My Inquiry
My Account
Texas Instruments TXS0101DCKT
- Part No.:
- TXS0101DCKT
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXS0101DCKT.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:27,980
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TXS0101DCKT from Texas Instruments is a 1-bit bidirectional voltage-level translator with auto-direction sensing, designed for open-drain and push-pull logic interfacing between 1.65V–3.6V (A port) and 2.3V–5.5V (B port) domains. It supports up to 24Mbps (push-pull) and 2Mbps (open-drain), features integrated 10kΩ pullups on both ports, and operates without direction-control signals. It enables level translation in mobile SoC-to-peripheral interfaces such as I²C or GPIO expansion in smartphones.
For engineers reviewing the TXS0101DCKT datasheet, TXS0101DCKT pinout, TXS0101DCKT application, or TXS0101DCKT equivalent, this device is selected for low-voltage bidirectional translation where power sequencing flexibility, VCC isolation, and Ioff partial-power-down support are required in space-constrained portable electronics.
Technical Context
The TXS0101DCKT uses a pass-gate architecture with edge-rate-accelerating one-shot circuits to enhance rise/fall times-critical for achieving 24Mbps push-pull data rates. Its dual-rail design allows independent A-port (VCCA) and B-port (VCCB) supply control, with VCCA ≤ VCCB enforced during operation but no sequencing dependency at power-up.
Each I/O includes internal 10kΩ pullup resistors referenced to its respective supply rail (VCCA for A, VCCB for B), eliminating external components in standard open-drain configurations. The OE input-referenced to VCCA-places all I/Os in high-impedance state when low, supporting system-level power management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 1.65V to 3.6V - sets A-port logic thresholds and defines minimum interface voltage for controllers like 1.8V/2.5V/3.3V SoCs |
| VCCB Range | 2.3V to 5.5V - supports B-port connection to 3.3V/5V peripherals including I²C slaves, sensors, or GPIO expanders |
| Max Data Rate | 24Mbps (push-pull) - enables high-speed bidirectional communication in compact timing-critical links |
| ESD Rating (B Port) | ±8kV HBM - ensures robustness against handling discharge in handheld assembly environments |
| Ioff Current | <±2µA - maintains signal integrity and prevents backfeeding during partial power-down of connected subsystems |
| VCC Isolation | Both ports enter high-Z if either VCCA or VCCB = GND - prevents leakage paths during brown-out or shutdown sequences |
| Package | SC70-6 (DCK), 2.0mm × 2.1mm - delivers ultra-small footprint for dense mobile PCB layouts |
Pinout & Package
TXS0101DCKT is housed in a 6-pin SC70 (DCK) package measuring 2.0mm × 2.1mm, optimized for space-constrained portable applications. Pin functions are validated per TI SCES638F datasheet Section 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA | A-port supply input | Reference rail for A-port logic levels; must be ≤ VCCB and within 1.65V–3.6V range |
| GND | Ground reference | Common return path for both ports; required for proper biasing of internal pass gates |
| A | Bidirectional I/O (A side) | Connects to 1.65V–3.6V domain; internally pulled up to VCCA via 10kΩ resistor |
| B | Bidirectional I/O (B side) | Connects to 2.3V–5.5V domain; internally pulled up to VCCB via 10kΩ resistor |
| OE | Output enable input | Active-high control referenced to VCCA; drives all I/Os to high-Z when low |
| VCCB | B-port supply input | Reference rail for B-port logic levels; accepts 2.3V–5.5V and must be ≥ VCCA |
Key Features
| Feature | Design Value |
|---|---|
| No direction-control signal required | Enables automatic bidirectional data flow detection-eliminates MCU GPIO overhead and routing complexity |
| Integrated 10kΩ pullups on both ports | Removes need for external pullup resistors in open-drain I²C or SMBus implementations |
| VCC isolation with high-Z fallback | Prevents current leakage and bus contention when either supply rail collapses during power sequencing |
| No power-supply sequencing requirement | Allows VCCA or VCCB to ramp first-simplifies PMIC coordination in multi-rail mobile power architectures |
| Ioff support for partial-power-down mode | Blocks off-state current flow between powered and unpowered sections-critical for battery-backed subsystems |
Applications
| Smartphone I²C Peripheral Interface | Tablet GPIO Voltage Translation |
|---|---|
Use Scenario: Interfacing a 1.8V application processor I²C controller with 3.3V touch controller or sensor. IC Role / Device Role / Timing Role: Bidirectional level translator enabling clock/data line compatibility across voltage domains without direction control. Use Value: Eliminates external pullups and direction logic while maintaining 1MHz I²C timing compliance under varying load conditions. |
Use Scenario: Expanding 1.8V SoC GPIOs to drive 5V display backlight controls or 3.3V audio codecs. IC Role / Device Role / Timing Role: Voltage translator for push-pull GPIO signals requiring fast edge rates and low static current. Use Value: Supports 24Mbps toggle rate and integrates pullups-reducing BOM count and PCB area in thin-profile tablet designs. |
| Laptop Embedded Controller Bridge | Wearable Sensor Hub Interface |
Use Scenario: Connecting a 3.3V embedded controller (EC) to 1.8V baseband modem for status signaling. IC Role / Device Role / Timing Role: Low-latency bidirectional translator with VCC isolation to prevent EC reset propagation during modem power cycling. Use Value: Ensures clean signal handover during sleep/wake transitions with <200ns enable/disable timing and zero sequencing dependency. |
Use Scenario: Level-shifting between a 2.5V wearable SoC and 5V environmental sensor cluster with open-drain alerts. IC Role / Device Role / Timing Role: Auto-sensing translator handling mixed push-pull and open-drain signals on shared bus lines. Use Value: Delivers 2Mbps open-drain performance with integrated 10kΩ pullups-reducing component count and layout sensitivity in miniaturized sensor modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0102DCKT | 2-channel version with identical per-channel specs, same SC70-6 package, and shared OE control | Used when two independent bidirectional signals require translation in same footprint | Select TXS0102DCKT only if dual-channel consolidation reduces total component count and routing congestion |
| TXB0101DCKR | Active-drive architecture (no passive pullups); higher drive strength (±20mA); requires direction control (DIR pin) | Suitable for push-pull-only systems needing faster edges or higher current, but adds GPIO and layout complexity | Choose TXB0101DCKR only when push-pull speed >24Mbps or output current >1mA is required-and DIR signal routing is feasible |
Compared with TXS0101DCKT, TXS0102DCKT offers channel density without changing board layout, while TXB0101DCKR trades auto-direction capability for stronger active drive and higher speed-making it appropriate only when direction control is available and passive pullup limitations are unacceptable.
Availability
TXS0101DCKT is available at Aetrix Electronics and suitable for smartphone, tablet, and wearable electronics requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TXS0101DCKT 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 technologies, with decades of expertise in interface solutions and power management ICs.
The TXS0101DCKT belongs to TI's TXS-series voltage translators-designed specifically for space-constrained, low-power, bidirectional logic interfacing in portable consumer electronics where auto-direction sensing and minimal external components are critical.
FAQ
What is the maximum allowable voltage difference between VCCA and VCCB for reliable operation of TXS0101DCKT?
TXS0101DCKT requires VCCA ≤ VCCB at all times during normal operation. While VCCA may temporarily exceed VCCB during power-up without damage, sustained violation causes undefined behavior and potential latch-up. Valid operating pairs include 1.8V/3.3V, 2.5V/5.0V, and 3.3V/5.0V-always ensuring VCCA does not surpass VCCB.
Does TXS0101DCKT support true bidirectional communication on a single data line without external direction control?
Yes, TXS0101DCKT implements auto-direction sensing using internal edge-detection one-shot circuits. It automatically routes signal flow from A to B or B to A based on voltage transitions-no external DIR pin or firmware intervention is needed. This makes TXS0101DCKT ideal for I²C, SMBus, and other bidirectional protocols.
Can TXS0101DCKT be used with 5V-tolerant microcontrollers driving the B port?
Yes, TXS0101DCKT supports VCCB up to 5.5V and tolerates input voltages up to VCCB + 0.5V on the B port. When interfacing with 5V-tolerant MCUs, ensure VCCB = 5.0V and that the MCU's output high voltage meets VOHB ≥ 0.67×VCCB (≥3.35V) and low voltage stays ≤0.15V for reliable recognition by TXS0101DCKT.
How does the integrated 10kΩ pullup resistor affect open-drain timing in TXS0101DCKT?
The internal 10kΩ pullup on each port sets baseline rise time-e.g., with 15pF load, tr ≈ 0.35×RC ≈ 53ns. TXS0101DCKT's one-shot accelerator reduces effective rise time significantly, enabling 2Mbps open-drain operation. For faster edges, external lower-value pullups can be added in parallel-but must be sized to avoid exceeding VOL limits under IOL = 1mA.
Is TXS0101DCKT compatible with I²C Fast Mode (400kHz) and Fast Mode Plus (1MHz)?
Yes, TXS0101DCKT supports I²C Fast Mode Plus (1MHz) under typical conditions: VCCA = 1.8V, VCCB = 3.3V, CL ≤ 400pF. Propagation delays (tPHL/tPLH) remain below 100ns, and rise/fall times meet I²C specifications. System-level validation with actual bus capacitance and pullup configuration is recommended per JEDEC JESD78 latch-up and noise margin requirements.
TXS0101DCKT 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:
- 1
- Voltage - VCCA:
- 1.65 V ~ 3.6 V
- Voltage - VCCB:
- 2.3 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Open Drain, Push-Pull
- Data Rate:
- 24Mbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP, SC-88, SOT-363
TXS0101DCKT FAQ
1.How can I place an order for TXS0101DCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TXS0101DCKT 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 TXS0101DCKT reliable?
The price and inventory of TXS0101DCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXS0101DCKT is usually 5 days.
3.What payment methods are accepted for TXS0101DCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXS0101DCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXS0101DCKT?
TXS0101DCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXS0101DCKT 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 TXS0101DCKT?
For technical support, including TXS0101DCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXS0101DCKT requirements.
6.How does Aetrix verify that TXS0101DCKT is sourced from the original manufacturer or authorized distributors?
All TXS0101DCKT 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 TXS0101DCKT meets industry standards.
7.What is the process for return or replacement of TXS0101DCKT?
All TXS0101DCKT units undergo pre-shipment inspection (PSI). If there is an issue with TXS0101DCKT, 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 TXS0101DCKT part is unused and in its original packaging.
Return procedure for TXS0101DCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TXS0101DCKT Tags
-
74LVC1T45GW,125
Nexperia USA Inc.
-
74LVCH2T45DC,125
Nexperia USA Inc.
-
SN74LVC1T45DBVR
Texas Instruments
-
SN74LVC1T45DRLR
Texas Instruments
-
SN74LVC1T45DPKR
Texas Instruments
-
SN74LVC2T45DCTR
Texas Instruments
-
74LVC2T45GT,115
Nexperia USA Inc.
-
SN74LVC1T45YZPR
Texas Instruments
-
LSF0102DCUR
Texas Instruments
-
SN74LVC1T45DCKR
Texas Instruments
-
TXS0102DCTR
Texas Instruments
-
FXLP34P5X
onsemi
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
