My Inquiry
My Account
Texas Instruments SN74AVCA164245VR
- Part No.:
- SN74AVCA164245VR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN74AVCA164245VR.pdf
- Description:
- IC TRANSLATOR BIDIR 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,589
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74AVCA164245VR from Texas Instruments is a 16-bit dual-supply bus transceiver with configurable voltage translation and 3-state outputs, supporting bidirectional level-shifting between 1.4 V–3.6 V rails (e.g., 1.8 V ↔ 3.3 V). It features dynamic output control (DOC™), Ioff partial-power-down protection, and ±24 mA drive at 2.5 V. Used in mixed-voltage system interconnects such as FPGA-to-ASIC data buses.
For engineers reviewing the SN74AVCA164245VR datasheet, SN74AVCA164245VR pinout, SN74AVCA164245VR application, or SN74AVCA164245VR equivalent, key selection criteria include dual-rail voltage flexibility, DIR/OE-controlled directionality, high-impedance isolation during power sequencing, and TVSOP-48 package compatibility with space-constrained PCB layouts.
Technical Context
This device implements two independent 8-bit transceiver sections (1A↔1B and 2A↔2B), each with dedicated DIR and OE controls referenced to VCCA. Control inputs (1DIR, 2DIR, 1OE, 2OE) are VCCA-referenced, ensuring reliable logic thresholds across the full 1.4 V–3.6 V VCCA range.
The DOC™ circuitry dynamically modulates output impedance during signal transitions-initially lowering it for fast edge drive, then raising it to suppress switching noise. Ioff protection disables outputs and blocks current backflow when either VCCA or VCCB = GND, enabling safe hot-insertion and partial-power-down operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA / VCCB Range | 1.4 V to 3.6 V each - enables universal bidirectional translation among 1.5 V, 1.8 V, 2.5 V, and 3.3 V domains without external biasing. |
| IOH / IOL Drive | ±24 mA at 2.5 V - matches standard LVTTL/LVCMOS output strength for direct interface with legacy or mixed-voltage loads. |
| tpd (Max) | 8.6 ns (VCCA=1.8 V, VCCB=3.3 V) - supports >100 MHz data rates in high-speed interconnects with tight timing budgets. |
| Ioff | ±10 µA max - prevents damaging back-current during power sequencing or standby, critical for system-level reliability. |
| VIH/VIL (Control) | VCCA-referenced thresholds (e.g., VIH = VCCA × 0.65 min) - eliminates need for level-shifters on DIR/OE lines, simplifying control logic design. |
| ESD Rating | 2000-V HBM - meets industrial-grade robustness requirements for board-level handling and field operation. |
Pinout & Package
SN74AVCA164245VR uses a 48-pin TVSOP (DGV) package, 7.1 mm × 4.4 mm × 1.2 mm max height, JEDEC MO-153 compliant, with 0.4 mm pitch and Q1 pin-1 orientation in tape.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input | Active-HIGH signals referenced to VCCA; determine data flow direction per 8-bit section (A→B or B→A). |
| 1OE, 2OE | Output enable input | Active-LOW signals referenced to VCCA; place corresponding port outputs in high-impedance state for bus isolation. |
| 1A1–1A8, 2A1–2A8 | A-port data I/O | Track VCCA supply; tolerate input voltages up to VCCA + 0.5 V, enabling overvoltage-tolerant interfacing. |
| 1B1–1B8, 2B1–2B8 | B-port data I/O | Track VCCB supply; tolerate input voltages up to VCCB + 0.5 V, supporting mixed-voltage domain bridging. |
| VCCA, VCCB | Power supplies | Independent rails; each powers its respective port and associated control logic, enabling true dual-voltage operation. |
| GND | Ground reference | Eight dedicated ground pins distributed across package for low-inductance return paths and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail configurable voltage translation | Each port operates independently across 1.4 V–3.6 V, enabling seamless 1.8 V ↔ 2.5 V, 1.5 V ↔ 3.3 V, or other combinations without external components. |
| Dynamic Output Control (DOC™) | Reduces simultaneous switching noise by modulating output impedance mid-transition-low-Z for fast edge, high-Z for quiet steady state. |
| Ioff partial-power-down protection | Automatically disables outputs and blocks reverse current when either VCCA or VCCB = GND, eliminating need for external isolation switches. |
| Voltage-tolerant I/O | Inputs/outputs withstand up to 4.6 V regardless of supply rail, allowing safe interfacing with higher-voltage peripherals during power-up/down sequences. |
| Widebus™ architecture | Optimized for high-density, low-skew bus applications with matched propagation delays across all 16 channels (tpd variation ≤ 1.5 ns). |
Applications
| Industrial PLC Backplane Interconnect | FPGA-to-Memory Interface |
|---|---|
|
Use Scenario: Bridging 1.8-V FPGA I/O banks to 3.3-V legacy memory modules in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional voltage translator and bus isolator, controlled by FPGA GPIOs for direction and enable. Use Value: Eliminates discrete level-shifter arrays, reduces BOM count by 8×, and ensures glitch-free handshaking during clock domain crossings. |
Use Scenario: Connecting a 2.5-V ASIC controller to 1.5-V DDR2 SDRAM in embedded networking equipment. IC Role / Device Role / Timing Role: Dual-rail transceiver managing address/data/control lines with synchronized DIR/OE timing. Use Value: Maintains sub-10 ns tpd skew across all 16 bits, preserving setup/hold margins required for DDR2 400 MT/s operation. |
| Automotive ADAS Sensor Hub | Server Baseboard Management |
|
Use Scenario: Isolating 3.3-V camera sensor data lanes from 1.8-V image processing SoC in advanced driver-assistance systems. IC Role / Device Role / Timing Role: Hot-plug-capable bus transceiver with Ioff protection during sensor module insertion/removal. Use Value: Prevents back-driving into powered-down SoC I/O, meeting ISO 11898-2 fault tolerance requirements for automotive ECUs. |
Use Scenario: Translating SMBus/I²C signals between 3.3-V baseboard management controller and 1.2-V PMBus-configurable VRMs. IC Role / Device Role / Timing Role: Low-power, voltage-flexible interface with VCCA-referenced control inputs simplifying host-side logic design. Use Value: Supports 100 kHz–400 kHz I²C speeds while consuming <40 µA ICCA/ICCB in standby, extending BMC runtime during low-power states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVCB164245VR | Lacks DOC™ circuitry; fixed output drive strength; identical pinout and voltage ranges. | No dynamic noise suppression - less suitable for high-density, noise-sensitive routing near RF sections. | Choose when cost sensitivity outweighs EMI performance needs and layout allows additional filtering. |
| TXB0108PWR | 8-bit, auto-direction sensing, no DIR/OE pins; 1.2 V–3.6 V VCCA, 1.65 V–5.5 V VCCB; smaller TSSOP-20 package. | Unidirectional auto-sensing limits use in synchronous bidirectional protocols like DDR or PCIe sideband. | Prefer for simple 8-bit GPIO expansion where direction is data-dependent and space is constrained. |
Compared with SN74AVCB164245VR and TXB0108PWR, SN74AVCA164245VR uniquely combines 16-bit capacity, explicit DIR/OE control for deterministic timing, and DOC™-enabled noise reduction-making it optimal for high-speed, mixed-voltage synchronous bus interfaces requiring predictable latency and low crosstalk.
Availability
SN74AVCA164245VR is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA-to-memory subsystems, automotive ADAS sensor hubs, and server baseboard management requiring stable component supply across extended temperature and long-life programs.
Supply support for SN74AVCA164245VR 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 high-reliability interface solutions.
SN74AVCA164245VR belongs to TI's Widebus™ family, engineered specifically for high-speed, low-noise, mixed-voltage system interconnects in industrial automation, communications infrastructure, and automotive electronics.
FAQ
What voltage ranges does SN74AVCA164245VR support on its A and B ports?
SN74AVCA164245VR supports independent supply voltages from 1.4 V to 3.6 V on both VCCA and VCCB rails. This allows bidirectional translation between common logic families including 1.5 V, 1.8 V, 2.5 V, and 3.3 V domains without external components. The device maintains full functionality-including Ioff protection and DOC™ operation-across this entire range, as verified in TI's SCES395B datasheet under Recommended Operating Conditions.
How does the DOC™ circuitry in SN74AVCA164245VR reduce noise?
The DOC™ (Dynamic Output Control) circuitry in SN74AVCA164245VR lowers output impedance at signal transition onset to deliver strong edge drive, then raises impedance once the signal settles-reducing simultaneous switching noise (SSN) by limiting current surge duration. As documented in Figure 1 and the "Dynamic Output Control" section of SCES395B, this behavior delivers ±24 mA drive capability while minimizing ground bounce and crosstalk in dense PCB layouts.
Can SN74AVCA164245VR be used when only one supply rail is powered?
Yes. SN74AVCA164245VR includes Ioff circuitry that places both A and B ports in high-impedance state if either VCCA or VCCB is at GND, preventing damaging current backflow. This feature is explicitly confirmed in the Functional Description and Absolute Maximum Ratings sections of SCES395B, making SN74AVCA164245VR suitable for partial-power-down scenarios such as hot-swap modules or phased system startup.
What is the pinout compatibility between SN74AVCA164245VR and SN74AVCA164245GR?
SN74AVCA164245VR (TVSOP-DGV) and SN74AVCA164245GR (TSSOP-DGG) share identical 48-pin functional pinouts per TI's terminal assignment diagrams in SCES395B, but differ in physical dimensions and pitch: DGV is 7.1 mm × 4.4 mm × 1.2 mm with 0.4 mm pitch, while DGG is 12.5 mm × 6.1 mm × 1.2 mm with 0.5 mm pitch. No PCB redesign is needed for logic-level replacement, but mechanical layout must accommodate the smaller TVSOP footprint.
Does SN74AVCA164245VR require external pull-up resistors on its control inputs?
TI recommends tying OE to VCCA through a pull-up resistor to ensure high-impedance state during power-up or power-down; minimum resistance depends on driver sink capability. DIR inputs do not require pull-ups as they default to defined logic states. This guidance appears in the "Control Inputs" subsection of the Functional Description in SCES395B, and applies identically to SN74AVCA164245VR due to its shared DGV package implementation.
SN74AVCA164245VR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVCA
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 2
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 1.4 V ~ 3.6 V
- Voltage - VCCB:
- 1.4 V ~ 3.6 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:
- 48-TFSOP (0.173", 4.40mm Width)
SN74AVCA164245VR FAQ
1.How can I place an order for SN74AVCA164245VR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AVCA164245VR 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 SN74AVCA164245VR reliable?
The price and inventory of SN74AVCA164245VR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AVCA164245VR is usually 5 days.
3.What payment methods are accepted for SN74AVCA164245VR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AVCA164245VR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AVCA164245VR?
SN74AVCA164245VR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AVCA164245VR 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 SN74AVCA164245VR?
For technical support, including SN74AVCA164245VR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AVCA164245VR requirements.
6.How does Aetrix verify that SN74AVCA164245VR is sourced from the original manufacturer or authorized distributors?
All SN74AVCA164245VR 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 SN74AVCA164245VR meets industry standards.
7.What is the process for return or replacement of SN74AVCA164245VR?
All SN74AVCA164245VR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AVCA164245VR, 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 SN74AVCA164245VR part is unused and in its original packaging.
Return procedure for SN74AVCA164245VR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74AVCA164245VR 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…
