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NXP Semiconductors 74LVCH32245AEC,551
- Part No.:
- 74LVCH32245AEC,551
- Manufacturer:
- NXP Semiconductors
- Package:
- 96-LFBGA
- Datasheet:
-
74LVCH32245AEC,551.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 96LFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,157
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Product details
Overview
74LVCH32245AEC,551 from NXP Semiconductors is a 32-bit non-inverting bus transceiver with four independent direction (nDIR) and output enable (nOE) controls, 5 V-tolerant I/Os, 2.3 V–3.6 V supply range, and bus-hold inputs - enabling robust level translation in mixed-voltage 3.3 V/5 V backplane and memory interface applications.
For engineers reviewing the 74LVCH32245AEC,551 datasheet, 74LVCH32245AEC,551 pinout, 74LVCH32245AEC,551 application, or 74LVCH32245AEC,551 equivalent, key selection factors include its LFBGA96 package, −40 °C to +125 °C operation, 3-state isolation timing (tpd ≤ 6.0 ns at 3.0–3.6 V), and guaranteed 5.5 V overvoltage tolerance on disabled outputs.
Technical Context
This device implements four independent 8-bit bidirectional data paths, each controlled by dedicated nDIR (direction) and nOE (output enable) pins. Its CMOS architecture supports true 3-state outputs with high-impedance hold during power-up/down when nOE is pulled up to VCC.
Bus-hold circuitry is integrated on all data inputs (A/B ports), eliminating external pull resistors for unused lines. Inputs accept 0–5.5 V regardless of VCC, while outputs drive to VCC levels and tolerate up to 5.5 V in 3-state - critical for hot-swap and mixed-supply system interoperability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 32-bit non-inverting bidirectional bus transceiver with 4× independent 8-bit channels |
| Supply Voltage | 2.3 V to 3.6 V - enables compatibility with 2.5 V and 3.3 V logic domains |
| I/O Voltage Tolerance | Inputs and outputs withstand up to 5.5 V - allows safe interfacing with legacy 5 V systems |
| Propagation Delay | ≤ 4.5 ns (max) at VCC = 3.0–3.6 V - ensures timing-critical data path integrity in high-speed buses |
| Operating Temperature | −40 °C to +125 °C - qualified for extended industrial and under-hood automotive-adjacent environments |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets JEDEC JESD22-A114F/A115B/C101E for board-level robustness |
| Input Bus-Hold | Integrated on all A/B data pins - prevents floating inputs without external components |
Pinout & Package
Package: LFBGA96 (SOT536-1), plastic low-profile fine-pitch ball grid array, 13.5 mm × 5.5 mm × 1.05 mm body, 96 solder balls.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A[0:7], 2A[0:7], 3A[0:7], 4A[0:7] | Data port A (input/output) | Eight-bit bidirectional data channel A for group 1–4; connects to local bus or controller side |
| 1B[0:7], 2B[0:7], 3B[0:7], 4B[0:7] | Data port B (input/output) | Eight-bit bidirectional data channel B for group 1–4; connects to peripheral or memory side |
| 1DIR–4DIR | Direction control (active HIGH) | Controls data flow direction per channel: HIGH = A→B, LOW = B→A |
| 1OE–4OE | Output enable (active LOW) | Disables corresponding A/B outputs into high-impedance state; must be pulled up for power-up safety |
| VCC | Supply voltage | Eight dedicated VCC balls (C3/C4/F3/F4/L3/L4/P3/P4) minimize supply noise and ground bounce |
| GND | Ground reference | Sixteen GND balls (B3/B4/D3/D4/E3/E4/G3/G4/K3/K4/M3/M4/N3/N4/R3/R4) ensure low-inductance return paths |
Key Features
| Feature | Design Value |
|---|---|
| 5 V-tolerant I/Os | Supports direct connection to 5 V TTL/CMOS without level shifters in mixed-voltage systems |
| MULTIBYTE flow-through pinout | Standardized A/B port layout across all four channels simplifies PCB routing and signal integrity planning |
| Bus-hold on all data inputs | Eliminates need for external pull-up/down resistors on unused or unterminated data lines |
| High-impedance during VCC = 0 V | Prevents back-driving of powered subsystems during power sequencing or hot-plug events |
| JEDEC-compliant voltage ranges | Fully compliant with JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V) |
Applications
| Industrial Backplane Interface | Memory Subsystem Translation |
|---|---|
Use Scenario: Interfacing 3.3 V FPGA I/O banks with legacy 5 V peripheral modules on a modular PLC backplane. IC Role / Device Role / Timing Role: Bidirectional voltage-translating transceiver managing data flow between mismatched logic families with precise 3-state control per segment. Use Value: Eliminates discrete level-shifter ICs and reduces BOM count while maintaining <6 ns propagation delay and hot-swap-safe 5.5 V tolerant I/Os. |
Use Scenario: Connecting a 3.3 V microcontroller's parallel address/data bus to 5 V SRAM or EPROM in embedded instrumentation. IC Role / Device Role / Timing Role: 32-bit bidirectional bus buffer with per-channel direction and enable control for memory read/write cycles. Use Value: Enables reliable memory access across voltage domains without timing penalty - tpd ≤ 4.5 ns and tdis ≤ 7.0 ns at 3.3 V support tight memory timing budgets. |
| Automotive Infotainment Gateway | Test Equipment Data Bus |
Use Scenario: Isolating and translating signals between 3.3 V SoC subsystems and 5 V CAN/LIN physical layer interfaces in head-unit designs. IC Role / Device Role / Timing Role: Voltage-agile bus transceiver providing galvanic separation via 3-state control during fault conditions or power cycling. Use Value: −40 °C to +125 °C rating and >2000 V HBM ESD protection meet harsh automotive environmental requirements without derating. |
Use Scenario: Buffering high-speed digital test patterns between 3.3 V pattern generator ASICs and 5 V DUT interfaces in ATE systems. IC Role / Device Role / Timing Role: Low-skew (tsk(o) ≤ 1.5 ns), low-noise transceiver with multiple independent enables for synchronized stimulus/response routing. Use Value: Low-inductance VCC/GND pin distribution and flow-through pinout minimize crosstalk and ground bounce in multi-channel test fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC3245APM | Same 32-bit function, but rated only to +85 °C and uses TSSOP-56 package - no bus-hold circuitry | Suitable for commercial-temperature consumer electronics; lacks industrial thermal margin and input hold | Select when cost-sensitive commercial designs do not require extended temperature or bus-hold |
| 74ALVCH32245AEC,551 | Pin-compatible upgrade with 1.65–3.6 V supply range and faster tpd (≤3.5 ns at 3.3 V), same LFBGA96 package | Enables lower-voltage operation and tighter timing in next-gen industrial controllers | Choose for new designs requiring sub-2 V operation or improved speed without layout change |
Compared with SN74LVC3245APM, the 74LVCH32245AEC,551 adds bus-hold and extended temperature support; compared with 74ALVCH32245AEC,551, it trades minor speed for broader voltage stability and proven qualification history.
Availability
74LVCH32245AEC,551 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystem translation, automotive infotainment gateways, and automated test equipment requiring stable component supply across extended temperature ranges.
Supply support for 74LVCH32245AEC,551 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74LVCH32245AEC,551 belongs to NXP's LVCH logic family, designed specifically for high-reliability, mixed-voltage bus interfacing in industrial control and infrastructure systems where robustness, wide operating range, and long-term supply stability are critical.
FAQ
What is the maximum supply voltage for the 74LVCH32245AEC,551?
The absolute maximum supply voltage (VCC) for the 74LVCH32245AEC,551 is +6.5 V, but the recommended operating range is strictly 2.3 V to 3.6 V. Operation outside this range may compromise parametric performance or reliability. The 74LVCH32245AEC,551 maintains full functionality and timing specifications only within the 2.3–3.6 V window, as validated across −40 °C to +125 °C.
Does the 74LVCH32245AEC,551 support hot-swap operation?
Yes, the 74LVCH32245AEC,551 supports hot-swap operation due to its 5.5 V-tolerant outputs in 3-state mode and high-impedance behavior when VCC = 0 V. When nOE is held HIGH (via pull-up), outputs remain safely isolated even if VCC is unpowered. This prevents back-driving of live buses - a key requirement for field-replaceable modules using the 74LVCH32245AEC,551.
How does bus-hold functionality work on the 74LVCH32245AEC,551?
The 74LVCH32245AEC,551 integrates bus-hold circuitry on all A and B data inputs (but not on nDIR/nOE control pins). When an input floats, the internal weak feedback latch holds the last valid logic state - eliminating external pull resistors. Bus-hold activates automatically and deactivates only when VI exceeds VCC, allowing safe 5.5 V input overvoltage handling per the 74LVCH32245AEC,551 datasheet.
What is the pin compatibility status between 74LVCH32245AEC,551 and 74ALVCH32245AEC,551?
The 74LVCH32245AEC,551 and 74ALVCH32245AEC,551 share identical LFBGA96 (SOT536-1) packaging, pinout, and ball assignment - making them mechanically and electrically pin-compatible. However, the 74ALVCH32245AEC,551 extends minimum supply down to 1.65 V and improves propagation delay, so direct substitution requires verification of VCC range and timing margins in the target design.
Can the 74LVCH32245AEC,551 interface directly with TTL logic?
Yes, the 74LVCH32245AEC,551 provides direct interface capability with TTL logic. Its inputs recognize TTL voltage thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 3.0–3.6 V), and outputs drive TTL-compatible levels (VOH ≥ VCC − 0.2 V, VOL ≤ 0.4 V at 4 mA load). This native TTL compatibility is explicitly confirmed in the 74LVCH32245AEC,551 product data sheet Section 2.
74LVCH32245AEC,551 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVCH
- Package/Case:
- 96-LFBGA
- Packaging:
- Tray
- 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,551 FAQ
1.How can I place an order for 74LVCH32245AEC,551 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH32245AEC,551 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,551 reliable?
The price and inventory of 74LVCH32245AEC,551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH32245AEC,551 is usually 5 days.
3.What payment methods are accepted for 74LVCH32245AEC,551?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH32245AEC,551 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH32245AEC,551?
74LVCH32245AEC,551 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH32245AEC,551 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,551?
For technical support, including 74LVCH32245AEC,551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH32245AEC,551 requirements.
6.How does Aetrix verify that 74LVCH32245AEC,551 is sourced from the original manufacturer or authorized distributors?
All 74LVCH32245AEC,551 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,551 meets industry standards.
7.What is the process for return or replacement of 74LVCH32245AEC,551?
All 74LVCH32245AEC,551 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH32245AEC,551, 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,551 part is unused and in its original packaging.
Return procedure for 74LVCH32245AEC,551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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