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Texas Instruments SN74LVTH162244DL
- Part No.:
- SN74LVTH162244DL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVTH162244DL.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:374
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Product details
Overview
SN74LVTH162244DL from Texas Instruments is a 3.3-V ABT 16-bit buffer/driver with 3-state outputs in a 48-pin SSOP (DL) package, supporting mixed-mode 5-V/3.3-V interfacing, bus-hold inputs, and hot-insertion capability. It delivers ±12 mA drive strength per output, features integrated 22-Ω series resistors to suppress overshoot/undershoot, and operates across –40°C to 85°C.
For engineers reviewing the SN74LVTH162244DL datasheet, SN74LVTH162244DL pinout, SN74LVTH162244DL application, or SN74LVTH162244DL equivalent, key selection considerations include its 3-state control architecture, Ioff-enabled hot-swap support, bus-hold input retention, TTL-compatible 5-V input tolerance at 3.3-V VCC, and DL-package thermal performance (θJA = 63°C/W).
Technical Context
The SN74LVTH162244DL implements four independent 4-bit noninverting buffers, each with an active-low 3-state output-enable (OE) input. Its ABT (Advanced BiCMOS Technology) core enables TTL-level input recognition (VIH = 2 V, VIL = 0.8 V) while operating from a 2.7–3.6 V supply.
Each output includes built-in 22-Ω series termination for controlled edge rates and reduced signal integrity issues; bus-hold circuitry maintains valid logic states on undriven inputs without external resistors; and Ioff protection disables outputs during power-down to prevent backflow current in hot-insertion systems.
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 - sufficient to directly drive standard TTL loads or terminate stubs in point-to-point buses. |
| VIH/VIL | 2.0 V / 0.8 V - ensures reliable recognition of 5-V TTL logic levels while powered at 3.3 V. |
| tPLH/tPHL | 3.4 ns (typ) at VCC = 3.3 V - enables high-speed data buffering in sub-10 ns timing-critical paths. |
| Bus-Hold Current | ±75 µA - actively holds floating inputs at last-valid state, eliminating need for external pullup/pulldown resistors. |
| Ioff | ±100 µA - prevents damaging current flow when device is powered off but system bus remains live. |
| θJA | 63°C/W - thermal resistance specific to DL package, critical for power dissipation planning in dense PCB layouts. |
Pinout & Package
SN74LVTH162244DL uses a 48-pin SSOP (Shrink Small Outline Package), DL variant, with 0.5 mm lead pitch, 12.6 mm × 6.2 mm body size, and 1.2 mm max height. Pin 1 is located at top-left corner with beveled corner marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable | Individually controls 4-bit groups (Y1–Y4); all must be low for corresponding outputs to drive. |
| 1A1–1A4, ..., 4A1–4A4 | Data inputs | 16 total inputs grouped into four 4-bit channels; bus-hold enabled on all. |
| 1Y1–1Y4, ..., 4Y1–4Y4 | True buffered outputs | 16 true outputs with integrated 22-Ω series resistors; no external termination required. |
| VCC (Pins 7, 21, 34, 48) | Power supply | Distributed VCC pins minimize switching noise and improve PSRR across wideband operation. |
| GND (Pins 4, 10, 15, 27, 32, 37, 43) | Ground reference | Seven GND pins provide low-inductance return paths and reduce ground bounce (VOLP < 0.8 V). |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage interface | Accepts 5-V TTL inputs while powered at 3.3 V - enables seamless bridging between legacy 5-V and modern 3.3-V subsystems. |
| Integrated 22-Ω output series resistors | Eliminates need for discrete termination components, reducing BOM count and PCB area in high-speed digital interfaces. |
| Hot-insertion support via Ioff and power-up 3-state | Prevents backdrive damage and bus contention during live board insertion - essential for modular backplane and hot-swap systems. |
| Bus-hold on all data inputs | Maintains stable logic state on unused or unterminated inputs - removes dependency on external biasing networks. |
| Flow-through pinout architecture | Input and output pins arranged to allow straight PCB trace routing - reduces layer count and crosstalk in dense interconnects. |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module Bus Extender |
|---|---|
Use Scenario: Interfacing 5-V sensor modules to a 3.3-V microcontroller-based PLC CPU board with shared backplane wiring. IC Role / Device Role / Timing Role: Level-shifting 16-bit parallel status/control bus while maintaining signal integrity and preventing bus contention during module hot-swap. Use Value: Eliminates discrete level shifters and termination resistors; bus-hold prevents floating inputs during partial module removal; Ioff protects CPU during insertion. | Use Scenario: Extending CAN or LIN controller GPIOs to drive multiple solenoids, relays, and LED indicators across a vehicle's body domain. IC Role / Device Role / Timing Role: Buffering and driving high-current digital control signals from low-drive MCU pins to higher-capacitance loads. Use Value: ±12 mA per output drives typical automotive loads directly; distributed VCC/GND pins suppress EMI in noisy under-hood environments. |
| Test Equipment Digital Pattern Generator | Network Switch Management Interface |
Use Scenario: Generating synchronized 16-bit stimulus patterns for ASIC validation using FPGA-controlled pattern memory. IC Role / Device Role / Timing Role: Output buffering stage between FPGA I/O banks and DUT test points, ensuring clean edges and impedance-matched drive. Use Value: Built-in 22-Ω resistors match typical 50-Ω PCB traces; tPLH/tPHL ≤ 4.8 ns supports >100 MHz pattern rates with deterministic timing. | Use Scenario: Isolating and buffering management bus signals (e.g., SMBus, JTAG, or custom debug lines) between switch ASIC and service processor. IC Role / Device Role / Timing Role: Signal isolation and drive strengthening for multi-drop management buses subject to variable capacitive loading. Use Value: Bus-hold retains last-known state during bus arbitration gaps; 3-state control allows dynamic bus sharing without hardware switches. |
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 |
|---|---|---|---|
| SN74LVC162244ADGGR | LVC family: lower drive (±24 mA), no bus-hold, no integrated series resistors, 1.65–3.6 V VCC range. | Suitable for cost-sensitive, lower-noise applications where external termination and pullups are acceptable. | Choose when higher drive and wider VCC range are needed, but bus-hold and built-in termination are not required. |
| SN74ALVCH162244DGGR | ALVCH family: 2.3–3.6 V VCC, ±24 mA drive, no bus-hold, no integrated resistors, faster propagation (tPD ≈ 2.8 ns). | Better for high-speed, low-voltage-only systems requiring minimal propagation delay and higher current. | Choose when operating strictly at 2.5 V or 3.3 V with aggressive timing budgets, and external termination is preferred. |
Compared with SN74LVC162244ADGGR and SN74ALVCH162244DGGR, the SN74LVTH162244DL uniquely combines 5-V-tolerant inputs, bus-hold, integrated 22-Ω resistors, and Ioff - making it the only option among the three qualified for mixed-voltage hot-swap backplanes without supplemental circuitry.
Availability
SN74LVTH162244DL is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74LVTH162244DL 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 connectivity solutions for industrial, automotive, and communications markets.
The SN74LVTH162244DL belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically for robust, mixed-voltage, hot-pluggable digital interconnects in mission-critical systems.
FAQ
What is the maximum operating temperature range for the SN74LVTH162244DL?
The SN74LVTH162244DL is rated for operation from –40°C to +85°C ambient temperature. This commercial-grade specification aligns with its SSOP (DL) package qualification and is explicitly defined in the Recommended Operating Conditions table of the official datasheet. Operation outside this range may result in parametric degradation or functional failure.
Does the SN74LVTH162244DL support 5-V tolerant inputs when powered at 3.3 V?
Yes, the SN74LVTH162244DL supports 5-V tolerant inputs at VCC = 3.3 V. Its VI input voltage rating extends to 5.5 V, and its VIH/VIL thresholds (2.0 V / 0.8 V) are designed to reliably recognize standard TTL logic levels. This mixed-mode capability is a defining feature of the LVTH family and is confirmed in both the Functional Description and Absolute Maximum Ratings sections.
How many independent 3-state control inputs does the SN74LVTH162244DL have?
The SN74LVTH162244DL has four independent active-low 3-state output-enable inputs: 1OE, 2OE, 3OE, and 4OE. Each controls a dedicated 4-bit output group (Y1–Y4), enabling granular bus partitioning. This architecture is clearly shown in the Logic Diagram, Pin Assignments, and Function Table of the SN74LVTH162244DL datasheet.
Is bus-hold functionality enabled on all input pins of the SN74LVTH162244DL?
Yes, bus-hold circuitry is active on all 16 data input pins (1A1–4A4) of the SN74LVTH162244DL. The datasheet explicitly states "Active bus-hold circuitry holds unused or undriven inputs at a valid logic state" and specifies II(hold) = ±75 µA for data inputs. No configuration or external components are required to activate this feature.
What is the thermal resistance (θJA) of the SN74LVTH162244DL in its DL package?
The junction-to-ambient thermal resistance (θJA) of the SN74LVTH162244DL in the DL (SSOP) package is 63°C/W, as specified in the Absolute Maximum Ratings table. This value is measured under JEDEC-standard conditions and is critical for calculating junction temperature rise under load - especially important given the device's 16-channel switching activity and distributed power dissipation profile.
SN74LVTH162244DL 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:
- 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
SN74LVTH162244DL FAQ
1.How can I place an order for SN74LVTH162244DL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH162244DL 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 SN74LVTH162244DL reliable?
The price and inventory of SN74LVTH162244DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH162244DL is usually 5 days.
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Once your SN74LVTH162244DL 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 SN74LVTH162244DL?
For technical support, including SN74LVTH162244DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH162244DL requirements.
6.How does Aetrix verify that SN74LVTH162244DL is sourced from the original manufacturer or authorized distributors?
All SN74LVTH162244DL 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 SN74LVTH162244DL meets industry standards.
7.What is the process for return or replacement of SN74LVTH162244DL?
All SN74LVTH162244DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH162244DL, 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 SN74LVTH162244DL part is unused and in its original packaging.
Return procedure for SN74LVTH162244DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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