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Texas Instruments 74AVC4T245RSVR-NT
- Part No.:
- 74AVC4T245RSVR-NT
- Manufacturer:
- Texas Instruments
- Package:
- 16-UFQFN
- Datasheet:
-
74AVC4T245RSVR-NT.pdf
- Description:
- IC TRANSLATION TXRX 3.6V 16UQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
74AVC4T245RSVR-NT from Texas Instruments is a 4-bit dual-supply noninverting bus transceiver enabling bidirectional voltage translation between 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V logic domains. It features independent VCCA (1.2–3.6V) and VCCB (1.2–3.6V) rails, 4.6V I/O tolerance, Ioff partial-power-down support, and up to 380Mbps data rate (1.8V→3.3V). It is used in low-voltage interconnects between SoCs and peripherals in portable electronics.
For engineers reviewing the 74AVC4T245RSVR-NT datasheet, 74AVC4T245RSVR-NT pinout, 74AVC4T245RSVR-NT application, or 74AVC4T245RSVR-NT equivalent, key selection criteria include dual-rail configurability, 16-pin UQFN (RSV) package compatibility, 3-state output control per channel, Ioff-enabled isolation during power sequencing, and verified 1.2V-to-3.3V translation performance.
Technical Context
The device implements two independent 2-bit bidirectional channels, each with dedicated DIR and OE controls referenced to VCCA. Directional data flow (A↔B) is determined per channel by DIR state while OE enables/disables outputs into high-impedance mode - both control inputs are always powered by VCCA, decoupling control logic from B-port voltage.
Its fully configurable dual-rail architecture supports asynchronous translation without clocking; Ioff circuitry disables I/Os when either VCCA or VCCB is at GND, preventing backflow current. VCC isolation ensures both ports enter high-Z if either supply is unpowered, critical for hot-swap and mixed-voltage system reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA / VCCB Range | 1.2V to 3.6V each - enables translation across all common low-voltage nodes (1.2V/1.5V/1.8V/2.5V/3.3V) without level-shifter redesign. |
| Max Data Rate | 380Mbps (1.8V→3.3V) - supports high-speed interfaces like SDIO, eMMC, or low-latency sensor buses. |
| I/O Voltage Tolerance | 4.6V - allows safe interfacing with legacy 3.3V or 5V systems without external clamping diodes. |
| Ioff Current | ±1μA max - ensures negligible leakage during partial power-down, preserving battery life in portable devices. |
| ESD Protection | 8kV HBM, 150V MM, 1kV CDM - meets industrial-grade robustness requirements for handheld and embedded applications. |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial and consumer operating environments. |
| Propagation Delay | 2.6–3.6ns (typ, VCCA=3.3V/VCCB=2.5V) - enables timing-critical designs with sub-4ns channel latency. |
Pinout & Package
74AVC4T245RSVR-NT uses a 16-pin UQFN package (RSV), measuring 2.6mm × 1.8mm with wettable flanks and an exposed thermal pad. Pin numbering follows standard top-view orientation with pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction-control input (per channel) | Determines data flow direction: HIGH = A→B, LOW = B→A; referenced to VCCA for stable control under mixed-voltage operation. |
| 1OE, 2OE | Output-enable input (per channel) | Active-LOW enable: LOW = outputs active, HIGH = high-impedance; tied to VCCA for consistent voltage reference and power-up safety. |
| 1A1–2A2 | A-port I/O (4 pins) | Bidirectional data lines referenced to VCCA; tolerate up to 4.6V regardless of VCCA setting. |
| 1B1–2B2 | B-port I/O (4 pins) | Bidirectional data lines referenced to VCCB; tolerate up to 4.6V regardless of VCCB setting. |
| VCCA, VCCB | Power supply inputs | Independent rails: VCCA powers A-port I/Os and all control inputs; VCCB powers B-port I/Os only. |
| GND (pins 10,11) | Ground terminals | Dual ground connections reduce noise coupling and improve signal integrity in high-speed bidirectional paths. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail voltage translation | Enables simultaneous 1.2V↔3.3V, 1.8V↔2.5V, or any combination within 1.2–3.6V range - eliminates need for multiple discrete translators. |
| Per-channel direction & output control | Independent DIR/OE per 2-bit channel allows asymmetric data flow management (e.g., A→B on ch1, B→A on ch2) in multi-protocol systems. |
| Ioff and VCC isolation | Prevents damaging current backflow when either VCCA or VCCB is unpowered - essential for hot-plug interfaces and power-gated subsystems. |
| 4.6V-tolerant I/Os | Allows direct connection to 3.3V or legacy 5V logic without external protection, reducing BOM count and PCB area. |
| Low dynamic power consumption | Typical Cpd = 1–15pF per transceiver - minimizes switching power in battery-powered devices operating at >10MHz. |
Applications
| Mobile Baseband Interface | Industrial Sensor Hub |
|---|---|
Use Scenario: Interfacing a 1.2V application processor with a 3.3V camera module over parallel MIPI-like bus. IC Role / Device Role / Timing Role: Bidirectional voltage translator managing data and control signals between mismatched voltage domains with sub-4ns propagation delay. Use Value: Eliminates need for separate level shifters per signal line; supports 380Mbps burst transfers required for raw image capture. | Use Scenario: Aggregating 1.8V I²C sensors (temperature, humidity) and 2.5V analog front-ends into a 3.3V microcontroller-based gateway. IC Role / Device Role / Timing Role: Dual-rail translator enabling concurrent communication across three voltage domains using shared I²C/SPI buses. Use Value: Reduces component count by consolidating four bidirectional data lines into one compact UQFN package with integrated Ioff protection. |
| Automotive Infotainment Display Link | Enterprise SSD Controller Interface |
Use Scenario: Connecting a 1.5V display controller to a 3.3V LVDS timing generator in a head-unit display subsystem. IC Role / Device Role / Timing Role: Low-latency, ESD-hardened translator ensuring reliable signal integrity in electrically noisy automotive environments. Use Value: 8kV HBM rating and –40°C to +85°C operation meet AEC-Q100 stress test requirements without derating. | Use Scenario: Bridging a 1.2V NVMe controller with 1.8V NAND flash memory arrays in enterprise SSD modules. IC Role / Device Role / Timing Role: High-speed bidirectional translator supporting DDR-style strobe/data alignment with matched channel delays. Use Value: 2.6ns max tPHL/tPLH skew between A→B and B→A paths ensures setup/hold timing compliance at 200+ Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC4T245PWR | Uses single 1.65–3.6V supply; no independent VCCA/VCCB rails; lower max speed (240Mbps). | Only suitable for same-voltage-domain buffering or limited 1.8V↔3.3V translation with reduced margin. | Select when cost sensitivity outweighs dual-rail flexibility and speed requirements. |
| TXS0104EPWR | Auto-direction sensing; open-drain B-port; no DIR pin; lower drive strength (±8mA vs ±12mA). | Optimized for I²C/SMBus; unsuitable for push-pull parallel buses requiring full drive capability. | Select only for low-speed, bidirectional open-drain protocols - not a functional replacement for 74AVC4T245RSVR-NT. |
Compared with SN74LVC4T245PWR and TXS0104EPWR, the 74AVC4T245RSVR-NT uniquely delivers independent dual-rail operation, 380Mbps throughput, and 4.6V I/O tolerance - making it the only option among the three capable of robust, high-speed, mixed-voltage parallel bus translation in space-constrained designs.
Availability
74AVC4T245RSVR-NT is available at Aetrix Electronics and suitable for mobile baseband interfaces, industrial sensor hubs, automotive infotainment displays, and enterprise SSD controllers requiring stable component supply across extended temperature ranges and mixed-voltage architectures.
Supply support for 74AVC4T245RSVR-NT 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 and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.
The AVC logic family, including the 74AVC4T245RSVR-NT, was designed specifically for ultra-low-voltage bidirectional translation in portable and power-sensitive systems where rail independence, Ioff protection, and high-speed operation are mandatory.
FAQ
What voltage ranges does the 74AVC4T245RSVR-NT support on its A and B ports?
The 74AVC4T245RSVR-NT supports 1.2V to 3.6V independently on both VCCA (A port) and VCCB (B port), enabling translation between any pair of standard low-voltage nodes including 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. This dual-rail flexibility is confirmed in TI's SCES576I datasheet Section 5.3 Recommended Operating Conditions.
How does the Ioff feature function in the 74AVC4T245RSVR-NT during partial power-down?
The Ioff feature in the 74AVC4T245RSVR-NT disables I/O output circuits when either VCCA or VCCB is at GND, limiting off-state current to ±1μA max. This prevents damaging backflow current between powered and unpowered sections of a system - a critical capability verified in Section 5.5 Electrical Characteristics of the official datasheet.
What is the maximum data rate achievable with the 74AVC4T245RSVR-NT, and under what conditions?
The 74AVC4T245RSVR-NT achieves up to 380Mbps when translating from 1.8V to 3.3V, as specified in Section 1 Features and Table 5.11 Switching Characteristics. Performance degrades to 200Mbps for sub-1.8V translations and 100Mbps when translating to 1.2V, per TI's published timing tables.
Does the 74AVC4T245RSVR-NT require external pull-up resistors on its OE pins, and why?
Yes - TI recommends tying OE pins to VCCA via a pull-up resistor to ensure high-impedance state during power-up/power-down. The minimum resistor value depends on the driver's sink capability; this requirement is explicitly stated in Section 3 Description and Figure 8-1 Typical Application Diagram to prevent bus contention before supplies stabilize.
Is the 74AVC4T245RSVR-NT pin-compatible with other packages in the SN74AVC4T245 family?
No - the RSV (UQFN, 2.6mm × 1.8mm) package has unique pinout and footprint versus D (SOIC), PW (TSSOP), or RGY (WQFN) variants. Pin mapping matches the RSV-specific configuration shown in Figure 4-3 and Table 4-1, and mechanical dimensions differ significantly across packages per Section 11 Packaging Information.
74AVC4T245RSVR-NT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVC
- Package/Case:
- 16-UFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Translation Transceiver
- Number of Elements:
- 2
- Number of Bits per Element:
- 2
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 0.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-UQFN (2.6x1.8)
74AVC4T245RSVR-NT FAQ
1.How can I place an order for 74AVC4T245RSVR-NT through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AVC4T245RSVR-NT 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 74AVC4T245RSVR-NT reliable?
The price and inventory of 74AVC4T245RSVR-NT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVC4T245RSVR-NT is usually 5 days.
3.What payment methods are accepted for 74AVC4T245RSVR-NT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AVC4T245RSVR-NT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AVC4T245RSVR-NT?
74AVC4T245RSVR-NT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AVC4T245RSVR-NT 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 74AVC4T245RSVR-NT?
For technical support, including 74AVC4T245RSVR-NT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVC4T245RSVR-NT requirements.
6.How does Aetrix verify that 74AVC4T245RSVR-NT is sourced from the original manufacturer or authorized distributors?
All 74AVC4T245RSVR-NT 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 74AVC4T245RSVR-NT meets industry standards.
7.What is the process for return or replacement of 74AVC4T245RSVR-NT?
All 74AVC4T245RSVR-NT units undergo pre-shipment inspection (PSI). If there is an issue with 74AVC4T245RSVR-NT, 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 74AVC4T245RSVR-NT part is unused and in its original packaging.
Return procedure for 74AVC4T245RSVR-NT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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