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Nexperia USA Inc. 74LVCH16244ADGG,51
- Part No.:
- 74LVCH16244ADGG,51
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74LVCH16244ADGG,51.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,846
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Product details
Overview
74LVCH16244ADGG,51 from Nexperia is a 16-bit CMOS buffer/line driver with 3-state outputs, four independent output-enable inputs (1OE–4OE), 5 V tolerant I/O, bus hold on all data inputs, and IOFF partial power-down protection. It operates from 1.2 V to 3.6 V supply and supports mixed-voltage interfacing between 3.3 V and 5 V systems in industrial control backplanes and memory address/data buffering.
For engineers reviewing the 74LVCH16244ADGG,51 datasheet, 74LVCH16244ADGG,51 pinout, 74LVCH16244ADGG,51 application, or 74LVCH16244ADGG,51 equivalent, this device delivers deterministic 3-state timing, Schmitt-trigger input noise immunity, and guaranteed high-impedance shutdown at VCC = 0 V - critical for hot-swap and power-gated subsystems.
Technical Context
This device implements four independent 4-bit non-inverting buffers, each controlled by a dedicated active-low output enable (1OE–4OE). Each buffer section features Schmitt-trigger inputs for robust handling of slow-rising signals and bus-hold circuitry on all 16 data inputs (A0–A3 per group), eliminating external pull-ups.
The IOFF functionality disables outputs and blocks backflow current when VCC = 0 V, enabling safe partial power-down in multi-rail systems. Input tolerance up to 5.5 V and output drive capability across 1.2 V–3.6 V supplies allow seamless level translation without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 1.2 V to 3.6 V - enables operation in ultra-low-power and standard 3.3 V systems |
| I/O voltage tolerance | Up to 5.5 V - allows direct connection to legacy 5 V logic without level shifters |
| Propagation delay (VCC = 3.3 V) | Typ. 2.2 ns - supports high-speed address/data buffering in ≤200 MHz bus applications |
| IOFF leakage (VCC = 0 V) | ±10 μA max - prevents damaging backflow current during power sequencing |
| Bus hold current (VI = 0.8 V) | 75 μA min - actively maintains valid logic state on unused inputs |
| ESD rating (HBM) | >2000 V - meets JEDEC JS-001 Class 2 for board-level handling robustness |
| Operating temperature | −40 °C to +125 °C - qualified for extended industrial and under-hood environments |
Pinout & Package
TSSOP48 package (SOT362-1), 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm lead pitch. Pin 1 index marked; thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24, 25, 48 | 1OE, 2OE, 3OE, 4OE | Active-low enable controls for four independent 4-bit buffer groups |
| 2–3, 5–6, 8–9, 11–12, 13–14, 16–17, 19–20, 22–23 | 1Y0–1Y3, 2Y0–2Y3, 3Y0–3Y3, 4Y0–4Y3 | 16 buffered 3-state outputs; high-impedance when corresponding OE is HIGH |
| 4, 10, 15, 21, 28, 34, 39, 45 | GND | Eight ground connections minimize ground bounce and improve noise immunity |
| 7, 18, 31, 42 | VCC | Four supply pins reduce IR drop and support high-current switching stability |
| 26–27, 29–30, 32–33, 35–36, 37–38, 40–41, 43–44, 46–47 | 4A0–4A3, 3A0–3A3, 2A0–2A3, 1A0–1A3 | 16 Schmitt-trigger inputs with integrated bus hold; tolerate slow edges and float safely |
Key Features
| Feature | Design Value |
|---|---|
| Bus hold on all data inputs | Eliminates need for 16 external pull-up resistors, reducing BOM count and PCB area |
| IOFF partial power-down | Guarantees high-impedance outputs and blocks reverse current when VCC = 0 V |
| Schmitt-trigger inputs | Supports clean logic transitions even with rise/fall times up to 20 ns/V at 1.2 V |
| 5 V tolerant I/O | Enables direct interface with 5 V microcontrollers, FPGAs, and legacy peripherals |
| Low dynamic power dissipation | CPD = 11.4 pF at 3.3 V - reduces switching power in high-frequency data paths |
Applications
| Industrial Backplane Buffering | Memory Address/Data Latching |
|---|---|
Use Scenario: Isolating and driving address/data lines across modular PLC I/O racks with mixed 3.3 V and 5 V modules. IC Role / Device Role / Timing Role: Non-inverting 16-bit buffer with per-group 3-state control synchronizes signal propagation across distributed backplane segments. Use Value: Four independent OE pins enable selective activation of rack-specific address lanes, minimizing bus contention and skew. |
Use Scenario: Driving SRAM or Flash memory address and data buses in embedded controllers where VCC may be sequenced independently. IC Role / Device Role / Timing Role: Level-translating buffer ensures valid logic levels despite mismatched supply rails between MCU and memory. Use Value: 5 V tolerant inputs accept TTL-compatible signals; IOFF prevents backfeed when memory rail powers down first. |
| Hot-Swappable Module Interface | Legacy Peripheral Adapter |
Use Scenario: Interfacing field-replaceable sensor modules that may be inserted or removed while system remains powered. IC Role / Device Role / Timing Role: 3-state buffer isolates module signals until fully seated and powered; bus hold maintains known state pre-initialization. Use Value: Bus hold eliminates floating inputs during insertion; IOFF protects host side if module VCC drops unexpectedly. |
Use Scenario: Adapting older 5 V parallel peripherals (e.g., printers, displays) to modern 3.3 V SoCs in industrial HMIs. IC Role / Device Role / Timing Role: Bidirectional voltage translator with no external biasing, leveraging native 5 V tolerance and Schmitt noise rejection. Use Value: Eliminates discrete level-shifter ICs and associated passives; Schmitt inputs reject EMI on long cable runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC16244ADGG | No bus hold circuit; requires external pull-ups on unused inputs | Lacks input state retention; unsuitable for unpopulated or dynamically reconfigured interfaces | Select only if cost sensitivity outweighs design simplicity and floating-input risk |
| SN74ALVC16244DGGR | TI part; identical pinout and function but different IOFF behavior (not specified at VCC = 0 V) | Not qualified for full IOFF compliance per JEDEC JESD78; limited partial power-down assurance | Prefer only in TI-design ecosystems with verified power sequencing control |
Compared with 74LVC16244ADGG, the 74LVCH16244ADGG adds bus hold for plug-and-play reliability, while SN74ALVC16244DGGR offers alternate sourcing but lacks documented IOFF validation - making the Nexperia part optimal for unattended or hot-swap-critical deployments.
Availability
74LVCH16244ADGG,51 is available at Aetrix Electronics and suitable for industrial backplane buffering, memory address/data latching, and hot-swappable module interface requiring stable component supply across extended temperature and mixed-voltage conditions.
Supply support for 74LVCH16244ADGG,51 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 automotive, industrial, and consumer markets.
The 74LVCH16244A belongs to Nexperia's advanced LVC/LVCH logic family, engineered specifically for robust mixed-voltage interfacing, low-power operation, and fail-safe power sequencing in mission-critical industrial systems.
FAQ
Does 74LVCH16244ADGG,51 support true bidirectional data flow?
No. This is a unidirectional non-inverting buffer: data flows strictly from A-inputs to Y-outputs. Directionality is fixed; it does not implement bus transceivers or auto-direction sensing. For bidirectional applications, separate transmit/receive buffers or dedicated transceiver ICs are required.
Can all four output-enable inputs be tied together?
Yes - 1OE through 4OE may be paralleled to operate the entire 16-bit buffer as a single unit. Doing so reduces control complexity but eliminates independent lane gating. Ensure combined fan-out and trace loading remain within drive capability limits of the controlling signal source.
What is the maximum capacitive load this device can drive reliably?
Per Nexperia's characterization, the device maintains specified timing (tpd ≤ 5.5 ns) and output voltage (VOH ≥ 2.0 V, VOL ≤ 0.8 V) into 50 pF loads at 3.3 V. For heavier loads (>75 pF), propagation delay increases and edge rates degrade - verify timing margins in final layout with actual trace and receiver capacitance.
How does bus hold behave when an input is driven to 5 V while VCC = 3.3 V?
The bus hold circuit automatically disables when VI exceeds VCC, allowing safe 5 V input operation without conflict. Bus hold only activates when VI is within the valid logic range (e.g., <0.8 V for LOW, >2.0 V for HIGH at 3.3 V), ensuring compatibility with 5 V-tolerant signaling.
74LVCH16244ADGG,51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVCH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- 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:
- 48-TSSOP
74LVCH16244ADGG,51 FAQ
1.How can I place an order for 74LVCH16244ADGG,51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH16244ADGG,51 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 74LVCH16244ADGG,51 reliable?
The price and inventory of 74LVCH16244ADGG,51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH16244ADGG,51 is usually 5 days.
3.What payment methods are accepted for 74LVCH16244ADGG,51?
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4.How is shipping managed for 74LVCH16244ADGG,51?
74LVCH16244ADGG,51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH16244ADGG,51 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 74LVCH16244ADGG,51?
For technical support, including 74LVCH16244ADGG,51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH16244ADGG,51 requirements.
6.How does Aetrix verify that 74LVCH16244ADGG,51 is sourced from the original manufacturer or authorized distributors?
All 74LVCH16244ADGG,51 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 74LVCH16244ADGG,51 meets industry standards.
7.What is the process for return or replacement of 74LVCH16244ADGG,51?
All 74LVCH16244ADGG,51 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH16244ADGG,51, 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 74LVCH16244ADGG,51 part is unused and in its original packaging.
Return procedure for 74LVCH16244ADGG,51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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