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NXP Semiconductors 74LVCH16244ADL,112
- Part No.:
- 74LVCH16244ADL,112
- Manufacturer:
- NXP Semiconductors
- Package:
- -
- Datasheet:
-
74LVCH16244ADL,112.pdf
- Description:
- IC BUFF DVR TRI-ST 16BIT 48SSOP
- Quantity:
- Payment:
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Inventory:6,572
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Product details
Overview
74LVCH16244ADL,112 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, 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 bus buffering.
For engineers reviewing the 74LVCH16244ADL,112 datasheet, 74LVCH16244ADL,112 pinout, 74LVCH16244ADL,112 application, or 74LVCH16244ADL,112 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
The 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.
IOFF circuitry actively disables outputs during power-down, blocking backflow current when VCC = 0 V. The 48-pin TSSOP package (SOT362-1) provides low-inductance multiple VCC/GND pins to suppress ground bounce and switching noise in high-speed digital buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - enables direct interface with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic domains |
| I/O Voltage Tolerance | 5 V tolerant inputs/outputs - allows safe connection to legacy 5 V peripherals without level shifters |
| Propagation Delay (VCC = 3.3 V) | Max 4.1 ns (A→Y) - supports >100 MHz bus operation with tight timing margins |
| Enable/Disable Time (VCC = 3.3 V) | Max 4.6 ns enable, 6.5 ns disable - ensures clean 3-state transitions in time-multiplexed bus sharing |
| Bus Hold Current (VI = 0.8 V) | 75 μA LOW, −75 μA HIGH (VCC = 3.0 V) - maintains stable logic state on floating inputs without external resistors |
| IOFF Leakage (VCC = 0 V) | ±20 μA max - prevents damaging back-current during partial power-down sequences |
| Operating Temperature | −40 °C to +125 °C - qualified for extended industrial and under-hood embedded applications |
Pinout & Package
74LVCH16244ADL,112 is packaged in a 48-pin TSSOP (SOT362-1) with 6.1 mm body width, 0.5 mm lead pitch, and exposed thermal pad not connected internally. Pin numbering follows standard dual-row counterclockwise layout starting from pin 1 (1Y0) at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 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) | Data outputs (grouped 4-bit sets) | Non-inverting buffered outputs; each set independently controlled by corresponding OE |
| 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 (grouped 4-bit sets) | All feature integrated bus hold - no external pull-up required for unused inputs |
| 1OE, 2OE, 3OE, 4OE (pins 1,48,25,24) | Active-low output enables | Each controls one 4-bit output group; HIGH forces high-impedance OFF-state |
| VCC (pins 7,18,31,42) | Power supply | Four distributed VCC pins minimize IR drop and improve PSRR across wide operating frequency range |
| GND (pins 4,10,15,21,28,34,39,45) | Ground reference | Eight GND pins reduce ground inductance and suppress simultaneous switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Bus hold on all data inputs | Eliminates need for 16 external pull-up resistors - reduces BOM count and PCB area in space-constrained designs |
| IOFF partial power-down | Prevents backflow current when VCC = 0 V - essential for hot-plug and multi-rail power sequencing |
| Schmitt-trigger inputs | Supports slow-edge signals down to 20 ns/V transition rate - improves noise margin in noisy industrial environments |
| 5 V tolerant I/O | Enables direct connection to 5 V microcontrollers, FPGAs, or legacy peripherals without external level translators |
| Low dynamic power dissipation | CPD = 11.4 pF at VCC = 3.3 V - limits switching power to <1 mW at 10 MHz bus toggle rate |
Applications
| Industrial Backplane Buffering | Memory Address/Data Bus Interface |
|---|---|
Use Scenario: Isolating and driving 16-bit parallel address/data lines between FPGA and SRAM/Flash in programmable logic controllers. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer with per-group enable control, enabling time-multiplexed bus sharing between CPU and DMA controller. Use Value: 4.1 ns propagation delay and 6.5 ns disable time ensure setup/hold compliance for 100 MHz synchronous memory access. | Use Scenario: Level-shifting and fan-out buffering between 3.3 V SoC and 5 V legacy peripheral ICs on factory automation I/O modules. IC Role / Device Role / Timing Role: Voltage-tolerant bidirectional buffer that translates logic levels while maintaining signal integrity across mixed-supply domains. Use Value: 5 V I/O tolerance and bus hold eliminate external level shifters and pull-ups - reducing component count by ≥18 parts per channel. |
| Hot-Swappable Module Interface | Test Equipment Signal Conditioning |
Use Scenario: Enabling/disabling communication paths between powered-backplane slots and hot-pluggable daughter cards in modular instrumentation racks. IC Role / Device Role / Timing Role: 3-state isolation gate with IOFF protection, ensuring safe insertion/removal while main system remains operational. Use Value: IOFF leakage ≤20 μA at VCC = 0 V prevents backfeeding into unpowered modules - meeting IEC 61000-4-2 ESD-safe hot-swap requirements. | Use Scenario: Driving high-capacitance test fixture cables (≥50 pF) from low-drive-capability logic analyzers or pattern generators. IC Role / Device Role / Timing Role: Low-output-impedance line driver with Schmitt-trigger inputs to restore degraded edges on long traces. Use Value: 24 mA drive strength at 3.3 V and 5.3 ns max tpd (VCC = 2.5 V) maintain signal fidelity up to 80 MHz over 30 cm FR4 traces. |
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; identical pinout, voltage range, and timing | Requires external pull-ups on unused inputs; unsuitable for floating-input scenarios | Select when cost sensitivity outweighs need for bus hold and board space is constrained |
| SN74ALVC16244DGGR | Texas Instruments part; same 48-pin TSSOP, 1.65–3.6 V range, but no IOFF or bus hold | Lacks power-down protection and input hold - requires additional design safeguards for hot-swap use | Choose only if TI ecosystem alignment or legacy qualification mandates override functional gaps |
Compared with 74LVC16244ADGG and SN74ALVC16244DGGR, the 74LVCH16244ADL,112 uniquely integrates bus hold and IOFF in a single 48-pin package - reducing external components and enabling safer partial-power-down operation without compromising timing or voltage tolerance.
Availability
74LVCH16244ADL,112 is available at Aetrix Electronics and suitable for industrial backplane buffering, memory bus interfacing, and hot-swappable module designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVCH16244ADL,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 miniaturization in industrial, automotive, and consumer applications.
The 74LVCH16244ADL,112 belongs to Nexperia's LVC/LVCH advanced logic family, engineered specifically for robust mixed-voltage interfacing, low-noise bus driving, and safe power sequencing in harsh industrial environments.
FAQ
What is the maximum clock frequency supported by 74LVCH16244ADL,112?
The device does not operate on a clock; it is an asynchronous buffer. Its 4.1 ns max propagation delay at VCC = 3.3 V supports reliable data transfer on buses toggling up to ~100 MHz, assuming proper trace termination and load capacitance ≤30 pF. Timing is validated per JEDEC JESD8-7A/8-5A standards.
Can 74LVCH16244ADL,112 be used with a 1.2 V supply?
Yes - it is fully specified from 1.2 V to 3.6 V. At 1.2 V, VIH is 1.08 V min and VOL is 0.12 V max (IO = 100 μA), supporting interoperability with ultra-low-voltage ASICs and battery-powered controllers. Propagation delay increases to 11.0 ns max at 1.2 V.
Does 74LVCH16244ADL,112 require external pull-up resistors on unused inputs?
No - all 16 data inputs (1A0–4A3) include integrated bus hold circuitry. This sustains valid logic states without external components, even when inputs float. Control inputs (1OE–4OE) lack bus hold and must be actively driven or pulled.
How does IOFF protection function during system power-down?
When VCC drops to 0 V, the IOFF circuit disables all outputs and limits leakage to ±20 μA maximum, preventing reverse current flow from live 5 V buses into the unpowered IC. This meets IEC 61000-4-2 system-level ESD safety requirements for hot-swap architectures.
74LVCH16244ADL,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVCH
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74LVCH16244ADL,112 FAQ
1.How can I place an order for 74LVCH16244ADL,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH16244ADL,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 74LVCH16244ADL,112 reliable?
The price and inventory of 74LVCH16244ADL,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH16244ADL,112 is usually 5 days.
3.What payment methods are accepted for 74LVCH16244ADL,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH16244ADL,112 transactions.
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4.How is shipping managed for 74LVCH16244ADL,112?
74LVCH16244ADL,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH16244ADL,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 74LVCH16244ADL,112?
For technical support, including 74LVCH16244ADL,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH16244ADL,112 requirements.
6.How does Aetrix verify that 74LVCH16244ADL,112 is sourced from the original manufacturer or authorized distributors?
All 74LVCH16244ADL,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 74LVCH16244ADL,112 meets industry standards.
7.What is the process for return or replacement of 74LVCH16244ADL,112?
All 74LVCH16244ADL,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH16244ADL,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 74LVCH16244ADL,112 part is unused and in its original packaging.
Return procedure for 74LVCH16244ADL,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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