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Texas Instruments SN74ALVTH162244VR
- Part No.:
- SN74ALVTH162244VR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ALVTH162244VR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,851
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Product details
Overview
SN74ALVTH162244VR from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 2.5-V/3.3-V operation and mixed-mode (5-V input-tolerant) interfacing. It features bus-hold circuitry on all data inputs, integrated 30-Ω output series resistors, auto 3-state detection, and operates from –40°C to 85°C in a 48-pin TVSOP (DGV) package.
For engineers reviewing the SN74ALVTH162244VR datasheet, SN74ALVTH162244VR pinout, SN74ALVTH162244VR application, or SN74ALVTH162244VR equivalent, key selection considerations include its 3.3-V-compatible 5-V-tolerant I/O, low ground bounce (<0.8 V), live-insertion support via power-off high-impedance, and flow-through pinout for PCB layout optimization.
Technical Context
This device implements four independent 4-bit noninverting buffers, each with active-low 3-state enable (OE). Its Advanced BiCMOS Technology (ABT) delivers low static power dissipation while supporting TTL-level signal translation between 5-V legacy systems and 2.5-V/3.3-V logic domains.
The architecture includes distributed VCC/GND pins to suppress high-speed switching noise, bus-hold circuitry eliminating external pullup/pulldown resistors, and output ports with built-in 30-Ω series termination to reduce overshoot/undershoot without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - supports dual-voltage system interfacing with stable operation across 2.5-V and 3.3-V rails |
| I/O Voltage Tolerance | Up to 5.5 V - enables direct connection to 5-V buses without level-shifting circuitry |
| Output Drive | ±12 mA - sufficient to drive standard CMOS/TTL loads and stubs in backplane or board-level interconnects |
| Propagation Delay | 1 ns to 3.3 ns (CL = 50 pF, VCC = 3.3 V) - ensures timing-critical data path integrity in high-speed digital systems |
| Bus-Hold Current | ±75 µA (VCC = 3 V) - actively maintains valid logic levels on floating inputs, preventing metastability |
| Power-Up Behavior | High-impedance state when VCC ≤ 1.2 V - prevents bus contention during power sequencing |
| Thermal Impedance θJA | 93°C/W (DGV package) - defines maximum junction temperature rise under specified PCB copper area conditions |
Pinout & Package
SN74ALVTH162244VR is housed in a 48-pin Thin Very Small-Outline Package (TVSOP, JEDEC MO-153, TI designation DGV), 7.7 mm × 4.4 mm × 1.2 mm max height, with 0.5-mm pitch gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable | Controls 4-bit group (1Y–4Y); low enables true output, high places outputs in high-Z |
| 1A1–4A4 (32 pins) | Data inputs | 32 total inputs grouped into four 4-bit channels; all feature bus-hold circuitry |
| 1Y1–4Y4 (32 pins) | True buffered outputs | 32 total outputs with integrated 30-Ω series resistance; support auto 3-state when VOUT > VCC + 0.5 V |
| VCC (pins 7, 18, 31, 42) | Supply voltage | Distributed power pins minimize simultaneous switching noise and improve PDN stability |
| GND (pins 4, 10, 15, 21, 27, 32, 37, 45) | Ground reference | Eight GND pins provide low-inductance return paths and enhance signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5-V-tolerant inputs/outputs with 2.3–3.6-V VCC - eliminates external level shifters in hybrid-voltage systems |
| Auto 3-state detection | Outputs automatically enter high-Z when VOUT exceeds VCC + 0.5 V - prevents bus contention during hot-swap or fault conditions |
| Integrated 30-Ω output series resistors | Eliminates need for discrete termination resistors - reduces BOM count and PCB area in high-speed routing |
| Live insertion support | Outputs disabled during power-off and high-Z during power-up/down - enables safe hot-plug capability in modular backplanes |
| Flow-through pinout | Input and output pins arranged on opposite sides of package - simplifies layer routing and minimizes trace crossovers |
Applications
| Industrial PLC Backplane Interface | Server Memory Buffer Subsystem |
|---|---|
Use Scenario: Interfacing 5-V legacy I/O modules to a 3.3-V programmable logic controller CPU bus. IC Role / Device Role / Timing Role: Level-translating 16-bit unidirectional data buffer with bus-hold protection against floating control lines. Use Value: Eliminates discrete level shifters and pullup resistors while ensuring deterministic logic states during module insertion/removal. | Use Scenario: Driving address/data lines from a 3.3-V memory controller to multiple DDR SDRAM banks operating at 2.5-V. IC Role / Device Role / Timing Role: Low-skew, low-noise 16-bit fanout buffer with controlled edge rates and on-die termination. Use Value: Reduces signal reflections and ground bounce (<0.8 V), enabling reliable 100+ MHz parallel bus operation without external RC networks. |
| Telecom Line Card Signal Conditioning | Automotive ADAS Sensor Hub Interface |
Use Scenario: Isolating and buffering control signals between a 3.3-V FPGA and 5-V analog front-end ASICs on a line card. IC Role / Device Role / Timing Role: 3-state-capable bidirectional signal conditioner with fast enable/disable timing (tPZL ≤ 3.3 ns). Use Value: Enables dynamic bus sharing among multiple peripherals while maintaining signal integrity across mixed-voltage domains. | Use Scenario: Aggregating sensor data from multiple 5-V analog sensors into a 3.3-V microcontroller-based domain controller. IC Role / Device Role / Timing Role: Robust input interface with ±200-V machine-model ESD protection and latch-up immunity (>250 mA per JESD17). Use Value: Provides system-level reliability in harsh automotive environments without requiring additional transient suppression 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 |
|---|---|---|---|
| SN74ALVCH162244GR | No bus-hold circuitry; lower ICC (0.05 mA typical vs. 0.07 mA); same pinout and voltage specs | Requires external pullup/pulldown resistors on unused inputs; less suitable for undriven or intermittently connected buses | Select when cost reduction is prioritized and bus-hold functionality is not required in the target design |
| SN74LVC162244ADGGR | 3.3-V only (no 5-V tolerance); higher IOL (24 mA); smaller 0.4-mm pitch VQFN package | Not compatible with 5-V signal sources; requires redesign for thermal and routing constraints due to QFN footprint | Select for space-constrained, single-rail 3.3-V systems where 5-V interoperability is unnecessary |
Compared with SN74ALVTH162244VR, SN74ALVCH162244GR removes bus-hold but retains identical pinout and voltage compatibility, whereas SN74LVC162244ADGGR trades 5-V tolerance for higher drive strength and a different package - both require explicit evaluation of input biasing and layout impact.
Availability
SN74ALVTH162244VR is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and automotive ADAS subsystems requiring stable component supply and long-term obsolescence management.
Supply support for SN74ALVTH162244VR 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 company specializing in analog, embedded processing, and connectivity technologies, with leadership in industrial, automotive, and communications markets.
The ALVTH family was engineered for mixed-voltage system interfacing - specifically to bridge legacy 5-V logic with emerging low-voltage digital subsystems while minimizing board-level complexity and improving signal integrity.
FAQ
What is the operating temperature range for SN74ALVTH162244VR?
The SN74ALVTH162244VR is characterized for operation from –40°C to 85°C, meeting industrial-grade environmental requirements. This range is explicitly defined in the recommended operating conditions section of the SCES074E datasheet and applies to all electrical and switching specifications under 2.5-V and 3.3-V VCC conditions. The SN74ALVTH162244VR does not support extended military or automotive AEC-Q100 temperature grades.
Does SN74ALVTH162244VR support live insertion in backplane applications?
Yes, SN74ALVTH162244VR supports live insertion through two key mechanisms: outputs are automatically disabled when VCC is off, and the device enters a high-impedance state during power-up and power-down (when VCC ≤ 1.2 V). This prevents bus contention and signal corruption during hot-swap events, making it suitable for modular telecom and industrial backplane designs.
How does the bus-hold circuitry function on SN74ALVTH162244VR inputs?
The bus-hold circuitry on SN74ALVTH162244VR actively maintains valid logic levels on unused or floating data inputs by sourcing or sinking ±75 µA (at VCC = 3 V) to hold VI near VIH min or VIL max. This eliminates the need for external pullup/pulldown resistors, reducing BOM count and PCB area while preventing undefined states that could cause downstream logic errors.
What is the significance of the "auto 3-state" feature in SN74ALVTH162244VR?
The auto 3-state feature in SN74ALVTH162244VR causes outputs to automatically enter high-impedance mode when the output voltage exceeds VCC + 0.5 V - for example, during overvoltage faults or when driven by another active source on a shared bus. This protects the device and prevents current conflict, enhancing system robustness without requiring external control logic.
Can SN74ALVTH162244VR be used with a 2.5-V supply rail?
Yes, SN74ALVTH162244VR is fully specified for 2.5-V ± 0.2-V operation, including all DC parameters (VOH/VOL, II, Ioff), AC timing (tPLH/tPHL ≤ 4.3 ns), and bus-hold behavior. The device's ABT process ensures stable performance across the full 2.3–3.6-V VCC range, making it suitable for dual-rail systems where both 2.5-V and 3.3-V supplies coexist.
SN74ALVTH162244VR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVTH
- Package/Case:
- 48-TFSOP (0.173", 4.40mm 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:
- 8mA, 12mA; 12mA, 12mA
- Voltage - Supply:
- 2.3V ~ 2.7V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TVSOP
SN74ALVTH162244VR FAQ
1.How can I place an order for SN74ALVTH162244VR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALVTH162244VR 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 SN74ALVTH162244VR reliable?
The price and inventory of SN74ALVTH162244VR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVTH162244VR is usually 5 days.
3.What payment methods are accepted for SN74ALVTH162244VR?
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4.How is shipping managed for SN74ALVTH162244VR?
SN74ALVTH162244VR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ALVTH162244VR 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 SN74ALVTH162244VR?
For technical support, including SN74ALVTH162244VR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVTH162244VR requirements.
6.How does Aetrix verify that SN74ALVTH162244VR is sourced from the original manufacturer or authorized distributors?
All SN74ALVTH162244VR 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 SN74ALVTH162244VR meets industry standards.
7.What is the process for return or replacement of SN74ALVTH162244VR?
All SN74ALVTH162244VR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVTH162244VR, 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 SN74ALVTH162244VR part is unused and in its original packaging.
Return procedure for SN74ALVTH162244VR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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