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Texas Instruments SN74AVC8T245QPWRQ1
- Part No.:
- SN74AVC8T245QPWRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AVC8T245QPWRQ1.pdf
- Description:
- IC TRANSLATION TXRX 3.6V 24TSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74AVC8T245QPWRQ1 from Texas Instruments is an automotive-grade 8-bit dual-supply noninverting bus transceiver enabling bidirectional voltage translation between 1.2 V–3.6 V domains. It features configurable VCCA/VCCB rails, 3-state outputs controlled by DIR/OE, 4.6-V I/O tolerance, and supports up to 320 Mbps data rate when both supplies ≥1.8 V - used in telematics and instrument cluster interconnects.
For engineers reviewing the SN74AVC8T245QPWRQ1 datasheet, SN74AVC8T245QPWRQ1 pinout, SN74AVC8T245QPWRQ1 application, or SN74AVC8T245QPWRQ1 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification (–40°C to +125°C), VCC isolation behavior, Ioff partial-power-down support, and dual-rail supply flexibility across 1.2–3.6 V nodes.
Technical Context
The SN74AVC8T245QPWRQ1 implements asynchronous bidirectional data flow via a direction-control (DIR) input referenced to VCCA, with output-enable (OE) also VCCA-referenced. Its dual-rail architecture decouples A-port (VCCA-tracked) and B-port (VCCB-tracked) logic levels, enabling translation between mismatched voltage domains without external level-shifting circuitry.
VCC isolation ensures all I/Os enter high-impedance state if either VCCA or VCCB is at GND, while Ioff circuitry actively disables outputs during partial power-down to prevent backflow current. The device meets AEC-Q100 HBM Class H2 (±2000 V) and CDM Class C3B (±750 V) ESD requirements for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | VCCA and VCCB each operate from 1.2 V to 3.6 V - enables translation between 1.2/1.5/1.8/2.5/3.3-V domains |
| Max Data Rate | 320 Mbps when VCCA ≥1.8 V and VCCB ≥1.8 V - supports high-speed serial interconnects in infotainment systems |
| I/O Tolerance | 4.6 V on all A/B ports - allows safe interfacing with higher-voltage legacy peripherals |
| ESD Rating | HBM ±2000 V, CDM ±750 V - qualified per AEC-Q100 for under-hood and cabin electronics |
| Operating Temp | –40°C to +125°C ambient - meets automotive Grade 1 thermal requirements |
| Propagation Delay | As low as 2.3 ns (A→B, VCCA=3.3 V, VCCB=3.3 V) - ensures timing-critical signal integrity in real-time control paths |
| Static Current | ICCA + ICCB ≤25 µA over full temp range - minimizes quiescent power in always-on vehicle modules |
Pinout & Package
The SN74AVC8T245QPWRQ1 is available in PW (TSSOP-24) package, 7.8 mm × 6.4 mm, with exposed thermal pad connected to GND or left floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A8 | I/O port A | Bi-directional signals referenced to VCCA; support 1.2–3.6 V logic levels |
| B1–B8 | I/O port B | Bi-directional signals referenced to VCCB; support 1.2–3.6 V logic levels |
| DIR | Direction control input | High = A→B data flow; Low = B→A data flow; referenced to VCCA |
| OE | Output enable input | Low = active data transfer; High = 3-state isolation of both ports; referenced to VCCA |
| VCCA | Port A supply | Powers A-port I/Os and DIR/OE inputs; 1.2–3.6 V range |
| VCCB | Port B supply | Powers B-port I/Os; independent 1.2–3.6 V range |
| GND | Ground | Three dedicated pins (pins 11, 12, 13) ensure low-impedance return path for noise-sensitive automotive operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail voltage translation | Independent VCCA/VCCB supplies allow simultaneous operation across 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V domains without external components |
| VCC isolation | Automatic high-impedance state on all I/Os if either VCCA or VCCB is driven to GND - prevents bus contention during power sequencing |
| Ioff partial-power-down | Disables output circuits when VCCA or VCCB = 0 V, blocking reverse current flow that could damage upstream drivers |
| Automotive qualification | AEC-Q100 Grade 1 certified with HBM/CDM ESD ratings and extended temperature validation - suitable for safety-critical vehicle subsystems |
| 3-state bus isolation | OE-controlled tri-state outputs enable clean bus sharing among multiple masters in distributed ECUs |
Applications
| Telematics Control Unit | Instrument Cluster |
|---|---|
Use Scenario: Interfacing a 1.8-V microcontroller to a 3.3-V GPS/GNSS module and cellular modem within a single telematics ECU. IC Role / Device Role / Timing Role: Bidirectional voltage translator managing asynchronous data exchange between mixed-voltage peripherals. Use Value: Eliminates need for discrete level shifters, reduces BOM count, and maintains 320-Mbps throughput for real-time location updates. | Use Scenario: Connecting a 2.5-V display controller to a 1.2-V MCU in a digital instrument cluster with strict EMC and thermal constraints. IC Role / Device Role / Timing Role: Level-translating transceiver enabling low-latency graphics data transfer while supporting hot-plug detection. Use Value: Enables direct interface without voltage dividers or active translators, preserving signal edge rates critical for video timing. |
| Infotainment Head Unit | Navigation System |
Use Scenario: Bridging a 3.3-V audio codec and 1.5-V application processor in an automotive head unit with multi-source audio routing. IC Role / Device Role / Timing Role: Configurable bus transceiver handling bidirectional I²S and control signals across voltage domains. Use Value: Supports glitch-free audio clock domain crossing and eliminates cross-talk from shared supply rails. | Use Scenario: Linking a 1.8-V navigation processor to a 2.5-V CAN transceiver and 3.3-V SD card interface in a standalone navigation module. IC Role / Device Role / Timing Role: Dual-supply translator providing isolated, direction-controlled data paths for concurrent map loading and vehicle bus communication. Use Value: Ensures reliable boot-time initialization and runtime data coherency across three distinct voltage domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC8T245RHLRQ1 | VQFN-24 (5.5 mm × 3.5 mm) package with wettable flanks; identical electrical specs and AEC-Q100 qualification | Preferred for space-constrained PCB layouts requiring improved thermal performance and automated optical inspection (AOI) | Select when board area is limited or reflow process requires enhanced solder joint reliability verification |
| SN74LVC8T245QPWRQ1 | Single-supply (VCC only); no dual-rail translation capability; lower max data rate (240 Mbps); same AEC-Q100 Grade 1 rating | Suitable only for same-voltage-domain buffering; cannot translate between differing logic levels | Choose only if system uses uniform 3.3-V or 2.5-V signaling and cost optimization outweighs voltage-flexibility needs |
Compared with SN74AVC8T245RHLRQ1, the SN74AVC8T245QPWRQ1 offers larger TSSOP footprint but simplified hand-soldering and thermal pad accessibility; versus SN74LVC8T245QPWRQ1, it delivers true dual-rail translation essential for heterogeneous automotive SoC interfaces.
Availability
SN74AVC8T245QPWRQ1 is available at Aetrix Electronics and suitable for telematics, instrument cluster, and infotainment head unit designs requiring stable component supply, AEC-Q100 compliance, and dual-voltage domain interoperability.
Supply support for SN74AVC8T245QPWRQ1 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 automotive, industrial, and personal electronics markets.
The SN74AVC8T245QPWRQ1 belongs to TI's AVC family of advanced voltage-tolerant transceivers, designed specifically for robust, low-power, mixed-voltage communication in automotive electronic control units.
FAQ
What automotive qualification does the SN74AVC8T245QPWRQ1 meet?
The SN74AVC8T245QPWRQ1 is qualified to AEC-Q100 Grade 1 standards, with device temperature range –40°C to +125°C, HBM ESD classification Level H2 (±2000 V), and CDM ESD classification Level C3B (±750 V). These certifications confirm its suitability for under-hood and cabin applications where reliability under thermal stress and electrostatic events is critical. All test reports are documented in TI's official AEC-Q100 certification files for SN74AVC8T245QPWRQ1.
How does the VCC isolation feature function in the SN74AVC8T245QPWRQ1?
In the SN74AVC8T245QPWRQ1, VCC isolation forces all I/O ports into high-impedance state whenever either VCCA or VCCB is driven to GND - even if the other supply remains active. This prevents bus contention during power-up/down sequences or fault conditions. The feature operates automatically without software or external circuitry, and is verified across the full –40°C to +125°C operating range per SN74AVC8T245QPWRQ1 datasheet Section 7.3.2.
Can the SN74AVC8T245QPWRQ1 translate between 1.2 V and 3.3 V logic levels?
Yes, the SN74AVC8T245QPWRQ1 supports full bidirectional translation between 1.2 V and 3.3 V domains: VCCA may be set to 1.2 V while VCCB is set to 3.3 V, or vice versa. Both ports tolerate up to 4.6 V, and the device maintains valid logic thresholds across this range. Measured propagation delay remains below 6 ns in this configuration, as confirmed in SN74AVC8T245QPWRQ1 switching characteristics tables (Sections 5.6–5.10).
What is the maximum data rate supported by the SN74AVC8T245QPWRQ1?
The SN74AVC8T245QPWRQ1 supports up to 320 Mbps when both VCCA and VCCB are ≥1.8 V; at lower supply voltages (<1.8 V), the maximum rate drops to 170 Mbps. These values are measured under loaded conditions (15-pF CL, 1-V/ns slew rate) and reflect guaranteed performance across the full automotive temperature range, as specified in SN74AVC8T245QPWRQ1 datasheet Section 1 Features and Table 5.10.
How does the Ioff feature protect the SN74AVC8T245QPWRQ1 during partial power-down?
The Ioff circuitry in the SN74AVC8T245QPWRQ1 disables all output drivers when either VCCA or VCCB is at 0 V, limiting Ioff leakage to ±5 µA over –40°C to +125°C. This prevents damaging reverse current from flowing into a powered-down rail from an active one - a critical safeguard in automotive modules with staggered power sequencing. The behavior is characterized in SN74AVC8T245QPWRQ1 Electrical Characteristics table (Section 5.5, parameter Ioff).
SN74AVC8T245QPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVC
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Translation Transceiver
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
SN74AVC8T245QPWRQ1 FAQ
1.How can I place an order for SN74AVC8T245QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AVC8T245QPWRQ1 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 SN74AVC8T245QPWRQ1 reliable?
The price and inventory of SN74AVC8T245QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AVC8T245QPWRQ1 is usually 5 days.
3.What payment methods are accepted for SN74AVC8T245QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AVC8T245QPWRQ1 transactions.
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4.How is shipping managed for SN74AVC8T245QPWRQ1?
SN74AVC8T245QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AVC8T245QPWRQ1 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 SN74AVC8T245QPWRQ1?
For technical support, including SN74AVC8T245QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AVC8T245QPWRQ1 requirements.
6.How does Aetrix verify that SN74AVC8T245QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74AVC8T245QPWRQ1 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 SN74AVC8T245QPWRQ1 meets industry standards.
7.What is the process for return or replacement of SN74AVC8T245QPWRQ1?
All SN74AVC8T245QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AVC8T245QPWRQ1, 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 SN74AVC8T245QPWRQ1 part is unused and in its original packaging.
Return procedure for SN74AVC8T245QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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