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Texas Instruments SN74LVTH162244KR
- Part No.:
- SN74LVTH162244KR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
SN74LVTH162244KR.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,973
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Product details
Overview
SN74LVTH162244KR from Texas Instruments is a 3.3-V ABT 16-bit buffer/driver with 3-state outputs, designed for mixed-mode interfacing between 3.3-V logic and 5-V systems. It provides true outputs, four independent 4-bit channels, symmetrical active-low output-enable inputs, and integrated 22-Ω series resistors to suppress overshoot/undershoot in high-speed bus applications.
For engineers reviewing the SN74LVTH162244KR datasheet, SN74LVTH162244KR pinout, SN74LVTH162244KR application, or SN74LVTH162244KR equivalent, key selection criteria include its 2.7–3.6-V supply range, ±12-mA drive capability per output, hot-insertion support via Ioff and power-up 3-state, distributed VCC/GND pins for noise reduction, and flow-through pinout for optimized PCB layout.
Technical Context
The SN74LVTH162244KR implements a widebus architecture with four independent 4-bit buffer sections, each controlled by dedicated active-low OE inputs (1OE–4OE). Its ABT (Advanced BiCMOS Technology) design enables TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) while operating at 3.3-V VCC, supporting direct connection to 5-V buses without level shifters.
Each output incorporates on-die 22-Ω series termination, eliminating external resistors and reducing signal integrity issues. The device features distributed power/ground pins, latch-up immunity >100 mA (JESD 78 Class II), and ESD protection exceeding 2000-V HBM, 200-V MM, and 1000-V CDM.
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 with full functionality |
| IOH/IOL | ±12 mA - drives standard TTL loads directly; no external pull-ups required for bus termination |
| tPLH/tPHL | Typ. 3.4 ns at VCC = 3.3 V - enables high-speed data transfer in 100-MHz-class parallel interfaces |
| Input Thresholds | VIH = 2 V, VIL = 0.8 V - ensures reliable recognition of 5-V TTL signals at 3.3-V supply |
| Output Series R | 22 Ω - integrated resistor reduces ringing and ground bounce (VOLP < 0.8 V at 3.3 V) |
| Ioff Current | ±100 µA at VCC = 0 - prevents backflow during hot insertion, protecting powered-down subsystems |
| θJA (DGG) | 70 °C/W - thermal performance suitable for dense PCB layouts without forced airflow |
Pinout & Package
SN74LVTH162244KR is packaged in a 48-pin TSSOP (DGG) with 0.5-mm pitch, JEDEC MO-153 compliant, body dimensions 12.6 × 6.2 mm, height 1.2 mm max. Pinout follows flow-through architecture for minimal trace crossing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE–4OE | Active-low output enable | Independent control per 4-bit group; asserts high-impedance state when high |
| 1A1–4A4 | Data inputs | 16 total inputs; TTL-compatible thresholds allow direct 5-V signal acceptance |
| 1Y1–4Y4 | True buffered outputs | 16 outputs with 22-Ω series resistance; source/sink up to 12 mA each |
| VCC (Pins 7, 18, 31, 42) | Power supply | Distributed VCC pins minimize simultaneous switching noise across all 4 groups |
| GND (Pins 4, 10, 21, 27, 34, 45) | Ground reference | Six GND pins provide low-inductance return paths for high-frequency switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 22-Ω output series resistors | Eliminates need for 16 discrete termination resistors, reducing BOM count and board area |
| Mixed-mode 5-V input tolerance | Accepts 5-V TTL signals at 3.3-V VCC without clamping diodes or external level translators |
| Hot-insertion support (Ioff + power-up 3-state) | Prevents current backflow and bus contention during live module replacement in backplane systems |
| Flow-through pinout architecture | Input and output pins arranged on opposite sides per group, enabling straight-layer routing and reduced crosstalk |
| Distributed VCC/GND pin placement | Reduces simultaneous switching noise by localizing power delivery per functional quadrant |
Applications
| Backplane Data Bus Interface | Industrial PLC I/O Module |
|---|---|
Use Scenario: Interfacing 3.3-V FPGA or microcontroller to legacy 5-V parallel backplane (e.g., VME, CompactPCI). IC Role / Device Role / Timing Role: Level-translating buffer isolating low-voltage logic from noisy 5-V bus while maintaining timing integrity. Use Value: Enables drop-in integration without redesigning bus termination or adding discrete level shifters; 22-Ω resistors suppress reflections on long traces. | Use Scenario: Driving 24-V digital inputs on industrial I/O cards using 3.3-V controller outputs. IC Role / Device Role / Timing Role: High-current buffer translating logic-level signals to robust 12-mA drive capability for noise-immune field wiring. Use Value: Delivers sufficient sink/source current to meet IEC 61000-4-2/4-4 immunity requirements without external drivers. |
| Memory Expansion Subsystem | Test Equipment Signal Conditioning |
Use Scenario: Expanding address/data bus width between SoC and external SRAM/Flash in embedded instrumentation. IC Role / Device Role / Timing Role: 16-bit bidirectional buffer (with direction control via OE) managing high-speed memory access cycles. Use Value: 3.4-ns propagation delay and low ground bounce (<0.8 V) ensure setup/hold timing margins are preserved at 100+ MHz clock rates. | Use Scenario: Conditioning digital stimulus/response signals in automated test equipment (ATE) channel cards. IC Role / Device Role / Timing Role: Isolating and strengthening low-voltage DUT signals before transmission over 1-meter cables to measurement units. Use Value: Integrated 22-Ω resistors and distributed grounding reduce jitter and EMI emissions, improving measurement repeatability. |
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 integrated 22-Ω resistors, 1.65–3.6-V VCC range | Lacks built-in termination; requires external resistors for clean signal integrity on long traces | Preferred when cost sensitivity outweighs signal integrity needs and board space allows discrete termination |
| SN74ALVC16244DGGR | Higher speed (tPD typ. 2.5 ns), same VCC range, no integrated series resistors | Optimized for maximum throughput in short-trace, low-noise environments only | Select when system-level impedance control is handled externally and sub-3-ns latency is critical |
Compared with SN74LVC16244ADGGR and SN74ALVC16244DGGR, the SN74LVTH162244KR uniquely combines 5-V-tolerant inputs, integrated 22-Ω termination, and hot-insertion support-making it the only choice for robust, drop-in 3.3-V-to-5-V bus bridging in industrial backplanes and modular systems.
Availability
SN74LVTH162244KR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, test equipment signal conditioning, memory expansion subsystems, and backplane data bus interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SN74LVTH162244KR 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 delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74LVTH162244KR belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically for high-reliability, mixed-voltage system interconnect in harsh electromagnetic environments.
FAQ
What is the recommended operating voltage range for SN74LVTH162244KR?
The SN74LVTH162244KR operates reliably across a VCC range of 2.7 V to 3.6 V. This range supports unregulated battery-powered systems and accommodates typical 3.3-V rail tolerances. Operation below 2.7 V places outputs in high-impedance mode; above 3.6 V risks permanent damage per absolute maximum ratings.
Does SN74LVTH162244KR support 5-V input signals while powered at 3.3 V?
Yes, SN74LVTH162244KR accepts 5-V TTL input levels (VI up to 5.5 V) with VCC = 3.3 V. Its input structure includes clamp diodes rated for 5.5-V VI, enabling direct interface to legacy 5-V logic without external level-shifting circuitry.
How does the integrated 22-Ω series resistor in SN74LVTH162244KR improve signal integrity?
The SN74LVTH162244KR integrates a precise 22-Ω resistor in series with each output driver. This damps transmission-line reflections on PCB traces longer than ~1/6 wavelength of the signal edge rate, reducing overshoot, undershoot, and ground bounce (VOLP < 0.8 V), thereby eliminating the need for 16 discrete SMT resistors.
Can SN74LVTH162244KR be used in hot-swap applications?
Yes, SN74LVTH162244KR supports hot insertion via two mechanisms: Ioff circuitry disables outputs when VCC = 0, preventing backflow current into powered subsystems; and power-up 3-state forces outputs into high-impedance during power ramp-up/down, avoiding bus contention.
What package type and pin count does SN74LVTH162244KR use?
SN74LVTH162244KR uses a 48-pin TSSOP (Thin Shrink Small Outline Package) with JEDEC MO-153 compliance, marked as DGG package. Its dimensions are 12.6 mm × 6.2 mm × 1.2 mm max, with 0.5-mm lead pitch and gull-wing leads for standard reflow assembly.
SN74LVTH162244KR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 56-VFBGA
- Packaging:
- Tape & Reel (TR)
- 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:
- 12mA, 12mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-BGA Microstar Junior (7x4.5)
SN74LVTH162244KR FAQ
1.How can I place an order for SN74LVTH162244KR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH162244KR 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 SN74LVTH162244KR reliable?
The price and inventory of SN74LVTH162244KR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH162244KR is usually 5 days.
3.What payment methods are accepted for SN74LVTH162244KR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVTH162244KR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVTH162244KR?
SN74LVTH162244KR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTH162244KR 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 SN74LVTH162244KR?
For technical support, including SN74LVTH162244KR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH162244KR requirements.
6.How does Aetrix verify that SN74LVTH162244KR is sourced from the original manufacturer or authorized distributors?
All SN74LVTH162244KR 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 SN74LVTH162244KR meets industry standards.
7.What is the process for return or replacement of SN74LVTH162244KR?
All SN74LVTH162244KR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH162244KR, 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 SN74LVTH162244KR part is unused and in its original packaging.
Return procedure for SN74LVTH162244KR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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