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Nexperia USA Inc. 74ALVC244PW,118
- Part No.:
- 74ALVC244PW,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74ALVC244PW,118.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:591
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Product details
Overview
74ALVC244PW,118 from Nexperia is an octal 3-state buffer/line driver with dual independent output enables (1OE and 2OE), supporting 1.65 V to 3.6 V supply operation. It functions as two 4-bit buffers or one 8-bit buffer, features Schmitt-trigger inputs for noise immunity, and includes IOFF circuitry for partial power-down protection in mixed-voltage systems. Used in bus interface isolation and level translation between 1.8 V/2.5 V/3.3 V logic domains.
For engineers reviewing the 74ALVC244PW,118 datasheet, 74ALVC244PW,118 pinout, 74ALVC244PW,118 application, or 74ALVC244PW,118 equivalent, key selection criteria include 3-state timing (tpd ≤ 3.2 ns at 3.3 V), IOFF-enabled hot-swap compatibility, Schmitt-trigger input hysteresis, and TSSOP20 package thermal performance across –40 °C to +125 °C.
Technical Context
The device implements two independent 4-bit buffer sections, each controlled by its own active-low output enable (1OE/2OE). Each section drives four high-impedance outputs capable of sinking or sourcing up to ±24 mA at 3.0 V, with VOL ≤ 0.55 V and VOH ≥ 2.2 V under load.
IOFF circuitry actively disables outputs when VCC = 0 V, limiting backflow current to ±80 μA; Schmitt-trigger inputs provide ≥ 0.3 V hysteresis across all supply voltages, enabling robust operation with slow-rising signals from microcontrollers or legacy TTL sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.65 V to 3.6 V - supports direct interfacing with 1.8 V, 2.5 V, and 3.3 V logic families without level shifters |
| Propagation Delay (tpd) | ≤ 3.2 ns at VCC = 3.0–3.6 V - ensures sub-4 ns timing margin for 100 MHz bus clocking |
| IOFF Leakage Current | ±80 μA at VCC = 0 V - prevents damaging back-current during hot-insertion or partial power-down sequences |
| Input Hysteresis | ≥ 0.3 V (Schmitt-trigger) - rejects noise on slow-rising control lines (e.g., reset, enable) in industrial environments |
| Output Drive Strength | ±24 mA per output at VCC = 3.0 V - sufficient to drive 50 pF loads over 10 cm PCB traces with clean edges |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive modules and industrial motor controllers |
| ESD Rating | HBM > 2000 V, CDM > 1000 V - meets IEC 61000-4-2 system-level ESD robustness requirements |
Pinout & Package
TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output enable inputs - independently disable Group 1 (pins 12–18) or Group 2 (pins 3–9) outputs |
| 2, 4, 6, 8 | 1A0–1A3 | Group 1 data inputs - routed to outputs 1Y0–1Y3 (pins 12, 14, 16, 18) when 1OE = LOW |
| 17, 15, 13, 11 | 2A0–2A3 | Group 2 data inputs - routed to outputs 2Y0–2Y3 (pins 3, 5, 7, 9) when 2OE = LOW |
| 12, 14, 16, 18 | 1Y0–1Y3 | Group 1 buffered outputs - high-impedance when 1OE = HIGH; driven LOW/HIGH otherwise |
| 3, 5, 7, 9 | 2Y0–2Y3 | Group 2 buffered outputs - high-impedance when 2OE = HIGH; driven LOW/HIGH otherwise |
| 10 | GND | Ground reference - decoupling capacitor must be placed adjacent to pin 10 and pin 20 |
| 20 | VCC | Supply voltage input - requires local 100 nF ceramic decoupling; connects to 1.65–3.6 V rail |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit buffering | Enables selective bus segmentation - e.g., isolate sensor interface (Group 1) from display controller (Group 2) using separate OE signals |
| IOFF partial power-down | Prevents reverse current flow when VCC is off, allowing safe insertion into live backplanes or hot-swap PCIe carriers |
| Schmitt-trigger inputs | Eliminates need for external RC filters on noisy enable/control lines in factory automation PLCs |
| Overvoltage-tolerant inputs | Accepts up to 3.6 V inputs while powered from 1.8 V - simplifies mixed-supply board design without clamping diodes |
| JESD8-compliant voltage ranges | Validated for 1.65–1.95 V (JESD8-7), 2.3–2.7 V (JESD8-5), and 2.7–3.6 V (JESD8C/JESD36) - ensures interoperability across JEDEC-standard logic families |
Applications
| Industrial Bus Isolation | Low-Voltage Microcontroller Interface |
|---|---|
Use Scenario: Isolating Modbus RTU RS-485 transceiver data lines from a 3.3 V MCU while sharing a common 2.5 V power domain. IC Role / Device Role / Timing Role: Bidirectional buffer with independent OE control - Group 1 routes MCU TX to transceiver DI; Group 2 routes transceiver RO to MCU RX. Use Value: Eliminates level-shifter ICs; Schmitt inputs reject EMI-induced glitches on long cable runs; IOFF prevents latch-up during transceiver power sequencing. | Use Scenario: Driving eight parallel GPIO pins from a 1.8 V ARM Cortex-M0+ MCU to control discrete 3.3 V logic inputs on an FPGA configuration interface. IC Role / Device Role / Timing Role: Unidirectional level-translating buffer - 1A0–1A3 and 2A0–2A3 accept 1.8 V logic; 1Y0–1Y3 and 2Y0–2Y3 drive 3.3 V-compatible FPGA inputs. Use Value: Supports full-speed GPIO toggling (≥ 100 MHz) without timing skew; overvoltage tolerance avoids damage from FPGA I/O leakage during configuration. |
| Hot-Swappable Module Backplane | Legacy TTL-to-CMOS Translation |
Use Scenario: Enabling/disabling communication lanes between a mainboard and hot-pluggable daughter card carrying a 2.5 V ASIC. IC Role / Device Role / Timing Role: 3-state bus buffer with IOFF - outputs enter high-Z before VCC ramp-up; IOFF blocks backfeed during insertion. Use Value: Meets PICMG 2.0 hot-swap safety requirements; eliminates need for complex power-sequencing controllers or discrete MOSFET switches. | Use Scenario: Interfacing a 5 V TTL UART controller with a 3.3 V low-power Bluetooth SoC in a portable medical device. IC Role / Device Role / Timing Role: Input-tolerant buffer - accepts 5 V TTL logic levels (VIH ≥ 2.0 V) while operating from 3.3 V VCC; outputs drive SoC inputs at 3.3 V. Use Value: Replaces discrete resistor-divider networks; Schmitt inputs suppress ringing on unterminated 5 V traces; reduces BOM count and PCB area. |
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; tpd = 3.7 ns (max) at 3.3 V vs. 3.2 ns for 74ALVC244PW | Higher propagation delay limits use in >80 MHz synchronous buses | Select when TI ecosystem alignment or alternate qualification (AEC-Q100 Grade 2) is required |
| 74LVC244ADB,118 | Nexperia's LVC variant lacks Schmitt-trigger inputs and IOFF; operates only down to –40 °C to +85 °C | No IOFF disables safe hot-swap; no hysteresis increases susceptibility to noise on enable lines | Choose only for cost-sensitive consumer applications where partial power-down and noise immunity are non-critical |
Compared with SN74LVC244APWR and 74LVC244ADB,118, the 74ALVC244PW,118 delivers superior timing performance, guaranteed IOFF functionality for hot-swap systems, and Schmitt-trigger noise immunity - making it the optimal choice for industrial and automotive module interfaces requiring robust signal integrity and power sequencing flexibility.
Availability
74ALVC244PW,118 is available at Aetrix Electronics and suitable for industrial bus isolation, low-voltage microcontroller interface, hot-swappable module backplane, and legacy TTL-to-CMOS translation requiring stable component supply across extended temperature ranges.
Supply support for 74ALVC244PW,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 discrete components for automotive, industrial, and mobile markets.
The 74ALVC series targets advanced low-voltage digital interfacing, delivering enhanced speed, noise immunity, and power-down safety for next-generation embedded systems operating across 1.65–3.6 V rails.
FAQ
What is the maximum output current per pin for 74ALVC244PW,118?
Each output can sink or source up to ±24 mA at VCC = 3.0 V, with VOL ≤ 0.55 V and VOH ≥ 2.2 V under those conditions. This rating applies individually per pin and is validated across –40 °C to +125 °C per the datasheet's static characteristics table.
Does 74ALVC244PW,118 support hot-swap operation?
Yes - its IOFF circuitry actively disables outputs and limits backflow current to ±80 μA when VCC = 0 V, enabling safe insertion into live backplanes. This feature is verified per JESD78 Class II.A latch-up testing and absolute maximum ratings.
Can 74ALVC244PW,118 interface directly with 5 V TTL inputs?
No - while inputs tolerate up to 3.6 V, they are not 5 V tolerant. Direct connection to 5 V TTL outputs risks damage. Use a resistive divider or dedicated level translator if interfacing with 5 V sources.
Is the exposed pad on the TSSOP20 package electrically connected?
No - the exposed pad in SOT360-1 (TSSOP20) is a mechanical thermal enhancement only. The datasheet explicitly states it has no electrical or mechanical requirement to be soldered; if connected, it must remain floating or tied to GND.
74ALVC244PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ALVC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm 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:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74ALVC244PW,118 FAQ
1.How can I place an order for 74ALVC244PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVC244PW,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 74ALVC244PW,118 reliable?
The price and inventory of 74ALVC244PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVC244PW,118 is usually 5 days.
3.What payment methods are accepted for 74ALVC244PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVC244PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVC244PW,118?
74ALVC244PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVC244PW,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 74ALVC244PW,118?
For technical support, including 74ALVC244PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVC244PW,118 requirements.
6.How does Aetrix verify that 74ALVC244PW,118 is sourced from the original manufacturer or authorized distributors?
All 74ALVC244PW,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 74ALVC244PW,118 meets industry standards.
7.What is the process for return or replacement of 74ALVC244PW,118?
All 74ALVC244PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVC244PW,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 74ALVC244PW,118 part is unused and in its original packaging.
Return procedure for 74ALVC244PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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