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Texas Instruments 74LVTH162244DLRG4
- Part No.:
- 74LVTH162244DLRG4
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74LVTH162244DLRG4.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,600
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Product details
Overview
74LVTH162244DLRG4 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, symmetrical active-low output-enable inputs, and integrated 22-Ω series resistors to suppress overshoot/undershoot. It supports hot insertion and operates down to 2.7 V, making it suitable for industrial backplane and memory interface applications.
For engineers reviewing the 74LVTH162244DLRG4 datasheet, 74LVTH162244DLRG4 pinout, 74LVTH162244DLRG4 application, or 74LVTH162244DLRG4 equivalent, key selection criteria include its 16-bit 3-state buffering capability, 12-mA drive strength per output, 2.7–3.6-V supply range, Ioff-enabled hot-swap support, and SSOP-48 (DL) package compatibility with legacy 5-V TTL environments.
Technical Context
The 74LVTH162244DLRG4 implements four independent 4-bit noninverting buffers, each with dedicated active-low OE control (1OE–4OE). Its ABT (Advanced BiCMOS Technology) architecture enables TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V) while operating at 3.3-V VCC, supporting bidirectional voltage translation without level shifters.
It features distributed VCC/GND pins and flow-through pinout to minimize switching noise and simplify PCB layout. The device incorporates power-up 3-state and Ioff circuitry to ensure high-impedance outputs during power ramping or when powered down, preventing bus contention and backflow current in live-insertion scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation and tolerates supply droop in portable/embedded systems |
| IOL / IOH | ±12 mA - sufficient to drive standard TTL loads and 50-pF transmission lines without external buffers |
| Propagation Delay | tPLH/tPHL ≤ 5.1 ns @ VCC = 3.3 V - enables reliable operation in 100-MHz+ data paths |
| Input Thresholds | VIH = 2.0 V, VIL = 0.8 V - ensures robust recognition of 5-V TTL logic levels at 3.3-V supply |
| Output Series Resistance | 22 Ω integrated - eliminates need for external termination resistors, reducing BOM count and board area |
| Ioff Current | ±100 µA @ VCC = 0 - blocks damaging back-current during hot insertion, protecting upstream drivers |
| ESD Rating | HBM: 2000 V - meets industrial-grade ESD immunity requirements without additional protection circuitry |
Pinout & Package
74LVTH162244DLRG4 is packaged in a 48-pin Plastic Small-Outline (SSOP) package (DL), 0.300-inch body width, JEDEC MO-118 compliant, with 0.025-inch lead pitch. Pinout follows flow-through architecture for optimal signal routing.
| 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 connection to 5-V sources |
| 1Y1–4Y4 | True buffered outputs | 16 total outputs; each includes 22-Ω series resistor for clean edge control |
| VCC (Pins 7, 21, 34, 48) | Power supply | Distributed VCC pins reduce simultaneous switching noise and improve PSRR |
| GND (Pins 4, 10, 15, 25, 32, 37, 43) | Ground reference | Seven GND pins provide low-inductance return paths for all output groups |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode interface support | Accepts 5-V inputs and drives 5-V loads while powered from 3.3-V rail - eliminates external level translators |
| Integrated 22-Ω output resistors | Reduces signal reflections and ringing on stubbed or unterminated traces - simplifies layout and improves signal integrity |
| Hot-insertion capability | Ioff and power-up 3-state ensure safe insertion into live backplanes without disrupting system operation |
| Flow-through pinout | Input and output pins aligned on opposite sides - enables straight PCB trace routing and minimizes crosstalk |
| Distributed power/ground | Multiple VCC/GND pins per functional quadrant - lowers ground bounce (VOLP < 0.8 V) and improves noise margin |
Applications
| Backplane Interface | Memory Subsystem Buffering |
|---|---|
Use Scenario: Interfacing 3.3-V FPGA I/O banks to legacy 5-V parallel bus peripherals in telecom line cards. IC Role / Device Role: Level-translating 16-bit unidirectional buffer with independent OE control per nibble. Use Value: Eliminates discrete level shifters and reduces interconnect delay by integrating termination resistance. | Use Scenario: Driving address/data lines between a 3.3-V microcontroller and 5-V SRAM or flash memory arrays. IC Role / Device Role: True-output buffer providing TTL-compatible drive strength and noise-immune input thresholds. Use Value: Ensures reliable read/write timing margins under varying VCC conditions (2.7–3.6 V) and temperature extremes. |
| Hot-Swappable Module Control | Industrial I/O Expansion |
Use Scenario: Enabling safe insertion/removal of mezzanine cards in programmable logic controller (PLC) chassis. IC Role / Device Role: Isolation buffer with Ioff and power-up 3-state to prevent backfeeding during card insertion. Use Value: Guarantees zero current flow into powered-down modules, meeting IEC 61000-4-2 Class A immunity requirements. | Use Scenario: Expanding GPIO count on a 3.3-V industrial MCU to control multiple 5-V relay drivers and sensor interfaces. IC Role / Device Role: 16-bit output expander with latch-up immunity (>100 mA per JESD 78 Class II) and ESD-hardened I/O. Use Value: Provides robust, field-replaceable I/O extension without requiring additional voltage translation or protection components. |
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 |
|---|---|---|---|
| SN74LVC16244ADLRG4 | Lower drive (±24 mA), no integrated series resistors, 1.65–3.6-V VCC range | Better suited for 1.8-V/2.5-V systems; requires external termination for clean edges | Select when lower supply voltage or higher drive is needed, but accept added layout complexity |
| 74ALVCH162244GR | Higher speed (tPD ≤ 3.9 ns), same 2.3–3.6-V range, no integrated resistors | Optimized for high-frequency memory buses; lacks Ioff for hot-swap use cases | Prefer for timing-critical applications where hot insertion is not required |
Compared with SN74LVC16244ADLRG4 and 74ALVCH162244GR, the 74LVTH162244DLRG4 uniquely combines 5-V-tolerant inputs, integrated 22-Ω termination, and Ioff-enabled hot-swap support in a single SSOP-48 package - making it the only option among the three qualified for mixed-voltage backplane and live-insertion designs.
Availability
74LVTH162244DLRG4 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystem buffering, hot-swappable module control, and industrial I/O expansion requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVTH162244DLRG4 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 74LVTH162244DLRG4 belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically for high-speed, mixed-voltage system interconnect with emphasis on signal integrity, power efficiency, and robustness in harsh environments.
FAQ
What is the recommended operating voltage range for the 74LVTH162244DLRG4?
The 74LVTH162244DLRG4 is specified to operate over a VCC range of 2.7 V to 3.6 V. This allows reliable function under unregulated battery conditions and accommodates typical 3.3-V supply tolerances. Operation outside this range may result in undefined behavior or damage; absolute maximum rating is 4.6 V.
Does the 74LVTH162244DLRG4 support hot insertion, and how is it implemented?
Yes, the 74LVTH162244DLRG4 supports hot insertion via two integrated features: Ioff circuitry disables outputs when VCC = 0, preventing back-current flow, and power-up 3-state holds outputs in high-impedance during VCC ramp-up. These functions are inherent to the silicon design and require no external components to implement safely in live backplane applications.
What is the purpose of the 22-Ω series resistors integrated into each output of the 74LVTH162244DLRG4?
The 22-Ω series resistors integrated into each output of the 74LVTH162244DLRG4 serve to dampen signal reflections and reduce overshoot/undershoot on transmission lines. This eliminates the need for external series termination resistors, simplifying PCB layout, reducing BOM cost, and improving signal integrity-especially in stub-loaded or unterminated bus configurations.
Can the 74LVTH162244DLRG4 interface directly with 5-V logic systems?
Yes, the 74LVTH162244DLRG4 accepts 5-V input signals (VI up to 5.5 V) while operating from a 3.3-V supply, and its outputs can drive 5-V TTL loads. This mixed-mode capability is enabled by its ABT process and input structure, allowing direct connection to legacy 5-V peripherals without external level-shifting circuitry.
What package type and pin count does the 74LVTH162244DLRG4 use?
The 74LVTH162244DLRG4 uses a 48-pin Plastic Small-Outline Package (SSOP), designated DL by Texas Instruments, with 0.025-inch lead pitch and 0.300-inch body width. It complies with JEDEC MO-118 and is RoHS-compliant with green (Pb-free, Sb/Br-free) finish and CU NIPDAU plating.
74LVTH162244DLRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- 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:
- 48-SSOP
74LVTH162244DLRG4 FAQ
1.How can I place an order for 74LVTH162244DLRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH162244DLRG4 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 74LVTH162244DLRG4 reliable?
The price and inventory of 74LVTH162244DLRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH162244DLRG4 is usually 5 days.
3.What payment methods are accepted for 74LVTH162244DLRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVTH162244DLRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVTH162244DLRG4?
74LVTH162244DLRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH162244DLRG4 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 74LVTH162244DLRG4?
For technical support, including 74LVTH162244DLRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH162244DLRG4 requirements.
6.How does Aetrix verify that 74LVTH162244DLRG4 is sourced from the original manufacturer or authorized distributors?
All 74LVTH162244DLRG4 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 74LVTH162244DLRG4 meets industry standards.
7.What is the process for return or replacement of 74LVTH162244DLRG4?
All 74LVTH162244DLRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH162244DLRG4, 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 74LVTH162244DLRG4 part is unused and in its original packaging.
Return procedure for 74LVTH162244DLRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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