My Inquiry
My Account
Texas Instruments SN74LVCC3245ADBRE4
- Part No.:
- SN74LVCC3245ADBRE4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN74LVCC3245ADBRE4.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,925
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVCC3245ADBRE4 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 3.3V/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 SN74LVCC3245ADBRE4 datasheet, SN74LVCC3245ADBRE4 pinout, SN74LVCC3245ADBRE4 application, or SN74LVCC3245ADBRE4 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 SN74LVCC3245ADBRE4 implements asynchronous bidirectional data flow controlled by DIR and OE inputs powered solely from VCCA. Its dual-rail architecture isolates A- and B-port logic domains, allowing independent supply ramping without output glitches or false transitions.
VCC isolation activates when either VCCA or VCCB falls below 100mV or floats, forcing all I/Os into high-impedance state. Control input thresholds (VIH/VIL) are strictly referenced to VCCA, while A- and B-port I/Os track their respective supply rails - enabling reliable translation across 2.3V↔5.5V boundaries.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| A-port supply range | 2.3V to 3.6V - supports 2.5V and 3.3V logic domains with full functionality |
| B-port supply range | 3V to 5.5V - enables interface with 3.3V, 5V microcontrollers and peripherals |
| Output drive strength | 24mA at 3V - sufficient for driving heavier capacitive loads or multiple CMOS inputs |
| Propagation delay (A→B) | 1ns to 9.4ns - ensures timing-critical bus synchronization in high-speed digital systems |
| ESD rating (HBM) | ±2000V - meets industrial-grade robustness requirements per JESD22-A114 |
| Operating temperature | –40°C to +85°C - qualified for extended industrial and medical equipment environments |
| Ioff leakage current | ±0.5μA max - prevents backflow current during partial power-down, protecting upstream circuitry |
Pinout & Package
SN74LVCC3245ADBRE4 is packaged in a 24-pin SSOP (DB) package measuring 8.2mm × 7.8mm, with gull-wing leads and standard JEDEC MO-153 compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA (Pin 1) | A-port power supply | Reference for A-port I/Os and control inputs (DIR, OE); must be stable before signal activity |
| DIR (Pin 2) | Direction control input | High = A→B data flow; Low = B→A data flow; referenced to VCCA voltage |
| A1–A8 (Pins 3–10) | A-port bidirectional I/Os | Track VCCA; tolerate input voltages up to VCCA + 0.5V (max 4.6V) |
| GND (Pins 11, 12) | Ground reference | Common return for both supply domains; requires low-inductance PCB connection |
| OE (Pin 22) | Output enable (active-low) | Drives all A/B ports to high-Z when high; referenced to VCCA |
| B1–B8 (Pins 14–21) | B-port bidirectional I/Os | Track VCCB; tolerate input voltages up to VCCB + 0.5V (max 6V) |
| VCCB (Pin 24) | B-port power supply | Reference for B-port I/Os; independent of VCCA for true level translation |
| NC (Pins 13, 23) | No internal connection | Unbonded die pads; must remain unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Glitch-free power sequencing | Either VCCA or VCCB may power up/down in any order without causing spurious output transitions |
| VCC isolation | Automatically places all I/Os in high-impedance state if either supply drops below 100mV or floats |
| Ioff partial-power-down protection | Blocks damaging backflow current when one supply is off, enabling hot-swap capability |
| VCCA-referenced control inputs | DIR and OE thresholds scale with VCCA, eliminating need for external level shifters on control lines |
| 24mA output drive at 3V | Supports direct interface to legacy 5V TTL loads or multiple CMOS inputs without buffers |
Applications
| Ultrasound Scanner | String Inverter |
|---|---|
|
Use Scenario: Interfacing low-voltage FPGA-based beamformer (2.5V/3.3V) with high-voltage analog front-end and power control ICs (5V). IC Role / Device Role / Timing Role: Bidirectional data translator managing command/status exchange between digital control domain and analog subsystem. Use Value: Eliminates need for discrete level-shifting components while maintaining signal integrity across mixed-supply boundaries under dynamic load conditions. |
Use Scenario: Connecting 3.3V microcontroller communication bus to 5V isolated gate drivers and sensor interfaces in photovoltaic string-level converters. IC Role / Device Role / Timing Role: Voltage-domain bridge enabling real-time fault reporting and PWM command transmission between control and power stages. Use Value: Provides robust, glitch-free handshaking during rapid power cycling of DC-link sections without corrupting control signals. |
| Central Inverter | Single Board Computer |
|
Use Scenario: Linking 3.3V system management MCU to 5V CAN transceivers, relay drivers, and thermal monitoring sensors in grid-tied inverters. IC Role / Device Role / Timing Role: Isolated bidirectional bus interface ensuring safe, sequenced communication during brownout recovery. Use Value: Enables VCC isolation to prevent latch-up during partial system resets and supports Ioff for safe firmware updates without hardware power cycle. |
Use Scenario: Expanding I/O capability of 3.3V SBC by interfacing with legacy 5V peripheral modules (e.g., displays, storage controllers, expansion cards). IC Role / Device Role / Timing Role: Level-translating bus extender providing additional address/data lines with minimal board space overhead. Use Value: Delivers 24mA drive strength to overcome trace capacitance in compact SBC layouts while maintaining signal fidelity at >20MHz data rates. |
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 | Suitable only for sub-3.6V domain translation; lacks 5V compatibility and supply-float protection | Choose when translating only between 1.8V/2.5V/3.3V domains with tight board space constraints |
| TXB0308RGER | Auto-direction sensing (no DIR pin), 3.6V max VCCA, no VCCB isolation threshold | Requires external pull-ups on B-side; less predictable timing in bidirectional burst traffic | Prefer for simple I²C/SPI extension where direction is infrequent and deterministic |
Compared with SN74AVC8T245RHLR and TXB0308RGER, the SN74LVCC3245ADBRE4 uniquely supports true 5V B-port operation with guaranteed VCC isolation and explicit DIR control - making it the only option for deterministic, high-drive, mixed-voltage industrial bus bridging requiring supply fault resilience.
Availability
SN74LVCC3245ADBRE4 is available at Aetrix Electronics and suitable for ultrasound scanner interfaces, solar string inverter control links, and single-board computer peripheral expansion requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SN74LVCC3245ADBRE4 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, with over 90 years of innovation in precision analog, power management, and interface technologies.
The SN74LVCC3245ADBRE4 belongs to TI's LVCC logic family, engineered specifically for robust mixed-voltage bus interfacing in industrial, medical, and renewable energy systems where supply sequencing reliability and level translation accuracy are mission-critical.
FAQ
What voltage ranges does the SN74LVCC3245ADBRE4 support on its A and B ports?
The SN74LVCC3245ADBRE4 supports 2.3V to 3.6V on the A port (VCCA) and 3V to 5.5V on the B port (VCCB). This allows bidirectional translation between common logic domains such as 2.5V ↔ 3.3V, 3.3V ↔ 5V, and 2.5V ↔ 5V. Both supplies operate independently, and the device remains functional across the full specified range without derating.
How does the SN74LVCC3245ADBRE4 handle power supply sequencing during system startup or shutdown?
The SN74LVCC3245ADBRE4 features glitch-free power supply sequencing: either VCCA or VCCB can be powered on or off in any order without causing unintended output transitions. If either supply drops below 100mV or floats, all I/Os automatically enter high-impedance state - preventing bus contention and downstream device misbehavior during brownouts or hot-swap events.
Is the SN74LVCC3245ADBRE4 compatible with 5V-tolerant microcontrollers on the B port?
Yes - the B port of the SN74LVCC3245ADBRE4 is fully 5V-compatible, with absolute maximum input voltage rated to VCCB + 0.5V (up to 6V) and recommended operating range extending to 5.5V. It safely interfaces with standard 5V CMOS and TTL logic, including microcontrollers, FPGAs, and peripheral ICs, without external clamping or resistive dividers.
What is the role of the DIR and OE pins, and how are they powered?
DIR (direction control) and OE (output enable, active-low) are both powered from VCCA and referenced to its voltage. DIR selects data flow direction (Low = B→A, High = A→B), while OE disables all outputs into high-impedance state. Their VCCA-referenced design eliminates the need for external level shifters on control lines - simplifying system design when interfacing with 2.5V/3.3V controllers.
Does the SN74LVCC3245ADBRE4 support partial power-down operation?
Yes - the SN74LVCC3245ADBRE4 incorporates Ioff circuitry that disables outputs and limits input/output leakage to ±0.5μA max when either VCCA or VCCB is at 0V. This prevents damaging current backflow during partial power-down states, enabling safe hot-plug operation and reducing system-level power management complexity in modular designs.
SN74LVCC3245ADBRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCC
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- 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-SSOP (0.209", 5.30mm Width)
SN74LVCC3245ADBRE4 FAQ
1.How can I place an order for SN74LVCC3245ADBRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCC3245ADBRE4 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 SN74LVCC3245ADBRE4 reliable?
The price and inventory of SN74LVCC3245ADBRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCC3245ADBRE4 is usually 5 days.
3.What payment methods are accepted for SN74LVCC3245ADBRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVCC3245ADBRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVCC3245ADBRE4?
SN74LVCC3245ADBRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVCC3245ADBRE4 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 SN74LVCC3245ADBRE4?
For technical support, including SN74LVCC3245ADBRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCC3245ADBRE4 requirements.
6.How does Aetrix verify that SN74LVCC3245ADBRE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVCC3245ADBRE4 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 SN74LVCC3245ADBRE4 meets industry standards.
7.What is the process for return or replacement of SN74LVCC3245ADBRE4?
All SN74LVCC3245ADBRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCC3245ADBRE4, 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 SN74LVCC3245ADBRE4 part is unused and in its original packaging.
Return procedure for SN74LVCC3245ADBRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVCC3245ADBRE4 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…
