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Texas Instruments SN74LVTH16244ADLG4
- Part No.:
- SN74LVTH16244ADLG4
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVTH16244ADLG4.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,962
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Product details
Overview
SN74LVTH16244ADLG4 from Texas Instruments is a 3.3-V ABT 16-bit noninverting buffer/driver with 3-state outputs, designed for mixed-mode signal operation (5-V inputs/outputs with 3.3-V VCC). It features bus-hold circuitry on all data inputs, Ioff support for hot insertion, and operates across –40°C to 125°C. It is used in backplane interface, memory address buffering, and bus isolation in industrial control systems.
For engineers reviewing the SN74LVTH16244ADLG4 datasheet, SN74LVTH16244ADLG4 pinout, SN74LVTH16244ADLG4 application, or SN74LVTH16244ADLG4 equivalent, key selection criteria include its 3-state enable architecture, TTL-compatible input thresholds at 3.3-V supply, bus-hold current specification (±750 µA), and SSOP-48 package thermal impedance (63°C/W).
Technical Context
The SN74LVTH16244ADLG4 implements four independent 4-bit noninverting buffers, each with active-low output-enable (OE) control and symmetrical drive capability (IOL = 64 mA, IOH = –32 mA at VCC = 3 V). Its Advanced BiCMOS Technology (ABT) enables low static power dissipation while maintaining TTL-level interface compatibility.
Bus-hold circuitry actively maintains valid logic states on undriven inputs without external resistors, with dynamic hold current up to ±750 µA. Power-up 3-state and Ioff protection ensure safe hot-insertion: outputs remain high-impedance when VCC is below 1.5 V or during power transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation down to 2.7 V without functional degradation |
| IOL / IOH | 64 mA / –32 mA at VCC = 3 V - drives heavy capacitive loads or multiple TTL inputs directly |
| tPLH/tPHL | 1.1 ns to 4.6 ns at VCC = 3.3 V, CL = 50 pF - enables high-speed bus buffering in sub-5 ns timing-critical paths |
| Bus-Hold Current | ±750 µA max at VCC = 3.6 V - eliminates need for external pullup/pulldown resistors on floating data lines |
| Ioff | ±100 µA at VCC = 0 V - prevents damaging backflow current during hot-swap or partial power-down |
| θJA | 63°C/W - SSOP-48 thermal performance suitable for sustained 50–100 mW power dissipation in industrial ambient |
| VIL/VIH | 0.8 V / 2.0 V - TTL-compatible input thresholds allow direct interfacing with 5-V logic families |
Pinout & Package
SN74LVTH16244ADLG4 uses a 48-pin SSOP (Shrink Small Outline Package) with 0.635 mm lead pitch, 12.6 mm × 7.5 mm body size, and 1.2 mm max height. The package is RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output-enable control per 4-bit section | Each OE independently disables its associated 4-bit buffer group into high-impedance state |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data inputs (16 total) | All inputs feature integrated bus-hold; no external biasing required for unused pins |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Noninverting buffered outputs (16 total) | True outputs with symmetrical drive strength; compatible with 5-V TTL loads |
| VCC (pins 7, 18, 31, 42) | Power supply | Four dedicated VCC pins reduce supply noise and improve high-frequency stability |
| GND (pins 4, 10, 22, 27, 34, 45) | Ground reference | Six GND pins provide low-inductance return paths for switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | Accepts 5-V inputs and drives 5-V loads while powered from 3.3-V VCC, enabling seamless voltage translation between legacy and low-voltage subsystems |
| Bus-hold circuitry | Eliminates external pullup/pulldown resistors on all 16 data inputs, reducing BOM count and PCB area in high-pin-count bus interfaces |
| Hot-insertion support | Ioff and power-up 3-state prevent backdrive and bus contention during live board insertion into powered backplanes |
| Low ground bounce | VOLP < 0.8 V at VCC = 3.3 V ensures clean signal integrity under fast-switching, high-current conditions |
| Wide temperature range | Specified from –40°C to +125°C, supporting deployment in automotive engine compartments and industrial motor drives |
Applications
| Backplane Interface Buffering | Memory Address Bus Isolation |
|---|---|
Use Scenario: Isolating address/data buses between CPU and peripheral cards in modular industrial PLC chassis with shared 5-V backplane. IC Role / Device Role / Timing Role: Noninverting 16-bit buffer providing level-shifted, noise-immune signal transmission from 3.3-V controller to 5-V peripheral slots. Use Value: Enables reliable hot-swap of modules via Ioff and power-up 3-state, eliminating bus contention during card insertion/removal. | Use Scenario: Driving SRAM or Flash memory address lines in embedded controllers where MCU runs at 3.3 V but memory requires 5-V tolerant inputs. IC Role / Device Role / Timing Role: Address-line driver with TTL-compatible VIH/VIL thresholds ensuring correct decoding even with marginal signal swing. Use Value: Bus-hold circuitry maintains valid address state during CPU reset or sleep modes, preventing memory access errors. |
| Industrial I/O Module Signal Conditioning | Digital Test Equipment Channel Expansion |
Use Scenario: Buffering digital I/O signals between FPGA-based controller and field-side 24-V discrete I/O terminals in factory automation cabinets. IC Role / Device Role / Timing Role: Signal repeater with high drive strength (64 mA sink) driving long traces and optocoupler inputs. Use Value: Low ground bounce (<0.8 V) and symmetrical output drive minimize timing skew across 16 parallel channels. | Use Scenario: Expanding digital pattern generator outputs in ATE systems requiring synchronized 16-bit stimulus vectors to DUTs. IC Role / Device Role / Timing Role: Precision timing buffer with tPLH/tPHL ≤ 4.6 ns ensuring sub-5 ns channel-to-channel skew across all 16 bits. Use Value: Four independent OE controls allow dynamic partitioning of 16-bit vector into four 4-bit segments for multi-site testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16244ADGGR | Lower drive strength (24 mA sink), no bus-hold, 1.65–3.6 V VCC range | Suitable only for 3.3-V-only systems; requires external biasing on unused inputs | Select when cost sensitivity outweighs mixed-voltage and hot-swap requirements |
| SN74ALVCH16244DLR | Higher speed (tPD ≤ 3.2 ns), 1.65–3.6 V VCC, no Ioff or bus-hold | Not rated for hot insertion; lacks protection for undriven inputs in modular systems | Prefer for high-speed, single-supply designs where layout guarantees stable input states |
Compared with SN74LVC16244ADGGR and SN74ALVCH16244DLR, the SN74LVTH16244ADLG4 uniquely combines 5-V-tolerant inputs, bus-hold, Ioff, and industrial temperature range-making it the only choice for robust mixed-voltage backplane and hot-plug applications.
Availability
SN74LVTH16244ADLG4 is available at Aetrix Electronics and suitable for industrial control systems, automated test equipment, and modular PLC backplane interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVTH16244ADLG4 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with over 90 years of innovation in industrial, automotive, and communications markets.
The SN74LVTH16244ADLG4 belongs to TI's Widebus™ family of ABT logic devices, engineered specifically for mixed-voltage system interfacing, hot-swap reliability, and industrial-grade signal integrity in harsh operating environments.
FAQ
What is the maximum operating temperature for SN74LVTH16244ADLG4?
The SN74LVTH16244ADLG4 is fully specified for operation from –40°C to +125°C. This extended temperature range is validated per JEDEC standards and supports deployment in engine control units, industrial motor drives, and outdoor telecom infrastructure where ambient temperatures exceed commercial limits. The SSOP-48 package's 63°C/W thermal resistance ensures stable junction temperatures under typical industrial power dissipation.
Does SN74LVTH16244ADLG4 require external pullup resistors on unused inputs?
No, SN74LVTH16244ADLG4 does not require external pullup or pulldown resistors on unused inputs. Its integrated bus-hold circuitry actively maintains valid logic states with ±750 µA dynamic hold current, eliminating floating input risks and reducing BOM count. This feature is confirmed in the device's datasheet Section 1 "Features" and Electrical Characteristics table under II(hold).
Can SN74LVTH16244ADLG4 interface directly with 5-V logic while powered at 3.3 V?
Yes, SN74LVTH16244ADLG4 supports mixed-mode signal operation: it accepts 5-V input voltages and drives 5-V loads while powered from a 3.3-V VCC. This is enabled by its ABT process and verified in the Absolute Maximum Ratings (VI up to 7 V) and Recommended Operating Conditions (VI up to 5.5 V), making it ideal for bridging legacy 5-V and modern 3.3-V subsystems.
What package type is used for SN74LVTH16244ADLG4?
SN74LVTH16244ADLG4 uses a 48-pin SSOP (Shrink Small Outline Package) with dimensions 12.6 mm × 7.5 mm and 0.635 mm lead pitch. It is RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating. This package is documented in TI's PACKAGE OPTION ADDENDUM and mechanical drawing DGG0048A, confirming compatibility with standard SSOP reflow profiles.
How does SN74LVTH16244ADLG4 support hot-insertion in backplane systems?
SN74LVTH16244ADLG4 supports hot-insertion via two key features: Ioff circuitry disables outputs when VCC = 0 V (preventing backdrive current), and power-up 3-state holds outputs in high-impedance during VCC ramp-up/down. These functions are explicitly tested and guaranteed per JESD78, enabling safe live insertion into powered backplanes without disrupting bus operation.
SN74LVTH16244ADLG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74LVTH16244ADLG4 FAQ
1.How can I place an order for SN74LVTH16244ADLG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH16244ADLG4 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 SN74LVTH16244ADLG4 reliable?
The price and inventory of SN74LVTH16244ADLG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH16244ADLG4 is usually 5 days.
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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 SN74LVTH16244ADLG4?
For technical support, including SN74LVTH16244ADLG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH16244ADLG4 requirements.
6.How does Aetrix verify that SN74LVTH16244ADLG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVTH16244ADLG4 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 SN74LVTH16244ADLG4 meets industry standards.
7.What is the process for return or replacement of SN74LVTH16244ADLG4?
All SN74LVTH16244ADLG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16244ADLG4, 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 SN74LVTH16244ADLG4 part is unused and in its original packaging.
Return procedure for SN74LVTH16244ADLG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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