My Inquiry
My Account
Texas Instruments TXS0101DCKR
- Part No.:
- TXS0101DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXS0101DCKR.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,637
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TXS0101DCKR from Texas Instruments is a 1-bit bidirectional voltage-level translator with auto-direction sensing, designed for open-drain and push-pull logic interfaces between 1.65V–3.6V (A port) and 2.3V–5.5V (B port) domains. It features integrated 10kΩ pullups on both ports, VCC isolation, no power-supply sequencing requirement, and supports up to 24Mbps in push-pull mode. It is used in mobile device interconnects such as 1.8V application processors communicating with 3.3V peripherals.
For engineers reviewing the TXS0101DCKR datasheet, TXS0101DCKR pinout, TXS0101DCKR application, or TXS0101DCKR equivalent, this page delivers verified electrical parameters, SC70-6 package details, real-world timing behavior under varying VCCA/VCCB conditions, ESD robustness data per JESD22, and validated alternative parts for level-shifting design trade-offs.
Technical Context
The TXS0101DCKR implements a pass-gate architecture with edge-rate-accelerating one-shot circuits on both A and B ports to enhance low-to-high transition speed without external direction control. Its dual-rail design enables true bidirectional translation while maintaining VCCA ≤ VCCB operational constraint.
It integrates 10kΩ pullup resistors to VCCA on A-port I/Os and to VCCB on B-port I/Os-eliminating external components in open-drain systems. The OE input, referenced to VCCA, places all I/Os in high-impedance state when low, with 200ns enable/disable times independent of supply voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 1.65V to 3.6V - sets minimum logic high threshold and powers OE input and A-port internal circuitry |
| VCCB Range | 2.3V to 5.5V - defines B-port output swing and maximum compatible host voltage (e.g., 5V GPIO) |
| Max Data Rate (Push-Pull) | 24Mbps - achievable with VCCA = 3.3V ± 0.3V and VCCB = 5V ± 0.5V, enabling USB 1.1 or I²C Fast-mode Plus signaling |
| Max Data Rate (Open-Drain) | 2Mbps - sustained with 10kΩ internal pullups active, suitable for standard I²C at 400kHz with margin |
| Propagation Delay (B→A, Push-Pull) | 2.5ns typical at VCCA = 3.3V, VCCB = 3.3V - ensures sub-ns timing alignment critical for synchronous bus handshaking |
| ESD (B Port, HBM) | ±8kV - exceeds JEDEC JS-001 Class 3A, supporting direct integration into handheld front-end interfaces |
| IOFF Current | ±2µA max - enables partial power-down operation during system sleep modes without signal leakage |
Pinout & Package
TXS0101DCKR is packaged in SC70-6 (DCK), measuring 2.0mm × 2.1mm with 0.65mm pitch, optimized for space-constrained mobile PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA | A-port supply input | Reference rail for A-port I/Os and OE logic; must be ≤ VCCB; powers internal 10kΩ pullups to A side |
| GND | Ground reference | Common return for both ports; required for proper biasing of pass-gate transistors and ESD protection network |
| A | Bidirectional data I/O (A side) | Connects to 1.65V–3.6V domain; internally pulled up to VCCA; senses direction automatically |
| B | Bidirectional data I/O (B side) | Connects to 2.3V–5.5V domain; internally pulled up to VCCB; responds to A-side transitions without control signals |
| OE | Output enable input | Active-high control referenced to VCCA; drives all I/Os to high-Z when low; requires pull-down for power-up safety |
| VCCB | B-port supply input | Reference rail for B-port I/Os; accepts higher voltages than VCCA; enables translation to 5V logic levels |
Key Features
| Feature | Design Value |
|---|---|
| No direction-control signal required | Auto-sensing pass-gate architecture eliminates external control lines and timing constraints in bidirectional buses like I²C |
| VCC isolation | Both ports enter high-impedance state if either VCCA or VCCB is at GND - prevents back-powering and ensures safe hot-plug behavior |
| No power-supply sequencing | VCCA or VCCB may ramp first without damage - simplifies PMIC sequencing in multi-rail SoC designs |
| Integrated 10kΩ pullups | Eliminates external resistors on both A and B ports in open-drain applications, reducing BOM count and board area |
| IOFF support | Sub-µA leakage during partial power-down allows retention of signal integrity while core logic sleeps |
Applications
| Mobile Application Processor Interface | I²C Bus Level Translation |
|---|---|
Use Scenario: Interfacing a 1.8V ARM-based application processor with a 3.3V camera sensor module over a shared bidirectional data line. IC Role / Device Role / Timing Role: Bidirectional voltage translator enabling clock/data exchange between mismatched I/O voltage domains without direction control overhead. Use Value: Eliminates need for external direction logic and pullup resistors; supports 400kHz I²C Fast-mode with guaranteed VOL ≤ 0.4V at 1mA load. |
Use Scenario: Translating I²C signals between a 2.5V microcontroller and a 5V EEPROM in a tablet's power management subsystem. IC Role / Device Role / Timing Role: Auto-direction-sensing level shifter handling open-drain SDA/SCL lines with integrated 10kΩ pullups to VCCB (5V). Use Value: Reduces component count by two external resistors; maintains 2Mbps open-drain capability with <2µs tPLH/tPHL at 5V VCCB. |
| USB OTG ID Pin Detection | Low-Voltage Sensor Hub Interface |
Use Scenario: Detecting USB OTG role (host/peripheral) via ID pin voltage level (0V vs 3.3V) on a 1.8V SoC GPIO. IC Role / Device Role / Timing Role: Single-bit translator converting 3.3V ID pin state to 1.8V-compatible logic level with VCC isolation for fault containment. Use Value: Prevents back-current flow when VCCA is unpowered; guarantees VIH ≥ 1.65V at A port with VCCA = 1.8V and VCCB = 3.3V. |
Use Scenario: Connecting multiple 1.8V environmental sensors (temperature, humidity) to a 3.3V system controller via shared I²C bus. IC Role / Device Role / Timing Role: Bidirectional translator enabling mixed-voltage sensor hub architecture with automatic direction resolution per transaction. Use Value: Supports concurrent read/write operations across voltage domains; maintains VOL ≤ 0.4V at 1mA even with worst-case process/temp corners. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level-shifting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXB0101RGTR | Active-drive push-pull outputs; no internal pullups; requires external direction control or bus arbitration logic | Better suited for high-speed push-pull buses (e.g., SPI) where deterministic direction is known; not ideal for I²C | Select when >24Mbps push-pull performance is needed and direction can be controlled externally |
| PCA9306DCUR | Passive FET-based translator; no internal pullups; requires external 10kΩ–100kΩ pullups on both sides; lower quiescent current (1µA) | Preferred for ultra-low-power I²C applications where static current matters more than board area | Select when minimizing standby current is critical and external resistor placement is acceptable |
Compared with TXS0101DCKR, TXB0101RGTR offers higher speed but adds complexity via direction control, while PCA9306DCUR reduces static power at the cost of two external resistors and reduced noise immunity due to lack of edge acceleration.
Availability
TXS0101DCKR is available at Aetrix Electronics and suitable for mobile handset design, smartphone peripheral interfacing, and tablet sensor hub integration requiring stable component supply across extended production lifecycles.
Supply support for TXS0101DCKR 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 company specializing in analog and embedded processing technologies, with leadership in interface, power management, and signal chain solutions.
The TXS0101DCKR belongs to TI's voltage translation portfolio, engineered specifically for space-constrained, low-power mobile applications requiring seamless interoperability between mixed-voltage digital subsystems.
FAQ
What is the maximum allowable voltage difference between VCCA and VCCB for reliable operation of TXS0101DCKR?
TXS0101DCKR requires VCCA ≤ VCCB at all times during normal operation. The absolute maximum ratings allow VCCA up to 4.6V and VCCB up to 6.5V independently, but functional operation mandates VCCA no greater than VCCB. For example, VCCA = 3.3V and VCCB = 3.3V is valid; VCCA = 3.3V and VCCB = 2.5V violates the specification and may cause undefined behavior or damage.
Does TXS0101DCKR support I²C Fast-mode Plus (1Mbps) in open-drain configuration?
TXS0101DCKR supports up to 2Mbps in open-drain mode per datasheet Section 5.9, which exceeds I²C Fast-mode Plus (1Mbps) requirements. At VCCA = 1.8V and VCCB = 5V, tPLH/tPHL remain within 270ns/102ns respectively, ensuring timing compliance with standard I²C rise-time specifications when loaded with 400pF bus capacitance.
Can TXS0101DCKR be used with VCCA = 1.65V and VCCB = 5.5V simultaneously?
Yes - TXS0101DCKR is fully specified for VCCA = 1.65V to 3.6V and VCCB = 2.3V to 5.5V, with VCCA ≤ VCCB. At these extremes, VOHB remains ≥ 3.7V (VCCB × 0.67) and VOLB ≤ 0.4V at 1mA, satisfying 5V logic thresholds while interfacing with 1.65V-core processors.
How does the internal 10kΩ pullup on the B port affect rise time in open-drain applications?
The internal 10kΩ pullup to VCCB sets the RC-limited rise time baseline. With 15pF total load (per Figure 6-2), trB ≈ 100ns typical - sufficient for 2Mbps. If faster rise is needed, an external lower-value pullup (e.g., 4.7kΩ) can be added in parallel, reducing effective resistance and improving edge rate without violating VOL specs.
Is TXS0101DCKR latch-up immune per JESD78 Class II?
Yes - TXS0101DCKR exceeds 100mA latch-up immunity per JESD78 Class II, verified during qualification testing. This ensures robustness against transient current surges caused by I/O contention or supply glitches in densely packed mobile PCB layouts.
TXS0101DCKR 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
TXS0101DCKR FAQ
1.How can I place an order for TXS0101DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TXS0101DCKR 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 TXS0101DCKR reliable?
The price and inventory of TXS0101DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXS0101DCKR is usually 5 days.
3.What payment methods are accepted for TXS0101DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXS0101DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXS0101DCKR?
TXS0101DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXS0101DCKR 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 TXS0101DCKR?
For technical support, including TXS0101DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXS0101DCKR requirements.
6.How does Aetrix verify that TXS0101DCKR is sourced from the original manufacturer or authorized distributors?
All TXS0101DCKR 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 TXS0101DCKR meets industry standards.
7.What is the process for return or replacement of TXS0101DCKR?
All TXS0101DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TXS0101DCKR, 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 TXS0101DCKR part is unused and in its original packaging.
Return procedure for TXS0101DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TXS0101DCKR 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…
