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onsemi NLV74LCX244DTR2G
- Part No.:
- NLV74LCX244DTR2G
- Manufacturer:
- onsemi
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
NLV74LCX244DTR2G.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,851
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Product details
Overview
NLV74LCX244DTR2G from onsemi is a low-voltage CMOS octal non-inverting 3-state buffer with 5 V-tolerant inputs and outputs, operating from 1.65 V to 5.5 V supply. It delivers ±24 mA output drive, features IOFF protection at VCC = 0 V, and supports live insertion in bus-oriented memory address driving applications.
For engineers reviewing the NLV74LCX244DTR2G datasheet, pinout, applications, or equivalent options, key selection criteria include 5 V tolerance on all I/O, 7.3 ns max propagation delay at 5 V, 20-pin TSSOP package, and AEC-Q100 qualification for automotive use cases.
Technical Context
The NLV74LCX244DTR2G implements dual 4-bit non-inverting buffers with independent 3-state control (1OE, 2OE), enabling selective bus isolation. Its TTL-compatible inputs reduce loading on upstream drivers while maintaining LVTTL/LVCMOS logic compatibility across 1.65–5.5 V operation.
IOFF circuitry ensures high-impedance outputs even when VCC = 0 V, supporting hot-swap capability. Propagation delay remains ≤7.3 ns (tPLH/tPHL) and output enable/disable times are ≤7.3 ns (tPZH/tPZL) at 4.5–5.5 V, with output-to-output skew ≤1.0 ns under matched load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - Enables direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| Input Voltage Tolerance | −0.5 V to +6.5 V - Allows safe connection to legacy 5 V TTL outputs without clamping diodes or external protection. |
| Output Drive Strength | ±24 mA - Sufficient to drive 50 Ω transmission lines or multiple LVTTL loads in memory address or data bus applications. |
| Propagation Delay | 5.9 ns max (VCC = 4.5–5.5 V) - Supports >100 MHz bus clocking with deterministic timing margins. |
| IOFF Leakage | 10 µA max at VCC = 0 V - Guarantees true high-impedance state during power sequencing or hot-plug events. |
| ESD Rating | HBM >2000 V - Meets industrial robustness requirements without additional board-level ESD protection. |
| Operating Temperature | −55 °C to +125 °C - Qualified for extended automotive and industrial environments per AEC-Q100. |
Pinout & Package
TSSOP-20 package (Case 948E), 0.65 mm pitch, 6.5 mm × 4.4 mm body, Pb-free, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-HIGH 3-state enable inputs - Assert HIGH to place corresponding 4-bit output group (1O0–1O3 or 2O0–2O3) into high-impedance state. |
| 2, 4, 6, 8, 17, 15, 13, 11 | 1D0–1D3, 2D0–2D3 | Data inputs - Accept 1.65–5.5 V logic levels; high-impedance TTL-compatible inputs minimize loading on source drivers. |
| 18, 16, 14, 12, 3, 5, 7, 9 | 1O0–1O3, 2O0–2O3 | Non-inverting buffered outputs - Deliver rail-to-rail swing with 24 mA sink/source capability and 5 V tolerance. |
| 20 | VCC | Power supply input - Must be decoupled locally; supports wide-range operation from 1.65 V to 5.5 V. |
| 10 | GND | Ground reference - Shared return path for all I/O and internal logic; requires low-inductance PCB connection. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V-tolerant I/O | Enables seamless interfacing between mixed-voltage systems (e.g., 3.3 V MCU controlling 5 V peripheral buses) without external level translators. |
| IOFF power-off protection | Prevents back-driving of powered-down sections during partial system power cycling - critical for modular hot-swap architectures. |
| 24 mA balanced drive | Supports fan-out to ≥10 LVTTL loads or point-to-point routing on controlled-impedance traces up to 15 cm at 100 MHz. |
| Ultra-low quiescent current | 10 µA max ICC in all three logic states - reduces standby power in battery-backed or always-on embedded controllers. |
| AEC-Q100 qualified | Validated for automotive applications including engine control units (ECUs), body electronics, and ADAS sensor interfaces. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Isolating microcontroller GPIOs from 5 V CAN transceiver address/data buses during sleep mode. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer providing voltage-level bridging and bus contention prevention. Use Value: IOFF functionality maintains high-impedance outputs at VCC = 0 V, eliminating risk of back-powering the MCU during deep-sleep states. |
Use Scenario: Driving multiple 24 V digital input cards from a 3.3 V FPGA-based controller in factory automation. IC Role / Device Role / Timing Role: Octal buffer amplifying logic signals while tolerating 5 V feedback from optocoupler-isolated inputs. Use Value: 5 V-tolerant inputs accept direct connection to 5 V opto-output stages, reducing BOM count and layout area. |
| Memory Address Driver | Hot-Swappable Server Backplane |
|
Use Scenario: Buffering 16-bit address lines between low-voltage SoC and DDR2/DDR3 memory modules requiring 5 V-compatible signaling. IC Role / Device Role / Timing Role: Low-skew octal buffer ensuring simultaneous edge alignment across address bits to meet tAC setup/hold windows. Use Value: Output-to-output skew ≤1.0 ns at 3.3 V guarantees deterministic address decoding timing across full temperature range. |
Use Scenario: Enabling live insertion of PCIe add-in cards into server backplanes with mixed 1.8 V/3.3 V/5 V domain interconnects. IC Role / Device Role / Timing Role: Bidirectional bus isolator managing signal integrity during card insertion/removal sequences. Use Value: Live-insertion support and IOFF protection prevent bus contention and ground bounce during mechanical mating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal non-inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC74LCX244DTR2G | Same core logic, identical pinout and AC/DC specs, but rated for −40 °C to +85 °C industrial range only. | Lacks AEC-Q100 qualification and extended −55 °C to +125 °C operation. | Select when automotive qualification and extreme temperature support are not required. |
| SN74LVC244APWR | Lower drive (±24 mA same), but narrower VCC range (1.65–3.6 V); no 5 V tolerance - requires external clamping for 5 V inputs. | Not suitable for direct 5 V bus interfacing; limited to 3.3 V-only systems. | Choose only in pure 3.3 V designs where cost is prioritized over mixed-voltage flexibility. |
Compared with MC74LCX244DTR2G and SN74LVC244APWR, the NLV74LCX244DTR2G uniquely combines AEC-Q100 qualification, −55 °C to +125 °C operation, and guaranteed 5 V I/O tolerance - making it the sole option for automotive-grade hot-swap and mixed-voltage bus isolation.
Availability
NLV74LCX244DTR2G is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O expansion, memory address driving, and hot-swappable server backplane applications requiring stable component supply across extended temperature and qualification requirements.
Supply support for NLV74LCX244DTR2G 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NLV74LCX244DTR2G belongs to the LCX logic family, engineered for low-voltage, high-speed, mixed-signal interfacing in harsh-environment systems where reliability, voltage flexibility, and qualification compliance are mandatory.
FAQ
What is the maximum operating temperature range for NLV74LCX244DTR2G?
The NLV74LCX244DTR2G is specified for operation from −55 °C to +125 °C ambient temperature and is AEC-Q100 qualified, making it suitable for under-hood automotive and industrial environments where thermal extremes occur. This extended range exceeds standard commercial or industrial grade alternatives and is validated through accelerated life testing per automotive reliability standards.
Does NLV74LCX244DTR2G support live insertion in backplane applications?
Yes, NLV74LCX244DTR2G supports live insertion and withdrawal due to its IOFF specification, which guarantees high-impedance outputs even when VCC = 0 V. This prevents bus contention and signal corruption during mechanical mating - a requirement explicitly confirmed in the datasheet's Features section and validated in AEC-Q100 stress tests.
Can NLV74LCX244DTR2G safely interface with 5 V TTL logic while powered from 3.3 V?
Yes, NLV74LCX244DTR2G accepts input voltages up to +6.5 V (VI rating) and has 5 V-tolerant inputs/outputs, allowing direct connection to 5 V TTL devices when VCC = 3.3 V. The VIH/VIL thresholds scale with VCC, and the device drives outputs to full 3.3 V rails - verified across all recommended operating conditions in the datasheet's DC Electrical Characteristics table.
What is the propagation delay of NLV74LCX244DTR2G at 5 V supply?
At VCC = 4.5 V to 5.5 V, the NLV74LCX244DTR2G exhibits a maximum propagation delay (tPLH/tPHL) of 5.9 ns, measured under standard test conditions (CL = 50 pF, RL = 500 Ω). This value is guaranteed across −55 °C to +125 °C and reflects worst-case performance for timing-critical address or control bus applications.
Is NLV74LCX244DTR2G pin-compatible with standard 74LCX244 variants?
Yes, NLV74LCX244DTR2G uses the same 20-pin TSSOP footprint (Case 948E) and identical pinout as MC74LCX244DTG/DTR2G. Signal assignments - including dual OE controls, interleaved D/O pins, and shared VCC/GND - match exactly, enabling drop-in replacement in existing layouts without redesign.
NLV74LCX244DTR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LCX
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
NLV74LCX244DTR2G FAQ
1.How can I place an order for NLV74LCX244DTR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NLV74LCX244DTR2G 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 NLV74LCX244DTR2G reliable?
The price and inventory of NLV74LCX244DTR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NLV74LCX244DTR2G is usually 5 days.
3.What payment methods are accepted for NLV74LCX244DTR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NLV74LCX244DTR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NLV74LCX244DTR2G?
NLV74LCX244DTR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NLV74LCX244DTR2G 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 NLV74LCX244DTR2G?
For technical support, including NLV74LCX244DTR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NLV74LCX244DTR2G requirements.
6.How does Aetrix verify that NLV74LCX244DTR2G is sourced from the original manufacturer or authorized distributors?
All NLV74LCX244DTR2G 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 NLV74LCX244DTR2G meets industry standards.
7.What is the process for return or replacement of NLV74LCX244DTR2G?
All NLV74LCX244DTR2G units undergo pre-shipment inspection (PSI). If there is an issue with NLV74LCX244DTR2G, 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 NLV74LCX244DTR2G part is unused and in its original packaging.
Return procedure for NLV74LCX244DTR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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