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NXP Semiconductors 74ALVT162245DGG112
- Part No.:
- 74ALVT162245DGG112
- Manufacturer:
- NXP Semiconductors
- Package:
- -
- Datasheet:
-
74ALVT162245DGG112.pdf
- Description:
- BUS TRANSCVR, ALVT SERIES, 8-BIT
- Quantity:
- Payment:
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Inventory:6,725
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Product details
Overview
74ALVT162245DGG112 from Nexperia is a 16-bit bidirectional bus transceiver with integrated 30 Ω series output termination resistors, 3-state outputs, dual direction control (1DIR/2DIR), and dual output enable (1OE/2OE). It operates from 2.3 V to 3.6 V, supports 5 V I/O tolerance, and delivers ±12 mA drive strength - used in high-speed backplane and memory interface buffering where on-die termination eliminates external resistors.
For engineers reviewing the 74ALVT162245DGG112 datasheet, 74ALVT162245DGG112 pinout, 74ALVT162245DGG112 application, or 74ALVT162245DGG112 equivalent, key selection considerations include its dual 8-bit configurable operation, bus-hold inputs eliminating pull-ups, IOFF partial power-down, and TSSOP48 package compatibility with dense PCB layouts.
Technical Context
The 74ALVT162245DGG112 implements a BiCMOS architecture enabling high-speed propagation (as low as 0.5 ns tPLH at 3.3 V) while maintaining TTL-level compatibility and 5 V overvoltage-tolerant inputs up to 5.5 V. Its two independent 8-bit sections allow flexible data flow control per bus segment.
Each output integrates a 30 Ω series resistor (verified schematic Fig. 3), enabling direct connection to 50 Ω transmission lines without external termination. Bus-hold circuitry on all data pins maintains valid logic states on unused inputs, and IOFF ensures minimal leakage (<±100 μA) when VCC = 0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.3 V to 3.6 V - enables interoperability across 2.5 V and 3.3 V system domains |
| Output Drive Strength | ±12 mA - sufficient to drive terminated 50 Ω lines without signal integrity degradation |
| Propagation Delay (tPLH) | 0.5 ns (typ) at 3.3 V - supports >200 MHz bus timing in point-to-point configurations |
| Input Voltage Tolerance | Up to 5.5 V - allows safe interfacing with legacy 5 V logic without level shifters |
| Bus-Hold Current | ±75 μA (min) at 3 V - actively retains logic state on floating data inputs, removing need for external pull resistors |
| Termination Resistance | 30 Ω (integrated series) - matches typical driver output impedance, reducing reflections on short traces |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial-grade embedded and communications equipment |
Pinout & Package
TSSOP48 package (SOT362-1), 6.1 mm body width, 48-pin plastic thin shrink small outline; lead pitch 0.5 mm, compliant with JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR (Pins 1, 24) | Direction control input | Active-HIGH logic selects data flow direction per 8-bit section (A→B or B→A) |
| 1OE, 2OE (Pins 48, 25) | Output enable input (active-LOW) | Asserting LOW enables corresponding 8-bit outputs; HIGH forces high-impedance OFF-state |
| 1A0–1A7 (Pins 47, 46, 44, 43, 41, 40, 38, 37) | Data I/O port A (Section 1) | Bidirectional interface for first 8-bit bus segment; internally terminated and bus-held |
| 1B0–1B7 (Pins 2, 3, 5, 6, 8, 9, 11, 12) | Data I/O port B (Section 1) | Complementary 8-bit bus segment; direction and enable controlled independently from Section 2 |
| 2A0–2A7 (Pins 36, 35, 33, 32, 30, 29, 27, 26) | Data I/O port A (Section 2) | Second independent 8-bit transceiver channel, identical electrical behavior to Section 1 |
| 2B0–2B7 (Pins 13, 14, 16, 17, 19, 20, 22, 23) | Data I/O port B (Section 2) | Paired with 2Ax for full 16-bit or split 8+8 operation under separate DIR/OE control |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four distributed supply pins reduce IR drop and improve noise immunity across wide bus |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight ground connections minimize ground bounce during simultaneous switching |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω series termination | Eliminates eight external resistors per section, saving PCB area and reducing BOM count in high-pin-count bus interfaces |
| Bus-hold on all data inputs | Maintains stable logic levels on unconnected or unterminated inputs, preventing metastability in hot-swap or partial-bus scenarios |
| IOFF partial power-down | Restricts leakage to ±100 μA when VCC = 0 V, enabling live insertion/extraction without damaging backplane or host system |
| 5 V tolerant inputs and 5 V I/O compatible | Interoperates directly with legacy 5 V peripherals and microcontrollers without voltage translation circuitry |
| Power-up 3-state | Outputs remain in high-impedance state until VCC stabilizes, preventing bus contention during power sequencing |
Applications
| Memory Interface Buffering | Backplane Data Routing |
|---|---|
Use Scenario: Isolating and driving address/data buses between DDR2 SDRAM controller and memory module in industrial PLCs. IC Role / Device Role / Timing Role: Bidirectional 16-bit transceiver providing level-shifted, terminated, and direction-controlled data path with sub-5 ns propagation. Use Value: Integrated 30 Ω termination ensures clean edge integrity on 10 cm routed traces; bus-hold prevents floating inputs during memory initialization sequences. |
Use Scenario: Interfacing FPGA-based packet processing unit to multi-slot carrier board with shared parallel control bus. IC Role / Device Role / Timing Role: Dual-section transceiver enabling independent enable/control of two 8-bit segments for slot-specific register access. Use Value: Independent 1OE/2OE and 1DIR/2DIR pins allow per-slot read/write arbitration without additional logic; IOFF supports hot-plug slot replacement. |
| Legacy System Integration | Test Equipment Signal Conditioning |
Use Scenario: Bridging 3.3 V ARM processor bus to 5 V ISA-compatible peripheral card in medical diagnostic hardware. IC Role / Device Role / Timing Role: Level-tolerant transceiver translating between mixed-voltage domains while preserving timing margins. Use Value: 5.5 V input tolerance and ±12 mA drive ensure robust communication with aging 5 V peripherals; no external level shifters required. |
Use Scenario: Driving calibrated digital stimulus signals from ATE pattern generator into DUT with controlled impedance trace. IC Role / Device Role / Timing Role: Precision-output buffer with matched 30 Ω source impedance minimizing reflections on 50 Ω coaxial interconnects. Use Value: On-die termination eliminates discrete resistor placement error and parasitic inductance, improving rise/fall time fidelity beyond 200 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVTH162245ZRGR | TI part in 48-pin VQFN (RGZ); same 30 Ω termination, but lacks bus-hold and IOFF | Requires external pull-ups on unused inputs; not suitable for live-insertion systems | Select when footprint flexibility and thermal performance outweigh bus-hold/IOFF requirements |
| 74LVT162245DGG | Nexperia variant without integrated 30 Ω resistors; otherwise identical pinout, voltage range, and drive strength | Needs eight external 30 Ω resistors per section; increases layout complexity and cost | Choose only if existing design uses discrete termination or requires lower quiescent current |
Compared with SN74ALVTH162245ZRGR and 74LVT162245DGG, the 74ALVT162245DGG112 uniquely combines on-die termination, bus-hold, and IOFF in a single TSSOP48 package - reducing component count, enhancing reliability in hot-swap environments, and simplifying impedance-matched routing.
Availability
74ALVT162245DGG112 is available at Aetrix Electronics and suitable for industrial control systems, test instrumentation, memory subsystems, and legacy interface bridging requiring stable component supply and long-term manufacturability.
Supply support for 74ALVT162245DGG112 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
Nexperia is a global semiconductor expert delivering high-performance, reliable logic, analog, and MOSFET solutions optimized for efficiency and miniaturization.
The 74ALVT162245DGG112 belongs to Nexperia's advanced ALVT logic family, engineered for high-speed, low-voltage bus interfacing in industrial and communications infrastructure where signal integrity and mixed-voltage compatibility are critical.
FAQ
What is the function of the 30 Ω termination resistors in the 74ALVT162245DGG112?
The 30 Ω series resistors integrated into each output of the 74ALVT162245DGG112 match typical CMOS driver output impedance, suppressing signal reflections on PCB traces routed to 50 Ω loads. This eliminates the need for eight external termination resistors per 8-bit section, reducing BOM cost and layout complexity while maintaining signal fidelity up to 200 MHz.
Does the 74ALVT162245DGG112 support hot-plug operation?
Yes, the 74ALVT162245DGG112 supports live insertion/extraction via its IOFF circuitry, which limits power-off leakage current to ±100 μA when VCC = 0 V. This prevents back-driving of powered systems and protects both the device and host backplane during hot-swap events in modular rack systems.
How does bus-hold functionality work on the 74ALVT162245DGG112?
Bus-hold circuitry on all data I/O pins of the 74ALVT162245DGG112 applies weak feedback current (±75 μA min at 3 V) to retain the last valid logic state when inputs float. This eliminates external pull-up/pull-down resistors in partially populated buses or during reset sequences, improving noise immunity and simplifying design for industrial I/O modules.
Can the 74ALVT162245DGG112 interface directly with 5 V logic systems?
Yes, the 74ALVT162245DGG112 features 5 V tolerant inputs rated to 5.5 V and is 5 V I/O compatible. Its outputs drive to valid TTL levels, allowing direct connection to 5 V microcontrollers, FPGAs, or peripheral ICs without level-shifting circuitry - verified across the full −40 °C to +85 °C operating range.
What is the significance of independent 1DIR/2DIR and 1OE/2OE controls in the 74ALVT162245DGG112?
Independent direction and enable controls allow the 74ALVT162245DGG112 to operate as two isolated 8-bit transceivers. For example, one section can transmit while the other receives, or each can serve separate bus segments - enabling flexible data routing in multi-processor systems, modular backplanes, or FPGA I/O expansion without external gating logic.
74ALVT162245DGG112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74ALVT162245DGG112 FAQ
1.How can I place an order for 74ALVT162245DGG112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVT162245DGG112 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 74ALVT162245DGG112 reliable?
The price and inventory of 74ALVT162245DGG112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVT162245DGG112 is usually 5 days.
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Once your 74ALVT162245DGG112 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 74ALVT162245DGG112?
For technical support, including 74ALVT162245DGG112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVT162245DGG112 requirements.
6.How does Aetrix verify that 74ALVT162245DGG112 is sourced from the original manufacturer or authorized distributors?
All 74ALVT162245DGG112 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 74ALVT162245DGG112 meets industry standards.
7.What is the process for return or replacement of 74ALVT162245DGG112?
All 74ALVT162245DGG112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVT162245DGG112, 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 74ALVT162245DGG112 part is unused and in its original packaging.
Return procedure for 74ALVT162245DGG112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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