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NXP Semiconductors 74LVC32245AEC,518
- Part No.:
- 74LVC32245AEC,518
- Manufacturer:
- NXP Semiconductors
- Package:
- 96-LFBGA
- Datasheet:
-
74LVC32245AEC,518.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 96LFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:77,259
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Product details
Overview
74LVC32245AEC,518 from Nexperia is a 32-bit non-inverting bus transceiver with four independent send/receive (nDIR) and output enable (nOE) controls, 5 V-tolerant I/Os, 2.3 V–3.6 V supply range, and LFBGA96 packaging. It enables bidirectional data flow between mixed-voltage buses (e.g., 3.3 V microcontroller and 5 V peripheral), supporting high-speed interface isolation in industrial backplanes and memory expansion subsystems.
For engineers reviewing the 74LVC32245AEC,518 datasheet, 74LVC32245AEC,518 pinout, 74LVC32245AEC,518 application, or 74LVC32245AEC,518 equivalent, key selection criteria include 5 V tolerance on all I/Os, 125 °C operating temperature, 3-state timing (enable/disable times ≤7.0 ns at 3.3 V), propagation delay ≤4.5 ns, and fine-pitch BGA pin mapping for high-density PCB routing.
Technical Context
This device implements four independent 8-bit transceiver sections (1A/1B through 4A/4B), each with dedicated nDIR (direction control) and nOE (active-low 3-state enable). Logic operation follows standard bus transceiver truth table: when nOE = LOW, outputs follow inputs in direction set by nDIR; when nOE = HIGH, all outputs enter high-impedance state regardless of nDIR.
It complies with JEDEC standards JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V), and supports hot insertion via 5.5 V-tolerant I/Os even with VCC = 0 V. ESD protection exceeds 2000 V HBM, 200 V MM, and 1000 V CDM per JESD22.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bus Width | 32-bit (four 8-bit sections) |
| Supply Voltage Range | 2.3 V to 3.6 V - enables direct use with 2.5 V/3.3 V logic rails |
| I/O Voltage Tolerance | Up to 5.5 V - allows safe interfacing with legacy 5 V systems without level shifters |
| Propagation Delay | ≤4.5 ns at VCC = 3.0–3.6 V - supports >100 MHz bus clocking in synchronous designs |
| Enable/Disable Time | ≤7.0 ns at VCC = 3.0–3.6 V - ensures fast bus arbitration and dynamic isolation |
| Operating Temperature | −40 °C to +125 °C - qualified for extended industrial and under-hood applications |
| Package | LFBGA96 (13.5 × 5.5 × 1.05 mm, 0.5 mm pitch) - optimized for compact, high-pin-count routing |
Pinout & Package
74LVC32245AEC,518 is housed in a plastic low-profile fine-pitch ball grid array (LFBGA96, SOT536-1) with 96 solder balls arranged in a 12 × 8 grid. The package features multiple VCC and GND balls (8 each) distributed across the array to minimize power/ground inductance and suppress switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| nDIR (1–4) | Direction control input (active HIGH) | Selects data flow direction per 8-bit section: LOW = A→B, HIGH = B→A |
| nOE (1–4) | Output enable input (active LOW) | Drives corresponding 8-bit port into high-Z when HIGH; enables bidirectional drive when LOW |
| A[0:7] / B[0:7] (per section) | Bidirectional data terminals | Each pair forms an isolated 8-bit transceiver channel; no internal pull-ups/pull-downs |
| VCC (8 pins) | Power supply | Distributed across package to reduce IR drop and improve PSRR |
| GND (16 pins) | Ground reference | Multiple low-inductance paths minimize ground bounce during simultaneous switching |
Key Features
| Feature | Design Value |
|---|---|
| 5 V-tolerant I/Os | Accepts up to 5.5 V input voltage with VCC as low as 2.3 V - eliminates external level translators in mixed-voltage systems |
| MULTIBYTE flow-through pinout | Standardized A/B terminal pairing per section - simplifies PCB layout and reduces trace crosstalk |
| Hot-insertion support | High-impedance state guaranteed at VCC = 0 V - prevents back-powering or latch-up during live board insertion |
| Low-noise power delivery | 8 VCC and 16 GND balls with symmetrical placement - reduces simultaneous switching noise (SSN) by >40% vs. QFP equivalents |
| JEDEC-compliant voltage ranges | Validated across three JEDEC sub-ranges (1.65–1.95 V, 2.3–2.7 V, 2.7–3.6 V) - ensures interoperability with diverse logic families |
Applications
| Industrial Backplane Interface | Memory Expansion Subsystem |
|---|---|
Use Scenario: Interfacing a 3.3 V FPGA-based controller with legacy 5 V ISA-compatible peripheral cards in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional bus transceiver isolating voltage domains while maintaining signal integrity across 32-bit parallel address/data lines. Use Value: Eliminates discrete level-shifting components; 5.5 V I/O tolerance prevents damage during hot-swap events; 125 °C rating supports operation in uncooled enclosures. | Use Scenario: Extending DRAM capacity in embedded test equipment using dual-rank DDR2 modules with mismatched VDDQ (2.5 V) and controller core (3.3 V). IC Role / Device Role / Timing Role: Direction-controlled data path buffer managing write-data (controller → memory) and read-data (memory → controller) flows on shared DQ lines. Use Value: 4.5 ns max propagation delay meets DDR2-400 tAC timing; 7 ns enable/disable supports precise burst-mode control; 3-state isolation prevents bus contention during refresh cycles. |
| Automated Test Equipment (ATE) Fixture | High-Density FPGA Mezzanine Card |
Use Scenario: Signal conditioning between a 3.3 V PXI controller and 5 V DUT interface boards in semiconductor wafer probers. IC Role / Device Role / Timing Role: Isolatable 32-bit data channel enabling safe, sequenced power-up of DUT and tester logic domains. Use Value: 2000 V HBM ESD rating protects against handling discharge; 5.5 V tolerant outputs withstand floating-bus conditions during fixture reconfiguration. | Use Scenario: Routing configuration data and status signals between a Virtex-7 FPGA (1.0 V core, 2.5 V I/O) and a companion ARM SoM (3.3 V I/O) on a 10-layer carrier board. IC Role / Device Role / Timing Role: Voltage-level-agile transceiver managing multi-drop control bus (e.g., I²C-like sideband signaling) with direction arbitration. Use Value: Four independent nOE/nDIR pairs allow per-channel enable sequencing; LFBGA96 footprint saves >35% board area vs. TQFP alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC8T245RHLR | 8-bit, not 32-bit; same 2.3–3.6 V supply and 5 V tolerance; VQFN-24 package | Requires four devices to match 32-bit width; higher board area and routing complexity | Choose only if design requires modular, lower-pin-count layout or thermal constraints preclude BGA |
| 74AVC32T245ZQLR | 32-bit, but 1.2–3.6 V supply; higher speed (2.1 ns typ. tpd); 100-ball BGA (SOT1170) | Supports 1.2 V I/O domains (e.g., LPDDR interfaces); tighter timing margin but narrower voltage headroom at 3.3 V | Prefer when interfacing ultra-low-voltage logic; avoid if system lacks tight VCC regulation or operates near 3.6 V max |
Compared with SN74LVC8T245RHLR, the 74LVC32245AEC,518 reduces component count and interconnect invariance by integrating all 32 bits in one package; versus 74AVC32T245ZQLR, it trades 1.2 V compatibility for superior noise immunity and wider supply margin at 3.3 V operation.
Availability
74LVC32245AEC,518 is available at Aetrix Electronics and suitable for industrial backplanes, memory expansion subsystems, automated test equipment fixtures, and high-density FPGA mezzanine cards requiring stable component supply across extended temperature ranges.
Supply support for 74LVC32245AEC,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 essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVC series targets robust, low-power, mixed-voltage digital interfacing - designed specifically for reliable signal translation and bus isolation in space-constrained, thermally demanding embedded systems.
FAQ
What is the maximum allowable input voltage when VCC = 0 V?
When VCC = 0 V, the 74LVC32245AEC,518 maintains high-impedance outputs and tolerates up to 5.5 V on all I/O pins (A[0:7], B[0:7]) without damage or back-powering. This capability is verified per datasheet Section 8 (Recommended Operating Conditions) and enables safe hot-plug operation in modular systems where power sequencing is uncontrolled.
How should nOE be biased during power-up to ensure defined outputs?
To guarantee high-impedance outputs during power-up or brownout, each nOE pin must be tied to VCC via an external pull-up resistor. The minimum resistance value depends on the driver's current-sinking capability; Nexperia recommends ≥10 kΩ for typical CMOS drivers, as specified in Section 1 of the datasheet to prevent unintended bus contention before firmware initializes control signals.
Does this device support hot-swapping in live backplane environments?
Yes - the 74LVC32245AEC,518 supports hot-swapping due to its 5.5 V-tolerant I/Os, zero-VCC high-impedance state, and robust ESD protection (2000 V HBM). When inserted into a powered backplane, it remains electrically inert until VCC stabilizes and nOE is asserted, preventing bus glitches or latch-up in systems like PXI or CompactPCI.
Can the four transceiver sections operate at different supply voltages?
No - all sections share a single VCC rail (pins C3, C4, F3, F4, L3, L4, P3, P4) and must operate at the same supply voltage (2.3–3.6 V). Independent voltage domains per section are not supported; mixed-voltage operation is achieved only via 5 V-tolerant I/Os referenced to the common VCC, not separate supplies.
74LVC32245AEC,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVC
- Package/Case:
- 96-LFBGA
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 96-LFBGA (13.5x5.5)
74LVC32245AEC,518 FAQ
1.How can I place an order for 74LVC32245AEC,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC32245AEC,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 74LVC32245AEC,518 reliable?
The price and inventory of 74LVC32245AEC,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC32245AEC,518 is usually 5 days.
3.What payment methods are accepted for 74LVC32245AEC,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC32245AEC,518 transactions.
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4.How is shipping managed for 74LVC32245AEC,518?
74LVC32245AEC,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC32245AEC,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 74LVC32245AEC,518?
For technical support, including 74LVC32245AEC,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC32245AEC,518 requirements.
6.How does Aetrix verify that 74LVC32245AEC,518 is sourced from the original manufacturer or authorized distributors?
All 74LVC32245AEC,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 74LVC32245AEC,518 meets industry standards.
7.What is the process for return or replacement of 74LVC32245AEC,518?
All 74LVC32245AEC,518 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC32245AEC,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 74LVC32245AEC,518 part is unused and in its original packaging.
Return procedure for 74LVC32245AEC,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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