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NXP Semiconductors 74ALVT16245DGG,518
- Part No.:
- 74ALVT16245DGG,518
- Manufacturer:
- NXP Semiconductors
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVT16245DGG,518.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,194
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Product details
Overview
74ALVT16245DGG,518 from Philips Semiconductors is a 2.5V/3.3V 16-bit non-inverting bus transceiver with 3-state outputs, bidirectional data flow controlled by DIR and OE inputs, ±64mA/–32mA drive capability, bus-hold inputs, and 48-pin TSSOP packaging. It interfaces between mixed-voltage domains in high-speed digital systems such as memory expansion buses and FPGA I/O bridging.
For engineers reviewing the 74ALVT16245DGG,518 datasheet, 74ALVT16245DGG,518 pinout, 74ALVT16245DGG,518 application, or 74ALVT16245DGG,518 equivalent, key selection criteria include 5V-tolerant I/O at 2.5V/3.3V VCC, propagation delay ≤1.5ns (typ, 3.3V), output disable time ≤3.5ns (max), bus-hold functionality eliminating external pull-ups, and JEDEC-compliant latch-up protection.
Technical Context
The 74ALVT16245DGG,518 implements dual 8-bit transceiver sections (1A↔1B and 2A↔2B), each with independent DIR and OE controls enabling flexible bidirectional data routing. Its BiCMOS architecture supports simultaneous 2.5V and 3.3V supply operation while maintaining TTL-compatible input thresholds and 5V I/O tolerance.
Propagation delay skew is specified at ≤267ps (tPS max, VCC=3.3V), and dynamic switching thresholds (VIHD/VILD) vary predictably with frequency and VCC-critical for timing closure in multi-load parallel buses. Power-up 3-state behavior ensures glitch-free initialization without external reset coordination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3–2.7V or 3.0–3.6V: Dual-voltage support enables interoperability across 2.5V logic and 3.3V system rails. |
| tPLH / tPHL | 1.5ns (max, 3.3V, CL=50pF): Enables >300MHz bus operation with margin for trace delays and loading. |
| IOL / IOH | 64mA sink / –32mA source (3.3V): Drives heavy capacitive loads (e.g., 150pF+ traces) without signal degradation. |
| VIH / VIL | 1.7V / 0.7V (3.3V range): TTL-compatible thresholds ensure reliable interfacing with legacy 5V peripherals. |
| Bus-Hold Current | ±75µA to ±140µA (3V): Maintains valid logic states on floating A/B port pins-no external pull resistors required. |
| ICCZ | 70µA (3.3V, outputs disabled): Ultra-low standby current preserves power in idle bus segments. |
| ESD Rating | 2000V HBM / 400V MM: Robust handling during board assembly and live insertion scenarios. |
Pinout & Package
48-pin plastic thin shrink small outline package (TSSOP), body width 6.1mm, SOT362-1 footprint, lead pitch 0.5mm, RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24 | nDIR | Direction control: Low = A→B transfer; High = B→A transfer per byte group. |
| 25, 48 | nOE | Active-low output enable: Asserted low enables transceiver; high forces all I/O into high-impedance state. |
| 2–9, 11–14, 16–17, 19–20, 22–23 | nB0–nB7 (Group 1), nB0–nB7 (Group 2) | B-side bidirectional data terminals: Connect to peripheral bus or memory subsystem. |
| 47–46, 44–43, 41–40, 38–37, 36–35, 33–32, 30–29, 27–26 | nA0–nA7 (Group 1), nA0–nA7 (Group 2) | A-side bidirectional data terminals: Interface with processor/FPGA local bus. |
| 4, 10, 15, 21, 28, 34, 39, 45 | GND | Eight dedicated ground pins: Reduce ground bounce and improve noise immunity in high-speed switching. |
| 7, 18, 31, 42 | VCC | Four distributed power pins: Minimize IR drop and stabilize supply under transient load conditions. |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant I/O | Withstands 5.5V input voltage while operating at 2.5V/3.3V VCC-enables direct connection to 5V legacy peripherals without level shifters. |
| Bus-hold circuitry | Eliminates need for external pull-up/pull-down resistors on unused or unterminated data lines-reduces BOM count and PCB area. |
| Live insertion/extraction | Supports hot-swap capability in modular backplane systems due to power-up 3-state and robust ESD/latch-up protection. |
| No bus current loading | Outputs draw zero current when tied to 5V bus in high-impedance state-prevents unintended loading of shared backplane lines. |
| Latch-up immunity | Exceeds 500mA per JEDEC Std 17-ensures reliability in noisy industrial environments with ground potential shifts. |
Applications
| Memory Expansion Interface | FPGA I/O Bridging |
|---|---|
|
Use Scenario: Extending address/data bus between microcontroller and external SRAM/Flash. IC Role / Device Role / Timing Role: Bidirectional transceiver buffering and voltage-level translation between 3.3V MCU and 5V memory devices. Use Value: Eliminates discrete level shifters; bus-hold prevents floating states during memory access arbitration. |
Use Scenario: Interfacing FPGA I/O banks operating at 2.5V with external 3.3V peripherals (ADCs, DACs, sensors). IC Role / Device Role / Timing Role: Direction-controlled data conduit with sub-2ns propagation delay preserving setup/hold timing margins. Use Value: Enables deterministic timing closure without adding interposer logic or delaying clock paths. |
| Backplane Data Routing | Industrial PLC I/O Module |
|
Use Scenario: Hot-swappable module connecting CPU card to peripheral cards via shared 16-bit parallel backplane. IC Role / Device Role / Timing Role: Isolates modules electrically; 3-state control enables dynamic bus ownership handoff. Use Value: Live insertion support avoids system downtime; latch-up immunity withstands field-induced ground faults. |
Use Scenario: Signal conditioning and isolation between 24V field I/O and 3.3V controller logic in programmable logic controllers. IC Role / Device Role / Timing Role: Level-translating interface between optocoupler-isolated inputs and microcontroller GPIO. Use Value: 5V-tolerant inputs accept buffered 24V signals; low ICCZ reduces thermal load in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVC16245DGGR | TI ALVC family: 1.65–3.6V VCC range; lower drive (–24mA/24mA); no bus-hold; 48-pin TSSOP. | Requires external pull-ups on unused lines; suited for cost-sensitive, low-power embedded designs with tighter VCC margins. | Select when bus-hold is unnecessary and supply voltage may dip below 2.3V. |
| 74LVT16245ADGG,118 | NXP LVT variant: Same pinout; identical 2.5V/3.3V operation but lacks 5V I/O tolerance (max VI = VCC + 0.5V). | Not suitable for direct 5V peripheral interfacing; requires external clamping or level-shifting circuits. | Select only in fully 3.3V-only systems where 5V tolerance is irrelevant. |
Compared with SN74ALVC16245DGGR and 74LVT16245ADGG,118, the 74ALVT16245DGG,518 uniquely combines 5V I/O tolerance, bus-hold, and ±64mA drive-making it optimal for mixed-voltage backplanes and legacy peripheral integration where robustness and design simplicity are prioritized over minimal quiescent current.
Availability
74ALVT16245DGG,518 is available at Aetrix Electronics and suitable for memory expansion interfaces, FPGA I/O bridging, backplane data routing, and industrial PLC I/O modules requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for 74ALVT16245DGG,518 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
Philips Semiconductors (now NXP Semiconductors) is a global semiconductor leader founded in the Netherlands, specializing in high-reliability logic, analog, and interface solutions for industrial and communications infrastructure.
The 74ALVT16245DGG,518 belongs to Philips' ALVT (Advanced Low-Voltage Technology) logic family, engineered for high-speed, low-noise bidirectional bus interfacing in mixed-voltage systems where signal integrity and robustness outweigh ultra-low power requirements.
FAQ
What voltage levels does the 74ALVT16245DGG,518 support for VCC and I/O?
The 74ALVT16245DGG,518 operates with VCC at either 2.5V (2.3–2.7V) or 3.3V (3.0–3.6V) and supports 5V-tolerant I/O-inputs and outputs withstand up to 5.5V regardless of VCC setting. This allows direct interfacing with 5V peripherals while powered from modern low-voltage rails, eliminating external level-shifting components in the 74ALVT16245DGG,518 signal path.
Does the 74ALVT16245DGG,518 require external pull-up resistors on unused inputs?
No. The 74ALVT16245DGG,518 integrates bus-hold circuitry on all A- and B-side data pins, providing ±75µA to ±140µA overdrive current to maintain valid logic states on floating inputs. This eliminates the need for external pull-up or pull-down resistors, reducing bill-of-materials cost and PCB real estate-confirmed in the Functional Description and DC Electrical Characteristics sections of the 74ALVT16245DGG,518 datasheet.
What is the maximum propagation delay for the 74ALVT16245DGG,518 at 3.3V operation?
At VCC = 3.3V ±0.3V and CL = 50pF, the 74ALVT16245DGG,518 has a maximum propagation delay (tPLH/tPHL) of 2.4ns, with typical values of 1.5ns. This specification applies across the full operating temperature range (–40°C to +85°C) and ensures timing compliance in high-speed parallel bus applications such as memory expansion and FPGA bridging using the 74ALVT16245DGG,518.
How does the 74ALVT16245DGG,518 handle power-up sequencing?
The 74ALVT16245DGG,518 features power-up 3-state behavior: outputs remain in high-impedance until VCC reaches a valid operating level (~1.2V), preventing bus contention during power ramp-up. This is verified in the DC Electrical Characteristics table under "IPU/PD" parameter and confirmed in the Functional Description section-ensuring glitch-free initialization without external reset coordination for the 74ALVT16245DGG,518.
Is the 74ALVT16245DGG,518 compatible with live insertion in backplane systems?
Yes. The 74ALVT16245DGG,518 supports live insertion/extraction due to its power-up 3-state behavior, 500mA latch-up immunity (JEDEC Std 17), and 2000V HBM ESD rating. These features prevent damage or system disruption during hot-swap events in modular backplane architectures-explicitly stated in the Features list and Absolute Maximum Ratings section of the 74ALVT16245DGG,518 product specification.
74ALVT16245DGG,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ALVT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 2.3V ~ 2.7V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74ALVT16245DGG,518 FAQ
1.How can I place an order for 74ALVT16245DGG,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVT16245DGG,518 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 74ALVT16245DGG,518 reliable?
The price and inventory of 74ALVT16245DGG,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVT16245DGG,518 is usually 5 days.
3.What payment methods are accepted for 74ALVT16245DGG,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVT16245DGG,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVT16245DGG,518?
74ALVT16245DGG,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVT16245DGG,518 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 74ALVT16245DGG,518?
For technical support, including 74ALVT16245DGG,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVT16245DGG,518 requirements.
6.How does Aetrix verify that 74ALVT16245DGG,518 is sourced from the original manufacturer or authorized distributors?
All 74ALVT16245DGG,518 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 74ALVT16245DGG,518 meets industry standards.
7.What is the process for return or replacement of 74ALVT16245DGG,518?
All 74ALVT16245DGG,518 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVT16245DGG,518, 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 74ALVT16245DGG,518 part is unused and in its original packaging.
Return procedure for 74ALVT16245DGG,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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