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Texas Instruments SN74LVCZ245ADW
- Part No.:
- SN74LVCZ245ADW
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVCZ245ADW.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,847
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Product details
Overview
SN74LVCZ245ADW from Texas Instruments is an octal bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 2.7-V and 3.6-V buses. It supports mixed-mode signaling (5-V inputs with 3.3-V VCC), delivers 6.3 ns max propagation delay at 3.3 V, and features Ioff and power-up 3-state for hot-insertion in backplane or modular systems.
For engineers reviewing the SN74LVCZ245ADW datasheet, SN74LVCZ245ADW pinout, SN74LVCZ245ADW application, or SN74LVCZ245ADW equivalent, key selection criteria include its 20-pin SOIC-DW package, 5.5-V tolerant inputs, ±24-mA drive strength at 3 V, and guaranteed high-impedance state during power sequencing.
Technical Context
The SN74LVCZ245ADW implements dual-directional data routing controlled by DIR (direction) and OE (output enable) logic inputs. Its Ioff circuitry blocks current backflow when powered down, while power-up 3-state ensures outputs remain high-impedance until VCC exceeds 1.5 V - critical for live insertion into powered backplanes.
It operates across –40°C to 85°C with full 3.3-V logic compatibility and 5-V input tolerance on all A/B ports. Electrical characteristics are fully specified for hot-swap environments per JESD78 Class II latch-up performance (>100 mA), and ground bounce (VOLP < 0.8 V) and undershoot (VOHV > 2 V) are characterized at 3.3 V/25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - defines valid supply window for guaranteed operation and timing compliance |
| Input Voltage Tolerance | Up to 5.5 V - enables direct interfacing with legacy 5-V logic without level shifters |
| Max Propagation Delay | 6.3 ns at 3.3 V - ensures sub-10-ns latency for high-speed bus bridging in real-time systems |
| Output Drive Strength | ±24 mA at 3 V - supports driving 50-Ω transmission lines or multiple LVC loads |
| Ioff Current | ±5 µA at 5.5 V - prevents damaging back-current during hot-plug events |
| Power-Up 3-State | Active below 1.5 V VCC - eliminates bus contention during power ramp-up/down sequences |
| Latch-Up Immunity | >100 mA per JESD78 Class II - meets industrial reliability requirements for robust system integration |
Pinout & Package
SN74LVCZ245ADW uses a 20-pin SOIC (DW) package measuring 7.5 mm × 12.8 mm × 2.65 mm (max height), with standard 1.27-mm lead pitch and RoHS-compliant CU NIPDAU finish. Thermal resistance θJA is 58°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction Control Input | Determines data flow direction: low = B→A, high = A→B |
| 2–9 (A1–A8) | Port A Data Inputs/Outputs | Bidirectional I/O pins connected to source bus; tolerate 5.5 V regardless of VCC |
| 10 (GND) | Ground Reference | Primary return path for all internal logic and output drivers |
| 11 (VCC) | Supply Voltage | 2.7–3.6 V power rail; powers internal logic and output stages |
| 12 (OE) | Output Enable Input | Low-active control: disables all outputs to high-impedance state |
| 13–20 (B1–B8) | Port B Data Inputs/Outputs | Bidirectional I/O pins connected to destination bus; identical voltage tolerance as Port A |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal translation | Enables seamless 5-V ↔ 3.3-V bus interfacing without external level shifters |
| Hot-insertion support | Ioff and power-up 3-state eliminate bus conflicts during live module replacement |
| Low ground bounce | VOLP < 0.8 V at 3.3 V ensures signal integrity in noise-sensitive applications |
| Controlled output undershoot | VOHV > 2 V prevents false triggering of downstream receivers during switching |
| Wide temperature range | –40°C to 85°C operation supports deployment in industrial and telecom infrastructure |
Applications
| Industrial Backplane Interface | Embedded System Bus Bridge |
|---|---|
Use Scenario: Connecting legacy 5-V peripheral modules to a modern 3.3-V FPGA-based controller in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional bus transceiver enabling synchronous data exchange between mismatched voltage domains with deterministic 6.3-ns latency. Use Value: Eliminates need for discrete level-shifting components, reducing BOM count and PCB area while maintaining signal integrity under EMI-prone factory conditions. | Use Scenario: Isolating processor memory bus from expansion I/O slots in medical imaging equipment requiring field-upgradable modules. IC Role / Device Role / Timing Role: Direction-controlled data conduit with OE-gated isolation, supporting hot-swap of diagnostic peripherals without system reset. Use Value: Ioff protection prevents damage during insertion/removal; power-up 3-state avoids bus contention during boot sequence. |
| Telecom Line Card Interfacing | Automotive ADAS Sensor Hub |
Use Scenario: Interfacing 5-V analog-to-digital converter (ADC) front-end with 3.3-V DSP core in base station radio units. IC Role / Device Role / Timing Role: Voltage-tolerant transceiver handling time-critical sampled data transfer with sub-10-ns timing budget. Use Value: 6.3-ns tpd and low VOLP ensure accurate timestamping of RF samples; latch-up immunity meets Telcordia GR-1089 requirements. | Use Scenario: Aggregating CAN, LIN, and camera sensor data onto a central domain controller in next-gen vehicle architectures. IC Role / Device Role / Timing Role: Level-translating bus buffer isolating 5-V sensor interfaces from 3.3-V microcontroller subsystems. Use Value: 5.5-V input tolerance accommodates automotive sensor supply variations; –40°C to 85°C rating matches under-hood thermal profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC245A | Lacks Z-series features: no Ioff, no enhanced ground bounce/undershoot specs, no explicit hot-insertion validation | Suitable only for static board-level designs without live insertion requirements | Select SN74LVCZ245ADW where hot-swap, bus isolation during power transitions, or strict noise control are mandatory |
| 74ALVC16245 | 16-bit, dual-supply capable (VCCA/VCCB), higher drive (±24 mA @ 2.5 V), but no Ioff or power-up 3-state | Used in wider data paths and dual-voltage domain bridging, not single-supply hot-plug scenarios | Choose SN74LVCZ245ADW for 8-bit, single-supply, hot-insertion-critical applications with tighter layout constraints |
Compared with SN74LVC245A and 74ALVC16245, the SN74LVCZ245ADW uniquely combines 8-bit bidirectional translation, Ioff-enabled hot-swap safety, and characterized noise margins - making it the only option qualified for live backplane upgrades in industrial and telecom infrastructure.
Availability
SN74LVCZ245ADW is available at Aetrix Electronics and suitable for industrial backplane interface, embedded system bus bridge, and telecom line card interfacing requiring stable component supply and long-term lifecycle support.
Supply support for SN74LVCZ245ADW 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, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The SN74LVCZ245ADW belongs to TI's LVCZ logic family, engineered specifically for robust mixed-voltage bus interfacing in hot-pluggable systems where power sequencing integrity and signal fidelity are non-negotiable.
FAQ
What is the maximum operating voltage on the input pins of the SN74LVCZ245ADW?
The SN74LVCZ245ADW input pins accept voltages up to 5.5 V regardless of VCC level, enabling direct connection to 5-V logic families while powered from a 3.3-V supply. This specification is guaranteed across the full operating temperature range (–40°C to 85°C) and is validated per absolute maximum ratings and recommended operating conditions in the official datasheet SCES275G.
Does the SN74LVCZ245ADW support hot insertion, and how is it implemented?
Yes, the SN74LVCZ245ADW supports hot insertion via two integrated features: Ioff circuitry disables outputs when VCC = 0, preventing back-current flow, and power-up 3-state holds outputs in high-impedance until VCC exceeds 1.5 V. These mechanisms are explicitly validated in the datasheet and meet JESD78 Class II latch-up immunity (>100 mA), making SN74LVCZ245ADW suitable for live backplane upgrades.
What is the propagation delay of the SN74LVCZ245ADW at 3.3 V, and under what conditions is it measured?
The SN74LVCZ245ADW has a maximum propagation delay (tpd) of 6.3 ns at VCC = 3.3 V ± 0.3 V, measured under switching conditions with CL = 30 pF and TA = 25°C. This value applies to both A→B and B→A data paths and is specified in the "Switching Characteristics" table of SCES275G, ensuring predictable timing in high-speed bus bridging applications.
Can the SN74LVCZ245ADW be used with a 2.5-V supply voltage?
No - the SN74LVCZ245ADW is specified only for VCC between 2.7 V and 3.6 V per its recommended operating conditions. Operation at 2.5 V falls outside this range and may result in undefined logic thresholds, increased propagation delay, or failure to meet output drive specifications. For 2.5-V systems, consider TI's ALVC or AUC logic families instead.
What package type and dimensions does the SN74LVCZ245ADW use?
The SN74LVCZ245ADW uses a 20-pin SOIC (DW) package per JEDEC MS-013, with body dimensions of 7.5 mm × 12.8 mm × 2.65 mm (max height), 1.27-mm lead pitch, and RoHS-compliant CU NIPDAU terminations. Its θJA thermal resistance is 58°C/W, and land pattern recommendations are documented in TI's DW0020A package outline.
SN74LVCZ245ADW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCZ
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN74LVCZ245ADW FAQ
1.How can I place an order for SN74LVCZ245ADW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCZ245ADW 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 SN74LVCZ245ADW reliable?
The price and inventory of SN74LVCZ245ADW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCZ245ADW is usually 5 days.
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SN74LVCZ245ADW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVCZ245ADW 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 SN74LVCZ245ADW?
For technical support, including SN74LVCZ245ADW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCZ245ADW requirements.
6.How does Aetrix verify that SN74LVCZ245ADW is sourced from the original manufacturer or authorized distributors?
All SN74LVCZ245ADW 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 SN74LVCZ245ADW meets industry standards.
7.What is the process for return or replacement of SN74LVCZ245ADW?
All SN74LVCZ245ADW units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCZ245ADW, 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 SN74LVCZ245ADW part is unused and in its original packaging.
Return procedure for SN74LVCZ245ADW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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