My Inquiry
My Account
Texas Instruments SN74LVTT244DBLE
- Part No.:
- SN74LVTT244DBLE
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SN74LVTT244DBLE.pdf
- Description:
- BUS DRIVER, LVT SERIES, 4-BIT
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVTT244DBLE from Texas Instruments is a 3.3-V Advanced BiCMOS Technology (ABT) octal buffer/driver with 3-state outputs, designed for mixed-mode interfacing between 3.3-V logic and 5-V TTL systems. It features dual 4-bit channels, independent output-enable (OE) controls, ±64 mA output drive at VCC = 3.3 V, 4.1 ns typical propagation delay, and operation down to 2.7 V for battery-powered applications.
For engineers reviewing the SN74LVTT244DBLE datasheet, SN74LVTT244DBLE pinout, SN74LVTT244DBLE application, or SN74LVTT244DBLE equivalent, key selection considerations include 3.3-V supply compatibility, 5-V tolerant inputs/outputs, high-current 3-state drivers, low ground bounce (<0.8 V), and shrink small-outline (DB) package footprint optimization.
Technical Context
The SN74LVTT244DBLE implements two independent 4-bit noninverting buffer/driver sections, each controlled by its own active-low output-enable (OE) input. Its ABT BiCMOS architecture enables TTL-level signal translation while maintaining 3.3-V core logic levels and low static power dissipation.
It supports live insertion via controlled output enable sequencing and meets JEDEC JESD-17 latch-up immunity (>500 mA). Input voltage tolerance extends to 7 V, allowing direct connection to 5-V buses without level shifters, and output ground bounce is specified at <0.8 V under switching conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation and ensures stable 3.3-V logic compliance. |
| IOL / IOH | 64 mA / –32 mA - drives heavy capacitive loads or multiple TTL inputs without external buffers. |
| tPLH / tPHL | 2.5 ns / 2.5 ns typical at VCC = 3.3 V - enables high-speed data routing in backplane or bus interface designs. |
| VIL / VIH | 0.8 V / 2.0 V - compatible with standard TTL input thresholds for seamless 5-V system integration. |
| VOL / VOH | 0.5 V max / 2.0 V min at IOL = 64 mA / IOH = –32 mA - guarantees robust noise margins in noisy industrial environments. |
| ICC (active) | 12 mA max at VCC = 3.6 V - low dynamic power consumption suitable for portable and thermally constrained systems. |
| Input Clamping | ±50 mA - protects against transient overvoltage on control or data lines during hot-swap events. |
Pinout & Package
SN74LVTT244DBLE is packaged in a 20-pin shrink small-outline (DB) package with 0.65 mm lead pitch, occupying less than half the PCB area of standard SOIC while retaining identical I/O count and pinout compatibility with industry-standard layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Active-low output-enable control | Independent gating of each 4-bit channel; tie to VCC via pullup for power-up high-Z safety. |
| 1A1–1A4, 2A1–2A4 | Data inputs | Noninverting inputs for respective output groups; 5-V tolerant up to 7 V. |
| 1Y1–1Y4, 2Y1–2Y4 | 3-state buffered outputs | Drive capability up to 64 mA sink; high-impedance state when OE is high. |
| GND (Pin 10) | Ground reference | Primary return path for all I/O and supply currents; critical for minimizing ground bounce. |
| VCC (Pin 20) | Supply voltage | 3.3-V nominal supply; operates down to 2.7 V with full functionality maintained. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode 5-V/3.3-V interface | 5-V tolerant inputs and outputs allow direct connection to legacy 5-V TTL buses without level-shifting circuitry. |
| Live-insertion support | Controlled 3-state behavior and latch-up immunity (>500 mA) enable safe hot-plug operation in modular backplanes. |
| Low ground bounce | Typical VOLP < 0.8 V at VCC = 3.3 V ensures signal integrity during simultaneous output switching. |
| Wide supply range | 2.7 V to 3.6 V operation accommodates aging batteries and variable power rails in portable equipment. |
| High-output current drive | 64 mA sink per output supports driving multiple TTL loads or terminated transmission lines directly. |
Applications
| Industrial Backplane Interface | Legacy System Bus Extender |
|---|---|
|
Use Scenario: Interfacing a modern 3.3-V FPGA-based controller to an existing 5-V ISA or VME bus. IC Role / Device Role / Timing Role: Level-translating octal buffer providing bidirectional data isolation and drive strength matching. Use Value: Eliminates need for discrete level shifters and reduces board space by consolidating eight channels in one DB-package IC. |
Use Scenario: Adding peripheral expansion slots to a 5-V embedded PC motherboard using newer 3.3-V peripherals. IC Role / Device Role / Timing Role: Unidirectional driver buffering address/data lines from 5-V host to 3.3-V add-on cards. Use Value: Maintains timing integrity with 2.5 ns typical propagation delay while handling 64 mA load per line. |
| Hot-Swappable Module Carrier | Battery-Powered Data Logger |
|
Use Scenario: Powering and signaling to removable sensor modules in a rack-mounted test system. IC Role / Device Role / Timing Role: Output-enable-gated buffer enabling safe insertion/removal without disrupting shared bus signals. Use Value: JEDEC JESD-17 latch-up immunity and controlled enable sequencing prevent system faults during live module swaps. |
Use Scenario: Signal conditioning and bus driving in a field-deployed environmental monitor powered by Li-ion cells. IC Role / Device Role / Timing Role: Low-voltage buffer sustaining full performance as battery discharges from 4.2 V to 2.7 V. Use Value: Guaranteed operation down to 2.7 V VCC eliminates brown-out resets and extends usable battery life. |
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 |
|---|---|---|---|
| SN74LVT244DBR | LVT family: lower drive (32 mA), no 5-V tolerance - requires external clamping for 5-V inputs. | Best suited for pure 3.3-V systems without legacy interface requirements. | Select when cost and power are prioritized over mixed-voltage interoperability. |
| 74ALVC244PW | ALVC family: 3.3-V only, 24 mA drive, 3.5 ns typical delay, smaller TSSOP-20 package. | Used in space-constrained consumer electronics where 5-V tolerance is unnecessary. | Choose for compact layout and lower ICC (3 µA max standby), but verify input voltage limits. |
Compared with SN74LVTT244DBLE, SN74LVT244DBR lacks 5-V input tolerance and delivers half the output current, while 74ALVC244PW offers smaller footprint and lower quiescent current but cannot interface directly with 5-V buses - SN74LVTT244DBLE remains optimal for mixed-voltage industrial backplane bridging.
Availability
SN74LVTT244DBLE is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy bus extenders, hot-swappable module carriers, and battery-powered data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVTT244DBLE 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74LVTT244DBLE belongs to TI's LVTT ABT logic family, engineered specifically for robust 3.3-V-to-5-V system bridging in mission-critical industrial and telecom infrastructure applications.
FAQ
What is the operating temperature range for SN74LVTT244DBLE?
The SN74LVTT244DBLE is characterized for operation from –40°C to +85°C, making it suitable for commercial and industrial environments. This range is distinct from the military-grade SN54LVTT244 variant, which operates from –55°C to +125°C. The SN74LVTT244DBLE's thermal specification aligns with standard industrial embedded applications and ensures reliable performance under typical ambient conditions without derating.
Does SN74LVTT244DBLE support 5-V input signals?
Yes, SN74LVTT244DBLE supports 5-V input signals - its input voltage range extends to 7 V, and it is explicitly rated for mixed-mode operation with 5-V inputs while powered from a 3.3-V supply. This allows direct connection to legacy 5-V TTL buses without external level-shifting components, a key differentiator from standard LVT or ALVC buffers that lack this tolerance.
What is the maximum output current capability of SN74LVTT244DBLE?
SN74LVTT244DBLE provides up to 64 mA of sink current (IOL) and –32 mA of source current (IOH) per output at VCC = 3.3 V. These values are guaranteed over the full operating temperature range and enable direct driving of multiple TTL loads, terminated transmission lines, or optocoupler inputs without additional buffering stages.
Can SN74LVTT244DBLE be used in hot-swap applications?
Yes, SN74LVTT244DBLE supports live insertion: its 3-state outputs, controlled enable inputs, and JEDEC JESD-17–compliant latch-up immunity (>500 mA) make it suitable for hot-swap backplane and modular carrier designs. Proper sequencing - holding OE high until VCC stabilizes - ensures outputs remain in high-impedance state during power ramp-up.
What package type does SN74LVTT244DBLE use?
SN74LVTT244DBLE uses the shrink small-outline (DB) package - a 20-pin surface-mount package with 0.65 mm lead pitch. It delivers identical pinout and functionality to standard SOIC but occupies less than half the PCB area, enabling higher-density layouts in space-constrained industrial and telecom modules.
SN74LVTT244DBLE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SN74LVTT244DBLE FAQ
1.How can I place an order for SN74LVTT244DBLE through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTT244DBLE 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 SN74LVTT244DBLE reliable?
The price and inventory of SN74LVTT244DBLE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTT244DBLE is usually 5 days.
3.What payment methods are accepted for SN74LVTT244DBLE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVTT244DBLE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVTT244DBLE?
SN74LVTT244DBLE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTT244DBLE 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 SN74LVTT244DBLE?
For technical support, including SN74LVTT244DBLE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTT244DBLE requirements.
6.How does Aetrix verify that SN74LVTT244DBLE is sourced from the original manufacturer or authorized distributors?
All SN74LVTT244DBLE 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 SN74LVTT244DBLE meets industry standards.
7.What is the process for return or replacement of SN74LVTT244DBLE?
All SN74LVTT244DBLE units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTT244DBLE, 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 SN74LVTT244DBLE part is unused and in its original packaging.
Return procedure for SN74LVTT244DBLE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVTT244DBLE 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…
