My Inquiry
My Account
Texas Instruments SN74LVC244ADWRG4
- Part No.:
- SN74LVC244ADWRG4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVC244ADWRG4.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,990
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVC244ADWRG4 from Texas Instruments is an octal 3-state buffer/driver IC designed for asynchronous bus interfacing in 1.65V–3.6V systems. It features dual 4-bit banks, 5.9ns max propagation delay at 3.3V, 5.5V-tolerant inputs, and Ioff support for live insertion-enabling use in server backplanes and LED display data buses.
For engineers reviewing the SN74LVC244ADWRG4 datasheet, SN74LVC244ADWRG4 pinout, SN74LVC244ADWRG4 application, or SN74LVC244ADWRG4 equivalent, this page delivers verified package mapping (SOIC-20 DW), real-world timing specs, mixed-voltage translation capability, and validated alternatives for industrial bus interface design.
Technical Context
The SN74LVC244ADWRG4 implements two independent 4-bit noninverting buffers, each controlled by a dedicated output-enable (OE) input. Its CMOS architecture supports bidirectional voltage translation: 5.5V inputs are safely clamped and level-shifted to VCC-referenced outputs, enabling interoperability between 3.3V logic and legacy 5V peripherals.
Each bank operates with balanced drive strength (±24mA at 3V), low ground bounce (<0.8V typical VOLP), and robust ESD protection (±2000V HBM). The device enters high-impedance state when OE is high, and supports partial power-down via Ioff leakage control (<10µA at 0V VCC).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 3.6V - Enables direct integration into modern low-voltage digital systems without level-shifting circuitry. |
| Input Voltage Tolerance | Up to 5.5V - Allows safe connection to 5V signal sources while powered from 3.3V or lower rails. |
| tpd Max | 5.9ns at 3.3V - Supports >100MHz bus operation with margin for trace delays and load capacitance. |
| Ioff Leakage | <10µA at 0V VCC - Permits hot-plug insertion and prevents back-driving during partial power-down. |
| Output Drive | ±24mA at 3V - Sustains clean signal integrity across 12cm PCB traces into 50pF loads per output. |
| Operating Temp | –40°C to +125°C - Qualified for automotive under-hood and industrial motor drive control environments. |
| ESD Rating | ±2000V HBM - Meets JEDEC JS-001 for robust handling in automated assembly and field service. |
Pinout & Package
SN74LVC244ADWRG4 uses the DW (SOIC-20) package: 12.80mm × 10.3mm body size, 20-pin gull-wing lead frame, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A4, 2A1–2A4 | Input | Eight buffered data inputs, split into two 4-bit banks (Bank 1: pins 1,2,3,4; Bank 2: pins 13,14,15,16). |
| 1Y1–1Y4, 2Y1–2Y4 | Output | Eight 3-state outputs, each corresponding to its A-input; high-impedance when respective OE is high. |
| 1OE, 2OE | Control Input | Active-low enables for Bank 1 (pin 19) and Bank 2 (pin 1); both must be low for output drivers to activate. |
| VCC | Power | Single supply pin (pin 20); powers all logic and output stages; requires local 0.1µF bypass capacitor. |
| GND | Reference | Ground return (pin 10); must connect to system ground plane with low-inductance path for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5V-tolerant inputs with 3.3V VCC enable direct interfacing between legacy 5V peripherals and modern low-voltage controllers. |
| Ioff partial-power-down | Prevents current backflow and latch-up during hot-swap events, supporting live insertion in modular server and telecom chassis. |
| Balanced CMOS 3-state outputs | Symmetric ±24mA drive ensures matched rise/fall times and reduces ground bounce-induced noise on shared VCC/GND rails. |
| Low propagation delay | 5.9ns tpd at 3.3V allows reliable operation in high-speed address/data multiplexing applications up to 100MHz. |
| Ultra-low static current | 1µA typical ICC at 3.6V minimizes quiescent power in always-on I/O expander and indicator driver functions. |
Applications
| Server Backplane Interface | LED Display Data Distribution |
|---|---|
|
Use Scenario: Driving parallel address/data lines between CPU module and PCIe expansion slots in rack-mounted servers. IC Role / Device Role / Timing Role: Octal buffer isolates and strengthens signals across long backplane traces, preventing timing skew and crosstalk. Use Value: 5.9ns tpd and ±24mA drive ensure setup/hold margins are maintained at 100MHz clock rates with 50pF trace loading. |
Use Scenario: Distributing column scan data to 16×32 RGB LED matrix panels in digital signage systems. IC Role / Device Role / Timing Role: Level-translating buffer converts 3.3V FPGA outputs to robust 5V-tolerant signals driving high-capacitance LED column lines. Use Value: 5.5V input tolerance eliminates external level shifters; Ioff prevents ghosting during panel power sequencing. |
| Industrial Motor Driver Control | Network Switch I/O Expansion |
|
Use Scenario: Isolating microcontroller GPIOs from noisy gate-driver enable signals in BLDC motor inverters. IC Role / Device Role / Timing Role: 3-state buffer decouples MCU logic from high-dV/dt switching nodes, reducing EMI coupling into sensitive analog sections. Use Value: High-impedance disable state blocks noise injection during PWM dead-time; –40°C to +125°C rating matches motor controller thermal envelope. |
Use Scenario: Adding GPIO-controlled status indicators and configuration jumpers to 10GbE switch line cards. IC Role / Device Role / Timing Role: Dual-bank buffer provides independent enable control for LED drivers and DIP-switch interfaces without shared timing constraints. Use Value: Separate 1OE/2OE pins allow selective activation of indicator vs. configuration logic, minimizing standby current in unpopulated ports. |
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 |
|---|---|---|---|
| SN74LVCH244A | Includes bus-hold circuitry on all inputs; otherwise identical VCC, timing, and drive specs. | Eliminates need for external pull-up/down resistors on unused or floating inputs in I/O expander designs. | Select SN74LVCH244A when input termination is impractical due to board space or cost constraints. |
| 74LVC244APW | TSSOP-20 package (6.5mm × 6.4mm); same electrical specs but smaller footprint and higher thermal resistance (RθJA = 120.3°C/W). | Better suited for space-constrained telecom modules where SOIC-20 height or thermal mass is prohibitive. | Choose 74LVC244APW only if PCB area is critical and thermal derating for 125°C ambient is acceptable. |
Compared with SN74LVC244ADWRG4, SN74LVCH244A adds bus-hold for input stability without altering timing or drive, while 74LVC244APW trades SOIC mechanical robustness for compactness-neither is pin-compatible without layout revision.
Availability
SN74LVC244ADWRG4 is available at Aetrix Electronics and suitable for server backplanes, LED display controllers, industrial motor drives, network switches, and telecom infrastructure requiring stable component supply across extended temperature ranges.
Supply support for SN74LVC244ADWRG4 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74LVC244ADWRG4 belongs to TI's LVC logic family-designed specifically for low-voltage, high-speed, mixed-signal interfacing in space- and power-constrained systems.
FAQ
What is the maximum operating temperature for SN74LVC244ADWRG4?
The SN74LVC244ADWRG4 is rated for operation from –40°C to +125°C across all packages except BGA, which is limited to –40°C to +85°C. This makes SN74LVC244ADWRG4 suitable for under-hood automotive and industrial motor control applications where ambient temperatures exceed 100°C.
Does SN74LVC244ADWRG4 support 5V logic inputs while powered from 3.3V?
Yes, SN74LVC244ADWRG4 accepts input voltages up to 5.5V regardless of VCC level, enabling direct connection to 5V peripherals without external level shifters. This mixed-mode capability is explicitly confirmed in the datasheet's Recommended Operating Conditions table.
What is the purpose of the Ioff feature in SN74LVC244ADWRG4?
The Ioff feature in SN74LVC244ADWRG4 disables all outputs and limits leakage current to <10µA when VCC = 0V, preventing back-driving and signal contention during hot-swap or partial power-down scenarios-critical for modular server and telecom chassis designs.
Can SN74LVC244ADWRG4 drive long PCB traces reliably?
Yes, SN74LVC244ADWRG4 delivers ±24mA output drive at 3V and exhibits low ground bounce (<0.8V typical VOLP), enabling clean signal transmission across PCB traces up to 12cm long into 50pF loads-validated in TI's layout guidelines and application curves.
Is SN74LVC244ADWRG4 pin-compatible with older 74-series buffers like SN74LS244?
No, SN74LVC244ADWRG4 is not pin-compatible with SN74LS244. While both are octal 3-state buffers, SN74LVC244ADWRG4 uses SOIC-20 (DW) packaging with different pin assignments-including dual OE inputs and split bank organization-requiring PCB layout changes for replacement.
SN74LVC244ADWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN74LVC244ADWRG4 FAQ
1.How can I place an order for SN74LVC244ADWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC244ADWRG4 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 SN74LVC244ADWRG4 reliable?
The price and inventory of SN74LVC244ADWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC244ADWRG4 is usually 5 days.
3.What payment methods are accepted for SN74LVC244ADWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC244ADWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC244ADWRG4?
SN74LVC244ADWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC244ADWRG4 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 SN74LVC244ADWRG4?
For technical support, including SN74LVC244ADWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC244ADWRG4 requirements.
6.How does Aetrix verify that SN74LVC244ADWRG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC244ADWRG4 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 SN74LVC244ADWRG4 meets industry standards.
7.What is the process for return or replacement of SN74LVC244ADWRG4?
All SN74LVC244ADWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC244ADWRG4, 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 SN74LVC244ADWRG4 part is unused and in its original packaging.
Return procedure for SN74LVC244ADWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVC244ADWRG4 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
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…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
