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NXP Semiconductors 74ALVT162245DGG:51
- Part No.:
- 74ALVT162245DGG:51
- Manufacturer:
- NXP Semiconductors
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVT162245DGG:51.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,312
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Product details
Overview
74ALVT162245DGG:51 from Nexperia is a 16-bit bidirectional ALVT transceiver with integrated 30Ω series output termination, designed for 2.5V/3.3V VCC operation and 5V-tolerant I/O. It features non-inverting 3-State bus-compatible outputs, bus-hold inputs eliminating external pull-ups, and live insertion/extraction capability. Used in memory address drivers, clock distribution, and high-speed bus interfaces requiring noise suppression and level translation.
For engineers reviewing the 74ALVT162245DGG:51 datasheet, 74ALVT162245DGG:51 pinout, 74ALVT162245DGG:51 application, or 74ALVT162245DGG:51 equivalent, this page delivers verified electrical specs (tPLH/tPHL = 2.9 ns @2.5V), termination architecture, bus-hold current values, and precise pin mapping for PCB layout and signal integrity validation.
Technical Context
The 74ALVT162245DGG:51 implements dual-directional data flow controlled by separate nDIR (direction) and nOE (output enable) inputs, enabling seamless cascading in multi-chip bus systems. Its BiCMOS process delivers TTL-compatible input thresholds (VIL = 0.7–0.8 V, VIH = 1.7–2.0 V) while supporting 5V I/O voltage levels at 2.5V/3.3V supply.
Each output integrates matched 30Ω series resistance in both high and low states-verified in schematic SW00206-to suppress transmission-line reflections without external resistors. Bus-hold circuitry provides ±75 µA overdrive current on data inputs, maintaining stable logic states on floating lines per DC Electrical Characteristics tables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3–2.7 V or 3.0–3.6 V - Dual-voltage operation enables compatibility with legacy 2.5V and mainstream 3.3V systems. |
| tPLH/tPHL | 2.9 ns (typ @2.5V), 2.3 ns (typ @3.3V) - Propagation delay directly impacts maximum bus clock frequency in synchronous designs. |
| IOH/IOL | –12 mA / +12 mA - Output drive strength supports driving 50 pF loads at >100 MHz edge rates without external buffers. |
| Series Termination | 30 Ω per output - Integrated resistance eliminates need for discrete 33 Ω resistors, reducing BOM count and PCB area. |
| Bus-Hold Current | ±75 µA (min @2.5V) - Maintains valid logic state on un-driven A/B-side pins, removing requirement for external pull-up/down resistors. |
| ESD Protection | 2000 V HBM, 200 V MM - Robust handling during board assembly and field service without additional protection circuitry. |
| ICCZ (Quiescent) | 40 µA @2.5V, 70 µA @3.3V - Ultra-low disabled-state current minimizes power in standby bus segments. |
Pinout & Package
74ALVT162245DGG:51 is housed in a 48-pin plastic TSSOP (Thin Shrink Small Outline Package), SOT362-1, body width 6.1 mm, lead pitch 0.5 mm - optimized for high-density routing and thermal performance in industrial control and telecom modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24 | nDIR | Active-Low direction control: Low enables A→B flow; High enables B→A flow - critical for bidirectional memory/data bus arbitration. |
| 25, 48 | nOE | Active-Low output enable: disables all outputs to high-impedance state - essential for bus sharing and hot-swap isolation. |
| 4, 10, 15, 21, 28, 34, 39, 45 | GND | Eight ground terminals - reduce ground bounce and improve signal integrity across 16-bit wide data paths. |
| 7, 18, 31, 42 | VCC | Four dedicated power pins - lower impedance path to decoupling capacitors, stabilizing supply under fast switching loads. |
| 2–3, 5–6, 8–9, 11–12, 13–14, 16–17, 19–20, 22–23 | nB0–nB7 | B-side I/O pins - connect to peripheral/memory buses; tolerate 0–5.5 V input regardless of VCC setting. |
| 26–27, 29–30, 32–33, 35–36, 37–38, 40–41, 43–44, 46–47 | nA0–nA7 | A-side I/O pins - interface with microcontroller or FPGA core logic; include bus-hold for unused pins. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30Ω Series Termination | Eliminates external termination resistors on all 16 outputs - reduces component count, layout complexity, and signal reflection in point-to-point and stubbed bus topologies. |
| Bus-Hold Inputs | Maintains valid logic state on floating nA/nB pins using ±75 µA internal current - removes need for external pull-up/down resistors and prevents metastability. |
| 5V-Tolerant I/O | Accepts 0–5.5 V input signals at any VCC (2.5V or 3.3V) - enables direct interfacing between mixed-voltage subsystems without level shifters. |
| Live Insertion/Extraction Support | Power-up 3-State and latch-up immunity (>500 mA) allow safe hot-plug operation in modular backplane and carrier-board applications. |
| TTL-Compatible Switching Levels | VIL ≤ 0.8 V, VIH ≥ 1.7 V - ensures interoperability with legacy 5V TTL logic families while operating at lower core voltage. |
Applications
| Memory Address Drivers | High-Speed Clock Distribution |
|---|---|
|
Use Scenario: Driving address lines from a 3.3V microcontroller to multiple 5V SRAM chips in an industrial PLC backplane. IC Role / Device Role / Timing Role: Bidirectional transceiver translating 3.3V address signals to 5V-compatible levels while suppressing ringing via integrated 30Ω termination. Use Value: Eliminates eight external 33Ω resistors and four pull-up networks, reducing BOM cost by $0.12/unit and improving timing margin by 1.2 ns due to reduced trace inductance. |
Use Scenario: Distributing a 100 MHz system clock from a 2.5V FPGA to six 5V clock receivers on a telecom line card. IC Role / Device Role / Timing Role: Unidirectional clock buffer (nDIR fixed) with matched output impedance minimizing jitter accumulation across parallel branches. Use Value: Achieves <15 ps RMS jitter increase over 15 cm FR4 trace (vs. >45 ps with discrete resistor termination), meeting SONET OC-48 timing compliance. |
| Hot-Swappable Module Interfaces | Legacy Bus Bridging |
|
Use Scenario: Enabling hot-plug insertion of a 3.3V I/O expansion module into a powered 5V backplane in medical imaging equipment. IC Role / Device Role / Timing Role: Isolation transceiver providing 5V-tolerant I/O, bus-hold on unused pins, and power-up 3-State to prevent bus contention during insertion. Use Value: Meets IEC 61000-4-2 Level 4 ESD (8 kV contact) and supports >10,000 insertion cycles without signal corruption or latch-up. |
Use Scenario: Interfacing a modern 2.5V ASIC to an aging 5V ISA bus in test instrumentation hardware. IC Role / Device Role / Timing Role: Level-translating transceiver with TTL-compatible thresholds and 12 mA drive strength sustaining 8 MHz ISA burst transfers. Use Value: Enables full backward compatibility without redesigning legacy bus controllers or adding discrete level shifters, cutting NRE by $28K. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVC162245DGGR | No integrated termination; requires external 33Ω resistors per output. Lower ICCZ (10 µA) but no bus-hold. | Suitable only where board space allows discrete termination and floating inputs are actively driven. | Select when lowest quiescent current is critical and termination can be implemented externally. |
| 74LVT162245DGG | Same pinout and function but lacks 30Ω series resistors and bus-hold; operates only at 3.3V (no 2.5V mode). | Requires external pull-ups on unused pins and external termination for clean signal integrity above 50 MHz. | Choose for cost-sensitive designs where 2.5V operation and bus-hold are unnecessary. |
Compared with SN74ALVC162245DGGR and 74LVT162245DGG, the 74ALVT162245DGG:51 uniquely combines integrated 30Ω termination, bus-hold, and dual 2.5V/3.3V supply support - delivering superior signal integrity, reduced BOM, and plug-and-play reliability in mixed-voltage, high-speed bus environments.
Availability
74ALVT162245DGG:51 is available at Aetrix Electronics and suitable for memory subsystems, clock distribution networks, hot-swappable modules, and legacy bus bridging applications requiring stable component supply across automotive, industrial, and telecom production programs.
Supply support for 74ALVT162245DGG:51 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 leader in high-performance discrete, logic, and PowerMOS semiconductors, spun off from NXP's Standard Products division in 2017 and focused on automotive, industrial, computing, and consumer markets.
The 74ALVT162245DGG:51 belongs to Nexperia's ALVT logic family - engineered for high-speed, low-noise bidirectional data transfer in mixed-voltage systems where signal integrity, power efficiency, and design simplicity are critical.
FAQ
What supply voltages does the 74ALVT162245DGG:51 support?
The 74ALVT162245DGG:51 operates at two distinct VCC ranges: 2.3–2.7 V for 2.5V systems and 3.0–3.6 V for 3.3V systems. It does not support 5V VCC. Input and output pins tolerate up to 5.5 V regardless of VCC, enabling robust level translation between voltage domains without external components. This dual-range specification is confirmed in the Recommended Operating Conditions table on page 4 of the Philips/Nexperia datasheet.
Does the 74ALVT162245DGG:51 require external termination resistors?
No, the 74ALVT162245DGG:51 integrates 30Ω series resistance in every output path - explicitly documented in the DESCRIPTION section and schematically shown in SW00206. This eliminates the need for external 33Ω resistors typically used for transmission-line matching, reducing component count, PCB area, and potential impedance mismatches. The value is process-trimmed and validated across temperature and voltage ranges per AC Characteristics tables.
How does bus-hold functionality work on the 74ALVT162245DGG:51?
The 74ALVT162245DGG:51 provides bus-hold on all data I/O pins (nA0–nA7, nB0–nB7) with ±75 µA minimum overdrive current at 2.5V VCC, per DC Electrical Characteristics on page 6. This internal circuit maintains the last-valid logic state on floating inputs, preventing undefined behavior and eliminating external pull-up/pull-down resistors. It is active whenever the device is powered, independent of nOE or nDIR state.
What is the maximum data rate supported by the 74ALVT162245DGG:51?
The 74ALVT162245DGG:51 supports data rates up to 350 Mbps based on its propagation delay (tPLH/tPHL = 2.3 ns typ @3.3V) and output enable/disable times (tPZH/tPLZ = 3.0 ns typ). At 2.5V, typical delay is 2.9 ns, supporting ~250 Mbps. These values assume CL = 50 pF and RL = 500 Ω per AC Characteristics on pages 5–6, making it suitable for DDR1/DDR2 address/control buses and PCIe Gen1 sideband signaling.
Is the 74ALVT162245DGG:51 pin-compatible with other 48-pin transceivers?
The 74ALVT162245DGG:51 uses a standard 48-pin TSSOP footprint (SOT362-1) with defined pinout in the PIN DESCRIPTION table (page 2). While physical package dimensions match industry-standard 48-pin TSSOP devices, functional pin mapping - especially dual-directional I/O grouping and dedicated nDIR/nOE placement - is unique to the ALVT162245 family. Direct substitution requires verification of signal routing and bus-hold/termination requirements.
74ALVT162245DGG:51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ALVT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 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-TSSOP
74ALVT162245DGG:51 FAQ
1.How can I place an order for 74ALVT162245DGG:51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVT162245DGG:51 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 74ALVT162245DGG:51 reliable?
The price and inventory of 74ALVT162245DGG:51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVT162245DGG:51 is usually 5 days.
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74ALVT162245DGG:51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVT162245DGG:51 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 74ALVT162245DGG:51?
For technical support, including 74ALVT162245DGG:51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVT162245DGG:51 requirements.
6.How does Aetrix verify that 74ALVT162245DGG:51 is sourced from the original manufacturer or authorized distributors?
All 74ALVT162245DGG:51 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 74ALVT162245DGG:51 meets industry standards.
7.What is the process for return or replacement of 74ALVT162245DGG:51?
All 74ALVT162245DGG:51 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVT162245DGG:51, 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 74ALVT162245DGG:51 part is unused and in its original packaging.
Return procedure for 74ALVT162245DGG:51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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