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Texas Instruments 74LVTH162244ZQLR
- Part No.:
- 74LVTH162244ZQLR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
74LVTH162244ZQLR.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,657
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Product details
Overview
74LVTH162244ZQLR from Texas Instruments is a 3.3-V ABT 16-bit buffer/driver with 3-state outputs in a 56-ball VFBGA (ZQL) package, supporting mixed-mode 5-V/3.3-V interfacing, sourcing/sinking ±12 mA per output, and featuring integrated 22-Ω series output resistors for overshoot/undershoot suppression - used in high-speed bus interface applications between legacy 5-V logic and modern low-voltage systems.
For engineers reviewing the 74LVTH162244ZQLR datasheet, 74LVTH162244ZQLR pinout, 74LVTH162244ZQLR application, or 74LVTH162244ZQLR equivalent, key selection considerations include its −55°C to +125°C extended temperature rating, Ioff-enabled hot-insertion support, bus-hold inputs eliminating external biasing, distributed VCC/GND pins for noise reduction, and flow-through pinout optimizing PCB layout in space-constrained industrial and aerospace designs.
Technical Context
The 74LVTH162244ZQLR implements four independent 4-bit noninverting buffers, each with active-low 3-state enable (OE), enabling flexible partitioning as one 16-bit, two 8-bit, or four 4-bit drivers. Its ABT (Advanced BiCMOS Technology) architecture integrates TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) while operating at 3.3-V VCC, allowing direct connection to 5-V signal sources without level shifters.
It features power-up/power-down 3-state control and Ioff circuitry that disables outputs when VCC = 0 V, preventing backdrive current during hot insertion. Bus-hold circuitry maintains valid logic states on undriven inputs, and distributed VCC/GND ball placement minimizes simultaneous switching noise in high-density layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 2.7 V to 3.6 V - supports unregulated battery operation down to 2.7 V without functional degradation |
| Input Voltage Range | −0.5 V to 5.5 V - enables robust 5-V-tolerant inputs with 3.3-V supply |
| Output Drive Strength | ±12 mA per Y pin - sufficient to drive standard TTL loads and moderate capacitive buses |
| Propagation Delay (tPLH/tPHL) | 1.1 ns to 4.6 ns @ VCC = 3.3 V - ensures sub-5-ns timing for high-speed address/data buffering |
| Bus-Hold Input Current | ±75 µA typical - actively holds floating inputs without external pullup/pulldown resistors |
| Ioff Leakage | ±100 µA @ VCC = 0 V - prevents damaging backflow current during hot-swap or partial power-down |
| Operating Temperature | −55°C to +125°C - qualified for extended-temperature industrial, defense, and aerospace environments |
Pinout & Package
74LVTH162244ZQLR uses a 56-ball Very Thin Fine-Pitch Ball Grid Array (VFBGA) package designated ZQL (Pb-free), measuring 7.0 mm × 4.5 mm × 0.9 mm (max height), with JEDEC-standard footprint and solder mask-defined pads optimized for automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable | Independent control of each 4-bit buffer group; asserted low enables corresponding Y outputs |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data inputs | 16 total TTL-compatible inputs with bus-hold; no external biasing required |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | True buffered outputs | 16 outputs with integrated 22-Ω series resistors - eliminates need for discrete termination |
| VCC (Balls C3, C4, H3, H4, G7, G8, J7, J8) | Power supply | Distributed across 8 balls to reduce IR drop and high-frequency impedance in high-speed switching |
| GND (Balls B3, B4, D3, D4, F7, F8, H7, H8, J3, J4) | Ground reference | 10 dedicated ground balls minimize ground bounce (VOLP < 0.8 V) and improve signal integrity |
| NC (Balls A2–A5, K2, K5) | No internal connection | Unbonded pads - must be left unconnected or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage interface | 5-V-tolerant inputs and outputs operate reliably with 3.3-V VCC - eliminates external level translators in hybrid-voltage systems |
| Integrated 22-Ω output series resistors | Reduces overshoot/undershoot without discrete components - simplifies layout and improves signal fidelity on FR4 PCBs |
| Hot-insertion support | Ioff and power-up 3-state ensure safe insertion into live backplanes - critical for modular avionics and telecom line cards |
| Flow-through pinout architecture | Input and output balls arranged linearly across opposite sides - enables straight trace routing and minimizes layer count |
| Distributed VCC/GND ball placement | 8 VCC and 10 GND balls interleaved across the array - lowers power delivery impedance and suppresses simultaneous switching noise |
Applications
| Industrial PLC Backplane Interface | Aerospace Avionics Data Bus |
|---|---|
Use Scenario: Interfacing 5-V sensor modules and legacy I/O cards to a 3.3-V FPGA-based controller in a ruggedized programmable logic controller chassis. IC Role / Device Role / Timing Role: 16-bit bidirectional buffer isolating voltage domains while preserving signal timing integrity across long backplane traces. Use Value: Eliminates need for discrete level shifters and termination resistors, reducing BOM count and improving thermal margin in sealed enclosures. |
Use Scenario: Driving ARINC 429-compatible data lines from a radiation-hardened microcontroller in a flight control computer. IC Role / Device Role / Timing Role: High-reliability 3-state driver providing precise edge control and hot-swap capability during in-flight module replacement. Use Value: Extended −55°C to +125°C operation and Ioff protection ensure uninterrupted communication during extreme thermal cycling and maintenance events. |
| Defense Radar Signal Processing | Test Equipment Digital Pattern Generator |
Use Scenario: Buffering high-speed digital control signals between a 5-V DAC and a 3.3-V FPGA in an airborne radar beamformer module. IC Role / Device Role / Timing Role: Low-skew, low-jitter buffer with sub-5-ns propagation delay ensuring deterministic timing alignment across parallel channels. Use Value: Integrated 22-Ω resistors suppress reflections on 50-Ω transmission lines, maintaining signal fidelity up to 100 MHz without added components. |
Use Scenario: Generating synchronized multi-channel digital stimulus waveforms in automated test equipment requiring precise channel-to-channel skew control. IC Role / Device Role / Timing Role: Four independent 4-bit buffers enabling isolated enable/disable of waveform segments without cross-talk. Use Value: Bus-hold inputs prevent floating states during pattern transitions, ensuring glitch-free output activation and repeatable test results. |
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 |
|---|---|---|---|
| SN74LVTH162244DLR | SSOP-48 package (15.9 mm × 7.5 mm); rated for −40°C to +85°C only | Suitable for commercial-grade test fixtures and lab equipment where extended temperature is not required | Select for cost-sensitive, non-military applications with ample board area and standard reflow profiles |
| SN74LVTH162244DGGR | TSSOP-48 package (12.5 mm × 6.1 mm); same −40°C to +85°C rating; slightly higher θJA (42°C/W vs. ZQL's 42°C/W) | Better suited for compact consumer electronics or industrial controllers with tighter space constraints than SSOP but less demanding than aerospace | Choose when footprint reduction is prioritized over extended temperature range and when leaded assembly is acceptable |
Compared with SN74LVTH162244DLR and SN74LVTH162244DGGR, the 74LVTH162244ZQLR provides unique value through its −55°C to +125°C qualification, Pb-free VFBGA packaging for high-density interconnects, and identical thermal performance (θJA = 42°C/W) in a significantly smaller footprint - making it the sole option for mission-critical embedded systems requiring both environmental ruggedness and miniaturization.
Availability
74LVTH162244ZQLR is available at Aetrix Electronics and suitable for industrial automation, aerospace avionics, and defense radar systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVTH162244ZQLR 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 high-reliability logic solutions, with decades of heritage in military-qualified and space-grade component development.
The 74LVTH162244ZQLR belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically for mixed-voltage system integration in harsh-environment applications where signal integrity, thermal resilience, and long-term supply assurance are mandatory.
FAQ
What is the maximum operating temperature range for the 74LVTH162244ZQLR?
The 74LVTH162244ZQLR is fully specified for operation from −55°C to +125°C, meeting extended-temperature requirements for aerospace, defense, and industrial applications. This rating is validated per TI's production test flow for the ZQL package variant and is distinct from the commercial −40°C to +85°C versions like the DGG or DL packages. The 74LVTH162244ZQLR maintains full electrical compliance across this entire range, including Ioff, bus-hold, and 3-state behavior.
Does the 74LVTH162244ZQLR require external pullup or pulldown resistors on its inputs?
No, the 74LVTH162244ZQLR includes active bus-hold circuitry on all data inputs (A1–A16), which maintains a valid logic state when inputs are floating or undriven. TI explicitly advises against using external pullup or pulldown resistors with bus-hold enabled, as they may interfere with the internal hold current (±75 µA typical). This feature eliminates BOM items and layout complexity in systems with unterminated stubs or infrequently driven control lines.
How does the 74LVTH162244ZQLR support hot-insertion in live backplane systems?
The 74LVTH162244ZQLR supports hot-insertion via dual mechanisms: Ioff circuitry disables outputs when VCC = 0 V, preventing backdrive current into powered-down sections, and power-up 3-state ensures outputs remain in high-impedance until VCC stabilizes above 1.5 V. These features are production-tested per TI's specifications and allow safe insertion into energized 5-V/3.3-V hybrid backplanes without disrupting adjacent modules - a requirement verified in MIL-STD-1399 and DO-254 avionics designs.
What is the purpose of the integrated 22-Ω series resistors on the 74LVTH162244ZQLR outputs?
The 74LVTH162244ZQLR integrates 22-Ω series resistors on all 16 output pins (Y1–Y16) to dampen signal reflections and suppress overshoot/undershoot on transmission lines. This eliminates the need for discrete 22-Ω SMT resistors in series with each output, reducing PCB real estate, assembly steps, and potential impedance mismatches. Measured VOLP (output ground bounce) remains below 0.8 V at VCC = 3.3 V, confirming effective noise suppression in high-speed switching scenarios.
Can the 74LVTH162244ZQLR be used to interface 5-V logic signals directly to a 3.3-V FPGA?
Yes, the 74LVTH162244ZQLR is explicitly designed for this mixed-mode interface: its inputs accept 0 V to 5.5 V signals while operating from a 3.3-V supply, and its outputs drive 3.3-V logic levels compatible with FPGA I/O banks configured for LVTTL or LVCMOS33 standards. The device meets VIH = 2 V and VIL = 0.8 V thresholds under all recommended conditions, ensuring reliable detection of 5-V TTL logic states without external level-shifting circuitry.
74LVTH162244ZQLR 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)
74LVTH162244ZQLR FAQ
1.How can I place an order for 74LVTH162244ZQLR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH162244ZQLR 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 74LVTH162244ZQLR reliable?
The price and inventory of 74LVTH162244ZQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH162244ZQLR is usually 5 days.
3.What payment methods are accepted for 74LVTH162244ZQLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVTH162244ZQLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVTH162244ZQLR?
74LVTH162244ZQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH162244ZQLR 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 74LVTH162244ZQLR?
For technical support, including 74LVTH162244ZQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH162244ZQLR requirements.
6.How does Aetrix verify that 74LVTH162244ZQLR is sourced from the original manufacturer or authorized distributors?
All 74LVTH162244ZQLR 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 74LVTH162244ZQLR meets industry standards.
7.What is the process for return or replacement of 74LVTH162244ZQLR?
All 74LVTH162244ZQLR units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH162244ZQLR, 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 74LVTH162244ZQLR part is unused and in its original packaging.
Return procedure for 74LVTH162244ZQLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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