inspection (PSI). If there is an issue with TXU0202DTTR, 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 TXU0202DTTR part is unused and in its original packaging.
Return procedure for TXU0202DTTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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