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Texas Instruments SN74LVC8T245MDWREP
- Part No.:
- SN74LVC8T245MDWREP
- Manufacturer:
- Texas Instruments
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVC8T245MDWREP.pdf
- Description:
- IC TRANSLATION TXRX 5.5V 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,549
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Product details
Overview
SN74LVC8T245MDWREP from Texas Instruments is an 8-bit dual-supply bus transceiver with configurable voltage translation, enabling bidirectional data flow between 1.65-V and 3.6-V buses. It features ±24-mA drive strength, 3.7-ns typical propagation delay at 3.3 V, and AEC-Q100 Grade 1 qualification (–40°C to +125°C) for automotive applications including infotainment domain controllers and ADAS sensor hubs.
For engineers reviewing the SN74LVC8T245MDWREP datasheet, SN74LVC8T245MDWREP pinout, SN74LVC8T245MDWREP application, or SN74LVC8T245MDWREP equivalent, key selection criteria include dual-supply translation capability, automotive-grade reliability, bus-hold functionality on data inputs, direction control timing margins, and SOIC-24 package compatibility with legacy PCB layouts.
Technical Context
This transceiver uses separate VCCA (1.65 V to 3.6 V) and VCCB (1.65 V to 3.6 V) supplies to translate logic levels between mismatched voltage domains. Direction control (DIR) and output-enable (OE) pins operate referenced to VCCA, allowing independent control of data flow direction and bus isolation.
All I/Os support partial-power-down mode with IOFF protection, preventing current backflow when either supply is inactive. Bus-hold circuitry on A- and B-side data inputs eliminates external pull resistors, maintaining last-valid state during high-impedance conditions without increasing static power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VCCA and VCCB: 1.65 V to 3.6 V - enables interoperability between 1.8-V, 2.5-V, and 3.3-V subsystems without level-shifting ICs |
| Propagation Delay | 3.7 ns (typ) at VCC = 3.3 V - supports >100-MHz data rates in synchronous bus interfaces |
| Drive Strength | ±24 mA (VCC = 3.3 V) - drives 50-Ω transmission lines directly and sustains signal integrity across 10-cm PCB traces |
| Bus-Hold Current | ±10 µA - maintains valid logic state on floating inputs without external biasing, reducing BOM count and layout area |
| ESD Rating | ±2000 V HBM - meets automotive system-level ESD robustness requirements per ISO 10605 |
| Operating Temperature | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and cockpit electronics |
| IOFF Protection | Active at VCC = 0 V - prevents power rail contention and data corruption during hot-swap or power sequencing |
Pinout & Package
SN74LVC8T245MDWREP is housed in a 24-pin SOIC (DW) package with 1.27-mm pitch, 15.4-mm body length, and standard JEDEC MS-013AC footprint - compatible with automated assembly and legacy reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A8 | Data inputs/outputs (Side A) | Interface with lower-voltage domain (e.g., 1.8-V microcontroller); bus-hold enabled by default |
| B1–B8 | Data inputs/outputs (Side B) | Interface with higher-voltage domain (e.g., 3.3-V sensor interface); bus-hold enabled by default |
| DIR | Direction control input | High = A→B transfer; Low = B→A transfer; referenced to VCCA |
| OE | Output enable input | Low = active transceiver; High = high-impedance isolation on both sides |
| VCCA | Supply for Side A and control logic | Powers A-side I/Os and DIR/OE inputs; sets input thresholds for control pins |
| VCCB | Supply for Side B | Powers B-side I/Os only; independent of VCCA for true voltage translation |
| GND | Ground reference | Common return path for both domains; no separate ground pins required |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply voltage translation | Supports asymmetric VCCA/VCCB combinations (e.g., 1.8 V ↔ 3.3 V), eliminating discrete level shifters in mixed-voltage systems |
| Integrated bus-hold | Retains last-driven logic state on A/B inputs during tri-state or power-down, removing need for 10-kΩ external pull resistors per line |
| IOFF partial-power-down protection | Blocks current flow between A and B sides when either VCCA or VCCB is 0 V - critical for safe hot-plug operation in modular ECUs |
| AEC-Q100 Grade 1 qualification | Validated for automotive use across –40°C to +125°C ambient, including temperature cycling, HTOL, and ESD stress tests per AEC specification |
| ±24-mA drive strength | Drives capacitive loads up to 50 pF while maintaining <1-ns skew across all 8 channels - suitable for parallel camera or display interfaces |
Applications
| Automotive Infotainment | ADAS Sensor Hub |
|---|---|
|
Use Scenario: Interfacing a 1.8-V application processor with a 3.3-V LVDS serializer in head-unit video routing. IC Role / Device Role / Timing Role: Bidirectional voltage translator managing pixel clock and data lanes between SoC and display driver IC. Use Value: Eliminates four discrete level shifters, reduces PCB area by 32 mm², and ensures sub-ns channel-to-channel skew for MIPI D-PHY compliance. |
Use Scenario: Aggregating radar, camera, and ultrasonic sensor data onto a central domain controller via parallel CMOS interfaces. IC Role / Device Role / Timing Role: 8-bit bus transceiver synchronizing asynchronous sensor readouts into a 3.3-V processing bus. Use Value: Bus-hold maintains valid data states during sensor sleep modes, preventing spurious interrupts and reducing system wake-up latency by 15 µs. |
| Industrial PLC Backplane | Medical Imaging Module |
|
Use Scenario: Isolating 2.5-V FPGA configuration memory from a 3.3-V I/O expansion module in modular automation hardware. IC Role / Device Role / Timing Role: Direction-controlled transceiver enabling firmware updates and diagnostics over shared backplane bus. Use Value: IOFF protection prevents back-driving during hot-swap insertion, meeting IEC 61000-4-2 Level 4 immunity requirements. |
Use Scenario: Connecting a low-power 1.8-V image sensor ASIC to a 3.3-V FPGA-based image preprocessor in portable ultrasound devices. IC Role / Device Role / Timing Role: Voltage-translating buffer preserving timing margins for 40-MHz pixel clock distribution. Use Value: 3.7-ns propagation delay ensures setup/hold compliance at full rate, avoiding frame drop in real-time B-mode imaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC8T245RHLR | AVC family: 1.2–3.6-V operation, DOCTM dynamic drive, 1.8-ns max tpd at 2.5 V | Higher speed but no AEC-Q100 qualification; intended for commercial computing, not automotive | Select when >150-MHz data rates are required and automotive qualification is unnecessary |
| TXS0108EPRJR | Auto-direction sensing; no DIR pin; 1.65–3.6-V operation; lower drive (±8 mA) | Lacks bus-hold and AEC-Q100 rating; optimized for space-constrained IoT nodes, not safety-critical systems | Select for simplified control logic in non-automotive embedded designs where board space is premium |
Compared with SN74LVC8T245MDWREP, SN74AVC8T245RHLR delivers faster timing but sacrifices automotive reliability, while TXS0108EPRJR reduces pin count at the cost of deterministic direction control and robustness - making SN74LVC8T245MDWREP the optimal choice for AEC-Q100-compliant, mixed-voltage bus bridging.
Availability
SN74LVC8T245MDWREP is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS sensor fusion modules, and industrial PLC backplanes requiring stable component supply across extended product lifecycles.
Supply support for SN74LVC8T245MDWREP 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 logic solutions, with over 90 years of innovation in electronic components and systems.
SN74LVC8T245MDWREP belongs to TI's LVC logic family - engineered for low-voltage, high-speed, automotive-grade digital interfacing in mixed-supply environments where reliability, signal integrity, and long-term supply stability are critical.
FAQ
What voltage ranges does the SN74LVC8T245MDWREP support on its A and B ports?
The SN74LVC8T245MDWREP supports independent supply voltages from 1.65 V to 3.6 V on both VCCA and VCCB. This allows it to translate between common logic domains such as 1.8-V microcontrollers and 3.3-V peripherals. The device maintains full functionality across the entire range, with guaranteed timing and drive performance specified at 1.8 V, 2.5 V, and 3.3 V. SN74LVC8T245MDWREP does not support 5-V operation on either side.
Is the SN74LVC8T245MDWREP pin-compatible with standard SOIC-24 transceivers like the SN74LVC245A?
Yes, SN74LVC8T245MDWREP uses the same SOIC-24 (DW) package footprint and pinout as industry-standard octal transceivers including SN74LVC245A, enabling drop-in replacement in existing layouts. Pin assignments for A/B data lines, DIR, OE, VCCA, VCCB, and GND match JEDEC MS-013AC mechanical specifications. SN74LVC8T245MDWREP retains identical control logic behavior but adds bus-hold and IOFF features not present in legacy variants.
Does the SN74LVC8T245MDWREP require external pull-up or pull-down resistors on its data lines?
No, SN74LVC8T245MDWREP integrates bus-hold circuitry on all A- and B-side I/Os, eliminating the need for external pull resistors. Each input maintains its last-valid logic state with ±10 µA holding current, reducing BOM count, PCB area, and potential noise coupling. This feature remains active regardless of OE or DIR state and functions across the full operating temperature range, including at –40°C and +125°C.
How does the SN74LVC8T245MDWREP handle power sequencing when VCCA and VCCB are powered at different times?
SN74LVC8T245MDWREP includes IOFF circuitry that disables all I/Os and blocks current flow when either VCCA or VCCB is at 0 V, preventing back-powering and latch-up during asymmetric power-up/down sequences. This ensures safe hot-plug operation in modular automotive ECUs and industrial backplanes. SN74LVC8T245MDWREP meets AEC-Q100 stress test requirements for power sequencing robustness.
What is the maximum data rate supported by the SN74LVC8T245MDWREP in a typical automotive application?
With a typical propagation delay of 3.7 ns at 3.3 V and channel-to-channel skew under 0.5 ns, SN74LVC8T245MDWREP supports reliable operation at >100 MHz in controlled-impedance environments. In automotive applications such as infotainment video routing or sensor data aggregation, it reliably handles 80-MHz parallel interfaces (e.g., 8-bit camera data buses) while maintaining setup/hold timing margins per AEC-Q100 requirements. SN74LVC8T245MDWREP performance is validated across –40°C to +125°C.
SN74LVC8T245MDWREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 24-SOIC (0.295", 7.50mm 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:
- 32mA, 32mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
SN74LVC8T245MDWREP FAQ
1.How can I place an order for SN74LVC8T245MDWREP through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC8T245MDWREP 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 SN74LVC8T245MDWREP reliable?
The price and inventory of SN74LVC8T245MDWREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC8T245MDWREP is usually 5 days.
3.What payment methods are accepted for SN74LVC8T245MDWREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC8T245MDWREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC8T245MDWREP?
SN74LVC8T245MDWREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC8T245MDWREP 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 SN74LVC8T245MDWREP?
For technical support, including SN74LVC8T245MDWREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC8T245MDWREP requirements.
6.How does Aetrix verify that SN74LVC8T245MDWREP is sourced from the original manufacturer or authorized distributors?
All SN74LVC8T245MDWREP 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 SN74LVC8T245MDWREP meets industry standards.
7.What is the process for return or replacement of SN74LVC8T245MDWREP?
All SN74LVC8T245MDWREP units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC8T245MDWREP, 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 SN74LVC8T245MDWREP part is unused and in its original packaging.
Return procedure for SN74LVC8T245MDWREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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