My Inquiry
My Account
Texas Instruments TXB0101DCKTG4
- Part No.:
- TXB0101DCKTG4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXB0101DCKTG4.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,947
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TXB0101DCKTG4 from Texas Instruments is a 1-bit bidirectional voltage translator with auto direction-sensing, supporting 1.2V–3.6V on A port and 1.65V–5.5V on B port (VCCA ≤ VCCB), ±15 kV HBM ESD protection on B port, 100 Mbps max data rate at 3.3V/5V, and Ioff partial-power-down capability. It enables level-shifting between low-voltage logic domains in portable consumer interfaces.
For engineers reviewing the TXB0101DCKTG4 datasheet, TXB0101DCKTG4 pinout, TXB0101DCKTG4 application, or TXB0101DCKTG4 equivalent, this page delivers verified electrical specs, SC70-6 package details, real-world use cases in handheld devices, and validated alternative parts for voltage translation design-in.
Technical Context
The TXB0101DCKTG4 uses edge-accelerated buffered architecture with dual one-shot circuits per I/O path to enhance rise/fall times without external direction control. Its auto-sensing operation relies on weak DC output drivers that are overdriven by opposing-side signals during bidirectional transitions.
VCCA-referenced OE input controls 3-state mode; VCC isolation ensures high-impedance outputs when either supply is at GND. The device supports push-pull CMOS only - not open-drain buses like I²C - and requires external pull resistors >50 kΩ if used on resistive-loaded lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| A-port voltage range | 1.2V to 3.6V - enables interface between 1.2V/1.5V/1.8V/2.5V/3.3V systems |
| B-port voltage range | 1.65V to 5.5V - supports translation to 1.8V/2.5V/3.3V/5V domains with VCCA ≤ VCCB constraint |
| Max data rate | 100 Mbps - achieved at VCCA = 3.3V ± 0.3V and VCCB = 3.3V or 5V, enabling high-speed serial links |
| ESD protection (B port) | ±15 kV HBM - meets IEC 61000-4-2 Level 4 for robustness in handheld end-equipment |
| Ioff current | ±1 μA max - prevents backflow during partial power-down, critical for battery-powered system sleep modes |
| Propagation delay (A→B) | 0.9–4.7 ns - varies with VCCA/VCCB; 0.9 ns typical at 3.3V/3.3V, ensuring tight timing margins |
| Quiescent current | 5 μA max ICC - ultra-low static power ideal for always-on signal paths in mobile SoC interconnects |
Pinout & Package
TXB0101DCKTG4 is packaged in a 6-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained portable PCBs. Thermal resistance RθJA is 266.9°C/W, requiring minimal copper pour for thermal management in ambient temperatures up to +85°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VCCA | A-port supply rail | Reference for A-side I/O and OE input; must be ≤ VCCB and within 1.2V–3.6V range |
| 2: GND | Common ground reference | Single ground connection shared by both ports; no separate analog/digital GND required |
| 3: A | Bidirectional I/O (A side) | CMOS-compatible signal path referenced to VCCA; supports auto-direction sensing |
| 4: B | Bidirectional I/O (B side) | CMOS-compatible signal path referenced to VCCB; handles higher voltages up to 5.5V |
| 5: OE | Output enable input | Active-high, VCCA-referenced control; drives all I/Os into high-impedance when low |
| 6: VCCB | B-port supply rail | Reference for B-side I/O; accepts 1.65V–5.5V and must be ≥ VCCA |
Key Features
| Feature | Design Value |
|---|---|
| Auto direction-sensing architecture | Eliminates need for external direction-control logic or GPIO, reducing BOM count and routing complexity |
| VCC isolation | Guarantees high-impedance outputs when either VCCA or VCCB is at GND - prevents bus contention during power sequencing |
| NanoFree™ packaging | Die-as-package construction minimizes footprint and parasitic inductance, improving signal integrity at 100 Mbps |
| Edge-accelerated switching | One-shot circuits reduce rise/fall times (e.g., 0.7 ns trA at 3.3V), enabling clean transitions across voltage domains |
| ±15 kV HBM ESD on B port | Enables direct integration into exposed I/O paths of smartphones/tablets without additional transient protection |
Applications
| Smartphone Baseband-to-PMIC Interface | Tablet SoC-to-Display Timing Controller |
|---|---|
Use Scenario: Translating 1.8V GPIO and reset signals from an application processor to a 3.3V power management IC in a slim smartphone form factor. IC Role / Device Role / Timing Role: Bidirectional voltage translator enabling push-pull control of PMIC registers and status lines without direction pins. Use Value: Eliminates discrete level-shifter arrays and saves >1.5 mm² PCB area using SC70-6 footprint while maintaining 100 Mbps timing margin. |
Use Scenario: Interfacing a 1.2V MIPI D-PHY clock lane from a tablet SoC to a 2.5V display timing controller with strict ESD requirements. IC Role / Device Role / Timing Role: Low-capacitance (11–14.5 pF B-port), high-ESD-tolerance translator preserving signal edge rates for sub-ns timing alignment. Use Value: Delivers ±15 kV HBM protection on B port and <1 ns propagation skew, meeting MIPI compliance for display link reliability. |
| Laptop Touch Controller Interface | Industrial Handheld Data Logger |
Use Scenario: Connecting a 3.3V capacitive touch controller to a 1.5V microcontroller in a Windows laptop hinge-mounted sensor module. IC Role / Device Role / Timing Role: Asymmetric voltage translator supporting 3.3V→1.5V and 1.5V→3.3V bidirectional communication on I²C-like control lines (non-open-drain). Use Value: Enables seamless integration without protocol-aware translators; Ioff support allows MCU sleep mode without leakage through touch interface. |
Use Scenario: Isolating 5V RS-232 level signals from a legacy industrial sensor module to a 1.8V ARM Cortex-M4 host in a battery-operated field logger. IC Role / Device Role / Timing Role: High-voltage-tolerant B-port translator handling 5V inputs while driving 1.8V logic, with VCC isolation preventing fault propagation during brownout. Use Value: Reduces system-level failure risk during intermittent power loss; 5 μA ICC enables >10-year battery life in always-on monitoring mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level-shifting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0101DCKR | Open-drain architecture with stronger pull-up drive; no VCC isolation; lower max data rate (60 Mbps at 1.8V) | Required for I²C, SMBus, or 1-Wire where bus arbitration depends on passive pull-ups | Select TXS0101DCKR only when interfacing true open-drain protocols; TXB0101DCKTG4 is superior for push-pull GPIO, reset, or clock lines. |
| SN74AVC1T45DBVR | Direction-controlled (DIR pin required); higher drive strength (24 mA); no auto-sensing; 5.5V tolerant inputs only on B port | Suitable for fixed-direction data paths where board space allows DIR routing and higher current is needed | Choose SN74AVC1T45DBVR when deterministic unidirectional flow justifies added control pin; TXB0101DCKTG4 saves routing and simplifies firmware. |
Compared with TXS0101DCKR and SN74AVC1T45DBVR, TXB0101DCKTG4 uniquely combines auto-direction sensing, VCC isolation, and ±15 kV B-port ESD - making it optimal for compact, high-reliability push-pull interfaces in portable electronics where pin count and robustness are critical.
Availability
TXB0101DCKTG4 is available at Aetrix Electronics and suitable for smartphone baseband interfaces, tablet display controllers, laptop touch modules, and industrial handheld data loggers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TXB0101DCKTG4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TXB0101 family is designed specifically for low-voltage, space-constrained bidirectional logic translation in portable consumer devices - emphasizing auto-sensing operation, ultra-low power, and high ESD resilience without direction-control overhead.
FAQ
What is the maximum supported data rate for TXB0101DCKTG4?
The TXB0101DCKTG4 supports up to 100 Mbps when operating with VCCA = 3.3V ± 0.3V and VCCB = 3.3V or 5V. At lower VCCA (e.g., 1.2V), the max data rate drops to 20 Mbps. These values are measured under recommended operating conditions and reflect guaranteed performance across –40°C to +85°C.
Does TXB0101DCKTG4 support I²C or other open-drain protocols?
No, TXB0101DCKTG4 does not support I²C or other open-drain protocols. Its architecture is optimized for push-pull CMOS signals only. For I²C, SMBus, or 1-Wire, Texas Instruments recommends the TXS0101 series, which features open-drain outputs and integrated strong pull-ups.
What is the meaning of VCCA ≤ VCCB in TXB0101DCKTG4 operation?
VCCA ≤ VCCB is a hard operational constraint for TXB0101DCKTG4: the A-port supply voltage must never exceed the B-port supply voltage. This ensures correct internal biasing and prevents latch-up. For example, 1.8V A-port may connect to 3.3V or 5V B-port, but not to 1.2V B-port.
How does the OE pin function on TXB0101DCKTG4?
The OE (output enable) pin on TXB0101DCKTG4 is active-high and referenced to VCCA. When OE is low, all I/Os enter high-impedance state within 392 ns (typical tdis). When OE is high, the device enables bidirectional translation after ~1 μs (ten). To ensure Hi-Z during power-up, tie OE to GND via a pulldown resistor.
Can TXB0101DCKTG4 be used with 5V-tolerant microcontrollers?
Yes - the B port of TXB0101DCKTG4 accepts up to 5.5V and provides 5V tolerance, making it compatible with 5V-tolerant microcontrollers. However, the A port is limited to 3.6V max, so pairing with 5V-only logic requires level-shifting on the A side or using the B port as the high-voltage domain.
TXB0101DCKTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 1
- Voltage - VCCA:
- 1.2 V ~ 3.6 V
- Voltage - VCCB:
- 1.65 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- 100Mbps
- 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
TXB0101DCKTG4 FAQ
1.How can I place an order for TXB0101DCKTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TXB0101DCKTG4 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 TXB0101DCKTG4 reliable?
The price and inventory of TXB0101DCKTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXB0101DCKTG4 is usually 5 days.
3.What payment methods are accepted for TXB0101DCKTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXB0101DCKTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXB0101DCKTG4?
TXB0101DCKTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXB0101DCKTG4 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 TXB0101DCKTG4?
For technical support, including TXB0101DCKTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXB0101DCKTG4 requirements.
6.How does Aetrix verify that TXB0101DCKTG4 is sourced from the original manufacturer or authorized distributors?
All TXB0101DCKTG4 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 TXB0101DCKTG4 meets industry standards.
7.What is the process for return or replacement of TXB0101DCKTG4?
All TXB0101DCKTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TXB0101DCKTG4, 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 TXB0101DCKTG4 part is unused and in its original packaging.
Return procedure for TXB0101DCKTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TXB0101DCKTG4 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…
