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Texas Instruments SN74LVT16244BDLR
- Part No.:
- SN74LVT16244BDLR
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVT16244BDLR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,542
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Product details
Overview
SN74LVT16244BDLR from Texas Instruments is a 3.3-V ABT 16-bit noninverting buffer/driver with 3-state outputs, designed for mixed-mode (3.3-V VCC / 5-V I/O) interfacing in high-speed digital systems. It features four independent 4-bit sections, active-low output-enable inputs (1OE–4OE), ±64 mA output drive at 3.3 V, and supports hot insertion via Ioff and power-up 3-state logic. Used in bus interface, memory address/data buffering, and level translation between 3.3-V logic and legacy 5-V subsystems.
For engineers reviewing the SN74LVT16244BDLR datasheet, SN74LVT16244BDLR pinout, SN74LVT16244BDLR application, or SN74LVT16244BDLR equivalent, key selection considerations include its 48-pin SSOP (DL) package, 3.3-V supply with 5-V tolerant inputs/outputs, symmetrical 3-state control per quadrant, low ground bounce (<0.8 V), and compatibility with hot-swap backplane architectures requiring Ioff protection.
Technical Context
The SN74LVT16244BDLR implements Advanced BiCMOS Technology (ABT) to deliver TTL-compatible output levels while operating from a 3.3-V supply. Its architecture separates input and output stages to enable 5-V signal tolerance on both A (input) and Y (output) pins regardless of VCC level - critical for bridging voltage domains without external level shifters.
Each of the four 4-bit sections has dedicated active-low OE control (1OE–4OE), enabling independent gating of data flow. The device enters high-impedance state when VCC drops below 1.5 V or when OE is asserted; Ioff circuitry prevents reverse current during partial power-down, satisfying JEDEC JESD78 Class II latch-up immunity (>100 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 2.7 V to 3.6 V - supports regulated and unregulated battery operation down to 2.7 V without functional degradation. |
| IOL / IOH Drive | 64 mA sink / –32 mA source at VCC = 3.3 V - sufficient to drive 50-Ω transmission lines or multiple TTL loads directly. |
| Input Voltage Tolerance | –0.5 V to 5.5 V - enables direct connection to 5-V logic without clamping diodes or external resistors. |
| tPLH / tPHL Propagation | 2.3 ns / 2.0 ns typical at VCC = 3.3 V, CL = 50 pF - ensures sub-3 ns timing margins for 100+ MHz bus applications. |
| VOL / VOH Levels | 0.5 V max at IOL = 64 mA / 2.0 V min at IOH = –32 mA - meets LVTTL output voltage specifications for reliable interoperation. |
| Power-Up 3-State | Automatic high-Z activation during VCC ramp (0–1.5 V) - eliminates bus contention at power-on without external reset sequencing. |
| Ioff Current | ±100 µA at VCC = 0 V - blocks damaging backflow current when powered off in live backplanes or hot-swap slots. |
Pinout & Package
SN74LVT16244BDLR uses a 48-pin SSOP (Shrink Small-Outline Package), DL suffix, with 0.5-mm pitch, 12.4 mm × 6.1 mm body size, and 1.2 mm max height per JEDEC MO-153. Pin 1 is marked by a beveled corner and located at top-left when viewed from top with marking side up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data Inputs (16 total) | True-level inputs accepting 0–5.5 V; no internal pullups/pulldowns - must be driven or tied to VCC/GND. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Buffered Outputs (16 total) | 3-state, noninverting outputs with ±64 mA drive; high-Z when corresponding OE is high. |
| 1OE–4OE | Active-Low Output Enables | Independent per-quadrant control; OE = low enables outputs, OE = high forces high-impedance state. |
| VCC (Pins 7, 18, 31, 42) | Supply Voltage | Single 3.3-V rail powers all logic and output stages; four distributed pins reduce IR drop and improve noise immunity. |
| GND (Pins 4, 10, 15, 21, 27, 32, 37, 43) | Ground Reference | Eight GND pins provide low-inductance return paths for switching currents and minimize ground bounce (VOLP < 0.8 V). |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode I/O tolerance | 5-V input/output compatibility with 3.3-V VCC eliminates need for discrete level translators in hybrid voltage systems. |
| Hot-insertion support | Ioff and power-up 3-state prevent damage and bus conflicts during live card insertion into powered backplanes. |
| Low ground bounce | Typical VOLP < 0.8 V at VCC = 3.3 V ensures signal integrity in high-speed parallel buses with simultaneous switching outputs. |
| Quadrant-level 3-state control | Four independent OE inputs allow selective isolation of 4-bit segments - ideal for partitioned address/data buses or multi-drop configurations. |
| Latch-up immunity | Exceeds 100 mA per JESD 78 Class II - guarantees robust operation in noisy industrial environments with transient coupling. |
Applications
| Bus Interface Buffering | Memory Address/Data Buffering |
|---|---|
Use Scenario: Isolating and driving a 16-bit parallel system bus between a 3.3-V microcontroller and legacy 5-V peripheral ICs. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state outputs acting as bidirectional bus driver and voltage-domain translator. Use Value: Eliminates external level-shifting components while maintaining sub-3 ns propagation delay and full 5-V I/O tolerance. | Use Scenario: Driving address and data lines from a 3.3-V FPGA to 5-V SRAM or Flash memory devices. IC Role / Device Role / Timing Role: Quad-section 4-bit buffer providing independent enable control per memory access channel. Use Value: Enables precise timing control over memory read/write strobes and reduces board space versus discrete buffers. |
| Hot-Swap Backplane Interface | Industrial Control I/O Expansion |
Use Scenario: Interfacing a field-replaceable module to a powered 5-V backplane in telecom or server chassis. IC Role / Device Role / Timing Role: Hot-insertion–qualified buffer preventing current backflow and ensuring glitch-free bus entry/exit. Use Value: Ioff protection and automatic power-up 3-state eliminate need for complex hot-swap controllers or sequencing circuits. | Use Scenario: Expanding digital I/O capability of a PLC CPU using 3.3-V logic while connecting to 5-V sensors and actuators. IC Role / Device Role / Timing Role: Level-translating buffer isolating CPU-side logic from higher-voltage field-side signals. Use Value: Supports direct connection to 5-V industrial sensors without external biasing, reducing BOM count and failure points. |
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 |
|---|---|---|---|
| SN74LVTH16244ADLR | Lower drive (±24 mA), LVTH family, 2.7–3.6 V only, no 5-V I/O tolerance | Suitable only for pure 3.3-V systems; cannot replace SN74LVT16244BDLR where 5-V interfacing is required | Select only if system operates exclusively at 3.3 V and lower power consumption is prioritized over drive strength. |
| 74ALVC16244PW,118 | NXP part; 1.65–3.6 V operation, ±24 mA drive, 5-V tolerant inputs only (not outputs) | Output voltage swing limited to VCC; requires external pullups for 5-V signaling on outputs | Acceptable for input-only 5-V interfacing but not for bidirectional 5-V bus driving - verify output load requirements before substitution. |
Compared with SN74LVTH16244ADLR and 74ALVC16244PW,118, the SN74LVT16244BDLR uniquely delivers full 5-V input/output tolerance with ±64 mA drive in a single 48-pin SSOP package - making it irreplaceable in mixed-voltage bus bridging where output-level translation is mandatory.
Availability
SN74LVT16244BDLR is available at Aetrix Electronics and suitable for industrial control systems, telecom backplane interfaces, and embedded memory expansion requiring stable component supply and long-term lifecycle continuity.
Supply support for SN74LVT16244BDLR 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 logic solutions, with decades of innovation in high-speed interface and power-efficient logic families.
The SN74LVT16244BDLR belongs to TI's Widebus™ ABT logic family, engineered specifically for high-speed, mixed-voltage system interfacing - targeting applications where 3.3-V core logic must reliably communicate with legacy 5-V infrastructure.
FAQ
What is the maximum operating temperature range for SN74LVT16244BDLR?
The SN74LVT16244BDLR is rated for operation from –40°C to +85°C ambient temperature, consistent with commercial-grade logic devices. This range is specified in the Recommended Operating Conditions table of the official TI datasheet SCBS716E, and applies to all DL-package variants including SN74LVT16244BDLR.
Does SN74LVT16244BDLR support true 5-V output signaling?
Yes, SN74LVT16244BDLR supports true 5-V output signaling: its outputs are 5-V tolerant and can drive to ≥2.0 V (VOH min) at –32 mA while powered from 3.3 V, meeting LVTTL high-level output specs compatible with 5-V TTL inputs. This is confirmed in the Electrical Characteristics table under VOH test conditions.
Can SN74LVT16244BDLR be used without external pullup resistors on OE pins?
Yes - SN74LVT16244BDLR does not require external pullups on OE pins for basic operation. However, to guarantee high-impedance state when VCC rises above 1.5 V during power-up, TI recommends tying each OE to VCC via a pullup resistor; minimum value depends on driver sink capability, typically ≤10 kΩ.
Is SN74LVT16244BDLR RoHS compliant and lead-free?
Yes, SN74LVT16244BDLR is RoHS compliant and features NiPdAu (NIPDAU) lead finish. Per TI's Packaging Information Addendum, it carries "Yes" for RoHS and "Level-1-260C-UNLIM" MSL rating, confirming full compliance with EU Directive 2011/65/EU and suitability for standard reflow processes.
How many independent 3-state control inputs does SN74LVT16244BDLR have?
SN74LVT16244BDLR has four independent active-low 3-state control inputs: 1OE, 2OE, 3OE, and 4OE - one per 4-bit quadrant. This allows granular control over output enable/disable states, supporting flexible bus segmentation and power-aware data gating in complex digital systems.
SN74LVT16244BDLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74LVT16244BDLR FAQ
1.How can I place an order for SN74LVT16244BDLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVT16244BDLR 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 SN74LVT16244BDLR reliable?
The price and inventory of SN74LVT16244BDLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVT16244BDLR is usually 5 days.
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4.How is shipping managed for SN74LVT16244BDLR?
SN74LVT16244BDLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVT16244BDLR 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 SN74LVT16244BDLR?
For technical support, including SN74LVT16244BDLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVT16244BDLR requirements.
6.How does Aetrix verify that SN74LVT16244BDLR is sourced from the original manufacturer or authorized distributors?
All SN74LVT16244BDLR 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 SN74LVT16244BDLR meets industry standards.
7.What is the process for return or replacement of SN74LVT16244BDLR?
All SN74LVT16244BDLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT16244BDLR, 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 SN74LVT16244BDLR part is unused and in its original packaging.
Return procedure for SN74LVT16244BDLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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