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NXP Semiconductors 74LVCH322245AEC,51
- Part No.:
- 74LVCH322245AEC,51
- Manufacturer:
- NXP Semiconductors
- Package:
- 96-LFBGA
- Datasheet:
-
74LVCH322245AEC,51.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 96LFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,116
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Product details
Overview
74LVCH322245AEC,51 from NXP Semiconductors is a 32-bit non-inverting 3-state bus transceiver with four independent direction (nDIR) and output enable (nOE) controls, integrated 30 Ω series termination resistors on all outputs, 1.2 V to 3.6 V supply operation, and 5 V tolerant I/Os. It enables bidirectional data flow between mixed-voltage buses in high-density memory or peripheral interconnects.
For engineers reviewing the 74LVCH322245AEC,51 datasheet, 74LVCH322245AEC,51 pinout, 74LVCH322245AEC,51 application, or 74LVCH322245AEC,51 equivalent, key selection criteria include its LFBGA96 package, −40 °C to +85 °C industrial temperature range, bus hold on all data inputs, and 5.5 V-tolerant 3-state outputs during power-down.
Technical Context
This transceiver implements four independent 8-bit bidirectional channels, each with dedicated nDIR and nOE pins for granular control-enabling selective isolation or direction reversal without affecting other lanes. Each channel supports simultaneous A→B and B→A data transfer under active nOE and appropriate nDIR state.
It integrates 30 Ω series termination resistors in both HIGH and LOW output stages to suppress transmission-line reflections, reduces ground bounce via low-inductance multiple VCC/GND ball assignments, and features bus hold circuitry on all data inputs to eliminate external pull-ups for unused pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 1.2 V to 3.6 V - supports low-power portable systems and legacy 3.3 V infrastructure |
| I/O voltage tolerance | Up to 5.5 V - allows safe interfacing with 5 V TTL/CMOS logic without level shifters |
| Propagation delay | 3.3 ns typical at VCC = 3.3 V - ensures timing compliance in high-speed parallel bus designs |
| Bus hold current | ±75 µA at VCC = 3.0 V - actively maintains valid logic states on floating data inputs |
| Output termination | 30 Ω series resistor per output - minimizes signal overshoot/ringing on PCB traces up to 10 cm |
| ESD protection | HBM > 2000 V, MM > 200 V - meets JEDEC JESD22-A114-B/A115-A for robust board handling |
| Operating temperature | −40 °C to +85 °C - qualified for industrial-grade embedded and automotive body electronics |
Pinout & Package
74LVCH322245AEC,51 is packaged in a plastic low-profile fine-pitch ball grid array (LFBGA96) with 96 solder balls in a 13.5 mm × 5.5 mm × 1.05 mm body (SOT536-1). The package provides 8 ground balls and 8 VCC balls distributed across the array to minimize power delivery impedance and noise coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A[0:7], 2A[0:7], 3A[0:7], 4A[0:7] | Data port A (input/output) | Four 8-bit ports accepting or driving data toward the "A" side of the transceiver |
| 1B[0:7], 2B[0:7], 3B[0:7], 4B[0:7] | Data port B (input/output) | Four 8-bit ports accepting or driving data toward the "B" side of the transceiver |
| 1DIR–4DIR | Direction control input (active HIGH) | Determines data flow direction per channel: HIGH = A→B, LOW = B→A |
| 1OE–4OE | Output enable input (active LOW) | Places corresponding A/B port pair into high-impedance 3-state when HIGH |
| VCC | Power supply | Eight dedicated balls supply core logic voltage (1.2 V–3.6 V); decoupling required per ball group |
| GND | Ground reference | Sixteen ground balls provide low-inductance return paths for all I/O and internal switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω series termination | Reduces signal integrity issues on FR-4 PCB traces without requiring discrete resistors or layout tuning |
| Bus hold on all data inputs | Eliminates need for external pull-up/pull-down resistors on unused or unterminated data lines |
| 5 V tolerant I/Os | Enables direct connection to legacy 5 V peripherals while powered from 1.2 V–3.6 V supplies |
| MULTIBYTE flow-through pinout | Minimizes trace crossovers and layer count in dense routing environments like memory modules |
| JEDEC JESD8-B/JESD36 compliance | Ensures interoperability with standard low-voltage CMOS logic families in multi-vendor systems |
Applications
| Memory Subsystem Interconnect | Industrial I/O Expansion |
|---|---|
Use Scenario: Bidirectional data transfer between a 32-bit microcontroller and parallel SRAM or Flash memory banks. IC Role / Device Role / Timing Role: Level-shifting, bus isolation, and noise-suppressed transceiver enabling clean read/write cycles at up to 100 MHz. Use Value: Integrated 30 Ω termination eliminates reflection-induced setup/hold violations on 5–10 cm memory traces. |
Use Scenario: Connecting a 3.3 V FPGA I/O bank to legacy 5 V industrial sensors and actuators over ribbon cable. IC Role / Device Role / Timing Role: Voltage-tolerant bidirectional interface with per-channel direction and enable control for modular I/O expansion. Use Value: 5.5 V-tolerant outputs allow safe hot-plug operation even when 5 V peripherals are powered before the FPGA. |
| Automotive Body Control Module | Test Equipment Backplane |
Use Scenario: Isolating and translating signals between a 3.3 V CAN controller MCU and 5 V analog sensor interface ASICs. IC Role / Device Role / Timing Role: Fault-isolated bus transceiver with independent channel enables for diagnostic mode segmentation. Use Value: Bus hold prevents floating inputs during ECU sleep/wake transitions, avoiding spurious interrupts. |
Use Scenario: Reconfigurable signal routing between DUT sockets and measurement instruments on automated test equipment backplanes. IC Role / Device Role / Timing Role: High-density, low-noise bidirectional path selector supporting multiple DUT form factors. Use Value: LFBGA96 footprint and flow-through pinout simplify high-pin-count backplane layout with minimal stub length. |
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 architecture, but uses TSSOP-100 package (larger footprint, no integrated termination) | Lacks 30 Ω series resistors; requires external termination for signal integrity on long traces | Preferred where PCB space permits larger package and discrete termination is acceptable |
| 74AVCH322245AEC,51 | Higher-speed variant (VCC = 2.5 V–3.6 V only), lower propagation delay (2.2 ns typ), same LFBGA96 package | Not rated for 1.2 V operation; unsuitable for ultra-low-voltage battery-powered systems | Select when maximum speed is critical and supply voltage is ≥2.5 V |
Compared with SN74LVC32245PAG, the 74LVCH322245AEC,51 saves board area and improves signal integrity via integrated termination; compared with 74AVCH322245AEC,51, it extends voltage flexibility down to 1.2 V at the cost of ~1.1 ns higher propagation delay.
Availability
74LVCH322245AEC,51 is available at Aetrix Electronics and suitable for memory subsystem interconnect, industrial I/O expansion, and automotive body control module designs requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for 74LVCH322245AEC,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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74LVCH322245AEC,51 belongs to NXP's LVCH family of low-voltage CMOS transceivers, designed specifically for noise-sensitive, mixed-voltage parallel bus interfaces in space-constrained industrial and automotive electronics.
FAQ
What is the minimum supply voltage for reliable operation of the 74LVCH322245AEC,51?
The 74LVCH322245AEC,51 operates reliably from 1.2 V to 3.6 V. At 1.2 V, it meets all static and dynamic specifications including propagation delay (≤12 ns), bus hold functionality, and 3-state leakage limits. This makes the 74LVCH322245AEC,51 suitable for ultra-low-power battery-operated systems where supply headroom is constrained.
Can the 74LVCH322245AEC,51 safely interface with 5 V logic while powered at 2.5 V?
Yes. The 74LVCH322245AEC,51 has 5 V tolerant inputs and outputs - meaning it accepts input voltages up to 5.5 V and drives outputs up to 5.5 V in 3-state mode, regardless of VCC (1.2 V–3.6 V). This allows direct connection to 5 V peripherals without level shifters, and the 74LVCH322245AEC,51 remains fully functional at 2.5 V supply.
How does the bus hold feature work on the 74LVCH322245AEC,51, and which pins support it?
The bus hold circuit actively maintains the last-valid logic state on all data input pins (1A[0:7] through 4B[0:7]) using ±75 µA feedback current. It is disabled when input voltage exceeds VCC, allowing safe 5.5 V application. Control pins (nDIR, nOE) do not have bus hold. This eliminates external pull resistors for unused or unterminated data lines in the 74LVCH322245AEC,51.
What is the purpose of the integrated 30 Ω series termination resistors in the 74LVCH322245AEC,51?
The 30 Ω series resistors in the 74LVCH322245AEC,51 are placed in both HIGH and LOW output drive paths to dampen signal reflections on PCB traces, reducing overshoot, undershoot, and ringing. They are optimized for typical FR-4 characteristic impedances (50–75 Ω) and enable clean signal edges on traces up to 10 cm without external components - directly improving timing margin in the 74LVCH322245AEC,51.
Is the 74LVCH322245AEC,51 pin-compatible with other members of the LVCH transceiver family?
The 74LVCH322245AEC,51 shares identical pinout, ball assignment, and functional mapping with all variants in the LVCH322245A series (e.g., 74LVCH322245AET, 74LVCH322245AHL), including identical LFBGA96 (SOT536-1) footprint and signal-to-ball mapping. However, it is not pin-compatible with AVCH or LVC variants due to differing electrical characteristics and thermal pad configurations.
74LVCH322245AEC,51 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:
- 12mA, 12mA
- 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)
74LVCH322245AEC,51 FAQ
1.How can I place an order for 74LVCH322245AEC,51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH322245AEC,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 74LVCH322245AEC,51 reliable?
The price and inventory of 74LVCH322245AEC,51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH322245AEC,51 is usually 5 days.
3.What payment methods are accepted for 74LVCH322245AEC,51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH322245AEC,51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH322245AEC,51?
74LVCH322245AEC,51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH322245AEC,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 74LVCH322245AEC,51?
For technical support, including 74LVCH322245AEC,51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH322245AEC,51 requirements.
6.How does Aetrix verify that 74LVCH322245AEC,51 is sourced from the original manufacturer or authorized distributors?
All 74LVCH322245AEC,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 74LVCH322245AEC,51 meets industry standards.
7.What is the process for return or replacement of 74LVCH322245AEC,51?
All 74LVCH322245AEC,51 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH322245AEC,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 74LVCH322245AEC,51 part is unused and in its original packaging.
Return procedure for 74LVCH322245AEC,51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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