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Texas Instruments TCA39416DDFR
- Part No.:
- TCA39416DDFR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TCA39416DDFR.pdf
- Description:
- ULTRA-LOW-VOLTAGE I3C TRANSLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:808
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Product details
Overview
TCA39416DDFR from Texas Instruments is a 2-bit ultra-low-voltage bidirectional I³C/I²C/SMBus/SPI voltage-level translator with rise/fall time accelerators and internal 10-kΩ pull-up resistors. It operates from 0.72 V to 1.98 V on both A and B ports (VCCA ≤ VCCB), supports up to 12.5 MHz I³C SDR and 25 Mbps HDR-DDR, and enables logic-level bridging between 1.2-V peripherals and 1.8-V processors in wearables and server subsystems.
For engineers reviewing the TCA39416DDFR datasheet, TCA39416DDFR pinout, TCA39416DDFR application, or TCA39416DDFR equivalent, key selection criteria include its directionless architecture, VCCA/VCCB supply constraint, OE-referenced-to-VCCA control, RTA/FTA edge acceleration, and dual-package availability (X2SON-8 and SOT-23-T-8).
Technical Context
The TCA39416DDFR uses an auto-direction-sensing N-channel pass-gate topology with gate bias tied to the lower supply (VCCA), enabling seamless bidirectional translation without a direction pin. Its rise/fall time accelerators (RTA/FTA) dynamically reduce output impedance to ~150 Ω during signal transitions to maintain timing integrity under capacitive loads.
It implements MIPI I³C v1.1.1 compliance-including dynamic pull-up management-and supports JEDEC JESD403 sideband bus operation. The device enters high-impedance state when OE = 0 V or either VCCA/VCCB = 0 V, with no power-supply sequencing required and <2.5 µA IOFF at 0 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range (A/B) | 0.72 V to 1.98 V per port; VCCA must be ≤ VCCB for correct pass-gate biasing and translation directionality |
| I³C Speed Support | 12.5 MHz SDR / 25 Mbps HDR-DDR; meets MIPI I³C v1.1.1 timing requirements for push-pull and open-drain modes |
| Rise/Fall Acceleration | RTA/FTA circuits reduce tPLH/tPHL to ≤5 ns (1.8 V) and enable fast edge rates on capacitive buses up to 15 pF |
| Internal Pull-ups | 10-kΩ resistors on all Ax/Bx pins, enabled only when respective VCC > UVLO threshold and OE = high; act as high-keepers |
| OE Input Reference | Referenced to VCCA, 1.98-V tolerant; drives outputs to high-Z when low, disabling RTA/FTA and pull-ups |
| Quiescent Current | ICCA + ICCB = 6 µA typical at 1.98 V; IOFF = 2.5 µA when either VCCA or VCCB = 0 V |
| ESD Robustness | ±4000 V HBM, ±1500 V CDM; exceeds JESD22-A114-B and JESD22-C101 for board-level reliability |
Pinout & Package
The TCA39416DDFR is available in two RoHS-compliant packages: X2SON-8 (1.0 mm × 1.35 mm) and SOT-23-T-8 (2.9 mm × 2.8 mm). Both are 8-pin surface-mount devices with identical pinout and thermal performance optimized for space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2 | Bi-directional I/O (A-side) | Logic interface referenced to VCCA; accepts 0.72–1.98 V signals; internal 10-kΩ pull-up to VCCA |
| B1, B2 | Bi-directional I/O (B-side) | Logic interface referenced to VCCB; accepts 0.72–1.98 V signals; internal 10-kΩ pull-up to VCCB |
| VCCA | Power supply (A-port) | Supplies A-side circuitry and sets gate bias for pass-FET; must be ≤ VCCB |
| VCCB | Power supply (B-port) | Supplies B-side circuitry; determines output drive strength and pull-up reference |
| GND | Ground reference | Common return path for both sides; required for proper RTA/FTA operation and ESD discharge |
| OE | Output enable input | Active-high control referenced to VCCA; forces all Ax/Bx pins into high-Z when low |
Key Features
| Feature | Design Value |
|---|---|
| No direction pin required | Auto-direction sensing via pass-gate gate-bias architecture eliminates external control logic and PCB routing overhead |
| VCC isolation | Both A and B ports enter high-Z if either VCCA or VCCB = 0 V-prevents back-powering and ensures safe power sequencing |
| Rise/fall time acceleration | RTA/FTA circuits cut propagation delay by up to 60% vs. passive translators, enabling 25 Mbps HDR-DDR I³C operation |
| Integrated 10-kΩ pull-ups | Eliminates four external resistors per channel; high-keeper behavior maintains bus state during idle without leakage |
| Low IOFF current | 2.5 µA max when powered off-critical for battery-powered wearables and always-on sensor nodes |
Applications
| Mobile Sensor Hub Interface | Server Baseboard Management |
|---|---|
Use Scenario: Interfacing 1.2-V I³C sensors (accelerometer, gyroscope) to a 1.8-V application processor in a smartwatch. IC Role / Device Role / Timing Role: Bidirectional level translator enabling SDA/SCL signal translation with sub-5 ns propagation delay and dynamic pull-up control per MIPI I³C spec. Use Value: Eliminates discrete resistor networks and direction-control logic, reducing BOM count by 6 components and PCB area by >1.5 mm². | Use Scenario: Connecting 1.0-V I²C temperature sensors and fan controllers to a 1.8-V BMC (Baseboard Management Controller) in a 1U rack server. IC Role / Device Role / Timing Role: Voltage translator supporting SMBus alert response and hot-swap monitoring with VCC isolation to prevent backfeed during partial power-down. Use Value: Enables independent power domain sequencing and reduces system-level fault propagation risk during maintenance cycles. |
| Wearable Display Subsystem | Industrial Edge Node |
Use Scenario: Bridging 0.8-V OLED display controller I³C bus to 1.2-V microcontroller in an AR glasses module. IC Role / Device Role / Timing Role: Ultra-low-voltage translator maintaining 12.5 MHz I³C SDR timing while operating below 1.0 V on both sides. Use Value: Supports aggressive power gating of display subsystem without compromising bus responsiveness or requiring external level-shifting ICs. | Use Scenario: Isolating 1.8-V industrial PLC I/O expander (I²C) from 3.3-V host MCU using level translation with robust ESD protection. IC Role / Device Role / Timing Role: Translator with ±4000 V HBM ESD rating and latch-up immunity >100 mA-meets IEC 61000-4-2 Level 4 requirements. Use Value: Reduces need for external TVS diodes and improves field reliability in electrically noisy factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I³C/I²C voltage translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9306DCUR | 2-bit I²C-only translator; no I³C support, no RTA/FTA, no internal pull-ups, 1.2–3.6 V range | Limited to legacy I²C systems; cannot support I³C HDR-DDR or dynamic pull-up switching | Choose PCA9306DCUR only for cost-sensitive, non-I³C designs where edge acceleration and MIPI compliance are unnecessary |
| TCA9617ADGKR | 2-channel I²C buffer with active drive; supports 1.65–5.5 V, includes bus capacitance boost, no I³C mode | Designed for long-bus or high-capacitance I²C applications; lacks VCC isolation and ultra-low-voltage operation | Select TCA9617ADGKR when driving >400 pF bus loads or extending I²C distance beyond 1 m-unsuitable for sub-1.0 V wearables |
Compared with PCA9306DCUR and TCA9617ADGKR, the TCA39416DDFR uniquely delivers MIPI I³C v1.1.1 compliance, sub-1.0 V operation, integrated RTA/FTA acceleration, and VCC-isolation safety-making it the only viable option for next-generation low-power, high-speed sensor interfaces.
Availability
TCA39416DDFR is available at Aetrix Electronics and suitable for mobile sensor hubs, server baseboard management, wearable display subsystems, and industrial edge nodes requiring stable component supply across extended product lifecycles.
Supply support for TCA39416DDFR 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 with focus on power efficiency, reliability, and system integration.
The TCA39416DDFR belongs to TI's Switch-family of voltage translators, engineered specifically for MIPI I³C and multi-standard serial bus interoperability in ultra-low-power portable and infrastructure electronics.
FAQ
What is the maximum supported data rate for TCA39416DDFR in I³C High Data Rate (HDR-DDR) mode?
The TCA39416DDFR supports up to 25 Mbps in I³C HDR-DDR mode, achieved by sampling data on both edges of the SCL clock. This capability is explicitly validated in the datasheet's Section 7.1 and Table 5.7, where fdata is specified as 26 Mbps maximum under test conditions. The TCA39416DDFR achieves this using its integrated rise/fall time accelerators to maintain signal integrity at high edge rates.
Can TCA39416DDFR operate with VCCA = 1.8 V and VCCB = 1.2 V?
No, the TCA39416DDFR requires VCCA ≤ VCCB for correct pass-gate biasing and functional operation. Setting VCCA = 1.8 V and VCCB = 1.2 V violates the absolute requirement stated in Sections 3, 5.3, and 7.1 of the datasheet and will result in undefined translation behavior or failure. Valid configurations include VCCA = 1.2 V / VCCB = 1.8 V or VCCA = VCCB = 1.8 V.
Does TCA39416DDFR require external pull-up resistors for I³C bus operation?
No, the TCA39416DDFR includes internal 10-kΩ pull-up resistors on all A1, A2, B1, and B2 pins, which act as high-keepers when enabled. These resistors are automatically activated when their respective VCC supply exceeds the UVLO rising threshold and OE is high. External pull-ups are not required unless system-level bus capacitance or timing margins demand stronger drive-per Section 7.3.3 and Figure 7-1.
How does the OE pin function on TCA39416DDFR, and what is its voltage tolerance?
The OE pin on TCA39416DDFR is an active-high output enable referenced to VCCA. When pulled low, it places all Ax and Bx pins in high-impedance state and disables RTA/FTA circuits and internal pull-ups. It is 1.98-V tolerant, allowing direct connection to VCCA even when VCCA is at maximum rated voltage-confirmed in Section 3 and Table 4-1 of the datasheet.
Is TCA39416DDFR compatible with JEDEC JESD403 sideband bus specification?
Yes, the TCA39416DDFR is explicitly stated in Section 1 (Features) and Section 7.1 to be compatible with the JEDEC I³C module sideband bus specification JESD403. This compatibility ensures interoperability with standardized I³C peripheral modules used in memory, sensor, and PMIC applications across mobile and server platforms.
TCA39416DDFR 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:
- 0.72 V ~ 1.98 V
- Voltage - VCCB:
- 0.72 V ~ 1.98 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State
- Data Rate:
- 26Mbps
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8 Thin, TSOT-23-8
TCA39416DDFR FAQ
1.How can I place an order for TCA39416DDFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TCA39416DDFR 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 TCA39416DDFR reliable?
The price and inventory of TCA39416DDFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCA39416DDFR is usually 5 days.
3.What payment methods are accepted for TCA39416DDFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCA39416DDFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCA39416DDFR?
TCA39416DDFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCA39416DDFR 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 TCA39416DDFR?
For technical support, including TCA39416DDFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCA39416DDFR requirements.
6.How does Aetrix verify that TCA39416DDFR is sourced from the original manufacturer or authorized distributors?
All TCA39416DDFR 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 TCA39416DDFR meets industry standards.
7.What is the process for return or replacement of TCA39416DDFR?
All TCA39416DDFR units undergo pre-shipment inspection (PSI). If there is an issue with TCA39416DDFR, 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 TCA39416DDFR part is unused and in its original packaging.
Return procedure for TCA39416DDFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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