My Inquiry
My Account
Texas Instruments SN74LVCC3245ADWE4
- Part No.:
- SN74LVCC3245ADWE4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN74LVCC3245ADWE4.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,752
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVCC3245ADWE4 from Texas Instruments is an octal noninverting bus transceiver with dual-supply voltage translation (2.3V–3.6V on A port, 3V–5.5V on B port), 3-state outputs, and VCC isolation. It enables bidirectional level-shifting between 2.5V/3.3V and 5V domains in real-time data buses, supporting up to 24mA drive strength at 3V and operating across –40°C to +85°C.
For engineers reviewing the SN74LVCC3245ADWE4 datasheet, SN74LVCC3245ADWE4 pinout, SN74LVCC3245ADWE4 application, or SN74LVCC3245ADWE4 equivalent, key selection criteria include its glitch-free power sequencing, Ioff partial-power-down protection, VCCA-referenced control inputs, and robust 2000V HBM ESD rating - all critical for mixed-voltage industrial and medical bus interfaces.
Technical Context
The SN74LVCC3245ADWE4 implements asynchronous bidirectional data flow controlled by DIR and OE inputs referenced solely to VCCA. Its dual-rail architecture isolates A- and B-port logic domains while maintaining signal integrity during cross-voltage translation, with propagation delays as low as 1ns (tPHL/tPLH) under 3.3V→5V conditions.
VCC isolation ensures both ports enter high-impedance state if either VCCA or VCCB drops below 100mV or floats - a hardware-level safety feature preventing backdrive current. The device supports partial-power-down via Ioff circuitry, limiting leakage to ±2μA when powered off, and tolerates input overvoltage up to VCCA+0.5V or VCCB+0.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| A-port supply range | 2.3V to 3.6V - enables direct interface with 2.5V/3.3V microcontrollers and FPGAs without level-shifter buffers |
| B-port supply range | 3V to 5.5V - supports legacy 5V peripherals, industrial I/O modules, and analog front-end subsystems |
| Output drive strength | 24mA at 3V - sufficient to drive heavy capacitive loads (e.g., long PCB traces, multiple CMOS inputs) without external buffers |
| Propagation delay | 1ns to 9.4ns - sub-10ns timing allows use in high-speed parallel buses up to ~100MHz effective throughput |
| ESD rating | ±2000V HBM - meets industrial handling requirements and reduces need for external TVS protection on bus lines |
| Operating temperature | –40°C to +85°C - qualified for deployment in ultrasound scanners, solar inverters, and embedded SBCs without derating |
| Ioff leakage | ±2μA max - prevents damaging back-current when one supply rail is powered down during system sleep or fault recovery |
Pinout & Package
SN74LVCC3245ADWE4 is packaged in a 24-pin SOIC (DW) package measuring 15.5mm × 10.3mm, with standard 1.27mm pitch and surface-mount footprint compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA (Pin 1) | A-port power supply | Reference for all A-port I/O and control inputs (DIR, OE); must be stable before enabling operation |
| DIR (Pin 2) | Direction control input | High = A→B data flow; Low = B→A data flow; referenced to VCCA, not VCCB |
| A1–A8 (Pins 3–10) | A-port bidirectional I/O | 8-bit data path tied to VCCA domain; tolerant of inputs up to VCCA+0.5V |
| GND (Pins 11, 12) | Ground reference | Dual GND pins reduce ground bounce and improve noise immunity in high-speed switching |
| OE (Pin 22) | Output enable (active-low) | Drives all A/B ports into 3-state when high; referenced to VCCA, enabling clean shutdown coordination |
| B1–B8 (Pins 14–21) | B-port bidirectional I/O | 8-bit data path tied to VCCB domain; tolerant of inputs up to VCCB+0.5V |
| VCCB (Pin 24) | B-port power supply | Reference for all B-port I/O; independent of VCCA, enabling true dual-voltage operation |
| NC (Pins 13, 23) | No internal connection | Unbonded pins - must remain unconnected; no routing or thermal relief required |
Key Features
| Feature | Design Value |
|---|---|
| Glitch-free power sequencing | Either VCCA or VCCB may power up/down in any order without inducing false transitions on I/O lines - eliminates risk of spurious resets in downstream peripherals |
| VCC isolation & disconnect | Automatic high-impedance entry on both ports if either supply falls below 100mV or floats - prevents backfeed damage during hot-swap or brownout events |
| VCCA-referenced control inputs | DIR and OE thresholds track VCCA, not VCCB - simplifies control logic design when using 3.3V microcontrollers to manage 5V buses |
| 24mA output drive at 3V | Supports fan-out to ≥10 standard CMOS loads or ≤30pF trace capacitance without signal degradation - reduces need for repeater buffers |
| Robust latch-up immunity | Exceeds 250mA per JESD17 - ensures reliability in noisy industrial environments with transient coupling or ground shifts |
Applications
| Ultrasound Scanner | String Inverter |
|---|---|
Use Scenario: Interfacing 3.3V FPGA-based beamformer logic with 5V analog front-end (AFE) ADC/DAC modules in portable ultrasound systems. IC Role / Device Role / Timing Role: Bidirectional voltage translator enabling real-time echo data transfer between digital processing and analog signal chain domains. Use Value: Eliminates discrete level-shifter ICs and associated layout complexity while maintaining sub-10ns timing alignment critical for time-of-flight accuracy. |
Use Scenario: Connecting 3.3V microcontroller communication buses to 5V isolated gate drivers and sensor interfaces in photovoltaic string-level inverters. IC Role / Device Role / Timing Role: Isolated bus transceiver managing command/status exchange across voltage domains with guaranteed glitch-free startup during grid reconnection. Use Value: VCC isolation prevents latch-up during partial system power cycling, and Ioff protection avoids current backflow during MPPT controller sleep modes. |
| Central Inverter | Single Board Computer |
Use Scenario: Bridging 2.5V SoC peripherals (e.g., PCIe root complex) with 5V industrial Ethernet PHYs and CAN transceivers in utility-scale solar central inverters. IC Role / Device Role / Timing Role: Dual-rail octal transceiver providing scalable, pin-compatible voltage translation for multi-protocol I/O expansion. Use Value: Single-component solution replaces multiple discrete translators, reducing BOM count and improving thermal margin via distributed 24mA drive capability. |
Use Scenario: Enabling 3.3V ARM-based SBCs to communicate with legacy 5V peripheral cards (e.g., ISA-style I/O modules, RS-232 line drivers) in edge-computing gateways. IC Role / Device Role / Timing Role: Level-shifting bus interface supporting hot-plug detection and dynamic voltage negotiation between heterogeneous subsystems. Use Value: Glitch-free sequencing allows safe insertion/removal of 5V add-on cards without resetting the host SBC or corrupting memory-mapped I/O registers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC8T245RHLR | Single-supply (1.2V–3.6V), no VCCB rail; lower drive (12mA), no VCC isolation | Limited to sub-3.6V systems; unsuitable for 5V interfacing or partial-power-down scenarios | Choose only for cost-sensitive, single-voltage 3.3V↔2.5V applications where isolation and 5V support are unnecessary |
| TXB0108PWR | Auto-direction sensing (no DIR pin), lower drive (4mA), no Ioff spec, 1.2V–3.6V only | Cannot replace DIR-controlled synchronous buses; inadequate for high-capacitance or high-speed industrial links | Select only for simple push-pull GPIO expansion in battery-powered IoT nodes - not for deterministic bus protocols |
Compared with SN74LVCC3245ADWE4, SN74AVC8T245RHLR lacks dual-supply flexibility and VCC isolation, while TXB0108PWR sacrifices deterministic direction control and drive strength - making SN74LVCC3245ADWE4 the sole option for robust, high-drive, mixed-voltage industrial bus bridging with guaranteed power-sequence resilience.
Availability
SN74LVCC3245ADWE4 is available at Aetrix Electronics and suitable for ultrasound scanner interfaces, solar string inverter control buses, central inverter I/O expansion, and single-board computer peripheral bridging requiring stable component supply and long-term industrial lifecycle support.
Supply support for SN74LVCC3245ADWE4 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 connectivity technologies, with decades of experience in industrial, automotive, and medical-grade IC design and manufacturing.
The SN74LVCC3245ADWE4 belongs to TI's LVCC logic family, engineered specifically for reliable voltage translation in mixed-supply systems where power sequencing resilience, Ioff protection, and high-drive capability are mandatory for mission-critical bus interoperability.
FAQ
What voltage ranges does the SN74LVCC3245ADWE4 support on its A and B ports?
The SN74LVCC3245ADWE4 supports 2.3V to 3.6V on the A port (VCCA) and 3V to 5.5V on the B port (VCCB). This enables bidirectional translation between common logic families such as 2.5V/3.3V microcontrollers and 5V industrial peripherals. Both rails operate independently, and the device remains functional across the full specified range without external biasing.
How does the SN74LVCC3245ADWE4 handle power supply sequencing during system startup or shutdown?
The SN74LVCC3245ADWE4 features glitch-free power supply sequencing: either VCCA or VCCB may be powered on or off in any order without causing erroneous output transitions. If either supply drops below 100mV or floats, both A and B ports automatically enter high-impedance state - preventing data corruption or backdrive current in systems with staggered rail activation.
Is the SN74LVCC3245ADWE4 compatible with partial-power-down operation?
Yes. The SN74LVCC3245ADWE4 includes Ioff circuitry that disables outputs and limits input/output leakage to ±2μA when either VCCA or VCCB is at 0V. This prevents damaging current flow between powered and unpowered sections of a system - a critical feature for low-power sleep modes in ultrasound scanners and solar inverters.
What is the maximum output drive strength of the SN74LVCC3245ADWE4, and at what supply condition is it specified?
The SN74LVCC3245ADWE4 delivers up to 24mA output drive strength per pin, specified at VCCA = 3V and VCCB = 3V (A→B) or VCCA = 2.7V and VCCB = 4.5V (B→A). This high drive supports heavy capacitive loads and fan-out to multiple CMOS inputs without signal integrity degradation, making it suitable for industrial backplane and long-trace applications.
Are DIR and OE inputs referenced to VCCA or VCCB on the SN74LVCC3245ADWE4?
Both DIR and OE inputs are referenced exclusively to VCCA - their VIH and VIL thresholds scale with the A-port supply voltage. This simplifies control logic design when using a 3.3V microcontroller to manage a 5V B-port bus, eliminating level-shifting requirements for control signals and ensuring deterministic timing behavior across voltage domains.
SN74LVCC3245ADWE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCC
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 2.3 V ~ 3.6 V
- Voltage - VCCB:
- 3 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC (0.295", 7.50mm Width)
SN74LVCC3245ADWE4 FAQ
1.How can I place an order for SN74LVCC3245ADWE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCC3245ADWE4 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 SN74LVCC3245ADWE4 reliable?
The price and inventory of SN74LVCC3245ADWE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCC3245ADWE4 is usually 5 days.
3.What payment methods are accepted for SN74LVCC3245ADWE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVCC3245ADWE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVCC3245ADWE4?
SN74LVCC3245ADWE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVCC3245ADWE4 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 SN74LVCC3245ADWE4?
For technical support, including SN74LVCC3245ADWE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCC3245ADWE4 requirements.
6.How does Aetrix verify that SN74LVCC3245ADWE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVCC3245ADWE4 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 SN74LVCC3245ADWE4 meets industry standards.
7.What is the process for return or replacement of SN74LVCC3245ADWE4?
All SN74LVCC3245ADWE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCC3245ADWE4, 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 SN74LVCC3245ADWE4 part is unused and in its original packaging.
Return procedure for SN74LVCC3245ADWE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVCC3245ADWE4 Tags
-
74LVC1T45GW,125
Nexperia USA Inc.
-
74LVCH2T45DC,125
Nexperia USA Inc.
-
SN74LVC1T45DBVR
Texas Instruments
-
SN74LVC1T45DRLR
Texas Instruments
-
SN74LVC1T45DPKR
Texas Instruments
-
SN74LVC2T45DCTR
Texas Instruments
-
74LVC2T45GT,115
Nexperia USA Inc.
-
SN74LVC1T45YZPR
Texas Instruments
-
LSF0102DCUR
Texas Instruments
-
SN74LVC1T45DCKR
Texas Instruments
-
TXS0102DCTR
Texas Instruments
-
FXLP34P5X
onsemi
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…
