My Inquiry
My Account
Texas Instruments SN74LXC8T245QPWRQ1
- Part No.:
- SN74LXC8T245QPWRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LXC8T245QPWRQ1.pdf
- Description:
- IC TRANSLATOR BIDIR 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,696
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LXC8T245QPWRQ1 from Texas Instruments is an AEC-Q100 qualified 8-bit dual-supply bus transceiver enabling bidirectional voltage level translation between 1.1 V and 5.5 V logic domains, with configurable direction control (DIR), 3-state outputs (OE), Schmitt-trigger inputs, and Ioff-float isolation. It supports up to 420 Mbps in 3.3 V → 5.0 V translation and operates from –40°C to +125°C for automotive infotainment and ADAS fusion systems.
For engineers reviewing the SN74LXC8T245QPWRQ1 datasheet, SN74LXC8T245QPWRQ1 pinout, SN74LXC8T245QPWRQ1 application, or SN74LXC8T245QPWRQ1 equivalent, key selection criteria include dual-rail supply flexibility (VCCA/VCCB = 1.1–5.5 V), robust power sequencing, Ioff partial-power-down behavior, and guaranteed operation across automotive temperature and ESD stress conditions (±4000-V HBM).
Technical Context
The SN74LXC8T245QPWRQ1 implements a noninverting bidirectional translation architecture where Ax and control pins (DIR, OE) are referenced to VCCA, while Bx pins are referenced to VCCB. Its Schmitt-trigger inputs tolerate slow or noisy signals, and integrated dynamic pull-down resistors on I/Os reduce external component count.
VCC isolation (Ioff-float) ensures all I/Os enter high-impedance state when either VCCA or VCCB falls below 100 mV; control logic remains referenced solely to VCCA, decoupling direction and enable functionality from B-side supply stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range (VCCA / VCCB) | 1.1 V to 5.5 V each - enables flexible inter-domain interfacing (e.g., 1.2 V MCU ↔ 3.3 V sensor, 1.8 V FPGA ↔ 5.0 V display driver) |
| Max Data Rate | 420 Mbps (3.3 V → 5.0 V) - supports high-speed serial control and status bus bridging in ADAS domain controllers |
| Propagation Delay (tpd) | 2 ns (min) to 10 ns (max) at 3.3 V/5.0 V - ensures timing-critical signal integrity in real-time vehicle networks |
| Ioff Current | ±2.5 µA max (–40°C to 125°C) - guarantees safe partial-power-down during sleep modes without backfeeding |
| ESD Rating | ±4000 V HBM, ±1000 V CDM - meets automotive board-level robustness requirements per AEC-Q100 |
| Operating Temperature | –40°C to +125°C - validated for under-hood and cockpit-mounted ECUs per automotive thermal profiles |
| Drive Strength | 32 mA sink/source at 5 V - directly drives LEDs, buzzers, or logic inputs without external buffers |
Pinout & Package
PW package: 24-pin TSSOP, 7.80 mm × 6.40 mm body, exposed thermal pad (recommended grounded).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A8 | Data I/O (Port A) | Referenced to VCCA; bidirectional with Schmitt-trigger input threshold hysteresis (ΔVT ≥ 0.2 V) |
| B1–B8 | Data I/O (Port B) | Referenced to VCCB; independent voltage domain handling enables true level-shifting |
| DIR | Direction Control Input | High = A→B data flow; low = B→A; referenced to VCCA only - immune to VCCB fluctuations |
| OE | Output Enable Input | Low = active drive; high = 3-state; static pull-down allows floating control without external resistor |
| VCCA | Port A Supply | Power source for A-side logic, DIR, and OE - sets input thresholds and output drive levels for Port A |
| VCCB | Port B Supply | Power source for B-side logic - independent of VCCA, enabling asymmetric rail configurations |
| GND (×3) | Ground Reference | Three dedicated ground pins minimize ground bounce in high-speed bidirectional switching |
| PAD | Thermal Pad | Exposed copper pad for thermal dissipation; recommended to connect to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail level shifting | Independent 1.1–5.5 V operation on both ports eliminates need for external level translators in mixed-voltage automotive subsystems |
| VCC isolation (Ioff-float) | Automatic high-impedance I/O state when either VCCA or VCCB drops <100 mV - prevents back-current and enables hot-swap capability |
| Schmitt-trigger inputs | Hysteresis ≥0.2 V (ΔVT) rejects noise and slow edges from mechanical switches or long traces in cabin interfaces |
| Integrated pull-down resistors | Dynamic I/O pull-downs and static control-input pull-downs remove requirement for 10-kΩ external biasing components |
| AEC-Q100 qualification | Qualified to Grade 1 (–40°C to +125°C) with latch-up >100 mA and full automotive reliability testing |
Applications
| Infotainment Head Unit | ADAS Sensor Fusion Module |
|---|---|
Use Scenario: Interfacing a 1.2 V application processor with legacy 3.3 V audio codecs and touch controllers. IC Role / Device Role: Bidirectional voltage translator managing data, clock, and control lines across mismatched I/O voltages. Use Value: Eliminates discrete level-shifter ICs and reduces BOM count by consolidating eight channels in one AEC-Q100-compliant device. | Use Scenario: Aggregating camera, radar, and ultrasonic sensor data into a central domain controller operating at 1.8 V. IC Role / Device Role: Level-translating parallel status/control buses between heterogeneous sensor SoCs and the fusion MCU. Use Value: Supports 420 Mbps throughput in 3.3 V → 5.0 V mode and maintains signal integrity via low-skew (<0.5 ns) output timing. |
| Mechanical Switch Debouncing | Automotive Indicator Driver |
Use Scenario: Cleaning noisy contact closure signals from door handle or seat position switches before MCU sampling. IC Role / Device Role: Input conditioner using Schmitt-trigger inputs and internal pull-downs to reject bounce and EMI. Use Value: Removes need for RC filters and firmware debouncing routines - reduces latency and software overhead. | Use Scenario: Driving multiple 5 V LED indicators (e.g., gear position, hazard lights) from a 3.3 V microcontroller GPIO bank. IC Role / Device Role: High-drive (32 mA) level-shifting buffer translating logic states and sourcing current directly. Use Value: Delivers full brightness without external MOSFETs or current-limiting resistors on the MCU side. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC8T245QRGYRQ1 | Lower drive strength (12 mA), no Schmitt-trigger inputs, narrower VCC range (1.2–3.6 V) | Not suitable for noisy switch inputs or 5 V interface; limited to lower-speed, low-voltage domains | Select when cost sensitivity outweighs noise immunity and 5 V compatibility needs |
| TXS0108E-Q1 | Auto-direction sensing (no DIR pin), higher propagation delay (>15 ns), no Ioff-float isolation | Cannot support bidirectional control protocols requiring explicit DIR management; lacks VCC-disconnect safety | Prefer only for simple data-only bridges where direction is unidirectional or externally managed |
Compared with SN74AVC8T245QRGYRQ1 and TXS0108E-Q1, the SN74LXC8T245QPWRQ1 uniquely combines AEC-Q100 qualification, 420-Mbps capability, Schmitt-trigger noise rejection, and true Ioff-float isolation - making it the only option for robust, high-speed, mixed-rail automotive control buses requiring deterministic direction control and fail-safe power sequencing.
Availability
SN74LXC8T245QPWRQ1 is available at Aetrix Electronics and suitable for automotive infotainment head units, ADAS sensor fusion modules, mechanical switch debouncing circuits, and automotive indicator drivers requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for SN74LXC8T245QPWRQ1 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 specializing in analog, embedded processing, and automotive-grade silicon solutions.
The SN74LXC8T245QPWRQ1 belongs to TI's LXC logic family - designed specifically for automotive applications demanding wide-voltage-level translation, robust ESD performance, and guaranteed operation across harsh thermal and electrical environments.
FAQ
What is the maximum supported data rate for SN74LXC8T245QPWRQ1 in 3.3 V to 5.0 V level translation?
The SN74LXC8T245QPWRQ1 supports up to 420 Mbps in 3.3 V → 5.0 V up-translation mode, as specified in the TMAX parameter table under Section 6.12 of the official datasheet. This performance is validated across the full automotive temperature range (–40°C to +125°C) with 50% duty cycle input and defined pulse amplitude thresholds.
Does SN74LXC8T245QPWRQ1 support independent power supply sequencing for VCCA and VCCB?
Yes, the SN74LXC8T245QPWRQ1 features robust, glitch-free power supply sequencing. Its Ioff-float function ensures all I/Os enter high-impedance state if either VCCA or VCCB drops below 100 mV, preventing back-current and enabling safe hot-plug or staggered power-up sequences common in automotive domain controllers.
How does the Schmitt-trigger input feature benefit SN74LXC8T245QPWRQ1 in automotive applications?
The Schmitt-trigger inputs on SN74LXC8T245QPWRQ1 provide ≥0.2 V hysteresis (ΔVT), enabling reliable detection of slow or noisy signals from mechanical switches, potentiometers, or long harness runs. This eliminates external RC filtering and firmware debouncing, reducing system latency and improving functional safety compliance in cabin controls and sensor interfaces.
What package options are available for SN74LXC8T245QPWRQ1, and which is used in the PW variant?
The SN74LXC8T245QPWRQ1 is offered in three packages: PW (24-pin TSSOP), RHL (24-pin VQFN), and DGS (24-pin VSSOP). The "QPWRQ1" suffix explicitly denotes the PW (TSSOP) variant with 7.80 mm × 6.40 mm body size and exposed thermal pad - optimized for automated assembly and thermal performance in space-constrained automotive PCBs.
Is SN74LXC8T245QPWRQ1 compatible with legacy LVC-family level shifters?
Yes, the SN74LXC8T245QPWRQ1 is explicitly stated as compatible with the LVC family of level shifters. This ensures interoperability with existing designs using SN74LVC8T245 or similar devices, supporting drop-in upgrades where enhanced automotive qualification, wider voltage range (1.1–5.5 V), or improved ESD robustness (±4000-V HBM) are required.
SN74LXC8T245QPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LXC
- 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:
- 32mA, 32mA
- Voltage - Supply:
- 1.08V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
SN74LXC8T245QPWRQ1 FAQ
1.How can I place an order for SN74LXC8T245QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LXC8T245QPWRQ1 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 SN74LXC8T245QPWRQ1 reliable?
The price and inventory of SN74LXC8T245QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LXC8T245QPWRQ1 is usually 5 days.
3.What payment methods are accepted for SN74LXC8T245QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LXC8T245QPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LXC8T245QPWRQ1?
SN74LXC8T245QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LXC8T245QPWRQ1 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 SN74LXC8T245QPWRQ1?
For technical support, including SN74LXC8T245QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LXC8T245QPWRQ1 requirements.
6.How does Aetrix verify that SN74LXC8T245QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74LXC8T245QPWRQ1 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 SN74LXC8T245QPWRQ1 meets industry standards.
7.What is the process for return or replacement of SN74LXC8T245QPWRQ1?
All SN74LXC8T245QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LXC8T245QPWRQ1, 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 SN74LXC8T245QPWRQ1 part is unused and in its original packaging.
Return procedure for SN74LXC8T245QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LXC8T245QPWRQ1 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…
