NXP Semiconductors 74LVT2241DB,112
- Part No.:
- 74LVT2241DB,112
- Manufacturer:
- NXP Semiconductors
- Package:
- -
- Datasheet:
-
74LVT2241DB,112.pdf
- Description:
- IC BUFF/DVR TRI-ST QUAD 20SSOP
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Product details
Overview
74LVT2241DB,112 from Nexperia is a 3.3 V octal 3-state buffer/line driver with integrated 30 Ω series output termination resistors, dual independent output enables (1OE active LOW, 2OE active HIGH), bus hold inputs eliminating external pull-ups, and ±12 mA drive capability. It operates from 2.7 V to 3.6 V and supports mixed-voltage interfacing with 5 V systems.
For engineers reviewing the 74LVT2241DB,112 datasheet, 74LVT2241DB,112 pinout, 74LVT2241DB,112 application, or 74LVT2241DB,112 equivalent, this device is selected for high-speed parallel bus buffering in industrial control backplanes, FPGA I/O expansion interfaces, and legacy TTL-to-LVTTL level translation where on-die termination and bus hold simplify PCB layout and improve signal integrity.
Technical Context
The 74LVT2241DB,112 implements two independent 4-bit buffered paths: Group 1 (1A0–1A3 → 1Y0–1Y3, controlled by 1OE) and Group 2 (2A0–2A3 → 2Y0–2Y3, controlled by 2OE). Each output integrates a 30 Ω series resistor to match typical PCB trace impedance, reducing reflections without external components.
Bus hold circuitry maintains valid logic states on unused inputs with ±75 μA to ±150 μA holding current, while IOFF protection limits leakage during partial power-down. Propagation delays are as low as 1.0 ns (tPLH/tPHL at VCC = 3.3 V), and outputs tolerate up to 5.5 V input voltage regardless of supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - Enables stable operation across LVTTL rail tolerances and brown-out conditions. |
| Output Drive | ±12 mA - Sufficient to drive four LVTTL loads or one 50 Ω transmission line. |
| Propagation Delay | 1.0–4.3 ns (tPLH/tPHL at 3.3 V) - Supports >200 MHz data rates in point-to-point bus applications. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct connection to 5 V logic without level shifters. |
| Series Termination | 30 Ω per output - Matches common PCB trace impedances, eliminating discrete termination resistors. |
| Bus Hold Current | ±75 μA to ±150 μA - Maintains defined logic state on floating inputs without external biasing. |
| Operating Temperature | −40 °C to +85 °C - Qualified for industrial ambient environments. |
Pinout & Package
74LVT2241DB,112 is packaged in a plastic thin shrink small outline package (TSSOP20), SOT360-1, with 20 leads and 4.4 mm body width. Pin 1 is marked by a dot or beveled corner; pin numbering proceeds counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OE | Active-LOW enable for outputs 1Y0–1Y3; asserts high-impedance when HIGH. |
| 2 | VCC | Main 3.3 V supply; decoupling capacitor required near this pin. |
| 3–4,6–8 | 2Y0–2Y3, 1A0–1A3 | Group 2 outputs (3,5,7,9) and Group 1 inputs (2,4,6,8); bidirectional signal routing not supported. |
| 9–11,13–15 | 1Y0–1Y3, 2A0–2A2 | Group 1 outputs (18,16,14,12) and Group 2 inputs (17,15,13,11); note physical pin reordering vs logical grouping. |
| 10 | GND | Ground reference for all I/O and internal circuitry; low-inductance connection critical. |
| 19 | 2OE | Active-HIGH enable for outputs 2Y0–2Y3; asserts high-impedance when LOW. |
| 20 | VCC | Second supply pin - both VCC pins must be connected to same 3.3 V rail. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state controls | 1OE (active LOW) and 2OE (active HIGH) allow asymmetric enable timing and selective group isolation. |
| Integrated 30 Ω series termination | Eliminates need for eight external 30 Ω resistors, reducing BOM count and board area in high-pin-count buffers. |
| Bus hold inputs | Prevents floating inputs from drifting into undefined logic states, removing requirement for 10 kΩ pull-up/down resistors. |
| 5 V tolerant inputs | Enables direct interface with legacy 5 V microcontrollers, CPLDs, or memory buses without level-shifting ICs. |
| IOFF partial power-down | Restricts off-state leakage to ±100 μA when VCC = 0 V, supporting hot-swap and power-gating designs. |
Applications
| Industrial Backplane Buffering | FPGA I/O Expansion Interface |
|---|---|
Use Scenario: Isolating and driving parallel address/data buses between PLC CPU modules and I/O carrier boards operating at different supply voltages. IC Role / Device Role / Timing Role: Bidirectional buffer with independent group enables synchronizing read/write strobes and preventing bus contention during module hot-swap. Use Value: Integrated 30 Ω termination ensures clean edge integrity over 15 cm FR-4 traces; bus hold prevents glitches during insertion/removal sequences. |
Use Scenario: Extending FPGA GPIO banks to drive multiple peripheral devices (ADCs, DACs, sensors) requiring LVTTL-compatible timing and drive strength. IC Role / Device Role / Timing Role: Unidirectional line driver translating FPGA core logic levels (3.3 V) to external peripherals while maintaining setup/hold margins. Use Value: ±12 mA drive sustains 2 ns rise/fall times into 50 pF loads; 5 V input tolerance allows direct connection to peripherals with 5 V outputs. |
| TTL-to-LVTTL Level Translation | Memory Address Latching Interface |
Use Scenario: Interfacing legacy 5 V TTL microcontrollers with modern 3.3 V ASICs or SoCs in test equipment and instrumentation. IC Role / Device Role / Timing Role: Voltage-tolerant buffer enabling safe signal passage without level shifters or clamping diodes. Use Value: Input clamping voltage of −0.9 V prevents damage from negative transients; propagation delay variation <0.3 ns across voltage range ensures deterministic timing. |
Use Scenario: Driving multiplexed address lines from a microcontroller to dual-bank SRAM or Flash memory in embedded controllers. IC Role / Device Role / Timing Role: Octal buffer providing fanout and noise immunity for address bus signals shared across multiple memory chips. Use Value: Low ICC (0.19 mA max) minimizes static power in always-on address path; tPZH/tPHZ <6.2 ns enables reliable latching at 50 MHz clock rates. |
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 |
|---|---|---|---|
| 74LVT244PW,118 | Single OE control (active LOW) for all 8 outputs; no 30 Ω series termination; identical VCC range and drive. | Lacks per-group enable and on-die termination - requires external resistors and cannot isolate half-bus segments. | Select when full-bus enable suffices and board space permits discrete termination. |
| SN74LVC244APWR | 3.3 V only (1.65–3.6 V), no 5 V input tolerance, no bus hold, no integrated termination; lower ICC (10 μA). | Not suitable for 5 V system interfacing or unconnected inputs; requires external pull-ups and termination. | Select only in fully 3.3 V systems with controlled I/O states and tight power budgets. |
Compared with 74LVT2241DB,112, the 74LVT244PW,118 sacrifices group-level control and termination for cost reduction, while SN74LVC244APWR trades robustness (5 V tolerance, bus hold) for ultra-low static current - neither matches the integrated signal integrity features of the 74LVT2241DB,112 in mixed-voltage industrial interfaces.
Availability
74LVT2241DB,112 is available at Aetrix Electronics and suitable for industrial backplane buffering, FPGA I/O expansion, TTL-to-LVTTL level translation, and memory address latching requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for 74LVT2241DB,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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer applications.
The 74LVT2241 belongs to Nexperia's LVT family of BiCMOS 3.3 V logic devices engineered for high-speed, low-noise parallel bus interfacing in mixed-voltage systems with stringent signal integrity requirements.
FAQ
What is the function of the two separate output enables (1OE and 2OE)?
1OE (pin 1) is an active-LOW enable controlling outputs 1Y0–1Y3, while 2OE (pin 19) is an active-HIGH enable controlling outputs 2Y0–2Y3. This dual-enable architecture allows independent gating of two 4-bit data groups - for example, enabling write data on one group while disabling read data on the other to prevent bus contention in bidirectional systems.
Can 74LVT2241DB,112 safely interface with 5 V logic outputs?
Yes - all inputs tolerate up to 5.5 V regardless of VCC, and the device draws no current from 5 V sources when outputs are disabled. This allows direct connection to 5 V microcontrollers, memory chips, or FPGAs without level shifters, provided the 74LVT2241DB,112's VCC remains within 2.7–3.6 V.
How does the integrated 30 Ω series termination improve signal integrity?
Each output includes a monolithic 30 Ω series resistor that matches typical PCB microstrip impedances (45–60 Ω). This damps reflections at the source, reducing overshoot, undershoot, and ringing on traces longer than 1/6 wavelength of the signal's highest frequency component - eliminating eight discrete resistors and associated layout complexity.
Is bus hold functionality enabled by default, and what does it replace?
Bus hold is intrinsic to all data input pins (1A0–1A3, 2A0–2A3) and requires no configuration. It provides ±75 μA to ±150 μA holding current to maintain the last-valid logic state on unused or unterminated inputs - replacing external 10 kΩ pull-up or pull-down resistors and preventing metastability in unconnected I/O scenarios.
74LVT2241DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
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- Mounting Type:
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- Supplier Device Package:
- -
74LVT2241DB,112 FAQ
1.How can I place an order for 74LVT2241DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT2241DB,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 74LVT2241DB,112 reliable?
The price and inventory of 74LVT2241DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT2241DB,112 is usually 5 days.
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5.How can I obtain technical support or documentation for 74LVT2241DB,112?
For technical support, including 74LVT2241DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT2241DB,112 requirements.
6.How does Aetrix verify that 74LVT2241DB,112 is sourced from the original manufacturer or authorized distributors?
All 74LVT2241DB,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 74LVT2241DB,112 meets industry standards.
7.What is the process for return or replacement of 74LVT2241DB,112?
All 74LVT2241DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT2241DB,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 74LVT2241DB,112 part is unused and in its original packaging.
Return procedure for 74LVT2241DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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