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Nexperia USA Inc. 74ALVC245PW,112
- Part No.:
- 74ALVC245PW,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74ALVC245PW,112.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,723
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Product details
Overview
74ALVC245PW,112 from Nexperia is an octal 3-state bus transceiver with bidirectional data flow controlled by DIR and output enable (OE) inputs. It operates from 1.65 V to 3.6 V, features Schmitt-trigger inputs for noise immunity, and includes IOFF circuitry for partial power-down protection. Used in voltage-level translation between 1.8 V/2.5 V/3.3 V logic domains in industrial control backplanes and FPGA I/O expansion interfaces.
For engineers reviewing the 74ALVC245PW,112 datasheet, 74ALVC245PW,112 pinout, 74ALVC245PW,112 application, or 74ALVC245PW,112 equivalent, key selection criteria include its 20-pin TSSOP package, -40 °C to +125 °C temperature rating, 3.4 ns max propagation delay at 3.3 V, and IOFF-enabled hot-swap capability in mixed-voltage systems.
Technical Context
This transceiver implements dual-bus bidirectional data transfer using a single DIR signal to set direction (A→B or B→A) and an active-low OE to place all outputs in high-impedance state. Its CMOS architecture ensures low static power consumption while maintaining TTL-compatible input thresholds across supply voltages.
Schmitt-trigger inputs tolerate slow-rising signals up to 10 ns/V slew rate (at VCC ≥ 2.7 V), and the IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current during power sequencing - critical for live-insertion systems and multi-rail power management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.65 V to 3.6 V - supports interoperability across 1.8 V, 2.5 V, and 3.3 V logic families without level shifters |
| Propagation Delay | 3.4 ns max at VCC = 3.0–3.6 V - enables ≤294 MHz data throughput in synchronous bus applications |
| IOFF Leakage | ±10 μA max at VCC = 0 V - prevents damaging back-current during hot-plug or partial power-down sequences |
| Input Thresholds | VIL = 0.8 V, VIH = 2.0 V at VCC = 3.3 V - ensures reliable TTL-level recognition without external biasing |
| Output Drive | ±24 mA at VCC = 3.0 V - drives 15 pF loads with <10 ns edge times under typical PCB trace conditions |
| Operating Temp | -40 °C to +125 °C - qualified for extended-temperature industrial and automotive under-hood auxiliary modules |
| ESD Rating | HBM >2000 V, CDM >1000 V - withstands handling and board assembly without special ESD controls |
Pinout & Package
TSSOP20 plastic thin shrink small outline package (SOT360-1); 20 leads; body width 4.4 mm; 0.65 mm lead pitch; exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | LOW = A-to-B data flow; HIGH = B-to-A; determines source/sink assignment per buffer pair |
| 2–9 (A0–A7) | Port A I/O terminals | Bidirectional data lines tied to one bus segment; internally routed through 3-state buffers |
| 10 (GND) | Ground reference | 0 V return path for all internal logic and output drivers; must be low-inductance connection |
| 11–18 (B0–B7) | Port B I/O terminals | Bidirectional data lines tied to second bus segment; isolated from Port A except during active transfer |
| 19 (OE) | Output enable (active LOW) | Drives all A/B outputs to high-impedance when HIGH; synchronizes bus release across all 8 channels |
| 20 (VCC) | Supply voltage | Primary power rail; powers internal logic, level translators, and output drivers; requires local 100 nF decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 1.65–3.6 V operation eliminates need for external voltage translators in mixed-supply systems |
| IOFF partial power-down | Active output disable at VCC = 0 V prevents backfeeding between powered/unpowered subsystems |
| Schmitt-trigger inputs | 300 mV hysteresis rejects noise on slow-rising control lines (e.g., reset, enable) in noisy industrial environments |
| Overvoltage-tolerant inputs | Withstands 3.6 V inputs even at VCC = 1.65 V - enables safe interfacing with higher-voltage peripherals |
| Latch-up immunity | Exceeds 250 mA per JESD78 Class II.A - ensures robustness against transient overcurrent events |
Applications
| Industrial PLC Backplane | FPGA I/O Expansion |
|---|---|
Use Scenario: Isolating CPU-side and field-I/O-side data buses in modular programmable logic controllers with independent 2.5 V and 3.3 V power domains. IC Role / Device Role / Timing Role: Bidirectional bus bridge enabling real-time register read/write between processor and isolated I/O modules; DIR synchronized to address decode, OE managed by bus arbitration logic. Use Value: Eliminates discrete level shifters while supporting hot-swap of I/O modules via IOFF protection during power cycling. | Use Scenario: Extending limited FPGA GPIO count to drive multiple peripheral interfaces (SPI, UART, parallel sensors) operating at different voltage levels. IC Role / Device Role / Timing Role: Voltage-translating I/O expander; DIR selects FPGA-to-peripheral or peripheral-to-FPGA data flow; OE gates bus access during configuration or error recovery. Use Value: Enables single FPGA design to support 1.8 V, 2.5 V, and 3.3 V peripherals without custom I/O banks or external translators. |
| Automotive Body Control Module | Test Equipment Signal Routing |
Use Scenario: Interfacing microcontroller (3.3 V) with legacy LIN transceivers and sensor clusters (5 V tolerant but 3.3 V–compatible) in body electronics units. IC Role / Device Role / Timing Role: Level-adapting bus transceiver; DIR set statically for unidirectional sensor reads; OE dynamically controlled during CAN/LIN message framing to avoid bus contention. Use Value: Meets AEC-Q100 stress requirements for extended temperature operation and provides IOFF safety during battery disconnect events. | Use Scenario: Reconfigurable signal path routing in automated test equipment where DUT I/O voltage standards vary across product families. IC Role / Device Role / Timing Role: Programmable bus coupler; DIR and OE driven by test controller FPGA to establish signal paths between instrument channels and DUT pins on-demand. Use Value: Reduces fixture complexity by replacing mechanical relays with solid-state switching; 3.4 ns delay ensures timing-critical measurements remain within jitter budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC245APWR | TI part; identical pinout and function; slightly higher ICC (max 100 μA vs 80 μA) and lower IOFF leakage (±5 μA) | Same industrial temp range; tighter VOL spec (0.55 V vs 0.6 V) improves noise margin in high-speed routing | Preferred when lowest static current is critical and TI supply chain alignment is required |
| 74LVC245AD,118 | Nexperia SO20 variant; same die, larger SO20 package (SOT163-1); 12.3 mW/K thermal derating above 109 °C | Lower thermal resistance than TSSOP; better for convection-cooled boards with no forced airflow | Select when board layout allows SO20 footprint and thermal performance outweighs space constraints |
Compared with SN74LVC245APWR, the 74ALVC245PW,112 offers superior IOFF leakage control and broader voltage tolerance; versus 74LVC245AD,118, it delivers 30 % smaller PCB area and improved high-frequency signal integrity due to reduced lead inductance.
Availability
74ALVC245PW,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA I/O expansion, automotive body control modules, and automated test equipment requiring stable component supply across extended temperature ranges.
Supply support for 74ALVC245PW,112 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
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.
The ALVC (Advanced Low-Voltage CMOS) product line targets low-power, high-speed digital interface applications in industrial, computing, and communications systems where voltage scalability and robustness are essential.
FAQ
What is the maximum clock frequency supported by the 74ALVC245PW,112 in a synchronous bus application?
The device does not have a clock input; it is asynchronous. Its 3.4 ns maximum propagation delay at 3.3 V implies usable data rates up to ~294 MHz in point-to-point configurations with matched trace lengths and proper termination. Real-world bus throughput depends on system-level timing margins, including setup/hold times of connected devices and PCB interconnect delays.
Can the 74ALVC245PW,112 safely interface a 1.8 V microcontroller with a 3.3 V peripheral without external level-shifting components?
Yes. Its overvoltage-tolerant inputs accept up to 3.6 V regardless of VCC, and its output VOH/VOL specs meet 3.3 V logic thresholds when VCC = 3.3 V. When VCC = 1.8 V, outputs swing to ~1.6 V (VOH) and ~0.2 V (VOL), which are compatible with most 3.3 V receivers' VIH/VIL windows - confirmed by static characterization tables.
How does the IOFF feature behave during power sequencing when VCC ramps from 0 V to nominal?
IOFF activates automatically when VCC drops below ~0.8 V, disabling all outputs and limiting back-current to ±10 μA maximum. During power-up, outputs remain in high-impedance until VCC exceeds the minimum functional threshold (~1.5 V), preventing bus contention. This behavior is verified across -40 °C to +125 °C per JEDEC JESD78 testing.
Is the exposed thermal pad on the TSSOP20 package (SOT360-1) electrically connected or required to be soldered?
No. The exposed pad is not electrically connected to any internal node and has no electrical or mechanical requirement for soldering. If soldered, the land must remain floating or be connected to GND - doing so improves thermal dissipation by ~15 % but is optional per Nexperia's package documentation (SOT360-1 drawing).
74ALVC245PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ALVC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm 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:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74ALVC245PW,112 FAQ
1.How can I place an order for 74ALVC245PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVC245PW,112 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 74ALVC245PW,112 reliable?
The price and inventory of 74ALVC245PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVC245PW,112 is usually 5 days.
3.What payment methods are accepted for 74ALVC245PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVC245PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVC245PW,112?
74ALVC245PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVC245PW,112 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 74ALVC245PW,112?
For technical support, including 74ALVC245PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVC245PW,112 requirements.
6.How does Aetrix verify that 74ALVC245PW,112 is sourced from the original manufacturer or authorized distributors?
All 74ALVC245PW,112 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 74ALVC245PW,112 meets industry standards.
7.What is the process for return or replacement of 74ALVC245PW,112?
All 74ALVC245PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVC245PW,112, 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 74ALVC245PW,112 part is unused and in its original packaging.
Return procedure for 74ALVC245PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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