My Inquiry
My Account
Nexperia USA Inc. 74LVT2244D,118
- Part No.:
- 74LVT2244D,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LVT2244D,118.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,670
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74LVT2244D,118 from Nexperia is a 3.3 V octal 3-state buffer/line driver with integrated 30 Ω series output termination resistors, designed for high-speed memory address and clock bus driving in industrial embedded systems. It features dual independent 4-bit sections (1A/1Y and 2A/2Y), two active-low output enables (1OE, 2OE), bus hold on all inputs, and ±12 mA drive capability at 3.3 V.
For engineers reviewing the 74LVT2244D,118 datasheet, 74LVT2244D,118 pinout, 74LVT2244D,118 application, or 74LVT2244D,118 equivalent, key selection criteria include its 30 Ω on-die termination for noise reduction, overvoltage-tolerant 5.5 V inputs, IOFF partial power-down support, and SO20 (SOT163-1) package compatibility with legacy LVT logic layouts.
Technical Context
The 74LVT2244D implements BiCMOS output stages with matched 30 Ω series resistance in both HIGH and LOW states-verified per Figure 3-enabling direct connection to transmission lines without external termination. Its dual 4-bit architecture allows independent control of two 4-bit buses via separate 1OE and 2OE signals.
Bus hold circuitry maintains defined logic states on unused inputs without external pull-ups, while IOFF protection ensures low leakage (<±100 μA) when VCC = 0 V, supporting live insertion and hot-swap operation. Input tolerance up to 5.5 V permits interfacing with 5 V TTL systems while operating from a 3.3 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - Enables stable operation across industrial voltage tolerances and brown-out conditions. |
| Output Drive | ±12 mA - Sufficient to drive four 50 Ω transmission lines simultaneously without signal degradation. |
| Propagation Delay | 1.0–4.4 ns (VCC = 3.0–3.6 V) - Supports >200 MHz bus timing in memory and clock distribution paths. |
| Input Voltage Range | 0 V to 5.5 V - Allows direct interface with 5 V TTL logic without level shifters. |
| Termination Resistance | 30 Ω (series, both states) - Reduces ringing and overshoot on PCB traces up to 15 cm in length. |
| Operating Temperature | −40 °C to +85 °C - Qualified for extended industrial ambient environments. |
| Bus Hold Current | ±75–150 μA - Maintains valid logic levels on floating inputs without external components. |
Pinout & Package
74LVT2244D,118 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads and 7.5 mm body width, optimized for surface-mount reflow assembly and legacy footprint compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low enable controls for Group 1 (pins 2,4,6,8 → 1Y0–1Y3) and Group 2 (pins 11,13,15,17 → 2Y0–2Y3). |
| 2,4,6,8 | 1A0–1A3 | Data inputs for first 4-bit buffer section; feature bus hold and 5.5 V tolerant inputs. |
| 11,13,15,17 | 2A0–2A3 | Data inputs for second 4-bit buffer section; identical electrical characteristics to 1A group. |
| 12,14,16,18 | 1Y0–1Y3 | 3-state outputs with integrated 30 Ω series termination; driven by 1A inputs when 1OE = LOW. |
| 3,5,7,9 | 2Y0–2Y3 | 3-state outputs with integrated 30 Ω series termination; driven by 2A inputs when 2OE = LOW. |
| 10 | GND | Ground reference for all I/O and internal circuitry; requires low-inductance PCB return path. |
| 20 | VCC | 3.3 V supply input; decoupling capacitor (100 nF) required within 5 mm of pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω Output Termination | Eliminates need for eight discrete series resistors, reducing BOM count and PCB area in high-density bus designs. |
| Dual Independent 4-bit Control | Enables selective buffering of two separate data lanes (e.g., address vs. control) using dedicated OE pins. |
| Bus Hold Inputs | Prevents floating inputs from oscillating or drawing excess current-critical for unpopulated or configurable bus segments. |
| IOFF Partial Power-Down | Restricts leakage to <±100 μA when VCC = 0 V, allowing safe insertion into powered-backplane systems. |
| Overvoltage-Tolerant Inputs | Accepts 0–5.5 V logic levels regardless of VCC state, enabling mixed-voltage system interoperability without translators. |
Applications
| Memory Address Bus Driver | High-Speed Clock Distribution |
|---|---|
|
Use Scenario: Driving 8-bit address lines from an FPGA or microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Bidirectional buffer with controlled edge rates and on-die termination to suppress reflections on parallel address traces. Use Value: Eliminates external 30 Ω resistors per line and prevents address glitches caused by unterminated stubs longer than 5 cm. |
Use Scenario: Distributing a 100 MHz system clock to three synchronous peripherals (ADC, DAC, FPGA) with matched trace lengths. IC Role / Device Role / Timing Role: Low-skew, terminated line driver ensuring monotonic edges and minimal jitter accumulation across fanout nodes. Use Value: Achieves <100 ps inter-output skew and reduces EMI by 8 dB compared to non-terminated drivers at 100 MHz. |
| Industrial Backplane Interface | Legacy TTL-to-LVT Logic Bridge |
|
Use Scenario: Interfacing a 3.3 V controller to a 5 V backplane with daisy-chained peripheral slots requiring hot-plug support. IC Role / Device Role / Timing Role: Level-translating buffer with IOFF and bus hold, enabling safe insertion while maintaining bus integrity. Use Value: Prevents bus contention during hot-swap events and eliminates need for external pull-ups on unpopulated slot connectors. |
Use Scenario: Replacing obsolete 74ACT244 in a legacy test equipment design where 5 V TTL inputs must drive 3.3 V LVT loads. IC Role / Device Role / Timing Role: Drop-in-compatible voltage-tolerant buffer preserving existing PCB layout and timing margins. Use Value: Maintains sub-5 ns propagation delay and supports same 5 V input swing while reducing supply current by 40%. |
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 |
|---|---|---|---|
| 74LVT2244PW,118 | TSSOP20 (SOT360-1) package; 4.4 mm body width; identical electrical specs and pinout. | Better thermal performance in high-density layouts; requires finer-pitch reflow profile. | Select for space-constrained PCBs where SO20 footprint is unavailable. |
| SN74LVC244APWR | 3.3 V only (no 5.5 V input tolerance); 24 mA drive; no integrated termination; different pinout. | Lacks on-die 30 Ω resistors and bus hold; requires external termination and pull-ups. | Choose only if higher drive strength is needed and board-level termination is acceptable. |
Compared with 74LVT2244D,118, the PW variant offers identical functionality in a smaller footprint but tighter assembly requirements, while the SN74LVC244APWR trades integrated termination and input tolerance for higher output current-making it unsuitable as a drop-in replacement without layout and schematic changes.
Availability
74LVT2244D,118 is available at Aetrix Electronics and suitable for industrial control systems, memory subsystems, and high-speed digital instrumentation requiring stable component supply, long-term lifecycle assurance, and SO20 footprint compatibility.
Supply support for 74LVT2244D,118 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, reliable logic, analog, and MOSFET solutions for industrial, automotive, and consumer markets.
The 74LVT2244 belongs to Nexperia's LVT (Low-Voltage TTL) logic family, engineered specifically for noise-immune, high-speed 3.3 V bus interfacing with backward compatibility to 5 V systems.
FAQ
What is the purpose of the 30 Ω series termination in the 74LVT2244D,118?
The 30 Ω series termination is integrated into each output stage to match typical PCB trace impedance (50–75 Ω) and suppress signal reflections. It reduces ringing and overshoot on memory address and clock lines up to 15 cm long, eliminating the need for eight discrete resistors and improving signal integrity without altering layout.
Can 74LVT2244D,118 be used with a 5 V microcontroller outputting to its inputs?
Yes-the inputs are overvoltage tolerant up to 5.5 V regardless of VCC level. When powered from 3.3 V, the device accepts standard 5 V TTL logic levels (VIH ≥ 2.0 V, VIL ≤ 0.8 V) directly, enabling seamless interface with legacy 5 V controllers without level-shifting circuitry.
How does bus hold functionality operate on unused inputs?
Bus hold circuitry applies weak feedback (IBHL = +75 μA, IBHH = −75 μA at 3 V) to maintain the last valid logic state on floating inputs. This prevents undefined states, reduces EMI from oscillating inputs, and removes the need for external pull-up or pull-down resistors on unconnected data lines.
Is the 74LVT2244D,118 suitable for hot-swap applications?
Yes-its IOFF circuitry limits power-off leakage to <±100 μA when VCC = 0 V, and the bus hold function maintains defined states during insertion. Combined with live-insertion-rated packaging and latch-up immunity (>500 mA), it supports safe hot-plug operation in modular backplane systems.
74LVT2244D,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-SO
74LVT2244D,118 FAQ
1.How can I place an order for 74LVT2244D,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT2244D,118 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 74LVT2244D,118 reliable?
The price and inventory of 74LVT2244D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT2244D,118 is usually 5 days.
3.What payment methods are accepted for 74LVT2244D,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT2244D,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVT2244D,118?
74LVT2244D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVT2244D,118 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 74LVT2244D,118?
For technical support, including 74LVT2244D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT2244D,118 requirements.
6.How does Aetrix verify that 74LVT2244D,118 is sourced from the original manufacturer or authorized distributors?
All 74LVT2244D,118 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 74LVT2244D,118 meets industry standards.
7.What is the process for return or replacement of 74LVT2244D,118?
All 74LVT2244D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT2244D,118, 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 74LVT2244D,118 part is unused and in its original packaging.
Return procedure for 74LVT2244D,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVT2244D,118 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
