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Nexperia USA Inc. 74LVC2244ADB,118
- Part No.:
- 74LVC2244ADB,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74LVC2244ADB,118.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,008
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Product details
Overview
74LVC2244ADB,118 from Nexperia is an octal 3-state buffer/line driver with dual independent output enables (1OE, 2OE), integrated 30 Ω series termination resistors on all outputs, 5 V tolerant I/O (up to 5.5 V), and operation from 1.2 V to 3.6 V supply. It functions as two 4-bit or one 8-bit buffer in mixed-voltage systems (e.g., 3.3 V logic interfacing to 5 V buses) and supports partial power-down via IOFF circuitry.
For engineers reviewing the 74LVC2244ADB,118 datasheet, 74LVC2244ADB,118 pinout, 74LVC2244ADB,118 application, or 74LVC2244ADB,118 equivalent, key selection considerations include its dual OE control per 4-bit group, Schmitt-trigger inputs for noise immunity, guaranteed -40 °C to +125 °C operation, and built-in series termination eliminating external resistors in high-speed bus driving.
Technical Context
The device implements two independent 4-bit non-inverting buffer sections, each controlled by a dedicated active-low output enable (1OE for Y0–Y3, 2OE for Y0'–Y3'). Its IOFF circuitry disables outputs and blocks backflow current when VCC = 0 V, enabling safe hot-insertion in powered-backplane systems.
Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at VCC = 3.3 V), tolerating slow-rising signals and reducing noise-induced switching. The 30 Ω series termination on each output minimizes signal reflections on transmission lines up to 100 MHz, supporting clean edge integrity without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - Enables direct interface with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic families. |
| I/O Voltage Tolerance | Up to 5.5 V - Allows safe connection to 5 V buses while powered from 3.3 V or lower supplies. |
| Propagation Delay (tpd) | 1.5 ns (min) to 5.5 ns (max) at VCC = 3.3 V - Supports >100 MHz data rates in point-to-point or stub-bus topologies. |
| Output Termination | Integrated 30 Ω series resistor per output - Eliminates need for discrete termination, saving PCB area and BOM cost. |
| IOFF Leakage | ±10 μA max at VCC = 0 V, VI/VO = 5.5 V - Prevents damaging back-current during partial power-down or hot-swap events. |
| Operating Temperature | -40 °C to +125 °C - Qualified for industrial and extended-temperature embedded control and automotive body electronics. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Robust handling in automated assembly and field-replaceable module environments. |
Pinout & Package
74LVC2244ADB,118 is packaged in SSOP20 (SOT339-1), a 20-lead plastic shrink small outline package with 0.65 mm lead pitch and 7.2 mm body width. Pin 1 is marked by a notch or dot; leads are gull-wing shaped for surface-mount reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE | Active-low output enable (Group 1) | Controls high-impedance state of outputs 1Y0–1Y3; driven LOW to enable, HIGH to disable. |
| 2OE | Active-low output enable (Group 2) | Controls high-impedance state of outputs 2Y0–2Y3; independent timing allows staggered bus release. |
| 1A0–1A3, 2A0–2A3 | Data inputs (two 4-bit groups) | CMOS/Schmitt-trigger inputs accept 1.2 V–5.5 V logic levels; no level-shifting IC required. |
| 1Y0–1Y3, 2Y0–2Y3 | Non-inverting buffered outputs | Each includes 30 Ω series resistor; drive capability: ±12 mA at VCC = 3.3 V. |
| VCC | Positive supply | Must be decoupled locally (e.g., 100 nF ceramic) near pin 20 to suppress switching noise. |
| GND | Ground reference | Pin 10 provides low-inductance return path; critical for maintaining signal integrity across all 8 outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit OE control | Enables selective bus arbitration: e.g., hold one 4-bit segment active while releasing the other to avoid contention. |
| Integrated 30 Ω series termination | Reduces PCB trace reflections without external components-verified effective up to 100 MHz on 50 Ω lines. |
| 5 V tolerant I/O with 1.2 V–3.6 V VCC | Eliminates external level shifters when interfacing 3.3 V microcontrollers to legacy 5 V peripherals (e.g., UART, GPIO expanders). |
| IOFF partial power-down protection | Blocks >99% of backflow current when VCC = 0 V, enabling safe insertion into live backplanes or hot-swap modules. |
| Schmitt-trigger inputs | Provides 0.3 V typical hysteresis at VCC = 3.3 V-rejects noise on long traces or unshielded cables in industrial I/O. |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
|
Use Scenario: Driving 8-channel 5 V sensor bus from a 3.3 V MCU in a programmable logic controller rack. IC Role / Device Role / Timing Role: Level-translating octal buffer with per-group OE control to isolate faulted channels without resetting entire bus. Use Value: Integrated 30 Ω termination ensures clean 10 MHz SPI-like clock/data edges over 15 cm ribbon cable; IOFF prevents damage during hot-swap of I/O cards. |
Use Scenario: Interfacing a 3.3 V body domain controller to 5 V LIN transceivers and lamp drivers in door module assemblies. IC Role / Device Role / Timing Role: Non-inverting buffer with Schmitt inputs to reject EMI from window motors and solenoids. Use Value: 5.5 V input tolerance withstands load-dump transients; -40 °C to +125 °C rating meets AEC-Q100 Grade 2 requirements for under-hood placement. |
| Test Equipment Signal Conditioning | Medical Diagnostic Data Acquisition |
|
Use Scenario: Buffering and terminating 8-bit parallel ADC output lines in automated test equipment with variable supply rails. IC Role / Device Role / Timing Role: High-speed line driver with matched propagation delay (<1.5 ns skew) across all 8 outputs. Use Value: 3.5 ns typical tpd at 3.3 V enables synchronous sampling at 100 MSPS; low ICC (10 μA) reduces thermal drift in precision analog front-ends. |
Use Scenario: Isolating ECG/EEG analog front-end digital control lines from 3.3 V FPGA while driving 5 V display and storage interfaces. IC Role / Device Role / Timing Role: Safe voltage translator with IOFF for emergency power-down during patient alarm conditions. Use Value: HBM >2000 V ESD rating protects against operator static discharge; 100 μA max ICC supports battery-powered portable design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC8T245RHLR | 8-bit bidirectional bus transceiver with direction control; no integrated termination; 3.6 V max VCC. | Requires external direction logic and series resistors; suited for full-duplex data exchange, not unidirectional buffering. | Select only if bidirectional data flow is required; adds complexity for simple unidirectional drive. |
| 74LVC244APW,118 | Same logic function but in TSSOP20 (SOT360-1); identical electrical specs; no SSOP variant listed in current Nexperia ordering info. | Same use cases; differs only in package footprint and thermal resistance (TSSOP has higher θJA than SSOP). | Choose 74LVC2244ADB,118 for space-constrained layouts requiring SSOP's narrower body (5.3 mm vs. 4.4 mm width). |
Compared with SN74LVC8T245RHLR, the 74LVC2244ADB,118 offers simpler unidirectional control and built-in termination-reducing layout effort for fixed-direction bus extension. Versus 74LVC244APW,118, it delivers identical functionality in a mechanically distinct SSOP package optimized for higher-density routing.
Availability
74LVC2244ADB,118 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, test equipment signal conditioning, and medical diagnostic data acquisition requiring stable component supply across extended temperature ranges and mixed-voltage interoperability.
Supply support for 74LVC2244ADB,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-volume, high-reliability logic, analog, and MOSFET solutions, with manufacturing rooted in process technology leadership and automotive-grade quality systems.
The 74LVC2244A family targets robust, low-power voltage translation and bus driving in industrial and automotive applications where mixed-supply interoperability, ESD resilience, and thermal stability are critical design constraints.
FAQ
What is the maximum input voltage the 74LVC2244ADB,118 can tolerate when VCC = 2.5 V?
The device supports 5.5 V tolerant inputs regardless of VCC level. When powered from 2.5 V, inputs may safely swing from 0 V to 5.5 V without damage or latch-up-enabling direct connection to 5 V sensors, switches, or legacy peripherals without external clamping diodes or level shifters.
Does the 74LVC2244ADB,118 require external pull-up or pull-down resistors on its output enable pins?
No. 1OE and 2OE are active-low CMOS inputs with standard logic thresholds (VIH ≥ 0.65×VCC, VIL ≤ 0.35×VCC). They may be driven directly from MCU GPIOs or open-drain controllers. Pull-up resistors are unnecessary unless implementing wired-OR enable logic with multiple sources.
Can the 74LVC2244ADB,118 drive a 50 Ω transmission line without external series resistors?
Yes. Each output integrates a 30 Ω series resistor optimized for use with 50 Ω PCB traces. When combined with typical PCB trace impedance (45–55 Ω), this achieves near-ideal source termination-verified in Nexperia's characterization for clean edges up to 100 MHz with <10% overshoot on 15 cm microstrip lines.
How does the IOFF feature behave during system power sequencing when VCC ramps after I/O signals are applied?
IOFF activates automatically when VCC drops below ~0.8 V. During power-up, outputs remain in high-impedance until VCC exceeds the minimum functional threshold (~1.2 V), preventing false outputs or bus contention. This behavior is tested per JEDEC JESD78 and guarantees safe operation in multi-rail systems with asynchronous power sequencing.
74LVC2244ADB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- 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:
- 12mA, 12mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
74LVC2244ADB,118 FAQ
1.How can I place an order for 74LVC2244ADB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC2244ADB,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 74LVC2244ADB,118 reliable?
The price and inventory of 74LVC2244ADB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2244ADB,118 is usually 5 days.
3.What payment methods are accepted for 74LVC2244ADB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC2244ADB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC2244ADB,118?
74LVC2244ADB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC2244ADB,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 74LVC2244ADB,118?
For technical support, including 74LVC2244ADB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2244ADB,118 requirements.
6.How does Aetrix verify that 74LVC2244ADB,118 is sourced from the original manufacturer or authorized distributors?
All 74LVC2244ADB,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 74LVC2244ADB,118 meets industry standards.
7.What is the process for return or replacement of 74LVC2244ADB,118?
All 74LVC2244ADB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2244ADB,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 74LVC2244ADB,118 part is unused and in its original packaging.
Return procedure for 74LVC2244ADB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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