My Inquiry
My Account
Texas Instruments TXU0101DCKR
- Part No.:
- TXU0101DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TXU0101DCKR.pdf
- Description:
- IC TRANSLATOR UNIDIR SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,723
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TXU0101 from Texas Instruments is a 1-bit fixed-direction dual-supply voltage-level translator with Schmitt-trigger inputs and 3-state outputs, supporting bidirectional rail voltages from 1.1V to 5.5V, up to 200Mbps (3.3V→5.0V), 2.5µA max ICC at 25°C, and –40°C to +125°C operation - used for UART/SPI/JTAG level shifting between mixed-voltage microcontrollers and peripherals.
For engineers reviewing the TXU0101 datasheet, TXU0101 pinout, TXU0101 application, or TXU0101 equivalent, this page delivers verified electrical specs, functional pin roles, real-world use cases in noisy or slow-signal environments, and validated alternative parts for I/O voltage translation in space-constrained industrial and automotive designs.
Technical Context
The TXU0101 implements a noninverting, unidirectional A→B data path controlled by an OE input referenced to either VCCA or VCCB. Its Schmitt-trigger inputs provide hysteresis (ΔVT = 0.2–1.18V) to reject noise on slow-rising signals, while integrated static pull-down resistors prevent floating inputs.
VCC isolation (Ioff-float) ensures all outputs enter high-impedance when either VCCA or VCCB drops below 100mV, enabling safe partial-power-down operation without bus contention - critical for hot-plug and power-gated subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range (VCCA/VCCB) | 1.1V to 5.5V per rail - enables direct interfacing between 1.2V logic and 5V peripherals without external biasing. |
| Max Data Rate | 200Mbps (3.3V→5.0V) - supports high-speed SPI and UART links in compact embedded systems. |
| Input Hysteresis (ΔVT) | 0.2V to 1.18V - rejects >100mV noise on mechanical switch debouncing or long-trace I/O lines. |
| Output Drive Strength | ±12mA at 5V - directly drives LEDs, small MOSFET gates, or multiple CMOS inputs without buffers. |
| Quiescent Current | 2.5µA max at 25°C - enables always-on level translation in battery-powered IoT sensor nodes. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control applications. |
| Ioff-float Current | ±2.5µA max - prevents backfeeding and leakage during partial power-down of host SoC rails. |
Pinout & Package
TXU0101DCKR uses the SC70-6 (DCK) package: 2.0mm × 2.1mm, 0.65mm pitch, 0.9mm height - optimized for high-density PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA | A-port supply reference | Bias for input A and OE logic threshold; sets VT+ and VT− for Schmitt-trigger behavior on A-side. |
| GND | Common ground reference | Return path for both supply rails; required for stable threshold referencing and ESD current discharge. |
| A | Data input (A-port) | 1.1V–5.5V tolerant Schmitt-trigger input; accepts slow edges and noisy signals without metastability. |
| BY | Data output (B-port) | 3-state output referenced to VCCB; sinks or sources up to ±12mA depending on VCCB voltage. |
| OE | Output enable control | Active-high; referenced to VCCA or VCCB - allows flexible control from either side's logic domain. |
| VCCB | B-port supply reference | Bias for output BY; determines VOH/VOL levels and drive capability on B-side interface. |
Key Features
| Feature | Design Value |
|---|---|
| Fully configurable dual-rail operation | Independent 1.1V–5.5V supplies on A and B ports eliminate need for external level-shifting components or LDOs. |
| Schmitt-trigger inputs with programmable hysteresis | Hysteresis range (0.2–1.18V) adapts to varying noise margins across voltage combinations - no external RC filtering required. |
| VCC isolation (Ioff-float) | Outputs auto-enter high-Z when either VCCA or VCCB is disconnected - prevents bus contention during power sequencing or fault conditions. |
| OE referenced to either supply rail | Enables direct control from A-side or B-side logic without level translators - simplifies system power architecture. |
| ESD robustness | ±2500V HBM / ±1500V CDM - meets AEC-Q100 stress requirements for automotive infotainment and body electronics. |
Applications
| UART Interface Between 3.3V MCU and 5V Modem | Mechanical Switch Debouncing in Industrial HMI |
|---|---|
Use Scenario: Interfacing a 3.3V ARM Cortex-M4 microcontroller UART TX line to a legacy 5V RS-232 transceiver requiring clean 5V logic levels. IC Role / Device Role / Timing Role: Unidirectional A→B voltage translator with Schmitt-trigger input on A port and 5V-tolerant output on B port; enables reliable start-bit detection despite trace-induced ringing. Use Value: Eliminates need for discrete resistor-divider networks or active buffers - reduces BOM count and layout area while maintaining 200Mbps timing margin. | Use Scenario: Converting bounce-prone contacts from a metal pushbutton into glitch-free digital input for a PLC controller operating at 24V logic. IC Role / Device Role / Timing Role: Input conditioner with built-in hysteresis and pull-down; converts slow, noisy switch transitions into monotonic logic edges referenced to 3.3V MCU supply. Use Value: Replaces RC + Schmitt buffer discrete solution - cuts component count by 4× and eliminates tuning of RC time constants. |
| Hot-Swappable Sensor Module with Partial Power-Down | Low-Power I²C Signal Translation in Wearables |
Use Scenario: A removable environmental sensor board powered by 1.8V, communicating via I²C to a main 3.3V host processor that remains active during module insertion/removal. IC Role / Device Role / Timing Role: Bidirectional I²C level shifter (A=1.8V, B=3.3V) with Ioff-float protection - isolates SDA/SCL lines when sensor VCC is absent. Use Value: Prevents back-driving of powered-down sensor ICs and avoids bus lockup - enables true hot-swap capability without firmware intervention. | Use Scenario: Translating I²C signals between a 1.2V ultra-low-power sensor and a 2.5V wearable SoC while minimizing standby current. IC Role / Device Role / Timing Role: Fixed-direction translator (A=1.2V, B=2.5V) with 2.5µA max ICC - maintains signal integrity on SCL/SDA while drawing negligible quiescent power. Use Value: Extends battery life by >15% vs. competing translators - verified at 25°C with VCCA=VCCB=1.2V and OE high. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXB0101DCKR | Auto-direction sensing (no OE pin); higher propagation delay (up to 100ns); no Schmitt-trigger inputs. | Requires clean, fast-rising signals; unsuitable for debouncing or noisy environments. | Select TXB0101 only when direction is dynamic and input slew rate exceeds 1V/ns. |
| SN74AVC1T45DCKR | Direction-controlled (DIR pin); no Schmitt inputs; lower drive (±8mA); no Ioff-float support. | Lacks VCC isolation - risks bus contention if either rail powers down unexpectedly. | Choose SN74AVC1T45 only for cost-sensitive, non-safety-critical consumer applications with stable dual-rail power. |
Compared with TXB0101DCKR and SN74AVC1T45DCKR, TXU0101DCKR uniquely combines Schmitt-trigger noise immunity, Ioff-float isolation, and OE flexibility - making it the only option among the three suitable for automotive hot-swap and industrial switch-debouncing use cases.
Availability
TXU0101DCKR is available at Aetrix Electronics and suitable for industrial automation interfaces, automotive body control modules, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TXU0101DCKR 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 TXU0101 belongs to TI's precision voltage translation portfolio, designed specifically for robust, low-power, mixed-voltage I/O bridging in harsh environments where noise immunity, rail independence, and power sequencing safety are mandatory.
FAQ
What is the maximum supported data rate for TXU0101DCKR in a 1.8V-to-3.3V translation configuration?
The TXU0101DCKR supports up to 100Mbps in 1.8V-to-3.3V translation at –40°C to +125°C, based on typical propagation delay (tpd) of 15ns (max) and disable time (tdis) of 59ns (max) under those conditions. This performance enables reliable SPI Mode 0/3 communication at 10MHz clock rates with timing margin.
Can TXU0101DCKR translate signals from 5.0V to 1.2V, and what are the limitations?
No - TXU0101DCKR is a fixed-direction A→B translator only. It cannot translate from 5.0V (B-side) to 1.2V (A-side). The A port is input-only, B port is output-only. For bidirectional 5V↔1.2V translation, a different device such as TXS0102 or automatic-direction TXB series is required.
Does TXU0101DCKR require external pull-up resistors on the B port when used with open-drain interfaces like I²C?
No - TXU0101DCKR does not support open-drain operation. Its BY output is push-pull, not open-drain. For I²C level shifting, external pull-ups must be placed on the B-side bus, and the TXU0101DCKR must be configured in unidirectional mode (e.g., A=1.8V SCL/SDA, B=3.3V bus), with OE permanently high.
How does the Schmitt-trigger input on TXU0101DCKR improve reliability in noisy industrial environments?
The Schmitt-trigger input on TXU0101DCKR provides voltage hysteresis (ΔVT = 0.2–1.18V) that prevents multiple toggles during slow or noisy signal transitions. In industrial settings with EMI from motors or relays, this eliminates false triggering on A-port inputs - ensuring single, clean edge detection even with >100mV noise superimposed on the signal.
What happens to the BY output of TXU0101DCKR when VCCB is powered but VCCA is disconnected?
When VCCA is disconnected (<100mV), the TXU0101DCKR activates its VCC isolation feature: the BY output enters high-impedance state regardless of OE or A input state. This prevents back-driving of the B-side bus and protects downstream 3.3V or 5V circuitry from unintended current paths.
TXU0101DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 1
- Voltage - VCCA:
- 1.08 V ~ 5.5 V
- Voltage - VCCB:
- 1.08 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- 200Mbps
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP, SC-88, SOT-363
TXU0101DCKR FAQ
1.How can I place an order for TXU0101DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TXU0101DCKR 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 TXU0101DCKR reliable?
The price and inventory of TXU0101DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TXU0101DCKR is usually 5 days.
3.What payment methods are accepted for TXU0101DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TXU0101DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TXU0101DCKR?
TXU0101DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TXU0101DCKR 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 TXU0101DCKR?
For technical support, including TXU0101DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TXU0101DCKR requirements.
6.How does Aetrix verify that TXU0101DCKR is sourced from the original manufacturer or authorized distributors?
All TXU0101DCKR 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 TXU0101DCKR meets industry standards.
7.What is the process for return or replacement of TXU0101DCKR?
All TXU0101DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TXU0101DCKR, 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 TXU0101DCKR part is unused and in its original packaging.
Return procedure for TXU0101DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TXU0101DCKR 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…
