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Nexperia USA Inc. 74LVTH16245BBX,518
- Part No.:
- 74LVTH16245BBX,518
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 60-XFQFN Dual Rows, Exposed Pad
- Datasheet:
-
74LVTH16245BBX,518.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 60HXQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,033
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Product details
Overview
74LVTH16245BBX,518 from Nexperia is a 3.3 V, 16-bit bidirectional bus transceiver with dual 3-state control (1OE/2OE) and dual direction control (1DIR/2DIR), supporting two independent 8-bit data paths or one unified 16-bit path. It features bus hold inputs (eliminating external pull-ups), ±64 mA output drive, 5.5 V overvoltage-tolerant inputs, and operates from -40 °C to +85 °C. It is used in high-speed backplane and motherboard bus interface applications requiring level translation between 3.3 V logic and legacy 5 V systems.
For engineers reviewing the 74LVTH16245BBX,518 datasheet, 74LVTH16245BBX,518 pinout, 74LVTH16245BBX,518 application, or 74LVTH16245BBX,518 equivalent, key selection criteria include its dual 8-bit configurable operation, bus hold functionality, 3.3 V supply with 5 V input tolerance, and TSSOP48 package compatibility with high-density PCB layouts.
Technical Context
This BiCMOS transceiver implements two independent 8-bit bidirectional data channels, each controlled by dedicated OE and DIR signals. Its bus hold circuitry actively maintains valid logic states on unused inputs without external resistors, reducing BOM count and board space.
It supports live insertion/extraction and includes IOFF partial power-down protection, ensuring no current flows when VCC = 0 V and I/O pins are at 0–4.5 V. Propagation delays are as low as 1.0 ns (tPLH/tPHL) at 3.3 V, enabling reliable operation in systems with >200 MHz bus timing margins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - Enables stable operation across industrial-grade 3.3 V rails with ±0.3 V tolerance. |
| Input Voltage Range | 0 V to 5.5 V - Allows direct interfacing with 5 V TTL systems without level shifters. |
| Output Drive | +64 mA sink / -32 mA source - Sustains robust signal integrity driving heavy capacitive loads or multiple CMOS inputs. |
| Propagation Delay | 1.0–3.3 ns (tPLH/tPHL) - Supports high-speed bus cycles up to 300+ MHz with margin for setup/hold timing. |
| Bus Hold Current | ±75 μA to ±135 μA - Actively retains logic state on floating inputs, eliminating need for 10 kΩ pull-up/down resistors. |
| IOFF Leakage | ±100 μA at VCC = 0 V - Prevents back-powering of powered-down sections during hot-swap or partial system shutdown. |
| ESD Rating | HBM >2000 V, CDM >1000 V - Meets JEDEC JS-001/JS-002 requirements for handling in automated assembly lines. |
Pinout & Package
TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm lead pitch, 1.2 mm max height - optimized for high-density routing and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR (Pins 1, 24) | Direction control input | Active-HIGH signal selecting data flow direction per 8-bit port (A→B or B→A). |
| 1OE, 2OE (Pins 48, 25) | Output enable input | Active-LOW control enabling/disabling respective 8-bit output groups into high-impedance state. |
| 1A0–1A7 (Pins 47, 46, 44, 43, 41, 40, 38, 37) | Data I/O port A | First 8-bit bidirectional bus segment; connected to local controller or memory subsystem. |
| 1B0–1B7 (Pins 2, 3, 5, 6, 8, 9, 11, 12) | Data I/O port B | Second 8-bit bidirectional bus segment; typically interfaces to peripheral or expansion bus. |
| 2A0–2A7 (Pins 36, 35, 33, 32, 30, 29, 27, 26) | Data I/O port C | Third 8-bit group (lower half of second transceiver); shares VCC/GND with port B. |
| 2B0–2B7 (Pins 13, 14, 16, 17, 19, 20, 22, 23) | Data I/O port D | Fourth 8-bit group (upper half of second transceiver); enables full 16-bit or split 8+8 configuration. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four distributed supply pins minimize IR drop and improve noise immunity across wide bus traces. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight ground connections ensure low-inductance return paths for fast switching currents. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-bit transceivers | Enables flexible partitioning: one port for CPU-to-memory, another for CPU-to-peripheral, with separate OE/DIR control. |
| Bus hold inputs | Maintains defined logic state on unconnected or tri-stated inputs, removing 16 external pull-up resistors in typical implementations. |
| Overvoltage-tolerant inputs (5.5 V) | Permits direct connection to 5 V buses without clamping diodes or level translators, simplifying mixed-voltage designs. |
| IOFF partial power-down | Blocks current flow between I/O pins and VCC when powered off, preventing backfeeding in hot-swap or modular systems. |
| Live insertion/extraction support | Ensures safe mechanical insertion/removal while system is powered, critical for field-replaceable modules and telecom line cards. |
Applications
| Server Backplane Interface | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Bidirectional data transfer between 3.3 V processor and legacy 5 V peripheral cards in a 19-inch rack-mounted server backplane. IC Role / Device Role / Timing Role: Level-translating bus transceiver managing address/data strobes with sub-3.5 ns propagation delay to meet PCI-X timing budgets. Use Value: Eliminates discrete level shifters and pull-up networks, reducing layer count and improving signal integrity across 200+ mm backplane traces. |
Use Scenario: Isolating and buffering digital I/O signals between a 3.3 V FPGA controller and 5 V-rated relay drivers and sensor inputs in an industrial programmable logic controller. IC Role / Device Role / Timing Role: Dual-port transceiver providing galvanically isolated signal conditioning with bus hold to prevent spurious actuation during I/O module hot-swap. Use Value: Enables deterministic startup behavior and eliminates need for external debounce circuitry or pull resistors on 32-channel I/O headers. |
| Automotive Infotainment Head Unit | Test Equipment Digital Pattern Generator |
|
Use Scenario: Interfacing a 3.3 V SoC application processor with legacy 5 V display timing controllers and audio codecs in a vehicle head unit. IC Role / Device Role / Timing Role: High-speed bidirectional data bridge supporting LVDS/RGB pixel clock domains and I²S audio streams with <5 ns enable/disable transitions. Use Value: Reduces EMI through controlled slew rates and ensures glitch-free handshaking during boot and mode-switch events. |
Use Scenario: Driving high-fanout test vectors from a 3.3 V pattern generator ASIC to multiple 5 V DUTs (devices under test) in automated test equipment. IC Role / Device Role / Timing Role: Precision-controlled 16-bit driver delivering synchronized stimulus with matched tPLH/tPHL skew <0.5 ns across all lanes. Use Value: Guarantees setup/hold compliance at 100+ MHz vector rates, eliminating timing violations in boundary-scan and functional test sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Lower drive (+24 mA/-24 mA), 1.65–3.6 V supply, no bus hold, no 5 V tolerance | Suitable only for pure 3.3 V or mixed 1.8/3.3 V systems; requires external pull-ups | Select when cost sensitivity outweighs 5 V interface needs and board space allows pull-resistor placement. |
| 74ALVCH16245QFG | Higher speed (tPD = 2.1 ns typ), 1.65–3.6 V, bus hold, 5 V tolerant, but QFN48 package | Better thermal performance and smaller footprint, but incompatible with TSSOP reflow profiles | Choose for space-constrained designs needing improved thermal dissipation and identical electrical specs. |
Compared with SN74LVC16245ADGGR and 74ALVCH16245QFG, the 74LVTH16245BBX,518 uniquely combines 5.5 V input tolerance, ±64 mA drive, and TSSOP48 compatibility-making it optimal for retrofitting 5 V legacy systems without redesigning layout or power architecture.
Availability
74LVTH16245BBX,518 is available at Aetrix Electronics and suitable for server backplanes, industrial PLC I/O modules, automotive infotainment head units, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVTH16245BBX,518 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 focused on high-performance logic, analog, and MOSFET solutions, serving automotive, industrial, and computing markets with AEC-Q100-qualified and industrial-grade components.
The 74LVTH16245BBX,518 belongs to Nexperia's LVT/LVTH logic family, engineered specifically for high-speed, mixed-voltage bus interfacing in mission-critical infrastructure where reliability, timing precision, and voltage translation are non-negotiable.
FAQ
Does 74LVTH16245BBX,518 support hot-swap operation?
Yes. The device incorporates live insertion/extraction capability and IOFF circuitry that blocks current flow when VCC = 0 V, allowing safe mechanical insertion or removal while the system remains powered. This is validated per JEDEC JESD78 Class II latch-up testing and confirmed in the functional description section of the datasheet.
What is the maximum capacitive load this transceiver can drive reliably?
Based on dynamic characterization at CL = 50 pF and RL = 500 Ω, the 74LVTH16245BBX,518 maintains guaranteed propagation delays ≤3.3 ns and output transition times within specification up to 50 pF. For heavier loads (>75 pF), derating of timing margins and verification of VOL/VOH under load are required per Table 6 and Figure 5 test conditions.
Can 1OE and 2OE be tied together for single-enable operation?
Yes. Pins 48 (1OE) and 25 (2OE) are electrically independent but functionally identical active-LOW enables. They may be wired in parallel to a common control signal, enabling both 8-bit ports simultaneously. No additional logic or buffering is needed, and this configuration is explicitly supported in the functional table (Table 3).
How does bus hold functionality interact with externally pulled inputs?
Bus hold circuitry activates only when an input is left floating. If an external resistor pulls the pin to a valid logic level (VIH ≥2.0 V or VIL ≤0.8 V), the bus hold is overridden and has no effect. The hold current (±75–135 μA) is insufficient to overpower standard 1–10 kΩ pull resistors, ensuring predictable behavior in hybrid configurations.
74LVTH16245BBX,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVTH
- Package/Case:
- 60-XFQFN Dual Rows, Exposed Pad
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 60-HXQFNU (4x6)
74LVTH16245BBX,518 FAQ
1.How can I place an order for 74LVTH16245BBX,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH16245BBX,518 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 74LVTH16245BBX,518 reliable?
The price and inventory of 74LVTH16245BBX,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH16245BBX,518 is usually 5 days.
3.What payment methods are accepted for 74LVTH16245BBX,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVTH16245BBX,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVTH16245BBX,518?
74LVTH16245BBX,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH16245BBX,518 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 74LVTH16245BBX,518?
For technical support, including 74LVTH16245BBX,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH16245BBX,518 requirements.
6.How does Aetrix verify that 74LVTH16245BBX,518 is sourced from the original manufacturer or authorized distributors?
All 74LVTH16245BBX,518 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 74LVTH16245BBX,518 meets industry standards.
7.What is the process for return or replacement of 74LVTH16245BBX,518?
All 74LVTH16245BBX,518 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH16245BBX,518, 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 74LVTH16245BBX,518 part is unused and in its original packaging.
Return procedure for 74LVTH16245BBX,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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