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Texas Instruments SN74LVTH16244ADL
- Part No.:
- SN74LVTH16244ADL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVTH16244ADL.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:409
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Product details
Overview
SN74LVTH16244ADL 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 down to 2.7 V. Used in backplane interface, memory address buffering, and bus isolation in industrial control systems.
For engineers reviewing the SN74LVTH16244ADL datasheet, SN74LVTH16244ADL pinout, SN74LVTH16244ADL application, or SN74LVTH16244ADL equivalent, key selection criteria include its 48-pin SSOP (DL) package, ±64 mA output drive capability at 3.3 V, bus-hold input retention without external resistors, and guaranteed hot-insertion compatibility via Ioff and power-up 3-state logic.
Technical Context
The SN74LVTH16244ADL implements four independent 4-bit noninverting buffers, each with active-low 3-state enable (OE). Its Advanced BiCMOS Technology (ABT) enables TTL-compatible interfacing while operating from a 3.3-V supply - supporting 5-V input tolerance and 5-V output swing under load. Bus-hold circuitry maintains valid logic states on undriven inputs without pullup/pulldown resistors.
During power-up/down, the device enters high-impedance state when VCC is below 1.5 V; OE must be pulled to VCC above that threshold to guarantee 3-state behavior. Output ground bounce (VOLP) is specified at <0.8 V (VCC = 3.3 V), and latch-up performance exceeds 500 mA per JESD 17.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation and brownout resilience in portable or industrial power domains. |
| IOL / IOH | 64 mA sink / –32 mA source at VCC = 3.3 V - drives heavy capacitive loads or multiple TTL inputs without external buffering. |
| tPLH/tPHL | 1.1–4.6 ns (VCC = 3.3 V, CL = 50 pF) - enables high-speed bus buffering in sub-5-ns timing-critical paths. |
| Input Voltage Tolerance | 0 V to 5.5 V - allows direct connection to 5-V logic families without level-shifting circuitry. |
| Bus-Hold Current | ±750 μA max (VCC = 3.6 V) - actively retains last valid logic state on floating inputs, eliminating external biasing components. |
| Ioff | ±100 μA (VCC = 0 V) - prevents backflow current during hot-swap events, protecting live backplanes and system integrity. |
| ESD Rating | 2000-V HBM, 200-V MM - meets industrial-grade robustness requirements for handling and board-level reliability. |
Pinout & Package
SN74LVTH16244ADL uses a 48-pin SSOP (Shrink Small Outline Package) with 0.5-mm pitch, body width 7.5 mm, and maximum height 2.0 mm - optimized for space-constrained PCB layouts while maintaining hand-solderability and reflow compatibility (MSL Level-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output-enable control for each 4-bit section | Independent gating of four buffer groups; OE tied high disables all outputs to high-Z, enabling bus sharing. |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data inputs (16 total) | All inputs feature integrated bus-hold; no external pullups required for unused or unterminated lines. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | True (noninverting) buffered outputs (16 total) | Output drive strength supports fanout to ≥10 LVTTL loads; symmetric rise/fall times ensure clean signal integrity. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four dedicated VCC pins reduce supply impedance and improve noise immunity across wide bus widths. |
| GND (Pins 4, 10, 15, 21, 27, 33, 38, 44) | Ground reference | Eight GND pins provide low-inductance return paths, minimizing ground bounce in high-speed switching applications. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode 5-V/3.3-V interface | Accepts 5-V inputs and drives 5-V loads while powered from 3.3-V rail - eliminates level translators in legacy-to-modern system upgrades. |
| Integrated bus-hold circuitry | Retains last valid logic state on all 16 inputs without external components - reduces BOM count and layout area in sparse-bus designs. |
| Ioff and power-up 3-state | Prevents current backflow during hot insertion and forces outputs into high-Z during power ramp - essential for modular backplane systems. |
| Low static power dissipation | ICC = 0.19 mA (outputs disabled, VCC = 3.6 V) - enables use in always-on subsystems with strict quiescent current budgets. |
| Robust ESD and latch-up immunity | 2000-V HBM ESD rating and >500 mA latch-up resistance per JESD 17 - ensures field reliability in harsh industrial environments. |
Applications
| Industrial Backplane Interface | Memory Address Buffering |
|---|---|
|
Use Scenario: Isolating and driving address/data lines between CPU and peripheral modules on a multi-slot industrial backplane. IC Role / Device Role / Timing Role: 16-bit noninverting buffer with independent OE controls per 4-bit segment, providing bidirectional signal integrity and timing margin. Use Value: Enables hot-swappable module insertion without bus contention; bus-hold prevents glitches on disconnected slots. |
Use Scenario: Buffering 16-bit address bus from microcontroller to SRAM or flash memory in embedded control units. IC Role / Device Role / Timing Role: Low-propagation-delay (≤4.6 ns) driver ensuring setup/hold compliance across temperature and voltage extremes. Use Value: Eliminates need for discrete pullups on address lines; 64-mA drive sustains signal integrity over 10-cm traces. |
| Legacy System Bus Translation | Programmable Logic I/O Expansion |
|
Use Scenario: Interfacing 5-V FPGA I/O banks to 3.3-V processor peripherals in retrofitted automation controllers. IC Role / Device Role / Timing Role: Level-translating buffer with 5-V tolerant inputs and 3.3-V compatible outputs - no external voltage translation required. Use Value: Reduces component count and PCB layer count by replacing dual-supply translators with single-rail solution. |
Use Scenario: Expanding GPIO count from an FPGA or MCU to drive LEDs, relays, or sensors in test equipment. IC Role / Device Role / Timing Role: High-current (64 mA) 3-state driver allowing dynamic reconfiguration of shared I/O resources. Use Value: Supports simultaneous driving of multiple 20-mA LEDs or 100-Ω relay coils without external transistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16244ADGGR | Lower drive (24 mA), no bus-hold, 1.65–3.6 V VCC; lacks Ioff and hot-insertion support. | Suitable only for 3.3-V-only systems with externally biased inputs and controlled power sequencing. | Select when cost sensitivity outweighs mixed-voltage or hot-swap requirements. |
| SN74ALVC16244DL | Higher speed (tPD ≤ 3.3 ns), 1.65–3.6 V VCC, no bus-hold, no Ioff; requires external pullups. | Optimized for high-frequency digital test equipment where propagation delay dominates over robustness. | Choose for sub-3.5 ns timing-critical paths where bus-hold and hot-swap are not needed. |
Compared with SN74LVC16244ADGGR and SN74ALVC16244DL, the SN74LVTH16244ADL uniquely delivers 5-V input tolerance, integrated bus-hold, and Ioff-enabled hot insertion - making it the only option among the three qualified for mixed-voltage backplane and modular industrial applications.
Availability
SN74LVTH16244ADL is available at Aetrix Electronics and suitable for industrial backplane interface, memory address buffering, and programmable logic I/O expansion requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for SN74LVTH16244ADL 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 decades of heritage in logic and interface solutions.
The SN74LVTH16244ADL belongs to TI's Widebus™ family of advanced ABT logic devices, engineered specifically for robust mixed-voltage system interfacing, hot-plug reliability, and industrial-grade signal integrity.
FAQ
What is the recommended operating voltage range for the SN74LVTH16244ADL?
The SN74LVTH16244ADL is specified to operate from 2.7 V to 3.6 V on VCC. Operation below 2.7 V is not guaranteed - though the device enters high-impedance state below 1.5 V, functional behavior is only assured within the recommended range. The SN74LVTH16244ADL supports unregulated battery operation down to 2.7 V, making it suitable for portable industrial tools.
Does the SN74LVTH16244ADL require external pullup or pulldown resistors on its inputs?
No. The SN74LVTH16244ADL integrates bus-hold circuitry on all 16 data inputs, which actively maintains the last valid logic state without external components. TI explicitly states that pullup or pulldown resistors are not recommended when bus-hold is enabled - using them may cause excessive current draw or logic instability. This feature is confirmed in the SN74LVTH16244ADL datasheet Section 1.
Can the SN74LVTH16244ADL be used in hot-insertion applications?
Yes. The SN74LVTH16244ADL includes both Ioff circuitry and power-up 3-state logic, which are explicitly designed for hot-insertion. When VCC = 0 V, Ioff limits current flow to ±100 μA, preventing damage to live backplanes. During power ramp, outputs remain in high-impedance until VCC stabilizes - a core requirement validated in the SN74LVTH16244ADL production data.
What package type does the SN74LVTH16244ADL use, and what are its key mechanical dimensions?
The SN74LVTH16244ADL uses a 48-pin SSOP (DL) package: 7.5 mm body width, 15.4 mm length, 2.0 mm max height, and 0.5 mm lead pitch. Its JEDEC MO-153-compliant footprint supports standard reflow profiles (MSL Level-1, peak 260°C), and the tube packaging (25 units/tube) is optimized for manual assembly and small-batch prototyping.
How does the SN74LVTH16244ADL handle 5-V signals while powered from 3.3 V?
The SN74LVTH16244ADL supports 5-V input and output voltages while operating from a 3.3-V VCC supply - a capability enabled by its Advanced BiCMOS Technology (ABT) architecture. Input voltage tolerance extends to 5.5 V, and outputs can drive 5-V TTL loads. This mixed-mode operation is fully characterized in the SN74LVTH16244ADL datasheet's Recommended Operating Conditions table.
SN74LVTH16244ADL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74LVTH16244ADL FAQ
1.How can I place an order for SN74LVTH16244ADL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH16244ADL 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 SN74LVTH16244ADL reliable?
The price and inventory of SN74LVTH16244ADL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH16244ADL is usually 5 days.
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Once your SN74LVTH16244ADL 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 SN74LVTH16244ADL?
For technical support, including SN74LVTH16244ADL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH16244ADL requirements.
6.How does Aetrix verify that SN74LVTH16244ADL is sourced from the original manufacturer or authorized distributors?
All SN74LVTH16244ADL 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 SN74LVTH16244ADL meets industry standards.
7.What is the process for return or replacement of SN74LVTH16244ADL?
All SN74LVTH16244ADL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16244ADL, 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 SN74LVTH16244ADL part is unused and in its original packaging.
Return procedure for SN74LVTH16244ADL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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