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Nexperia USA Inc. 74LV244D,112
- Part No.:
- 74LV244D,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LV244D,112.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,785
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Product details
Overview
74LV244D,112 from Nexperia is an octal 3-state buffer/line driver in SO20 (SOT163-1) package, configured as two independent 4-bit buffers with separate active-low output enables (1OE, 2OE). It operates from 1.0 V to 5.5 V, delivers 8 ns propagation delay at 3.3 V/15 pF, and supports TTL-level inputs at VCC ≥ 2.7 V. Used for bidirectional bus interfacing in industrial control backplanes.
For engineers reviewing the 74LV244D,112 datasheet, 74LV244D,112 pinout, 74LV244D,112 application, or 74LV244D,112 equivalent, this page provides verified pin functions, temperature-rated static/dynamic specs, SO20 package mechanical data, and direct functional alternatives for voltage-scalable bus buffering.
Technical Context
The 74LV244D implements dual-group CMOS buffer logic with independent 3-state control: pins 1 and 19 serve as 1OE and 2OE, each enabling four outputs (1Y0–1Y3 and 2Y0–2Y3). Inputs include clamp diodes enabling safe overvoltage interface with current-limiting resistors.
It complies with JEDEC standards JESD8-7 (1.65–1.95 V), JESD8-5 (2.3–2.7 V), JESD8C (2.7–3.6 V), and JESD36 (4.5–5.5 V), and guarantees operation across -40 °C to +125 °C ambient range with latch-up immunity >100 mA per JESD78 Class II Level B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.0 V to 5.5 V - Enables single-supply operation in mixed-voltage systems from ultra-low-power (1.2 V) to 5 V legacy rails. |
| Propagation Delay (tpd) | 8 ns at VCC = 3.3 V, CL = 15 pF - Supports >100 MHz bus toggle rates in high-speed digital interfaces. |
| Output Drive Strength | ±8 mA at VCC = 3.0 V (VOH/VOL) - Sufficient to drive 50 pF loads with <0.4 V ground bounce (VOLP < 0.8 V). |
| Input Voltage Thresholds | VIH = 2.0 V min at VCC = 2.7–3.6 V; VIL = 0.8 V max - Ensures reliable TTL compatibility without level shifters. |
| 3-State Leakage (IOZ) | ≤10 μA at VCC = 3.6 V - Minimizes bus contention current during output disable in shared-bus architectures. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive modules and industrial PLC I/O expansion cards. |
Pinout & Package
74LV244D,112 uses the SO20 plastic small outline package (SOT163-1), 20-pin, 7.5 mm body width, 1.27 mm pitch, with gull-wing leads and pin 1 index marker.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low enable inputs controlling Y0–Y3 groups independently; asserted LOW enables respective 4-bit outputs. |
| 2, 4, 6, 8 | 1A0–1A3 | First group of data inputs feeding 1Y0–1Y3; compatible with 1.2–5.5 V logic levels. |
| 3, 5, 7, 9 | 2Y0–2Y3 | Second group of 3-state outputs; high-impedance when 2OE = HIGH. |
| 10 | GND | Reference ground for all I/O and supply; must be low-inductance connection to minimize switching noise. |
| 11, 13, 15, 17 | 2A0–2A3 | Second group of data inputs; electrically isolated from 1Ax group except via shared VCC/GND. |
| 12, 14, 16, 18 | 1Y0–1Y3 | First group of 3-state outputs; driven only when 1OE = LOW. |
| 20 | VCC | Single power supply input; decoupling capacitor (100 nF) required within 5 mm of pin for stable 3.3 V operation. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range (1.0–5.5 V) | Eliminates need for external level shifters when interfacing 1.8 V microcontrollers to 3.3 V or 5 V peripherals. |
| TTL-input compatibility (2.7–3.6 V) | Accepts standard 0.8 V/2.0 V TTL thresholds without pull-ups, simplifying legacy system upgrades. |
| Clamp diode-equipped inputs | Allows safe interface to voltages up to VCC + 0.5 V using series current-limiting resistors (e.g., 1 kΩ). |
| Low dynamic power (CPD = 35 pF) | Reduces switching power by >40% vs. older 74HC244 at 3.3 V, critical for thermally constrained PCB layouts. |
| High ESD robustness (HBM >2000 V) | Withstands handling and board-level ESD events without protection circuitry, lowering BOM cost. |
Applications
| Industrial PLC Backplane | Embedded Microcontroller Bus Expansion |
|---|---|
|
Use Scenario: Isolating and driving parallel address/data buses between CPU module and I/O expansion slots in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Bidirectional bus buffer with independent OE control, enabling time-multiplexed access to multiple peripheral modules on shared 8-bit data lines. Use Value: 8 ns tpd ensures setup/hold timing margins at 25 MHz bus clock; ±8 mA drive sustains signal integrity across 15 cm FR-4 traces. |
Use Scenario: Extending GPIO count of ARM Cortex-M0+ MCU by connecting parallel LCD controller or SRAM memory interface. IC Role / Device Role / Timing Role: Unidirectional line driver translating 1.8 V GPIO outputs to 3.3 V logic levels while providing bus isolation during sleep mode. Use Value: 1.0 V minimum VCC allows direct use with battery-backed 1.2 V LDO; 10 μA IOZ prevents leakage-induced wakeups. |
| Automotive Body Control Module | Test Equipment Digital I/O Card |
|
Use Scenario: Driving multiplexed LED indicators and relay drivers from a CAN-connected microcontroller in under-dash BCM units. IC Role / Device Role / Timing Role: High-reliability buffer stage with -40 °C to +125 °C qualification, isolating MCU pins from inductive load transients. Use Value: Latch-up immunity >100 mA protects against load dump spikes; 2.0 V VIH threshold ensures noise margin in noisy 12 V vehicle environments. |
Use Scenario: Configurable digital stimulus/response channel on modular ATE boards requiring programmable bus direction and voltage translation. IC Role / Device Role / Timing Role: Reconfigurable 8-bit buffer with dual OE inputs, enabling software-selectable input/output grouping for test pattern generation. Use Value: Dual OE architecture allows real-time reconfiguration of 4-bit sub-buses without hardware changes; SO20 footprint supports automated optical inspection. |
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 |
|---|---|---|---|
| 74LVC244APW,118 | Lower VCC min (1.2 V), higher speed (5.5 ns @ 3.3 V), TSSOP20 only | Better suited for space-constrained high-speed designs; lacks SO20 option | Select if board layout requires TSSOP and propagation delay <6 ns is mandatory |
| SN74LV244ADWR | TI variant with identical SO20 pinout but tighter VOH/VOL specs (2.4 V/0.25 V @ 8 mA) | Preferred for noise-sensitive analog-digital hybrid systems needing stricter DC margins | Select if interfacing with precision ADC reference buffers requiring guaranteed 2.4 V logic high |
Compared with 74LV244D,112, the 74LVC244APW offers faster switching in smaller TSSOP20 but sacrifices SO20 availability, while SN74LV244ADWR provides tighter DC output specs at equal speed and package-making it preferable where voltage margin is critical over raw speed.
Availability
74LV244D,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, embedded microcontroller bus expansion, and test equipment digital I/O cards requiring stable component supply across extended temperature ranges.
Supply support for 74LV244D,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-volume, high-reliability logic, discrete, and MOSFET solutions, with manufacturing rooted in process optimization and automotive-grade quality systems.
The 74LV logic family targets low-voltage, mixed-signal interfacing applications-designed specifically for seamless integration between modern sub-2 V processors and legacy 3.3 V/5 V peripherals while maintaining industrial temperature resilience.
FAQ
Can 74LV244D,112 operate reliably at 1.2 V supply?
Yes. The device is fully specified down to VCC = 1.2 V for DC characteristics and functional operation, with propagation delay increasing to 50 ns at that voltage. Input thresholds scale with VCC, ensuring correct logic interpretation across the full 1.0–5.5 V range.
What is the maximum capacitive load the outputs can drive at 3.3 V?
At VCC = 3.3 V, the outputs maintain specified VOL ≤ 0.4 V and VOH ≥ 2.4 V while sourcing/sinking 8 mA into a 15 pF load, per JEDEC-compliant test conditions. For heavier loads (>50 pF), derate output current or add series termination to limit ringing.
Does 74LV244D,112 require external pull-up resistors on OE pins?
No. OE pins are active-low CMOS inputs with negligible leakage (<1 μA); they default to high-impedance OFF-state when left unconnected. However, for deterministic startup behavior in noisy environments, tie 1OE and 2OE to VCC via 10 kΩ resistors unless actively controlled.
How does the input clamp diode affect interfacing with 5 V signals at 1.8 V VCC?
The internal clamp diodes allow safe interface to 5 V signals when a series current-limiting resistor (≥1 kΩ) is used-clamping excess voltage to VCC + 0.5 V. At VCC = 1.8 V, this limits input current to <20 mA, preventing damage while preserving logic levels.
74LV244D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LV
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- 16mA, 16mA
- Voltage - Supply:
- 1V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74LV244D,112 FAQ
1.How can I place an order for 74LV244D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV244D,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 74LV244D,112 reliable?
The price and inventory of 74LV244D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV244D,112 is usually 5 days.
3.What payment methods are accepted for 74LV244D,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV244D,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV244D,112?
74LV244D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV244D,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 74LV244D,112?
For technical support, including 74LV244D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV244D,112 requirements.
6.How does Aetrix verify that 74LV244D,112 is sourced from the original manufacturer or authorized distributors?
All 74LV244D,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 74LV244D,112 meets industry standards.
7.What is the process for return or replacement of 74LV244D,112?
All 74LV244D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV244D,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 74LV244D,112 part is unused and in its original packaging.
Return procedure for 74LV244D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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