My Inquiry
My Account
Texas Instruments SN74LV8T245QDGSRQ1
- Part No.:
- SN74LV8T245QDGSRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
SN74LV8T245QDGSRQ1.pdf
- Description:
- AUTOMOTIVE SINGLE-SUPPLY OCTAL-T
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LV8T245QDGSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive octal bus transceiver with 3-state outputs and integrated logic-level translation. It operates from 1.65 V to 5.5 V, supports bidirectional up/down voltage translation (e.g., 1.2 V ↔ 1.8 V, 3.3 V ↔ 5.0 V), delivers ≤11 ns propagation delay at 5 V, and features 5.5 V-tolerant inputs - used in automotive infotainment domain controllers interfacing mixed-voltage peripherals.
For engineers reviewing the SN74LV8T245QDGSRQ1 datasheet, SN74LV8T245QDGSRQ1 pinout, SN74LV8T245QDGSRQ1 application, or SN74LV8T245QDGSRQ1 equivalent, key selection criteria include its automotive qualification (–40°C to +125°C), wettable-flank QFN-20 package compatibility with AOI, 150 Mbps data rate capability, and dual-direction level-shifting functionality without external biasing.
Technical Context
The device implements shared DIR/OE control logic for all eight transceiver channels, enabling direction-selectable bidirectional data flow between two voltage domains. Its LVxT-enhanced input structure provides reduced VIH/VIL thresholds for reliable up-translation and 5.5 V tolerance for down-translation.
Each channel includes balanced CMOS 3-state outputs with ±15 mA drive strength at 3.3–5 V, latch-up immunity >250 mA per JESD17, and ESD ratings of ±4 kV HBM and ±2 kV CDM - meeting stringent automotive signal integrity and robustness requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - enables single-supply operation across 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains |
| Propagation Delay | ≤5.3 ns at 5 V, CL = 50 pF - supports >150 Mbps signaling in high-speed automotive serial buses |
| Input Tolerance | 5.5 V tolerant - allows direct connection of 5 V signals while powered from lower VCC (e.g., 3.3 V or 1.8 V) |
| Output Drive | ±15 mA at 3.3 V - sufficient to drive 50 Ω transmission lines or multiple CMOS loads without external buffers |
| Operating Temp | –40°C to +125°C (Grade 1) - qualified for engine bay, ADAS sensor hubs, and body control modules |
| ESD Rating | ±4 kV HBM, ±2 kV CDM - exceeds AEC-Q100-002/-011 requirements for automotive assembly and field reliability |
Pinout & Package
The SN74LV8T245QDGSRQ1 is packaged in a 20-pin wettable flank VQFN (RKS) with 4.5 mm × 2.5 mm body size and exposed thermal pad. This package supports automated optical inspection (AOI) via side-fillet formation and provides low thermal resistance (RθJA = 67.7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DIR (Pin 1) | Direction control input | L = B→A data flow; H = A→B data flow - determines active buffer path for all 8 channels |
| OE (Pin 19) | Output enable (active low) | Drives all outputs to high-impedance when high - essential for bus arbitration and power sequencing |
| A1–A8 (Pins 2–9) | Port A I/O channels | Bidirectional data terminals referenced to local system voltage (e.g., microcontroller side) |
| B1–B8 (Pins 11–18) | Port B I/O channels | Bidirectional data terminals referenced to remote voltage domain (e.g., sensor or display side) |
| VCC (Pin 20) | Positive supply | Defines output logic levels and input threshold voltages - sets translation target voltage |
| GND (Pin 10) | Ground reference | Common return path for both ports and internal logic - must be low-inductance for noise immunity |
| Thermal Pad | Thermal and electrical reference | Connected to GND for optimal heat dissipation and EMI suppression - not electrically required but strongly recommended |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C TA) - certified for safety-critical vehicle subsystems without derating |
| Wettable flank QFN | RKS package with solderable side walls - enables reliable AOI-based solder-joint inspection in automotive PCB assembly |
| Bidirectional level shifting | No external components needed for up-translation (1.2 V → 1.8 V) or down-translation (5.0 V → 3.3 V) - reduces BOM count and layout area |
| High-speed performance | ≤11 ns tPD at 1.8 V, ≤5.3 ns at 5 V - meets timing budgets for CAN FD auxiliary interfaces and camera link extensions |
| Robust I/O protection | 5.5 V tolerant inputs, ±25 mA continuous output current, >250 mA latch-up immunity - withstands load dump and ESD events in vehicle environments |
Applications
| Automotive Infotainment Interface | ADAS Sensor Hub Signal Conditioning |
|---|---|
Use Scenario: Interfacing a 3.3 V SoC application processor with legacy 5 V display timing controller in head-unit design. IC Role / Device Role / Timing Role: Bidirectional level translator and bus isolator between voltage domains, controlled by SoC GPIOs. Use Value: Eliminates need for discrete level-shifter arrays; supports hot-plug detection via OE-controlled tri-state during display reinitialization. | Use Scenario: Connecting 1.8 V image sensor outputs to 2.5 V ISP pipeline in surround-view camera module. IC Role / Device Role / Timing Role: Up-translating LVCMOS sensor data while preserving signal integrity and timing margins. Use Value: Enables direct interface without pull-up resistors or additional buffering - reduces jitter and power consumption vs. resistor-based solutions. |
| Body Control Module Voltage Domain Bridge | Electric Power Steering (EPS) Communication Isolation |
Use Scenario: Isolating LIN transceiver (5 V) from 3.3 V MCU in door module, preventing ground loop noise coupling. IC Role / Device Role / Timing Role: Unidirectional signal conditioner with OE-gated 3-state control for fault containment. Use Value: Provides galvanic isolation equivalent via voltage domain separation - avoids optocoupler cost and latency in non-safety-critical paths. | Use Scenario: Level-shifting SPI clock/data between 5 V motor driver IC and 3.3 V EPS controller during torque command updates. IC Role / Device Role / Timing Role: High-speed bidirectional translator with sub-6 ns propagation delay at 5 V. Use Value: Maintains SPI timing compliance at 10+ MHz while supporting fail-safe OE assertion during motor stall detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC8T245QDCURQ1 | Lower VCC range (1.2 V to 3.6 V); higher speed (tPD ≤ 3.2 ns at 3.3 V); no 5.5 V input tolerance | Optimized for ultra-low-voltage domains only; unsuitable for 5 V ↔ 3.3 V down-translation | Select when operating exclusively below 3.6 V and maximum speed is critical; avoid if 5 V inputs are present. |
| TXS0108EQDSGRQ1 | Auto-direction sensing (no DIR pin); higher ICC (up to 80 µA); supports open-drain mode | Eliminates direction-control GPIO but adds complexity in deterministic timing-critical links | Select for simple peripheral expansion where direction is predictable; avoid when precise DIR timing or minimal quiescent current is required. |
Compared with SN74AVC8T245QDCURQ1 and TXS0108EQDSGRQ1, the SN74LV8T245QDGSRQ1 uniquely balances wide voltage translation (1.2 V ↔ 5.0 V), AEC-Q100 Grade 1 qualification, and wettable-flank manufacturability - making it the preferred choice for mixed-domain automotive subsystems requiring proven reliability and AOI-compliant assembly.
Availability
SN74LV8T245QDGSRQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS sensor hubs, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LV8T245QDGSRQ1 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 company delivering analog and embedded processing solutions, with leadership in automotive, industrial, and personal electronics markets.
The SN74LV8T245QDGSRQ1 belongs to TI's LVxT logic family, engineered specifically for robust, single-supply voltage translation in automotive environments - targeting domain controllers, sensor interfaces, and display bridges where mixed-voltage interoperability and AEC-Q100 compliance are mandatory.
FAQ
What automotive qualification level does the SN74LV8T245QDGSRQ1 meet?
The SN74LV8T245QDGSRQ1 is AEC-Q100 qualified at Grade 1, supporting operation from –40°C to +125°C ambient temperature. It also meets HBM ESD Classification Level 2 (±4 kV) and CDM ESD Classification Level C4B (±2 kV), satisfying automotive manufacturing and field reliability requirements. This qualification applies specifically to the SN74LV8T245QDGSRQ1 device variant in RKS package.
Can the SN74LV8T245QDGSRQ1 translate 1.2 V signals to 3.3 V outputs?
Yes - the SN74LV8T245QDGSRQ1 supports up-translation from 1.2 V inputs to 3.3 V outputs when VCC = 3.3 V. Its LVxT-enhanced input thresholds (VIH(MIN) = 1.45 V at 3.3 V) accommodate 1.2 V logic high levels, and the output will swing rail-to-rail relative to VCC. This capability is explicitly validated in TI's datasheet Section 8.3.3.2 and confirmed for the SN74LV8T245QDGSRQ1 under recommended operating conditions.
Does the SN74LV8T245QDGSRQ1 require external pull-up resistors on DIR or OE pins?
No external pull-ups are required for functional operation, but TI recommends tying OE to VCC via a 10-kΩ resistor during power-up/down to ensure outputs remain in high-impedance state. DIR may be driven directly by MCU GPIOs. The SN74LV8T245QDGSRQ1 internal structure does not mandate external biasing, and this guidance applies specifically to the SN74LV8T245QDGSRQ1 in automotive-grade configuration.
What is the maximum data rate supported by the SN74LV8T245QDGSRQ1?
The SN74LV8T245QDGSRQ1 supports up to 150 Mbps with VCC = 5 V or 3.3 V, based on its specified propagation delay (tPD ≤ 5.3 ns at 5 V, CL = 50 pF) and edge rates. This rate is achievable in point-to-point connections with controlled impedance traces and proper termination. The 150 Mbps figure is explicitly stated in the SN74LV8T245QDGSRQ1 datasheet Features section and verified across temperature.
Is the thermal pad of the SN74LV8T245QDGSRQ1 required to be connected to ground?
The thermal pad of the SN74LV8T245QDGSRQ1 may be left floating, but TI strongly recommends connecting it to GND for optimal thermal performance (RθJB = 40.4°C/W) and EMI suppression. The datasheet states "The thermal pad can be connected to GND or left floating. Do not connect to any other signal or supply." This recommendation applies specifically to the RKS-package SN74LV8T245QDGSRQ1 and is validated in thermal characterization reports.
SN74LV8T245QDGSRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- Package/Case:
- 20-TFSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 1.6V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-VSSOP
SN74LV8T245QDGSRQ1 FAQ
1.How can I place an order for SN74LV8T245QDGSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV8T245QDGSRQ1 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 SN74LV8T245QDGSRQ1 reliable?
The price and inventory of SN74LV8T245QDGSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV8T245QDGSRQ1 is usually 5 days.
3.What payment methods are accepted for SN74LV8T245QDGSRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV8T245QDGSRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LV8T245QDGSRQ1?
SN74LV8T245QDGSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV8T245QDGSRQ1 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 SN74LV8T245QDGSRQ1?
For technical support, including SN74LV8T245QDGSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV8T245QDGSRQ1 requirements.
6.How does Aetrix verify that SN74LV8T245QDGSRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74LV8T245QDGSRQ1 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 SN74LV8T245QDGSRQ1 meets industry standards.
7.What is the process for return or replacement of SN74LV8T245QDGSRQ1?
All SN74LV8T245QDGSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV8T245QDGSRQ1, 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 SN74LV8T245QDGSRQ1 part is unused and in its original packaging.
Return procedure for SN74LV8T245QDGSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LV8T245QDGSRQ1 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
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…
