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Texas Instruments 74AVC4T774QPWRQ1
- Part No.:
- 74AVC4T774QPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74AVC4T774QPWRQ1.pdf
- Description:
- AUTOMOTIVE FOUR-BIT DUAL-SUPPLY
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
74AVC4T774QPWRQ1 from Texas Instruments is an automotive-qualified 4-bit dual-supply bus transceiver enabling bidirectional voltage-level translation between 1.08V–3.6V domains (e.g., 1.8V ↔ 3.3V), with independent per-channel direction control (DIR1–DIR4), 3-state outputs, and Ioff partial-power-down support. It operates from –40°C to +125°C ambient and delivers up to 500 Mbps data rate in automotive telematics interconnects.
For engineers reviewing the 74AVC4T774QPWRQ1 datasheet, 74AVC4T774QPWRQ1 pinout, 74AVC4T774QPWRQ1 application, or 74AVC4T774QPWRQ1 equivalent, key selection criteria include dual-rail supply flexibility (VCCA/VCCB = 1.08V–3.6V), per-bit DIR control for asymmetric bus protocols, AEC-Q100 qualification, and 4.6V I/O tolerance for robustness in mixed-voltage automotive subsystems.
Technical Context
The 74AVC4T774QPWRQ1 implements four independent bidirectional channels, each with dedicated DIR input referenced to VCCA and shared OE control. Its dual-rail architecture isolates A-port logic (VCCA-supplied) from B-port logic (VCCB-supplied), enabling asynchronous translation without clock domain constraints.
Direction control is per-channel (DIR1–DIR4), allowing simultaneous A→B and B→A data flow on different bit lanes. The Ioff feature disables output circuits when either VCCA or VCCB is at GND, preventing backflow current during power sequencing - critical for automotive ECU hot-swap and partial-power-down scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range (VCCA / VCCB) | 1.08V to 3.6V each - enables translation across 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V logic domains without external level-shifting components. |
| Max Data Rate | 500 Mbps - supports high-speed serial interfaces like SPI, UART, and GPIO-based protocols in infotainment and ADAS subsystems. |
| I/O Voltage Tolerance | 4.6V - allows safe interfacing with legacy 5V-tolerant peripherals while operating at sub-3.3V core voltages. |
| Operating Temperature | –40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for under-hood and dashboard-mounted automotive electronics. |
| ESD Rating (HBM / CDM) | ±8 kV HBM, ±1 kV CDM - exceeds automotive ESD immunity standards for reliable operation in noisy vehicle environments. |
| Propagation Delay (tPLH/tPHL) | 1.2 ns (min, VCCA=3.3V, VCCB=3.3V) - ensures timing-critical signal integrity in real-time communication links. |
| Power-Down Current (Ioff) | ±5 µA (max, –40°C to +125°C) - minimizes leakage during sleep modes, extending battery life in always-on vehicle systems. |
Pinout & Package
Packaged in a 16-pin TSSOP (PW) with 5mm × 6.4mm footprint, the 74AVC4T774QPWRQ1 features exposed thermal pad for enhanced thermal dissipation in compact automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DIR1–DIR4 | Per-channel direction control input | Referenced to VCCA; high = A→B, low = B→A - enables flexible, asymmetric bus arbitration per bit lane. |
| OE | Global output-enable input | Referenced to VCCA; high = all outputs high-Z - used for bus isolation during power-up/down or fault recovery. |
| A1–A4 | A-port bidirectional I/O | Referenced to VCCA; supports 1.08V–3.6V logic levels - connects to MCU, FPGA, or ASIC core voltage domain. |
| B1–B4 | B-port bidirectional I/O | Referenced to VCCB; supports 1.08V–3.6V logic levels - interfaces with sensors, displays, or legacy peripherals on separate rail. |
| VCCA / VCCB | Independent power supplies | Decoupled rails allow independent voltage scaling and sequencing - essential for mixed-voltage automotive SoC integration. |
| GND | Ground reference | Common return path; thermal pad must be connected to ground plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Per-bit direction control | Four independent DIR inputs enable concurrent A→B and B→A transfers on different channels - ideal for multi-protocol GPIO expansion. |
| Dual-rail voltage translation | VCCA and VCCB independently configurable from 1.08V to 3.6V - eliminates need for discrete level shifters in 1.2V/1.8V/2.5V/3.3V cross-domain interfaces. |
| Ioff partial-power-down | Blocks current backflow when either VCCA or VCCB is unpowered - prevents damage during hot-plug or staggered power sequencing in ECUs. |
| VCC isolation | Both ports enter high-Z if either VCCA or VCCB = GND - provides fail-safe isolation during brownout or supply fault conditions. |
| AEC-Q100 qualified | Qualified to Grade 1 (–40°C to +125°C), HBM ±8 kV, CDM ±1 kV - certified for safety-critical automotive applications including cluster and head unit systems. |
Applications
| Telematics Control Unit | Instrument Cluster |
|---|---|
Use Scenario: Interfacing a 1.8V microcontroller with 3.3V CAN transceivers and GPS modules in a vehicle's telematics gateway. IC Role / Device Role: Bidirectional voltage translator managing data flow between low-voltage MCU GPIOs and higher-voltage peripheral buses. Use Value: Enables direct connection without external level shifters, reducing BOM count and PCB area while maintaining 500 Mbps throughput for OTA firmware updates. |
Use Scenario: Connecting a 2.5V display controller to a 3.3V graphics processor in a digital instrument cluster with real-time rendering requirements. IC Role / Device Role: Per-bit direction-controlled transceiver synchronizing pixel data and command signals across mismatched voltage domains. Use Value: Independent DIR lines allow simultaneous readback of display status (B→A) and write of frame buffers (A→B), improving UI responsiveness. |
| Infotainment Head Unit | Navigation System Interface |
Use Scenario: Bridging a 1.2V application processor and 3.3V audio codec, touch controller, and SD card interface in an automotive head unit. IC Role / Device Role: Dual-rail bus transceiver supporting multiple concurrent voltage translations on shared GPIO banks. Use Value: Single device replaces three discrete translators, lowering system cost and simplifying layout while meeting AEC-Q100 reliability requirements. |
Use Scenario: Level-shifting between a 1.5V navigation SoC and 2.5V GNSS receiver module in a standalone navigation ECU. IC Role / Device Role: Automotive-grade bidirectional translator ensuring signal integrity across temperature extremes during route calculation and map rendering. Use Value: 4.6V I/O tolerance protects against transient overvoltage from antenna coupling, enhancing field reliability in harsh RF environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC4T245QDRQ1 | Shared DIR input (not per-bit); identical VCCA/VCCB range, speed, and AEC-Q100 rating. | Suitable for symmetric bidirectional buses where all 4 bits share same direction; lacks per-lane control flexibility. | Select when protocol requires uniform A↔B direction (e.g., parallel memory bus), not mixed-direction GPIO expansion. |
| TXS4T774QPWRQ1 | Auto-direction sensing (no DIR pins); lower drive strength (8 mA vs 12 mA); same dual-rail range and AEC-Q100 grade. | Eliminates DIR control wiring but adds propagation delay uncertainty; optimized for open-drain-like protocols (I²C, SMBus). | Select for self-clocking or low-speed protocols where direction detection suffices; avoid for deterministic timing-critical SPI/UART. |
Compared with SN74AVC4T245QDRQ1 and TXS4T774QPWRQ1, the 74AVC4T774QPWRQ1 uniquely supports per-bit direction control - enabling heterogeneous bus architectures where individual data lanes require independent A→B or B→A flow, such as multiplexed sensor interfaces or hybrid display command/data paths.
Availability
74AVC4T774QPWRQ1 is available at Aetrix Electronics and suitable for automotive telematics, instrument cluster, and infotainment head unit designs requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for 74AVC4T774QPWRQ1 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 specializing in analog, embedded processing, and automotive ICs, with decades of experience delivering high-reliability solutions for transportation systems.
The 74AVC4T774QPWRQ1 belongs to TI's AVC automotive logic family, designed specifically for voltage translation in next-generation vehicle electronics where mixed-supply domains, functional safety, and extended temperature operation are mandatory.
FAQ
What is the maximum supported data rate for 74AVC4T774QPWRQ1 in automotive applications?
The 74AVC4T774QPWRQ1 supports up to 500 Mbps data rate when translating between 1.08V–3.6V domains (e.g., 1.8V ↔ 3.3V), verified across the full –40°C to +125°C operating range. This performance is specified in the switching characteristics tables of the official datasheet (SCES970B) and applies to both A→B and B→A directions under recommended operating conditions.
How does the per-bit direction control (DIR1–DIR4) function in 74AVC4T774QPWRQ1?
In the 74AVC4T774QPWRQ1, each DIR input controls its corresponding bit pair independently: DIR1 governs A1/B1, DIR2 governs A2/B2, etc. When DIRx is high, data flows A→B; when low, data flows B→A - all while OE is low. This enables mixed-direction operation on a single device, unlike shared-DIR alternatives, and is essential for protocols requiring asymmetric read/write signaling.
Does 74AVC4T774QPWRQ1 support partial power-down, and how is it implemented?
Yes, the 74AVC4T774QPWRQ1 implements Ioff partial-power-down protection. When either VCCA or VCCB is at GND, the Ioff circuitry disables output drivers to prevent damaging backflow current. Measured leakage is ±5 µA max over –40°C to +125°C, ensuring safe operation during power sequencing, sleep modes, or supply faults in automotive ECUs.
What package options are available for 74AVC4T774QPWRQ1, and which is used in the PW suffix?
The 74AVC4T774QPWRQ1 is offered in three packages: PW (16-pin TSSOP, 5mm × 6.4mm), BQB (16-pin WQFN, 3.5mm × 2.5mm), and DYY (16-pin SOT, 4.2mm × 2mm). The "PW" in the part number 74AVC4T774QPWRQ1 explicitly denotes the TSSOP package, confirmed by TI's official packaging documentation and orderable part matrix.
Is 74AVC4T774QPWRQ1 compatible with 5V systems, and what is its I/O voltage tolerance?
The 74AVC4T774QPWRQ1 is not 5V-tolerant on its power supplies (VCCA/VCCB max = 3.6V), but its I/O pins are rated to 4.6V - allowing safe connection to 5V peripherals when driven through current-limiting resistors or in open-drain configurations. This tolerance is specified in Absolute Maximum Ratings (Section 5.1) and supports interoperability with legacy 5V logic in automotive subsystems.
74AVC4T774QPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVC
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 4
- Voltage - VCCA:
- 1.08 V ~ 3.6 V
- Voltage - VCCB:
- 1.08 V ~ 3.6 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State
- Data Rate:
- 500Mbps
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP (0.173", 4.40mm Width)
74AVC4T774QPWRQ1 FAQ
1.How can I place an order for 74AVC4T774QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AVC4T774QPWRQ1 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 74AVC4T774QPWRQ1 reliable?
The price and inventory of 74AVC4T774QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVC4T774QPWRQ1 is usually 5 days.
3.What payment methods are accepted for 74AVC4T774QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AVC4T774QPWRQ1 transactions.
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4.How is shipping managed for 74AVC4T774QPWRQ1?
74AVC4T774QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AVC4T774QPWRQ1 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 74AVC4T774QPWRQ1?
For technical support, including 74AVC4T774QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVC4T774QPWRQ1 requirements.
6.How does Aetrix verify that 74AVC4T774QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All 74AVC4T774QPWRQ1 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 74AVC4T774QPWRQ1 meets industry standards.
7.What is the process for return or replacement of 74AVC4T774QPWRQ1?
All 74AVC4T774QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with 74AVC4T774QPWRQ1, 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 74AVC4T774QPWRQ1 part is unused and in its original packaging.
Return procedure for 74AVC4T774QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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