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NXP Semiconductors 74ALVT16652DL,518
- Part No.:
- 74ALVT16652DL,518
- Manufacturer:
- NXP Semiconductors
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ALVT16652DL,518.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,414
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Product details
Overview
74ALVT16652DL,518 from Philips Semiconductors is a 2.5V/3.3V 16-bit bus transceiver/register with 3-state outputs, dual 8-bit or single 16-bit configurable operation, 5V I/O tolerance, and integrated bus-hold inputs. It supports real-time and registered data transfer between A- and B-buses in industrial control backplanes and memory expansion interfaces.
For engineers reviewing the 74ALVT16652DL,518 datasheet, 74ALVT16652DL,518 pinout, 74ALVT16652DL,518 application, or 74ALVT16652DL,518 equivalent, key selection criteria include VCC compatibility (2.3–2.7V or 3.0–3.6V), ±64mA/±32mA output drive, 56-pin SSOP package, bus-hold functionality eliminating external pull-ups, and simultaneous clocking support for A/B register storage.
Technical Context
The 74ALVT16652DL,518 implements two independent 8-bit transceiver/register blocks, each with dedicated clock (CPAB/CPBA), select (SAB/SBA), and output-enable (OEAB/OEBA) controls. Its BiCMOS architecture enables 2.5V/3.3V core logic while maintaining 5V-tolerant I/O pins and TTL-compatible switching thresholds.
Real-time transfer occurs when SAB/SBA are low; stored-data transfer activates when both are high. Clock-triggered latching operates independently of OE state, and bus-hold circuitry maintains valid logic levels on unused inputs without external components - critical for hot-swap and partial-bus isolation applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3–2.7V or 3.0–3.6V: Enables dual-voltage system integration without level shifters. |
| I/O Voltage Tolerance | 0–5.5V input, –0.5–7.0V output: Supports direct interfacing to legacy 5V buses without damage. |
| Output Drive | +64mA / –32mA sink/source: Drives heavy capacitive loads and multiple TTL inputs reliably. |
| Propagation Delay | 1.5–3.6ns (A↔B path @ 3.3V): Meets sub-4ns timing budgets for high-speed backplane data routing. |
| Bus-Hold Current | ±75–140µA @ 3V: Actively retains last valid logic state on floating inputs, removing need for pull-up resistors. |
| Max Clock Frequency | 300MHz @ 3.3V: Supports synchronous register loading in high-throughput memory-mapped peripherals. |
| Quiescent Supply Current | 70µA @ 3.3V (outputs disabled): Minimizes standby power in always-on bus management subsystems. |
Pinout & Package
74ALVT16652DL,518 is housed in a 56-pin plastic shrink small outline package (SSOP), body width 7.5 mm, per SOT371-1. Pin pitch is 0.5 mm; lead finish is matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 56, 28, 29 | 1OEAB, 1OEBA, 2OEAB, 2OEBA | Active-low output enables controlling direction and 3-state status per transceiver block. |
| 2, 55, 27, 30 | 1CPAB, 1CPBA, 2CPAB, 2CPBA | Rising-edge clock inputs triggering register latch events independent of OE state. |
| 3, 54, 26, 31 | 1SAB, 1SBA, 2SAB, 2SBA | Select inputs determining real-time (L) vs. stored-data (H) transfer mode per channel. |
| 5–14, 15–24, 42–52, 33–41 | A0–A7 (x2), B0–B7 (x2) | Bidirectional I/O pins grouped as two 8-bit A-side and two 8-bit B-side buses. |
| 4, 11, 18, 25, 32, 39, 46, 53 | GND | Eight ground connections distributed across package for low-inductance return paths. |
| 7, 22, 35, 50 | VCC | Four VCC pins enable stable core voltage distribution and reduce supply noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| 5V I/O compatible inputs/outputs | Operates safely with 5V signals while powered from 2.5V/3.3V rails - eliminates external level translators. |
| Integrated bus-hold circuitry | Retains last valid logic state on unconnected A/B bus pins, removing external pull-up resistors and saving PCB area. |
| Live insertion/extraction support | Power-up 3-state and glitch-free select control allow safe hot-plug operation in modular backplane systems. |
| Dual independent register banks | Each 8-bit block has dedicated CP/S/OE controls, enabling asynchronous storage and transfer between A and B buses. |
| Latch-up immunity & ESD protection | Exceeds 500mA latch-up current (JEDEC JC40.2) and 2000V HBM ESD - ensures robustness in industrial environments. |
Applications
| Industrial Backplane Interface | Memory Expansion Subsystem |
|---|---|
|
Use Scenario: Isolating and synchronizing data flow between CPU module and peripheral carrier board in modular PLC chassis. IC Role / Device Role / Timing Role: Bidirectional bus transceiver/register managing address/data strobes with clocked storage for pipeline alignment. Use Value: Real-time + registered modes enable both immediate forwarding and synchronized handshaking with downstream memory controllers. |
Use Scenario: Extending 16-bit data bus between main controller and SRAM/Flash daughter card in embedded instrumentation. IC Role / Device Role / Timing Role: Level-shifting transceiver with bus-hold ensuring signal integrity during card insertion/removal and idle states. Use Value: 5V-tolerant I/O and live-insertion capability eliminate bus glitches during field-replaceable module swaps. |
| High-Density I/O Expansion | Legacy System Interfacing |
|
Use Scenario: Adding parallel I/O ports to FPGA-based motion controller via local bus extension. IC Role / Device Role / Timing Role: Registered transceiver buffering FPGA GPIOs to off-board opto-isolated drivers and encoders. Use Value: ±64mA drive strength directly drives opto-LEDs; bus-hold prevents floating inputs during configuration transitions. |
Use Scenario: Bridging modern 3.3V microcontroller to legacy 5V ISA bus peripherals in test equipment retrofit. IC Role / Device Role / Timing Role: Voltage-tolerant bidirectional interface preserving timing margins across mixed-voltage domains. Use Value: TTL-compatible thresholds and 5V I/O tolerance enable drop-in replacement of obsolete 74-series transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver/register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVTH16652DGGR | TI part; same 56-pin TSSOP package, identical 2.5V/3.3V operation and 5V I/O tolerance, but lacks bus-hold inputs. | Requires external pull-up resistors on unused inputs; suitable where board space permits discrete biasing. | Choose when bus-hold is unnecessary and TI supply chain preference applies. |
| 74LVT16652MTD | ON Semiconductor variant; same pinout and function, but rated only for 3.3V VCC (no 2.5V support) and lower max fCLK (200MHz). | Not suitable for dual-voltage designs; limited to 3.3V-only systems with relaxed timing requirements. | Choose only for cost-sensitive 3.3V-only applications where 2.5V operation and 300MHz clock are not required. |
Compared with SN74ALVTH16652DGGR and 74LVT16652MTD, the 74ALVT16652DL,518 uniquely delivers integrated bus-hold, 2.5V operation, and 300MHz clock capability in a single SSOP device - making it optimal for space-constrained, multi-voltage, hot-pluggable systems.
Availability
74ALVT16652DL,518 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion subsystems, and high-density I/O expansion requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for 74ALVT16652DL,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 leader in high-performance logic ICs, known for robust BiCMOS process technology and industrial-grade reliability.
The 74ALVT16652DL,518 belongs to the ALVT advanced low-voltage logic family, designed specifically for mixed-voltage bus bridging in telecom infrastructure, industrial automation, and test equipment where signal integrity, hot-swap safety, and long-term supply stability are critical.
FAQ
What voltage levels does the 74ALVT16652DL,518 support for VCC and I/O?
The 74ALVT16652DL,518 operates with VCC at either 2.5V (2.3–2.7V range) or 3.3V (3.0–3.6V range). Its I/O pins tolerate input voltages up to 5.5V and output voltages up to 7.0V, enabling safe interfacing with 5V legacy systems without level shifters. This dual-voltage flexibility is confirmed in the Recommended Operating Conditions table on page 6 of the Philips datasheet.
Does the 74ALVT16652DL,518 include bus-hold functionality, and how does it affect design?
Yes, the 74ALVT16652DL,518 integrates bus-hold circuitry on all A- and B-side data inputs, providing ±75–140µA overdrive current to retain the last valid logic state. This eliminates the need for external pull-up resistors on unused or unterminated bus lines, reducing BOM count, PCB area, and potential signal integrity issues - especially valuable in modular or hot-pluggable systems where bus stubs may be temporarily disconnected.
How many independent transceiver/register blocks does the 74ALVT16652DL,518 contain?
The 74ALVT16652DL,518 contains two fully independent 8-bit transceiver/register blocks (labeled "1" and "2"), each with dedicated clock (CPAB/CPBA), select (SAB/SBA), and output-enable (OEAB/OEBA) controls. This allows simultaneous but asynchronous operation - for example, storing data on one bus while transferring real-time data on the other - as detailed in the Function Table and Logic Diagram on pages 4–5 of the datasheet.
What is the maximum clock frequency supported by the 74ALVT16652DL,518, and under what conditions?
The 74ALVT16652DL,518 supports a maximum clock frequency of 300MHz when operating at VCC = 3.3V ± 0.3V, Tamb = –40°C to +85°C, and CL = 50pF, as specified in the AC Characteristics table on page 8. At 2.5V operation, the maximum clock frequency is 200MHz. These values reflect guaranteed performance across the full industrial temperature range, not just typical conditions.
Is the 74ALVT16652DL,518 suitable for live insertion and extraction in backplane systems?
Yes, the 74ALVT16652DL,518 supports live insertion/extraction due to its power-up 3-state behavior, glitch-free select control during mode transitions, and robust ESD/latch-up protection (2000V HBM, >500mA latch-up immunity). These features ensure no bus contention or signal corruption during hot-plug events - a requirement explicitly stated in the FEATURES section on page 2 of the Philips datasheet.
74ALVT16652DL,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ALVT
- Package/Case:
- 56-BSSOP (0.295", 7.50mm 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:
- 56-SSOP
74ALVT16652DL,518 FAQ
1.How can I place an order for 74ALVT16652DL,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVT16652DL,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 74ALVT16652DL,518 reliable?
The price and inventory of 74ALVT16652DL,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVT16652DL,518 is usually 5 days.
3.What payment methods are accepted for 74ALVT16652DL,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVT16652DL,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVT16652DL,518?
74ALVT16652DL,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVT16652DL,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 74ALVT16652DL,518?
For technical support, including 74ALVT16652DL,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVT16652DL,518 requirements.
6.How does Aetrix verify that 74ALVT16652DL,518 is sourced from the original manufacturer or authorized distributors?
All 74ALVT16652DL,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 74ALVT16652DL,518 meets industry standards.
7.What is the process for return or replacement of 74ALVT16652DL,518?
All 74ALVT16652DL,518 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVT16652DL,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 74ALVT16652DL,518 part is unused and in its original packaging.
Return procedure for 74ALVT16652DL,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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