My Inquiry
My Account
Texas Instruments SN74LVCC3245APWRG4
- Part No.:
- SN74LVCC3245APWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN74LVCC3245APWRG4.pdf
- Description:
- IC TRANSLATOR BIDIR 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,642
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVCC3245APWRG4 from Texas Instruments is an octal noninverting bus transceiver with dual-supply level translation, enabling bidirectional 8-bit data flow between 2.3V–3.6V (A port) and 3V–5.5V (B port) domains. It features VCC isolation, glitch-free power sequencing, 24mA drive strength at 3V, and operates across –40°C to +85°C. Used in ultrasound scanners and string inverters for voltage-domain bridging.
For engineers reviewing the SN74LVCC3245APWRG4 datasheet, SN74LVCC3245APWRG4 pinout, SN74LVCC3245APWRG4 application, or SN74LVCC3245APWRG4 equivalent, key selection criteria include dual-rail supply independence, direction-controlled translation, Ioff-enabled partial power-down, high-impedance fail-safe behavior under sub-100mV VCC, and TSSOP-24 package compatibility with industrial PCB layouts.
Technical Context
The SN74LVCC3245APWRG4 implements asynchronous bidirectional translation using separate VCCA (2.3V–3.6V) and VCCB (3V–5.5V) rails, with DIR and OE control inputs referenced solely to VCCA. Its internal architecture enforces strict isolation: if either VCCA or VCCB falls below 100mV or floats, all I/Os enter high-impedance state regardless of control logic.
It supports robust power sequencing-either rail may be powered on/off first without inducing output glitches-and integrates Ioff circuitry to block backflow current during partial power-down. Control input VIH/VIL thresholds scale with VCCA, while A/B port I/O voltage tolerances track their respective supplies up to VCC+0.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 2.3V to 3.6V - defines minimum/maximum supply for A-port logic and control inputs (DIR, OE) |
| VCCB Range | 3V to 5.5V - sets operational voltage window for B-port I/Os and enables 3.3V↔5V translation |
| Drive Strength | 24mA at 3V - ensures reliable signal integrity into heavy capacitive or resistive loads on either port |
| Propagation Delay | ≤9.4ns (A→B, VCCA=2.5V/VCCB=3.3V) - supports high-speed bus handshaking in real-time systems |
| Ioff Leakage | ±2μA max - prevents damaging current flow when one supply is off, critical for hot-swap and power-gated designs |
| ESD Rating | ±2000V HBM - meets industrial-grade ESD immunity requirements without external protection |
| Operating Temp | –40°C to +85°C - qualified for extended temperature operation in embedded power electronics and medical equipment |
Pinout & Package
TSSOP-24 package (7.8mm × 6.4mm), lead pitch 0.65mm, RoHS-compliant, surface-mountable with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA (Pin 1) | A-port power supply | Bias source for A-side I/Os and control inputs (DIR, OE); determines VIH/VIL thresholds |
| DIR (Pin 2) | Direction control input | High = A→B data flow; Low = B→A; referenced to VCCA, not VCCB |
| A1–A8 (Pins 3–10) | A-port bidirectional I/Os | 8-bit data path tracking VCCA; tolerate up to VCCA+0.5V input voltage |
| GND (Pins 11, 12) | Ground reference | Common return for both supply domains; must be low-impedance and star-connected |
| OE (Pin 22) | Output enable (active-low) | Drives all A/B outputs to high-Z when high; referenced to VCCA |
| B1–B8 (Pins 14–21) | B-port bidirectional I/Os | 8-bit data path tracking VCCB; tolerate up to VCCB+0.5V input voltage |
| VCCB (Pin 24) | B-port power supply | Bias source for B-side I/Os only; independent of VCCA and control logic |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply level translation | Enables seamless 2.5V/3.3V ↔ 5V system interconnect without external level shifters or voltage dividers |
| VCC isolation | Automatic high-impedance shutdown of all I/Os if either VCCA or VCCB drops below 100mV or floats |
| Glitch-free power sequencing | Eliminates false data transitions during asymmetric power-up/down, preventing peripheral misconfiguration |
| Ioff partial power-down | Blocks current backflow when one supply is off, protecting upstream drivers and meeting IEC 61000-4-2 system-level ESD robustness |
| 24mA drive capability | Supports direct connection to unterminated traces or multiple CMOS loads without buffer amplification |
Applications
| Ultrasound Scanner | String Inverter |
|---|---|
Use Scenario: Interfacing low-voltage FPGA control logic (3.3V) to high-voltage analog front-end ASICs (5V) in beamforming modules. IC Role / Device Role / Timing Role: Bidirectional data translator managing command/status exchange between voltage-isolated subsystems. Use Value: Eliminates need for discrete level-shifting components, reducing BOM count and layout area while maintaining timing-critical signal integrity. |
Use Scenario: Connecting microcontroller GPIOs (3.3V) to isolated gate drivers (5V) in MPPT control loops. IC Role / Device Role / Timing Role: Voltage-domain bridge enabling real-time PWM feedback and fault signaling across galvanically separated stages. Use Value: Provides deterministic propagation delay (<9.4ns) and Ioff protection during partial system reset, improving inverter reliability. |
| Central Inverter | Single Board Computer |
Use Scenario: Linking 3.3V communication processors to 5V CAN transceivers and sensor interfaces in grid-tie inverters. IC Role / Device Role / Timing Role: Asynchronous bus transceiver handling UART, SPI, and status lines across supply domains. Use Value: VCC isolation prevents latch-up during brownout conditions on either rail, enhancing system fault tolerance. |
Use Scenario: Expanding I/O voltage compatibility between 2.5V SoC peripherals and 5V legacy expansion headers. IC Role / Device Role / Timing Role: Octal bidirectional translator supporting hot-plug detection and configuration readback. Use Value: 24mA drive strength allows direct driving of LED indicators and optocoupler inputs without additional buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVCH8T245RHLR | Single-supply (1.2V–3.6V), no VCCB rail; lower max drive (12mA); no VCC isolation | Suitable only for sub-3.6V domain bridging; lacks 5V compatibility and fail-safe isolation | Choose when interfacing only low-voltage domains and board space is constrained (VQFN-24) |
| TXS0108EPRJR | Auto-direction sensing (no DIR pin); open-drain B-side; max 3.6V on B port; no VCCB >3.6V support | Cannot replace SN74LVCC3245APWRG4 in 5V B-port applications; unsuitable for push-pull 5V signaling | Select only for 3.3V↔3.3V/2.5V translation with automatic direction control and minimal control logic |
Compared with SN74LVCC3245APWRG4, SN74AVCH8T245RHLR offers smaller footprint but sacrifices 5V B-port support and VCC isolation; TXS0108EPRJR eliminates DIR wiring but cannot drive 5V buses or provide supply-fail safety-making SN74LVCC3245APWRG4 uniquely suited for industrial 3.3V/5V mixed-domain systems requiring robust power sequencing.
Availability
SN74LVCC3245APWRG4 is available at Aetrix Electronics and suitable for ultrasound scanner interfaces, solar string inverter control links, and single-board computer I/O expansion requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant TSSOP packaging.
Supply support for SN74LVCC3245APWRG4 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 expertise in interface ICs and power management solutions.
The SN74LVCC3245APWRG4 belongs to TI's LVCC logic family, engineered specifically for robust voltage-domain bridging in industrial, medical, and renewable energy systems where supply sequencing resilience and fail-safe isolation are mandatory.
FAQ
What is the function of the DIR pin on the SN74LVCC3245APWRG4?
The DIR (direction) pin on the SN74LVCC3245APWRG4 controls data flow direction: when DIR is high (referenced to VCCA), data passes from the A port to the B port; when DIR is low, data flows from B to A. It is an active-high control input powered by and referenced exclusively to VCCA-not VCCB-ensuring consistent logic thresholds regardless of B-port voltage.
Does the SN74LVCC3245APWRG4 support 5V operation on the B port?
Yes, the SN74LVCC3245APWRG4 fully supports 5V operation on the B port, with VCCB rated from 3V to 5.5V. Its B-port I/Os tolerate up to VCCB+0.5V (6V max), and electrical characteristics-including VOHB(min) = 3.2V at IOH = –24mA with VCCA = 2.7V/VCCB = 4.5V-are validated across this range per TI's SCAS585R datasheet.
How does the VCC isolation feature work in the SN74LVCC3245APWRG4?
The SN74LVCC3245APWRG4 enters high-impedance mode on all I/Os when either VCCA or VCCB falls below 100mV or is left floating-regardless of OE or DIR state. This VCC isolation prevents unintended signal coupling during power faults or hot-swap events, and is implemented via internal detection circuitry that disables output drivers without requiring external supervision.
Can the SN74LVCC3245APWRG4 be used with mismatched supply ramp rates?
Yes, the SN74LVCC3245APWRG4 guarantees glitch-free operation even when VCCA and VCCB power up or down at different rates or in arbitrary order. Its internal design eliminates output glitches during asymmetric sequencing-a key requirement verified in TI's characterization and documented in Section 7.4 of the SN74LVCC3245APWRG4 datasheet.
What is the maximum capacitive load the SN74LVCC3245APWRG4 can drive?
The SN74LVCC3245APWRG4 is characterized with CL = 30pF (A port) and CL = 50pF (B port) in switching tests, and its typical power dissipation capacitance is 38pF per transceiver when outputs are enabled. While not explicitly rated for higher loads, its 24mA drive strength supports moderate PCB trace capacitance and multiple CMOS inputs-designers should verify timing margins using the tPHL/tPLH values in Table 5.6 under actual load conditions.
SN74LVCC3245APWRG4 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-TSSOP (0.173", 4.40mm Width)
SN74LVCC3245APWRG4 FAQ
1.How can I place an order for SN74LVCC3245APWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCC3245APWRG4 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 SN74LVCC3245APWRG4 reliable?
The price and inventory of SN74LVCC3245APWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCC3245APWRG4 is usually 5 days.
3.What payment methods are accepted for SN74LVCC3245APWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVCC3245APWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVCC3245APWRG4?
SN74LVCC3245APWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVCC3245APWRG4 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 SN74LVCC3245APWRG4?
For technical support, including SN74LVCC3245APWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCC3245APWRG4 requirements.
6.How does Aetrix verify that SN74LVCC3245APWRG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVCC3245APWRG4 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 SN74LVCC3245APWRG4 meets industry standards.
7.What is the process for return or replacement of SN74LVCC3245APWRG4?
All SN74LVCC3245APWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCC3245APWRG4, 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 SN74LVCC3245APWRG4 part is unused and in its original packaging.
Return procedure for SN74LVCC3245APWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVCC3245APWRG4 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…
