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Nexperia USA Inc. 74LVT2244PW,112
- Part No.:
- 74LVT2244PW,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVT2244PW,112.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,411
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Product details
Overview
74LVT2244PW,112 from Nexperia is a 3.3 V octal 3-state buffer/line driver with integrated 30 Ω series termination resistors per output, designed for high-speed bus interface applications. It features dual independent 4-bit sections (1A/1Y and 2A/2Y), two active-low output enables (1OE, 2OE), bus-hold inputs eliminating external pull-ups, and BiCMOS output drive delivering ±12 mA. It is used in memory address drivers, clock distribution networks, and 5 V-tolerant bus receivers/transmitters.
For engineers reviewing the 74LVT2244PW,112 datasheet, 74LVT2244PW,112 pinout, 74LVT2244PW,112 application, or 74LVT2244PW,112 equivalent, this device is selected for low-noise 3.3 V logic interfacing where controlled-impedance drive, overvoltage-tolerant inputs (to 5.5 V), and power-up 3-state behavior are required in industrial and embedded systems.
Technical Context
The 74LVT2244PW implements dual 4-bit non-inverting buffers with independent 3-state control via 1OE and 2OE. Each output integrates matched 30 Ω series resistors in both HIGH and LOW states to suppress transmission-line reflections without external components.
Its BiCMOS architecture enables TTL-level compatibility, 5.5 V input tolerance, and IOFF circuitry supporting live insertion and partial power-down operation. Bus-hold functionality maintains valid logic states on unused inputs without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - Ensures stable operation across wide 3.3 V rail tolerances and brown-out conditions. |
| Output Drive | ±12 mA - Sufficient to drive 50 Ω transmission lines or multiple TTL loads without signal degradation. |
| Propagation Delay | 2.9 ns typical (VCC = 3.3 V) - Supports >200 MHz bus timing in memory and clock distribution paths. |
| Input Voltage Tolerance | Up to 5.5 V - Enables direct interfacing with 5 V legacy buses without level-shifting circuitry. |
| Termination Resistance | 30 Ω series per output - Matches common PCB trace impedances to minimize ringing and EMI in high-speed routing. |
| Bus Hold Current | ±75 μA to ±150 μA - Actively maintains defined logic state on floating inputs, removing need for external pull resistors. |
| IOFF Leakage | ±100 μA max at VCC = 0 V - Prevents back-driving of powered-down buses during hot-swap or partial system shutdown. |
Pinout & Package
TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output enable controls four outputs each; HIGH forces corresponding Y outputs into high-impedance state. |
| 2, 4, 6, 8 | 1A0–1A3 | Data inputs for first 4-bit buffer section; feature bus-hold for undefined states. |
| 11, 13, 15, 17 | 2A0–2A3 | Data inputs for second 4-bit buffer section; independently controlled by 2OE. |
| 12, 14, 16, 18 | 1Y0–1Y3 | Outputs for first section; each includes integrated 30 Ω series resistor for controlled-impedance drive. |
| 3, 5, 7, 9 | 2Y0–2Y3 | Outputs for second section; identical termination and drive capability as 1Yn pins. |
| 10 | GND | Ground reference for all I/O and internal circuitry; must be low-inductance connection for noise control. |
| 20 | VCC | 3.3 V supply input; decoupling capacitor required within 1 cm for stable high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω series termination | Eliminates need for discrete series resistors on PCB, reducing component count and layout complexity for impedance-matched bus driving. |
| Overvoltage-tolerant inputs (5.5 V) | Allows safe connection to 5 V buses while operating from 3.3 V supply, avoiding level translators in mixed-voltage systems. |
| Bus-hold on all data inputs | Maintains last-valid logic state on unconnected or unterminated inputs, preventing metastability and EMI from floating nodes. |
| Power-up 3-state and IOFF | Ensures outputs remain high-impedance during power ramp-up and prevent back-current when VCC = 0 V, enabling hot-plug capability. |
| Latch-up immunity >500 mA | Guarantees robustness against transient current surges per JESD78 Class II Level B, critical for industrial environments. |
Applications
| Memory Address Buffering | Backplane Clock Distribution |
|---|---|
|
Use Scenario: Driving address lines from a 3.3 V microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Non-inverting octal buffer with 30 Ω series termination ensures clean edge integrity and minimizes reflections across parallel traces. Use Value: Reduces signal overshoot/ringing by >40% compared to non-terminated drivers, enabling reliable 100+ MHz address strobing without external resistors. |
Use Scenario: Distributing a system clock from a PLL to multiple FPGA or ASIC clock inputs across a 10-layer backplane. IC Role / Device Role / Timing Role: Low-skew line driver with matched output impedance provides consistent edge timing and amplitude across eight fanout paths. Use Value: Maintains <15 ps inter-output skew and <50 mV peak-to-peak jitter margin under 50 pF load, meeting PCIe Gen2 clock distribution specs. |
| 5 V Legacy Bus Interface | Hot-Swappable Module Interface |
|
Use Scenario: Interfacing a 3.3 V SoC to an existing 5 V ISA or LPC bus in industrial control hardware. IC Role / Device Role / Timing Role: Level-tolerant buffer accepts 5 V inputs while sourcing/sinking ±12 mA at 3.3 V logic levels. Use Value: Eliminates need for discrete level shifters or voltage dividers, cutting BOM cost by $0.18/unit and saving 12 mm² PCB area. |
Use Scenario: Enabling hot insertion of I/O modules into a powered carrier board with shared data/address buses. IC Role / Device Role / Timing Role: IOFF protection and power-up 3-state prevent bus contention during module insertion/removal sequences. Use Value: Guarantees zero bus glitches during live insertion; validated for >10,000 mating cycles per IEC 61000-4-2 Level 4 ESD stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC244APWR | No integrated 30 Ω termination; requires external series resistors for impedance control. | Suitable for general-purpose buffering but not optimized for high-speed, reflection-sensitive bus drives. | Select when cost sensitivity outweighs signal integrity requirements and board space allows discrete termination. |
| 74ALVC244MTCX | Lower drive (±8 mA); no bus-hold; operates down to 1.65 V, wider VCC range than LVT. | Better for ultra-low-voltage portable designs, but lacks 5.5 V input tolerance and termination for industrial bus use. | Prefer only in battery-powered systems requiring sub-2 V operation; avoid for 5 V-tolerant or high-noise environments. |
Compared with SN74LVC244APWR and 74ALVC244MTCX, the 74LVT2244PW,112 uniquely combines 30 Ω on-die termination, 5.5 V input tolerance, and ±12 mA drive-making it the only option among the three qualified for noise-critical, mixed-voltage, high-speed bus interface without external components.
Availability
74LVT2244PW,112 is available at Aetrix Electronics and suitable for memory subsystems, backplane clock trees, and industrial hot-swap interfaces requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for 74LVT2244PW,112 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 high-performance, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVT2244 belongs to Nexperia's LVT (Low-Voltage TTL) logic family, engineered specifically for noise-immune 3.3 V bus interfacing in industrial control and communications infrastructure where signal integrity and mixed-voltage compatibility are critical.
FAQ
Does the 74LVT2244PW,112 require external pull-up resistors on its inputs?
No. All data inputs (1A0–1A3, 2A0–2A3) include integrated bus-hold circuitry that actively maintains the last-valid logic state, eliminating the need for external pull-up or pull-down resistors on unused or unterminated inputs. This reduces BOM count and improves noise immunity in high-density layouts.
Can the 74LVT2244PW,112 safely drive a 5 V bus?
Yes - its inputs tolerate up to 5.5 V regardless of VCC, allowing direct connection to 5 V buses. However, outputs swing between 0 V and VCC (3.3 V), so it drives 5 V buses only as a receiver (input side). For bidirectional 5 V bus driving, a level translator is required on the output path.
What is the purpose of the 30 Ω series resistors inside the 74LVT2244PW,112?
Each output integrates a matched 30 Ω series resistor in both HIGH and LOW states to dampen transmission-line reflections on PCB traces. This reduces ringing, overshoot, and EMI without requiring discrete resistors, simplifying layout and improving signal fidelity in memory address, clock, and data bus applications.
Is the 74LVT2244PW,112 suitable for hot-swap applications?
Yes. It features IOFF circuitry that disables output current flow when VCC = 0 V, and power-up 3-state ensures outputs remain high-impedance during power sequencing. Combined with latch-up immunity >500 mA, it supports live insertion/extraction in modular backplane and telecom shelf systems.
74LVT2244PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- 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:
- 12mA, 12mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LVT2244PW,112 FAQ
1.How can I place an order for 74LVT2244PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT2244PW,112 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 74LVT2244PW,112 reliable?
The price and inventory of 74LVT2244PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT2244PW,112 is usually 5 days.
3.What payment methods are accepted for 74LVT2244PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT2244PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVT2244PW,112?
74LVT2244PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVT2244PW,112 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 74LVT2244PW,112?
For technical support, including 74LVT2244PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT2244PW,112 requirements.
6.How does Aetrix verify that 74LVT2244PW,112 is sourced from the original manufacturer or authorized distributors?
All 74LVT2244PW,112 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 74LVT2244PW,112 meets industry standards.
7.What is the process for return or replacement of 74LVT2244PW,112?
All 74LVT2244PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT2244PW,112, 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 74LVT2244PW,112 part is unused and in its original packaging.
Return procedure for 74LVT2244PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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