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NXP Semiconductors 74LVCH16244AEV,518
- Part No.:
- 74LVCH16244AEV,518
- Manufacturer:
- NXP Semiconductors
- Package:
- 56-VFBGA
- Datasheet:
-
74LVCH16244AEV,518.pdf
- Description:
- IC BUFF NON-INVERT 3.6V 56VFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:14,000
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Product details
Overview
74LVCH16244AEV,518 from Nexperia is a 16-bit CMOS buffer/line driver with 3-state outputs, four independent output enables (1OE–4OE), 5 V tolerant I/O, and integrated bus hold on all data inputs. It operates from 1.2 V to 3.6 V supply, supports mixed-voltage translation between 3.3 V and 5 V logic domains, and features IOFF circuitry for partial power-down protection. It is used in industrial backplane interface, memory address buffering, and FPGA I/O expansion systems.
For engineers reviewing the 74LVCH16244AEV,518 datasheet, 74LVCH16244AEV,518 pinout, 74LVCH16244AEV,518 application, or 74LVCH16244AEV,518 equivalent, key selection criteria include 5 V input tolerance, bus hold functionality eliminating external pull-ups, IOFF-enabled safe power sequencing, Schmitt-trigger inputs for noise immunity, and TSSOP48 package compatibility with high-density PCB layouts.
Technical Context
This device implements a multibyte flow-through architecture with four independent 4-bit buffer sections, each controlled by its own active-low output enable (1OE–4OE). Each section buffers four data inputs (nA0–nA3) to four 3-state outputs (nY0–nY3), with Schmitt-trigger inputs enabling robust operation with slow-rising signals.
The IOFF circuit actively disables outputs when VCC = 0 V, preventing backflow current during hot-insertion or partial power-down. Bus hold on all data inputs maintains valid logic states without external resistors-exclusive to the LVCH variant-and complies with JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36 across its voltage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.2 V to 3.6 V - Enables direct interfacing with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic families. |
| I/O Voltage Tolerance | Up to 5.5 V - Allows safe connection to legacy 5 V buses without level shifters. |
| Propagation Delay | 1.1 ns (typ) at VCC = 3.3 V - Supports high-speed data routing in timing-critical interfaces. |
| Bus Hold Current | ±75 μA at VCC = 3.0 V - Actively sustains input logic state without external biasing components. |
| IOFF Leakage | ±10 μA max at VCC = 0 V - Prevents damaging back-current during system power sequencing. |
| Operating Temperature | −40 °C to +125 °C - Qualified for extended industrial and automotive under-hood environments. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Robust handling during board assembly and field service. |
Pinout & Package
TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm lead pitch. Pin 1 index marked; low-inductance multiple VCC/GND pins minimize ground bounce.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE (Pins 1, 48, 25, 24) | Active-low output enable control | Each enables/disables one 4-bit output group independently - enables flexible bus segmentation. |
| 1A0–1A3, 2A0–2A3, 3A0–3A3, 4A0–4A3 (Pins 47,46,44,43 / 41,40,38,37 / 36,35,33,32 / 30,29,27,26) | Data inputs with bus hold | All 16 inputs retain last valid logic state without external pull-up/down - reduces BOM count and layout area. |
| 1Y0–1Y3, 2Y0–2Y3, 3Y0–3Y3, 4Y0–4Y3 (Pins 2,3,5,6 / 8,9,11,12 / 13,14,16,17 / 19,20,22,23) | 3-state buffered outputs | Drive loads up to ±24 mA; high-impedance OFF-state isolates bus segments during contention or idle periods. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins reduce IR drop and improve noise immunity in high-speed switching. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths - critical for signal integrity in 16-bit parallel interfaces. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant I/O | Enables direct interconnection with 5 V microcontrollers, EEPROMs, and legacy peripherals without external level translators. |
| Integrated bus hold | Eliminates need for 16 external pull-up resistors - saves PCB space, reduces assembly cost, and improves reliability. |
| IOFF partial power-down | Prevents destructive back-current when VCC is off but I/O lines remain live - essential for hot-swap and modular systems. |
| Schmitt-trigger inputs | Accepts slow-rising/falling waveforms (e.g., from mechanical switches or long traces) without oscillation or metastability. |
| Low dynamic power | CPD = 11.4 pF at VCC = 3.3 V - minimizes switching power in high-frequency data paths while maintaining speed. |
Applications
| Industrial Backplane Interface | FPGA I/O Expansion |
|---|---|
Use Scenario: Buffering address/data lines between a main controller and multiple peripheral modules on a shared backplane. IC Role / Device Role / Timing Role: 16-bit unidirectional line driver providing level translation and bus isolation between 3.3 V FPGA and 5 V sensor nodes. Use Value: 5 V tolerance allows direct connection to legacy 5 V peripherals; IOFF prevents backfeed during module hot-swap. |
Use Scenario: Extending limited FPGA I/O banks to drive external memory, displays, or communication interfaces. IC Role / Device Role / Timing Role: Output buffer adding drive strength and voltage-level flexibility to FPGA GPIOs operating at 1.2 V–3.3 V. Use Value: Bus hold maintains stable output states during FPGA configuration; Schmitt inputs tolerate noisy board-level signals. |
| Memory Address Latching | Automotive Body Control Module |
Use Scenario: Driving address lines to multiple SRAM or flash devices sharing a common data bus. IC Role / Device Role / Timing Role: 16-bit address buffer with per-group enable control to select individual memory banks. Use Value: Four independent OE pins allow time-multiplexed access to different memory regions without bus contention. |
Use Scenario: Interfacing a 3.3 V microcontroller to 5 V CAN transceivers, LIN drivers, and analog sensors in cabin electronics. IC Role / Device Role / Timing Role: Voltage-tolerant buffer isolating MCU I/O from higher-voltage subsystems while supporting wide temperature operation. Use Value: −40 °C to +125 °C rating ensures reliability in under-dash environments; ESD robustness withstands vehicle EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC16244ADGG | No bus hold; identical pinout, voltage range, and 5 V tolerance. | Requires external pull-up resistors on unused inputs - increases BOM and layout complexity. | Select when bus hold is unnecessary and cost minimization is prioritized over design simplicity. |
| SN74LVC16244ADGGR | Texas Instruments variant; same electrical specs but different thermal resistance and qualification testing. | Approved for TI-specific automotive programs; not qualified to Nexperia's AEC-Q100 Grade 1 profile. | Choose only if aligned with TI-based design ecosystems or existing TI-qualified BOMs. |
Compared with 74LVC16244ADGG, the 74LVCH16244AEV,518 adds bus hold to simplify input biasing, while versus SN74LVC16244ADGGR it offers tighter industrial temperature validation and Nexperia's proven supply chain continuity for long-lifecycle embedded programs.
Availability
74LVCH16244AEV,518 is available at Aetrix Electronics and suitable for industrial backplane interface, FPGA I/O expansion, and memory address latching requiring stable component supply across multi-year production cycles.
Supply support for 74LVCH16244AEV,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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, analog, and MOSFET solutions for industrial, automotive, and consumer markets.
The 74LVCH16244AEV,518 belongs to Nexperia's advanced LVC/LVCH logic family, designed specifically for mixed-voltage system interfacing with emphasis on robustness, low power, and long-term supply stability in embedded applications.
FAQ
Does 74LVCH16244AEV,518 support hot-plug operation?
Yes. Its IOFF circuitry actively disables outputs and limits leakage to ±10 μA when VCC = 0 V, preventing back-current flow from live I/O lines into a powered-down device - a core requirement for hot-swap backplane and modular system designs.
What is the function of bus hold, and how does it differ from standard weak pull-up?
Bus hold uses feedback transistors to actively maintain the last-valid logic state at each data input, drawing ±75 μA at VCC = 3.0 V. Unlike passive pull-ups, it provides stronger, voltage-independent retention and eliminates resistor placement, value selection, and parasitic loading concerns.
Can this device translate between 1.8 V and 5 V logic levels bidirectionally?
No. It is a unidirectional buffer: inputs accept 0–5.5 V regardless of VCC, but outputs swing only between GND and VCC (1.2–3.6 V). For true bidirectional level translation, a dedicated dual-supply translator such as TXB0108 is required.
Is the TSSOP48 package RoHS-compliant and lead-free?
Yes. The 74LVCH16244AEV,518 in SOT362-1 (TSSOP48) meets RoHS Directive 2011/65/EU and is manufactured with 100 % matte tin lead finish and lead-free solder reflow profiles compliant with JEDEC J-STD-020.
74LVCH16244AEV,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVCH
- Package/Case:
- 56-VFBGA
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-VFBGA (4.5x7)
74LVCH16244AEV,518 FAQ
1.How can I place an order for 74LVCH16244AEV,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH16244AEV,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 74LVCH16244AEV,518 reliable?
The price and inventory of 74LVCH16244AEV,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH16244AEV,518 is usually 5 days.
3.What payment methods are accepted for 74LVCH16244AEV,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH16244AEV,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH16244AEV,518?
74LVCH16244AEV,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH16244AEV,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 74LVCH16244AEV,518?
For technical support, including 74LVCH16244AEV,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH16244AEV,518 requirements.
6.How does Aetrix verify that 74LVCH16244AEV,518 is sourced from the original manufacturer or authorized distributors?
All 74LVCH16244AEV,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 74LVCH16244AEV,518 meets industry standards.
7.What is the process for return or replacement of 74LVCH16244AEV,518?
All 74LVCH16244AEV,518 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH16244AEV,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 74LVCH16244AEV,518 part is unused and in its original packaging.
Return procedure for 74LVCH16244AEV,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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