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Nexperia USA Inc. 74LVCH244AD,118
- Part No.:
- 74LVCH244AD,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LVCH244AD,118.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,040
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Product details
Overview
74LVCH244AD,118 from Nexperia is an octal 3-state buffer/line driver with dual output enables (1OE, 2OE), bus-hold inputs, and overvoltage-tolerant inputs up to 5.5 V. It operates from 1.2 V to 3.6 V, supports mixed-voltage translation between 3.3 V and 5 V systems, and features IOFF partial power-down protection. Used in address/data bus interfacing for industrial microcontroller peripherals.
For engineers reviewing the 74LVCH244AD,118 datasheet, 74LVCH244AD,118 pinout, 74LVCH244AD,118 application, or 74LVCH244AD,118 equivalent, key selection criteria include bus-hold functionality, 1.2 V minimum supply compatibility, 3.6 V absolute max input tolerance, and SO20 package thermal performance at +125 °C ambient.
Technical Context
This device implements two independent 4-bit non-inverting buffers, each controlled by a dedicated active-low output enable (1OE for Y0–Y3, 2OE for Y0–Y3). All eight inputs feature Schmitt-trigger action and bus-hold circuitry-ensuring stable logic states without external pull-ups during floating conditions.
The IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current during partial power-down. Input voltage range extends to 5.5 V regardless of VCC, enabling robust level translation in heterogeneous voltage domains without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.2 V to 3.6 V - Enables operation in ultra-low-power IoT nodes and legacy 3.3 V systems. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct connection to 5 V logic without level shifters in mixed-supply designs. |
| Bus-Hold Current | ±75 μA at VCC = 3.0 V - Maintains valid logic state on un-driven data lines, eliminating external pull resistors. |
| Propagation Delay | 1.5 ns to 7.5 ns (VCC = 3.0–3.6 V) - Supports high-speed bus buffering up to ~133 MHz clock-equivalent timing. |
| IOFF Leakage | ±10 μA max at VCC = 0 V - Prevents damaging back-current during hot-swap or staggered power sequencing. |
| ESD Rating | HBM > 2000 V, CDM > 1000 V - Meets industrial IEC 61000-4-2 immunity requirements without added protection. |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood automotive, industrial PLC, and outdoor edge computing environments. |
Pinout & Package
74LVCH244AD,118 is supplied in SO20 (SOT163-1): plastic small outline package, 20 leads, 7.5 mm body width, standard JEDEC MS-013 footprint.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output enables - independently control first and second group of four outputs. |
| 2, 4, 6, 8 | 1A0–1A3 | Data inputs for first buffer group - accept 1.2–5.5 V signals with bus-hold and Schmitt-trigger. |
| 3, 5, 7, 9 | 2Y0–2Y3 | Outputs for second buffer group - drive loads up to ±24 mA with rail-to-rail swing. |
| 10 | GND | Ground reference - must be low-impedance return path for all I/O and supply currents. |
| 11, 13, 15, 17 | 2A0–2A3 | Data inputs for second buffer group - identical electrical behavior to 1A0–1A3. |
| 12, 14, 16, 18 | 1Y0–1Y3 | Outputs for first buffer group - electrically isolated from 2Y0–2Y3 when respective OE is HIGH. |
| 20 | VCC | Supply voltage - powers internal logic and output drivers; decoupling capacitor required at pin. |
Key Features
| Feature | Design Value |
|---|---|
| Bus-hold on all data inputs | Eliminates need for external pull-up/down resistors on bidirectional or shared bus lines. |
| IOFF partial power-down | Prevents current backflow when VCC is off, enabling safe hot-plug and power-gating in modular systems. |
| Overvoltage-tolerant inputs | Accepts 5 V signals while powered from 1.8 V or 2.5 V rails - simplifies inter-voltage-domain signal routing. |
| Schmitt-trigger inputs | Provides noise immunity against slow-rising or noisy signals (e.g., mechanical switch debouncing). |
| JEDEC-compliant voltage ranges | Validated per JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V). |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Isolating and driving address/data buses between MCU and peripheral ASICs across different voltage domains. IC Role / Device Role / Timing Role: Bidirectional bus buffer with independent enable control for time-multiplexed memory access. Use Value: Bus-hold maintains valid logic state during bus arbitration gaps; IOFF prevents leakage during sleep mode wake-up transitions. |
Use Scenario: Level-shifting sensor interface signals (e.g., LIN transceiver outputs) to 3.3 V MCU GPIOs. IC Role / Device Role / Timing Role: Unidirectional voltage translator with Schmitt-trigger input filtering for noisy automotive harnesses. Use Value: 5.5 V input tolerance accepts LIN bus transients; −40 °C to +125 °C rating ensures reliability in engine bay mounting. |
| Medical Diagnostic Equipment Data Acquisition | Network Edge Router Control Plane |
|
Use Scenario: Buffering parallel ADC/DAC control lines in multi-channel patient monitoring units. IC Role / Device Role / Timing Role: Low-skew (≤1.5 ns) 3-state driver enabling simultaneous sampling across 8 channels. Use Value: Propagation delay matching minimizes channel-to-channel timing skew; low ICC (≤40 μA) reduces standby power in battery-backed modules. |
Use Scenario: Driving configuration EEPROM and FPGA configuration pins from a 1.8 V management controller. IC Role / Device Role / Timing Role: High-drive (±24 mA) buffer ensuring fast rise/fall times on long PCB traces to remote devices. Use Value: 24 mA drive strength guarantees signal integrity on 10 cm+ traces; SO20 package allows manual rework in high-reliability repair workflows. |
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 |
|---|---|---|---|
| 74LVC244AD,118 | No bus-hold; identical pinout and VCC range; lower ICC (≤10 μA) | Lacks bus-hold - requires external pull resistors in floating-bus scenarios | Select when cost sensitivity outweighs need for bus stability; suitable for fixed-direction, always-driven buses. |
| SN74LVC8T245RHLR | 8-bit bidirectional translator with auto-direction control; 1.65–3.6 V only; no bus-hold | Supports bidirectional data flow without external direction logic; higher pin count (24-pin VQFN) | Choose for I²C/SPI peripheral expansion where direction switching is dynamic and space-constrained layouts favor VQFN. |
Compared with 74LVC244AD,118 and SN74LVC8T245RHLR, the 74LVCH244AD,118 uniquely combines bus-hold, 1.2 V operation, and 5.5 V input tolerance in a legacy-compatible SO20 package-making it optimal for retrofitting existing 3.3 V industrial designs requiring enhanced noise immunity and zero-component floating-bus support.
Availability
74LVCH244AD,118 is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, automotive body control modules, medical diagnostic data acquisition, and network edge router control plane designs requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for 74LVCH244AD,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 for automotive, industrial, and consumer markets.
The 74LVCH244A series belongs to Nexperia's advanced LVC logic family, engineered specifically for robust mixed-voltage system interfacing with emphasis on bus stability, power-down safety, and industrial temperature resilience.
FAQ
Does 74LVCH244AD,118 support 1.2 V operation with full timing specifications?
Yes. The device is fully characterized down to 1.2 V supply, with propagation delay ≤17.0 ns and enable/disable times specified across −40 °C to +125 °C. Static parameters including VIH/VIL and VOH/VOL meet JEDEC JESD8-7A at 1.65–1.95 V, but functional operation is guaranteed from 1.2 V.
Can 74LVCH244AD,118 safely interface a 5 V microcontroller GPIO to a 1.8 V FPGA input?
Yes - its inputs tolerate up to 5.5 V regardless of VCC, and its outputs swing rail-to-rail (0 V to VCC). When powered at 1.8 V, it drives the FPGA input with valid 0 V / 1.8 V levels while accepting the 5 V GPIO signal without damage or clamping diode conduction.
What is the purpose of the bus-hold circuit, and how does it affect PCB layout?
The bus-hold circuit maintains the last-valid logic state on each data input using weak feedback transistors (±75 μA at 3.0 V). This eliminates need for external pull-up/down resistors, reducing component count and board area - especially valuable in dense, high-pin-count control plane routing.
Is the SO20 package (SOT163-1) lead-free and RoHS compliant?
Yes. 74LVCH244AD,118 is manufactured in a lead-free, halogen-free, RoHS-compliant SO20 package per Nexperia's standard product definition. The SOT163-1 outline meets JEDEC MS-013 and includes matte tin plating on leads for reliable solderability and whisker resistance.
74LVCH244AD,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVCH
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74LVCH244AD,118 FAQ
1.How can I place an order for 74LVCH244AD,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH244AD,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 74LVCH244AD,118 reliable?
The price and inventory of 74LVCH244AD,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH244AD,118 is usually 5 days.
3.What payment methods are accepted for 74LVCH244AD,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH244AD,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH244AD,118?
74LVCH244AD,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH244AD,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 74LVCH244AD,118?
For technical support, including 74LVCH244AD,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH244AD,118 requirements.
6.How does Aetrix verify that 74LVCH244AD,118 is sourced from the original manufacturer or authorized distributors?
All 74LVCH244AD,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 74LVCH244AD,118 meets industry standards.
7.What is the process for return or replacement of 74LVCH244AD,118?
All 74LVCH244AD,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH244AD,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 74LVCH244AD,118 part is unused and in its original packaging.
Return procedure for 74LVCH244AD,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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