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NXP Semiconductors 74LVCH32245AEC,518
- Part No.:
- 74LVCH32245AEC,518
- Manufacturer:
- NXP Semiconductors
- Package:
- 96-LFBGA
- Datasheet:
-
74LVCH32245AEC,518.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 96LFBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
74LVCH32245AEC,518 from NXP Semiconductors is a 32-bit non-inverting 3-state bus transceiver with four independent direction (nDIR) and output enable (nOE) controls. It operates from 2.3 V to 3.6 V, tolerates 5.5 V on I/O pins, and supports mixed 3.3 V/5 V system interfacing in high-density PCBs. Its bus hold inputs eliminate external pull-ups, and it delivers sub-6 ns propagation delay at 3.3 V.
For engineers reviewing the 74LVCH32245AEC,518 datasheet, 74LVCH32245AEC,518 pinout, 74LVCH32245AEC,518 application, or 74LVCH32245AEC,518 equivalent, key selection criteria include 5 V tolerance on all I/Os, LFBGA96 package thermal and routing constraints, -40 °C to +125 °C automotive-grade temperature range, and bus hold functionality for floating input management.
Technical Context
This transceiver implements four independent 8-bit bidirectional channels (1A/1B through 4A/4B), each controlled by dedicated nDIR and nOE signals. Direction control determines data flow path (A→B or B→A), while active-low nOE places outputs in high-impedance state-enabling true bus isolation during power-up/down sequences.
Its CMOS design meets JEDEC JESD8-7A, JESD8-5A, and JESD8-C/JESD36 standards across 1.65–3.6 V supply ranges. Bus hold circuitry actively maintains logic states on unused data inputs without external components, and ESD protection exceeds 2000 V HBM, 200 V MM, and 1000 V CDM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.3 V to 3.6 V - Enables operation in modern low-voltage logic domains while maintaining compatibility with legacy 3.3 V infrastructure. |
| I/O Voltage Tolerance | Up to 5.5 V - Allows direct connection to 5 V TTL or CMOS buses without level-shifting circuitry. |
| Propagation Delay (tpd) | 1.0 ns (min) to 6.0 ns (max) at VCC = 3.0–3.6 V - Supports high-speed data transfer in memory expansion and peripheral interconnect applications. |
| Bus Hold Current | ±75 µA at VCC = 3.0 V - Actively sustains input logic levels, eliminating need for external pull-up/pull-down resistors on idle lines. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive, industrial control, and extended-temperature embedded systems. |
| ESD Protection | HBM > 2000 V, MM > 200 V, CDM > 1000 V - Robust handling during board assembly and field service without additional protection devices. |
| Power Dissipation Capacitance | 18.5 pF per buffer at VCC = 3.0–3.6 V - Enables accurate dynamic power estimation in high-frequency switching environments. |
Pinout & Package
74LVCH32245AEC,518 is packaged in a plastic low-profile fine-pitch ball grid array (LFBGA96, SOT536-1) measuring 13.5 × 5.5 × 1.05 mm with 96 solder balls. The package features multiple VCC and GND balls distributed across the array to minimize ground bounce and improve signal integrity in high-speed digital systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR–4DIR | Direction control input (active HIGH) | Determines data flow direction per channel: LOW = A→B, HIGH = B→A; enables independent bidirectional control of four 8-bit segments. |
| 1OE–4OE | Output enable input (active LOW) | Places corresponding 8-bit port outputs in high-impedance state when HIGH; critical for bus arbitration and hot-swap isolation. |
| 1A[0:7]–4A[0:7] | Data port A input/output | First side of each 8-bit bidirectional channel; connects to local processor/memory bus or subsystem interface. |
| 1B[0:7]–4B[0:7] | Data port B input/output | Second side of each 8-bit bidirectional channel; interfaces to peripheral, memory, or external bus domain. |
| VCC | Supply voltage | Eight dedicated power balls (C3/C4/F3/F4/L3/L4/P3/P4) reduce IR drop and support stable core voltage delivery. |
| GND | Ground reference | Sixteen ground balls (B3/B4/D3/D4/E3/E4/G3/G4/K3/K4/M3/M4/N3/N4/R3/R4) provide low-inductance return paths for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant I/Os | Supports direct interfacing with 5 V logic families while powered from 2.3–3.6 V supply-eliminates level shifters in mixed-voltage designs. |
| Bus hold on all data inputs | Maintains valid logic states on unused A/B port pins without external resistors, reducing BOM count and PCB area in sparse-bus configurations. |
| MULTIBYTE flow-through pinout | Standardized A/B port layout across all four channels simplifies PCB routing and improves signal integrity via matched trace lengths. |
| Low-inductance power/ground architecture | Multiple distributed VCC and GND balls minimize simultaneous switching noise and ground bounce in high-speed 32-bit data transfers. |
| High-impedance during VCC = 0 V | Prevents back-powering of the supply rail during power sequencing, protecting upstream regulators and enabling safe hot-plug operation. |
Applications
| Automotive Body Control Module | Industrial PLC Backplane Interface |
|---|---|
Use Scenario: Bidirectional data exchange between 3.3 V microcontroller and legacy 5 V sensor cluster over CAN or LIN auxiliary bus. IC Role / Device Role / Timing Role: Level-translating bus transceiver managing isolated 32-bit command/status register access between voltage domains. Use Value: Eliminates discrete level shifters and pull-up networks, reducing component count by ≥7 parts per interface while supporting -40 °C to +125 °C ambient operation. |
Use Scenario: Interfacing modular I/O cards with main controller via parallel backplane carrying address, data, and control signals. IC Role / Device Role / Timing Role: High-speed 32-bit bidirectional bus buffer enabling hot-swappable module detection and configuration readback. Use Value: Sub-6 ns propagation delay ensures timing compliance at 25 MHz backplane clock rates; bus hold prevents floating inputs during card insertion/removal. |
| Server Memory Expansion Subsystem | Medical Imaging Data Acquisition Board |
Use Scenario: Extending DDR3/DDR4 memory address/data bus between CPU and add-in DIMM modules using compact LFBGA packaging. IC Role / Device Role / Timing Role: Low-skew (≤1.5 ns) 32-bit transceiver isolating memory controller from load capacitance of multiple DIMMs. Use Value: 18.5 pF CPD enables precise dynamic power modeling; 96-ball LFBGA allows dense routing in space-constrained server mezzanine cards. |
Use Scenario: Transmitting real-time ADC sample streams from analog front-end ASICs to FPGA-based processing units in MRI/PET systems. IC Role / Device Role / Timing Role: Noise-immune 32-bit parallel data bridge operating in high EMI environments with strict signal integrity requirements. Use Value: Distributed GND/VCC balls suppress ground bounce during 100+ MSPS data bursts; 2000 V HBM ESD rating withstands clinical handling discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC32245PAG | Same 32-bit function, 4-channel DIR/OE control, but in 100-pin TQFP (PAG) package; no bus hold; max tpd = 7.2 ns at 3.3 V. | Preferred for prototyping or manual assembly due to leaded package; lacks bus hold, requiring external pull-ups on unused lines. | Select when board reworkability or test probe access is prioritized over density and BOM reduction. |
| 74ALVCH32244AEC,518 | Pin-compatible 32-bit transceiver with identical LFBGA96 footprint, but non-inverting octal buffers (unidirectional); no nDIR pins; 5 V tolerant. | Suitable only for fixed-direction data paths (e.g., address latching); cannot replace bidirectional operation without redesign. | Choose only if application requires unidirectional buffering with identical mechanical fit and thermal profile. |
Compared with SN74LVC32245PAG and 74ALVCH32244AEC,518, the 74LVCH32245AEC,518 uniquely combines bus hold, bidirectional control per channel, and LFBGA96 density-making it optimal for production-grade automotive and industrial systems where reliability, routing efficiency, and component count matter.
Availability
74LVCH32245AEC,518 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC backplanes, server memory expansion subsystems, and medical imaging data acquisition boards requiring stable component supply across extended temperature ranges.
Supply support for 74LVCH32245AEC,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
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in interface, power management, and RF technologies.
The 74LVCH32245AEC,518 belongs to NXP's LVCH logic family, designed specifically for high-speed, low-power, mixed-voltage bus interfacing in space-constrained and thermally demanding environments.
FAQ
What is the maximum input voltage the 74LVCH32245AEC,518 can tolerate on its I/O pins?
The 74LVCH32245AEC,518 supports up to 5.5 V on all input and output pins regardless of VCC level-enabling direct interfacing with 5 V logic families while operating from a 2.3–3.6 V supply. This 5 V tolerance is guaranteed per JEDEC JESD8-C and applies across the full -40 °C to +125 °C temperature range. The 74LVCH32245AEC,518 achieves this without internal clamping diodes to VCC, relying instead on robust oxide design.
Does the 74LVCH32245AEC,518 require external pull-up resistors on unused inputs?
No. The 74LVCH32245AEC,518 integrates bus hold circuitry on all data inputs (1A[0:7] through 4B[0:7]), actively maintaining the last-valid logic state without external components. This feature eliminates the need for pull-up or pull-down resistors on floating lines, reducing BOM cost and PCB area. Bus hold is disabled when input voltage exceeds VCC, allowing safe 5.5 V application.
What is the recommended power-up sequence for the 74LVCH32245AEC,518 to ensure high-impedance outputs?
To guarantee outputs remain in high-impedance state during power-up, tie all nOE pins (A4, H4, J4, T4) to VCC via pull-up resistors. NXP specifies minimum resistor value based on driver sink capability-typically 10 kΩ suffices. This prevents bus contention before the controlling logic initializes. The 74LVCH32245AEC,518 also enters high-Z when VCC = 0 V, providing inherent power-down safety.
How does the 74LVCH32245AEC,518 handle ground bounce in high-speed switching applications?
The 74LVCH32245AEC,518 mitigates ground bounce through 16 dedicated GND balls (B3/B4/D3/D4/E3/E4/G3/G4/K3/K4/M3/M4/N3/N4/R3/R4) distributed across the LFBGA96 array. This low-inductance grounding scheme, combined with eight VCC balls, minimizes simultaneous switching noise during 32-bit transitions. Measured output skew remains ≤1.5 ns, ensuring signal integrity in 25 MHz+ parallel bus systems.
Is the 74LVCH32245AEC,518 qualified for automotive applications?
Yes. The 74LVCH32245AEC,518 is specified for -40 °C to +125 °C operation and packaged in an automotive-grade LFBGA96 (SOT536-1). While not AEC-Q100 certified out-of-box, its electrical and thermal specifications meet requirements for body electronics, infotainment, and ADAS subsystems. System-level qualification is required per OEM standards, but the 74LVCH32245AEC,518 provides the foundational robustness needed for automotive deployment.
74LVCH32245AEC,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVCH
- Package/Case:
- 96-LFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 96-LFBGA (13.5x5.5)
74LVCH32245AEC,518 FAQ
1.How can I place an order for 74LVCH32245AEC,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH32245AEC,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 74LVCH32245AEC,518 reliable?
The price and inventory of 74LVCH32245AEC,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH32245AEC,518 is usually 5 days.
3.What payment methods are accepted for 74LVCH32245AEC,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH32245AEC,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH32245AEC,518?
74LVCH32245AEC,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH32245AEC,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 74LVCH32245AEC,518?
For technical support, including 74LVCH32245AEC,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH32245AEC,518 requirements.
6.How does Aetrix verify that 74LVCH32245AEC,518 is sourced from the original manufacturer or authorized distributors?
All 74LVCH32245AEC,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 74LVCH32245AEC,518 meets industry standards.
7.What is the process for return or replacement of 74LVCH32245AEC,518?
All 74LVCH32245AEC,518 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH32245AEC,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 74LVCH32245AEC,518 part is unused and in its original packaging.
Return procedure for 74LVCH32245AEC,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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