Overview
SN74LVC244APWR from Texas Instruments is an octal buffer and line driver with 3-state outputs. It belongs to the SN74LVC244A logic family and is supplied in a compact TSSOP-20 surface-mount package for production assembly.
This device is used when a digital design needs buffered signal drive, bus isolation, or controlled high-impedance outputs between logic domains. The LVC family supports low-voltage operation from 1.65 V to 3.6 V, while the inputs can tolerate up to 5.5 V, making the part useful in mixed-voltage logic systems when the datasheet conditions are followed.
Package Sale Basis
| Sales Unit | One full reel |
|---|---|
| Components Per Sales Unit | 2,000 pieces |
| Order Quantity 1 Includes | 1 reel containing 2,000 SN74LVC244APWR components |
| Inventory Packaging Marking | 2000/REEL |
| Component Package | TSSOP-20 surface-mount package |
This listing is arranged for full-reel purchasing. Order quantity 1 means one complete reel containing 2,000 components. The format is intended for SMT placement, feeder setup, production kitting, and controlled material replenishment for assemblies that specify SN74LVC244APWR.
Key Benefits
- Eight non-inverting buffer channels support common address, data, and control-signal drive functions.
- 3-state outputs allow the device to disconnect from a bus when output enable is inactive.
- Low-voltage LVC operation supports 1.8 V, 2.5 V, and 3.3 V logic rails within datasheet limits.
- 5.5 V tolerant inputs can simplify selected mixed-voltage interface designs.
- High output drive capability supports board-level logic distribution when loading and timing are verified.
- Full-reel TSSOP-20 format supports automated production and repeatable SMT handling.
Product Features
- Manufacturer part number: SN74LVC244APWR.
- Manufacturer: Texas Instruments.
- Logic function: octal buffer / line driver.
- Output configuration: non-inverting 3-state outputs.
- Supply-voltage range: 1.65 V to 3.6 V.
- Inputs accept voltages up to 5.5 V under datasheet conditions.
- Output drive listed by distributors as 24 mA high and low.
- Operating temperature range listed for the family as -40 C to +125 C.
- Package: 20-TSSOP surface-mount package.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | SN74LVC244APWR |
| Manufacturer | Texas Instruments |
| Product Family | SN74LVC244A |
| Product Category | Logic, buffers, drivers, receivers, transceivers |
| Logic Type | Buffer / line driver, non-inverting |
| Number of Elements | 2 |
| Bits Per Element | 4 |
| Total Channels | 8 |
| Output Type | 3-state |
| Supply Voltage | 1.65 V to 3.6 V |
| Input Voltage Tolerance | Inputs can tolerate up to 5.5 V |
| Output Current | 24 mA source/sink distributor-listed value |
| Propagation Delay | Typical value depends on VCC and load; verify timing in the datasheet |
| Operating Temperature | -40 C to +125 C |
| Mounting Type | Surface mount |
| Package / Case | 20-TSSOP |
| Supplier Device Package | 20-TSSOP |
| Sales Package | Full reel |
| Components Per Package | 2,000 |
Design and Selection Notes
The SN74LVC244APWR should be selected when the target board needs an eight-channel non-inverting buffer with 3-state output control. Check the output-enable polarity, pinout, supply rail, input signal levels, drive current, bus loading, and timing margin before design release.
Because the device has 3-state outputs, it can share a bus only when output-enable timing prevents contention. Designers should also confirm whether the system needs input overvoltage tolerance, partial-power-down behavior, and IOFF support. These details are controlled by the Texas Instruments datasheet and should be reviewed against the final schematic and operating conditions.
For substitutions, compare the full ordering code, package, pinout, temperature grade, logic family, output drive, propagation delay, and tape-and-reel requirements. Similar 74LVC244 devices from different manufacturers may not be identical in timing, package options, ordering codes, or qualification status.
Applications
- Buffered address, data, and control lines in embedded systems.
- Low-voltage digital logic distribution on 1.8 V, 2.5 V, and 3.3 V rails.
- Bus isolation and output-enable controlled logic paths.
- Microcontroller, FPGA, CPLD, and processor support circuitry.
- Mixed-voltage interface designs where 5.5 V tolerant inputs are useful and datasheet limits are met.
- Industrial control, communications, computing, and general digital electronics assemblies.
- Production builds requiring full-reel TSSOP-20 material for automated SMT placement.
Sourcing and Documentation Notes
Please review the attached Product Specification PDF before purchase or design use. The datasheet is the controlling source for electrical limits, timing parameters, absolute maximum ratings, recommended operating conditions, pin configuration, package dimensions, and ordering details.
This product is listed as a full reel of SN74LVC244APWR components. Buyers should confirm the part number, TSSOP-20 package, reel quantity, date-code requirements, logic-voltage requirements, and approved vendor list status before using this component in a qualified production build.
FAQ
What is SN74LVC244APWR best suited for?
SN74LVC244APWR is best suited for buffering, driving, and isolating eight digital signals on low-voltage logic boards that need non-inverting 3-state outputs.
What supply voltage range does the LVC244A family support?
Texas Instruments lists operation from 1.65 V to 3.6 V. Check propagation delay, output drive, and input thresholds at the exact VCC used in the design.
Can the inputs accept 5 V signals?
TI states that inputs accept voltages to 5.5 V, allowing selected mixed-voltage use cases. The output high level still follows the device VCC, so verify the receiving logic thresholds.
What does the 3-state output feature do?
3-state outputs let the buffer disconnect from a bus when output enable is inactive. Designers must sequence output-enable signals to avoid bus contention.
Can this device be used as a level translator?
It can be used for down-translation from higher input levels to the VCC output level under datasheet conditions. It is not a general bidirectional level shifter.
What does order quantity 1 include?
Order quantity 1 means one full reel containing 2,000 SN74LVC244APWR components.
What should be checked before substituting another 74LVC244?
Check package, pinout, output-enable polarity, voltage range, 5 V input tolerance, IOFF behavior, propagation delay, output drive, and temperature grade.
Why does IOFF matter?
TI lists IOFF support for partial-power-down and live-insertion protection. This matters when one side of the system may be powered while another is off.
Which package is APWR?
The APWR orderable suffix corresponds to the TSSOP-20 package and tape-and-reel supply format for SMT assembly.
Where can I find the datasheet?
Use the attached Product Specification PDF for SN74LVC244A timing, output drive, input conditions, package data, and bus-interface guidance.