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Nexperia USA Inc. 74LV244DB,118
- Part No.:
- 74LV244DB,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74LV244DB,118.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,904
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Product details
Overview
74LV244DB,118 from Nexperia is an octal 3-state buffer/line driver with dual independent output-enable controls (1OE and 2OE), designed for bidirectional bus interfacing in low-voltage digital systems. It operates across 1.0 V to 5.5 V supply, supports TTL-level inputs at VCC ≥ 2.7 V, and delivers propagation delays as low as 8 ns at VCC = 3.3 V with 15 pF load - enabling use in high-speed address/data buffering for microcontroller peripherals and FPGA I/O expansion.
For engineers reviewing the 74LV244DB,118 datasheet, 74LV244DB,118 pinout, 74LV244DB,118 application, or 74LV244DB,118 equivalent, key selection criteria include its dual 4-bit enable architecture, ±35 mA output drive capability, -40 °C to +125 °C temperature rating, and SO20 (SOT163-1) package compatibility with legacy 74-series footprint layouts.
Technical Context
The 74LV244DB,118 implements two independent 4-bit non-inverting buffer sections, each controlled by a dedicated active-low output-enable input (1OE for Y0–Y3, 2OE for Y4–Y7). Its CMOS input structure includes clamp diodes enabling safe interface to voltages exceeding VCC when used with current-limiting resistors.
Functional behavior follows standard 3-state logic: outputs enter high-impedance OFF-state when OE is HIGH; otherwise, outputs replicate corresponding A-inputs. Static DC characteristics are guaranteed from VCC = 1.2 V to 5.5 V, with VOH ≥ 2.40 V and VOL ≤ 0.40 V at VCC = 3.0 V driving 8 mA loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.0 V to 5.5 V - enables direct interface with 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| Propagation Delay (tpd) | 8 ns typical at VCC = 3.3 V, CL = 15 pF - supports >100 MHz data throughput in buffered address/data paths. |
| Output Drive Strength | ±35 mA - sufficient to drive multiple CMOS/TTL loads or moderate PCB trace capacitance without external buffers. |
| Operating Temperature | -40 °C to +125 °C - qualified for industrial and extended-temperature embedded control applications. |
| Input Clamp Diodes | Integrated - allows safe connection of inputs to voltages up to VCC + 0.5 V using series current-limiting resistors. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - reduces susceptibility to handling damage during assembly and field operation. |
| Power Dissipation | 500 mW max at Tamb ≤ 109 °C (SO20) - supports sustained operation in compact enclosures with limited airflow. |
Pinout & Package
74LV244DB,118 is packaged in SO20 (SOT163-1): plastic small outline, 20-pin, 7.5 mm body width, 1.27 mm pitch. Pin 1 marked with index notch; pin 10 = GND; pin 20 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output enable inputs - independently disable Group 1 (pins 18,16,14,12) or Group 2 (pins 3,5,7,9) outputs. |
| 2,4,6,8 | 1A0–1A3 | Group 1 data inputs - drive corresponding 1Yn outputs when 1OE = LOW. |
| 3,5,7,9 | 2Y0–2Y3 | Group 2 outputs - sourced from 2A0–2A3 inputs when 2OE = LOW. |
| 10 | GND | Ground reference - must be low-impedance connection to minimize ground bounce during switching. |
| 11,13,15,17 | 2A0–2A3 | Group 2 data inputs - drive corresponding 2Yn outputs when 2OE = LOW. |
| 12,14,16,18 | 1Y0–1Y3 | Group 1 outputs - sourced from 1A0–1A3 inputs when 1OE = LOW. |
| 20 | VCC | Supply voltage - bypass with 100 nF ceramic capacitor near pin to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit enables | Allows selective isolation of two bus segments - e.g., CPU address vs. peripheral data lines - reducing contention risk. |
| Wide 1.0 V to 5.5 V supply range | Eliminates need for separate voltage translators when interfacing mixed-supply subsystems (e.g., 1.8 V FPGA to 3.3 V memory). |
| TTL-compatible inputs at 2.7–3.6 V | Permits direct connection to legacy 3.3 V TTL outputs without pull-up resistors or level-shifting circuitry. |
| Low ground bounce (VOLP < 0.8 V) | Maintains signal integrity during simultaneous output switching - critical for noise-sensitive analog/digital coexistence. |
| JEDEC-compliant standards support | Meets JESD8-7, JESD8-5, JESD8C, JESD36 - ensures interoperability with industry-standard logic families across voltage bands. |
Applications
| Industrial PLC I/O Expansion | Microcontroller Bus Buffering |
|---|---|
|
Use Scenario: Isolating and driving 8-bit parallel I/O ports between a 3.3 V ARM Cortex-M controller and 24 V industrial sensors/actuators via optocouplers or level-shifted interfaces. IC Role / Device Role / Timing Role: Bidirectional bus buffer providing voltage domain separation, output current boosting, and 3-state control for shared bus arbitration. Use Value: Enables clean signal transmission across noisy factory-floor environments while supporting hot-swap-safe bus release via OE-controlled high-Z state. |
Use Scenario: Expanding GPIO count on a resource-constrained 1.8 V SoC by connecting external 8-bit GPIO expanders or LCD segment drivers. IC Role / Device Role / Timing Role: Unidirectional level-translating buffer that maintains timing integrity across VCC domains without adding propagation delay skew. Use Value: Delivers sub-10 ns tpd at 1.8 V supply - preserving setup/hold margins for synchronous peripherals operating at >50 MHz. |
| FPGA Configuration Interface | Legacy ISA/PCI Bus Isolation |
|
Use Scenario: Driving configuration data from a 3.3 V FPGA configuration PROM to a 2.5 V FPGA bank requiring precise timing alignment and low capacitive loading. IC Role / Device Role / Timing Role: Low-skew, low-capacitance buffer ensuring reliable bitstream loading under varying temperature and voltage conditions. Use Value: CI = 3.5 pF input capacitance minimizes loading on PROM outputs; VOH/VOL specs guarantee robust logic thresholds across full -40 °C to +125 °C range. |
Use Scenario: Isolating legacy 5 V ISA bus signals from modern 3.3 V host controllers in retro-computing or industrial PC upgrade modules. IC Role / Device Role / Timing Role: 3-state bus transceiver enabling safe bidirectional communication with automatic direction control via OE signals. Use Value: Accepts 5 V-tolerant inputs at VCC = 3.3 V (via clamp diodes + resistor), eliminating need for discrete protection networks. |
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 | TI part with identical pinout and function but tighter VOH/VOL specs at 3.3 V (VOH ≥ 2.9 V, VOL ≤ 0.55 V); higher ICC (max 40 μA vs. 20 μA). | Better noise margin in high-noise 3.3 V systems; less suitable for ultra-low-power battery-backed designs. | Prefer when system requires stronger output drive or higher noise immunity; verify thermal derating matches SO20 layout. |
| 74AHC244PW,118 | Nexperia AHC variant: faster tpd (5.5 ns @ 3.3 V), wider VCC (2–5.5 V), no 1.0–2.0 V operation; lacks 1.2 V static characterization. | Optimized for speed-critical 3.3 V/5 V applications; not usable below 2.0 V supply. | Select when propagation delay < 6 ns is mandatory and supply is stable ≥2.0 V; avoid for mixed-voltage or battery-depleted scenarios. |
Compared with SN74LVC244APWR and 74AHC244PW,118, the 74LV244DB,118 uniquely supports 1.0 V operation and offers superior low-voltage DC performance down to VCC = 1.2 V - making it the only choice for ultra-low-power or wide-input-voltage-range industrial sensor nodes.
Availability
74LV244DB,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller bus buffering, FPGA configuration interfaces, and legacy ISA/PCI bus isolation requiring stable component supply across extended temperature ranges.
Supply support for 74LV244DB,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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.
The 74LV logic family targets low-voltage, low-power digital interfacing - specifically engineered to replace legacy 74HC/HCT devices in battery-powered, industrial, and automotive-adjacent systems where supply flexibility and robustness are critical.
FAQ
Can 74LV244DB,118 operate reliably at 1.2 V supply?
Yes. The device is fully characterized and guaranteed for operation at VCC = 1.2 V, with VIH = 0.9 V and VIL = 0.3 V specified over -40 °C to +85 °C. Propagation delay increases to 50 ns at this voltage, but all DC parameters remain valid per Table 6.
What is the maximum capacitive load the outputs can drive?
The outputs are rated for CL ≤ 50 pF under recommended conditions (Table 9), with tpd and timing margins validated at 15 pF and 50 pF loads. Driving >50 pF may cause excessive rise/fall times or overshoot; add series termination if required.
Does 74LV244DB,118 support hot-swap insertion?
No. While it features input clamp diodes, the device lacks powered-off protection or Ioff specification. Applying signals to inputs or outputs while VCC = 0 V may cause latch-up or damage; always power VCC before asserting signals.
How does the dual OE architecture improve system design?
Independent 1OE and 2OE pins allow partitioning of the 8-bit bus into two isolated 4-bit groups - enabling concurrent read/write operations, reducing bus contention in multi-master systems, and simplifying timing analysis by decoupling enable timing paths.
74LV244DB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LV
- Package/Case:
- 20-SSOP (0.209", 5.30mm 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:
- 16mA, 16mA
- Voltage - Supply:
- 1V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
74LV244DB,118 FAQ
1.How can I place an order for 74LV244DB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV244DB,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 74LV244DB,118 reliable?
The price and inventory of 74LV244DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV244DB,118 is usually 5 days.
3.What payment methods are accepted for 74LV244DB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV244DB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV244DB,118?
74LV244DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV244DB,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 74LV244DB,118?
For technical support, including 74LV244DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV244DB,118 requirements.
6.How does Aetrix verify that 74LV244DB,118 is sourced from the original manufacturer or authorized distributors?
All 74LV244DB,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 74LV244DB,118 meets industry standards.
7.What is the process for return or replacement of 74LV244DB,118?
All 74LV244DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV244DB,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 74LV244DB,118 part is unused and in its original packaging.
Return procedure for 74LV244DB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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