SN74ACT244 Octal 3-State Buffer Driver

Specifications

Product Overview

The SN74ACT244 is an octal 3-state buffer driver from Texas Instruments for Signal_Chain designs that require non-inverting buffering with output enable control. It is organized as two 4-bit buffers, each with a separate OE input. When OE is low, the A input is passed to the Y output; when OE is high, the outputs enter the high-impedance state.

Recommended operation is from 4.5 V to 5.5 V, with inputs accepting voltages to 5.5 V. The recommended input and output voltage ranges are 0 V to VCC, with logic thresholds of 2 V minimum for high-level input and 0.8 V maximum for low-level input. The SN74ACT244 supports high-level output current of -24 mA and low-level output current of 24 mA.

Package options include DGS VSSOP-20, DB SSOP-20, DW SOIC-20, N PDIP-20, NS SO-20, PW TSSOP-20, and RKS VQFN-20. Timing specifications include 1.5 ns to 10 ns propagation delay from A to Y at VCC = 5 V ±0.5 V, with output enable and disable timing specified from OE to Y.

Key Features

• Octal buffer driver with eight non-inverting channels
• Two 4-bit buffer sections with separate OE inputs
• 3-state outputs support high-impedance output control
• Recommended 4.5 V to 5.5 V supply range
• Inputs accept voltages up to 5.5 V
• 2 V minimum high-level input threshold
• 0.8 V maximum low-level input threshold
• ±24 mA recommended output drive ratings
• A-to-Y propagation delay from 1.5 ns to 10 ns
• -40 to 85 °C free-air operating temperature

Typical Applications

• Non-inverting digital signal buffering
• 3-state bus output control
• 5 V logic signal distribution
• Output enable controlled interfaces
• Two 4-bit buffer sections
• High-impedance shared signal lines

Procurement Notes

When requesting a quote for SN74ACT244, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.

If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.

For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.