My Inquiry
My Account
NXP Semiconductors 74LVC244APW,112
- Part No.:
- 74LVC244APW,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVC244APW,112.pdf
- Description:
- IC BUFF NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:163,862
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74LVC244APW,112 from Nexperia is an octal 3-state buffer/line driver in TSSOP20 package, designed for bidirectional data buffering and level translation between 1.2 V–3.6 V logic domains. It features dual independent output enables (1OE, 2OE), Schmitt-trigger inputs for noise immunity, IOFF partial power-down protection, and 5.5 V overvoltage-tolerant inputs-enabling reliable use in mixed-voltage industrial control backplanes and FPGA I/O expansion interfaces.
For engineers reviewing the 74LVC244APW,112 datasheet, 74LVC244APW,112 pinout, 74LVC244APW,112 application, or 74LVC244APW,112 equivalent, this device supports critical timing-sensitive bus driving tasks where low propagation delay (<7.5 ns at 3.3 V), high-impedance state integrity, and robust ESD resilience (HBM >2000 V) are required in compact PCB layouts.
Technical Context
The 74LVC244APW implements two independent 4-bit buffered paths, each controlled by a dedicated active-low output enable (1OE for Y0–Y3, 2OE for Y0–Y3). Its CMOS architecture ensures rail-to-rail output swing and sub-μA ICC supply current at standby, while IOFF circuitry actively disables outputs during power-down to block damaging backflow currents.
Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at VCC = 3.3 V), enabling clean signal regeneration from slow-rising microcontroller GPIOs or noisy sensor lines. Input voltage tolerance up to 5.5 V allows direct interfacing with legacy 5 V peripherals without external level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.2 V to 3.6 V - supports ultra-low-power MCU I/O domains and standard 3.3 V systems without level-shifting overhead |
| Propagation Delay | 1.5 ns to 7.5 ns (VCC = 3.0–3.6 V) - enables sub-10 ns bus cycle timing in high-speed peripheral interfaces |
| IOFF Leakage | ±10 μA max at VCC = 0 V - prevents cross-current damage when one side of a hot-swappable bus is powered down |
| Input Voltage Range | 0 V to 5.5 V - permits direct connection to 5 V TTL outputs while operating from 1.8 V or 3.3 V rails |
| ESD Rating | HBM >2000 V, CDM >1000 V - meets industrial-grade robustness requirements for board-level handling and field deployment |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive modules and industrial motor drive controllers |
| Output Drive | ±24 mA (VCC = 3.0 V) - drives 50 pF loads across 15 cm traces with <10% overshoot in typical PCB stackups |
Pinout & Package
TSSOP20 package (SOT360-1): 4.4 mm body width, 0.65 mm pitch, 20-terminal surface-mount outline with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low enables for Group 1 (Y0–Y3) and Group 2 (Y0–Y3) outputs; both must be LOW for valid output states |
| 2, 4, 6, 8 | 1A0–1A3 | Data inputs for first 4-bit buffer group; Schmitt-triggered for noise margin on slow edges |
| 3, 5, 7, 9 | 2Y0–2Y3 | Outputs for second 4-bit buffer group; 3-state capable with fast disable time (≤9.5 ns) |
| 10 | GND | Reference ground for all I/O and internal logic; requires low-inductance PCB connection to minimize switching noise |
| 11, 13, 15, 17 | 2A0–2A3 | Data inputs for second 4-bit buffer group; identical electrical specs to 1A0–1A3 |
| 12, 14, 16, 18 | 1Y0–1Y3 | Outputs for first 4-bit buffer group; matched propagation delay with 2Y0–2Y3 for synchronous bus operation |
| 20 | VCC | Primary supply rail; decoupling capacitor (100 nF) required within 5 mm for stable high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range | 1.2 V–3.6 V operation enables single-bom support across 1.8 V microcontrollers and 3.3 V FPGAs |
| IOFF partial power-down | Blocks backflow current when VCC = 0 V, allowing safe insertion into live 5 V buses |
| Schmitt-trigger inputs | 0.3 V typical hysteresis at 3.3 V eliminates false triggering from noisy sensor or long-trace signals |
| Overvoltage-tolerant inputs | 5.5 V absolute max input rating permits direct interface with 5 V legacy peripherals |
| Low dynamic power | CPD = 12.5 pF at 3.3 V enables <1 mW per channel at 10 MHz clock rates |
Applications
| Industrial PLC Backplane | FPGA I/O Expansion |
|---|---|
|
Use Scenario: Isolating and driving parallel address/data buses between CPU module and modular I/O cards in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Bidirectional buffer with independent OE control per 4-bit segment, ensuring glitch-free bus arbitration during hot-swap events. Use Value: IOFF protection prevents latch-up when card power sequencing differs from backplane; 125 °C rating sustains operation near motor drives. |
Use Scenario: Extending limited FPGA I/O pins to drive multiple SPI peripherals, ADCs, and DACs on a dense carrier board. IC Role / Device Role / Timing Role: Level-translating buffer translating 1.8 V FPGA outputs to 3.3 V peripheral logic while maintaining <7.5 ns timing margins. Use Value: 5.5 V-tolerant inputs accept 3.3 V SPI MISO returns without clamping diodes; TSSOP20 footprint saves space vs SO20. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
|
Use Scenario: Driving LIN transceiver enable lines and sensor multiplexer select signals in under-hood junction boxes. IC Role / Device Role / Timing Role: Low-power buffer providing noise-immune control signals with Schmitt-trigger inputs rejecting engine compartment EMI. Use Value: −40 °C to +125 °C qualification ensures reliability at battery junction temperatures; 24 mA drive handles capacitive LIN bus loads. |
Use Scenario: Conditioning digital stimulus signals from arbitrary waveform generators before injection into DUTs during ATE testing. IC Role / Device Role / Timing Role: Impedance-matched buffer isolating generator output from variable DUT input capacitance to preserve edge fidelity. Use Value: Sub-10 ns propagation delay preserves <100 MHz square wave integrity; 3-state outputs prevent signal contention during test mode switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVCH244APW | Includes bus-hold circuitry on data inputs (IBHL/IBHH specified); otherwise identical pinout, timing, and voltage specs | Eliminates need for external pull-ups on unused data lines in floating-bus architectures | Select when system lacks pull resistors and requires deterministic input state retention during idle periods |
| SN74LVC244APWR | TSSOP20 package (same footprint), but TI part has slightly higher ICC (max 40 μA vs Nexperia's 10 μA) and no IOFF spec | Lacks IOFF protection-unsuitable for hot-swap or partial-power-down systems | Choose only for cost-sensitive non-hot-swap designs where leakage during VCC=0 is not a concern |
Compared with 74LVCH244APW, the 74LVC244APW omits bus-hold but offers lower static current and identical IOFF safety; versus SN74LVC244APWR, it provides guaranteed power-down isolation critical for modular industrial hardware.
Availability
74LVC244APW,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA I/O expansion, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVC244APW,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 delivering high-performance logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and automotive applications.
The 74LVC244A series belongs to Nexperia's advanced LVC logic family, engineered specifically for low-voltage, high-noise-margin interfacing in space-constrained embedded systems with stringent power and thermal requirements.
FAQ
Does the 74LVC244APW support 5 V tolerant outputs?
No. While its inputs tolerate up to 5.5 V, outputs are strictly CMOS-rail-referenced: VOH ≈ VCC − 0.2 V and VOL ≈ 0.55 V at 24 mA load. Driving 5 V logic directly requires external level-shifting circuitry or a 5 V-tolerant buffer variant like the 74LVT244.
Can 1OE and 2OE be tied together for single-enable operation?
Yes. Connecting pins 1 and 19 to a common control signal simplifies logic design for 8-bit unidirectional buffering. This configuration maintains full 8-bit drive capability and matches the timing behavior of dedicated 8-bit enable variants, with no impact on propagation delay or power consumption.
What is the maximum recommended trace length for 24 mA output drive?
At 3.3 V supply and 50 pF load, signal integrity remains intact up to 15 cm on standard FR-4 with 50 Ω impedance control. Beyond that, reflections and ringing increase due to transmission line effects-add series termination (22–33 Ω) near the driver output for lengths exceeding 20 cm.
Is the thermal pad on the TSSOP20 package electrically connected?
No. The exposed pad (pin 1 index area) in SOT360-1 has no internal electrical connection. It may be left floating or soldered to a thermal plane for improved heat dissipation, but must never be connected to VCC or GND unless explicitly confirmed in a revised datasheet revision.
74LVC244APW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- 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-TSSOP
74LVC244APW,112 FAQ
1.How can I place an order for 74LVC244APW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC244APW,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 74LVC244APW,112 reliable?
The price and inventory of 74LVC244APW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC244APW,112 is usually 5 days.
3.What payment methods are accepted for 74LVC244APW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC244APW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC244APW,112?
74LVC244APW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC244APW,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 74LVC244APW,112?
For technical support, including 74LVC244APW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC244APW,112 requirements.
6.How does Aetrix verify that 74LVC244APW,112 is sourced from the original manufacturer or authorized distributors?
All 74LVC244APW,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 74LVC244APW,112 meets industry standards.
7.What is the process for return or replacement of 74LVC244APW,112?
All 74LVC244APW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC244APW,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 74LVC244APW,112 part is unused and in its original packaging.
Return procedure for 74LVC244APW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC244APW,112 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
