74AC11244NT Octal Buffer Line Driver 3-State PDIP-24 Texas Instruments NOS

74AC11244NT Octal Buffer/Line Driver - EPIC CMOS, 3-State Outputs, PDIP-24, Unused

Condition

Unused NOS. Sourced from an electronics distributor consolidating inventory. Unit is marked 74AC11244NT and S8745AN, all 24 pins straight with no oxidation or damage visible. No function testing performed - visual inspection confirms excellent physical condition.

Ships same business day from Idaho. Packed carefully.

No hassle resolution if there is an issue. Serving customers since 1999.

Product Overview

Texas Instruments 74AC11244NT - an octal buffer and line driver with 3-state outputs, housed in a 24-pin plastic DIP (PDIP-24) package. Built on TI's EPIC (Enhanced-Performance Implanted CMOS) 1-µm process. Operates as two independent 4-bit buffers or one 8-bit buffer. Non-inverting, 3-state outputs allow multiple devices to share a common bus without signal conflict. Designed for memory address drivers, clock drivers, and bus-oriented receivers and transmitters. This part has been withdrawn by Texas Instruments - last ship date was October 2016, making NOS stock the primary supply channel.

Key Features

• Logic family: AC (Advanced CMOS)
• Package: PDIP-24 (NT suffix)
• 8 inputs, 8 outputs - non-inverting, 3-state
• EPIC 1-µm process for high-speed switching
• Output drive: -24 mA (high) / 24 mA (low)
• Operating temperature: -40°C to 85°C
• Center-pin VCC and GND configuration minimizes switching noise
• Flow-through architecture for optimized PCB layout
• 500-mA typical latch-up immunity at 125°C
• Input clamp diodes; balanced outputs
• Supply voltage: 4.5V to 5.5V typical operating range - verify against datasheet before use

Applications

• Memory address register buffering in embedded and legacy digital systems
• Clock signal distribution across multi-load boards
• Bus-oriented transmitters and receivers in backplane designs
• Retro computing repair and restoration requiring through-hole PDIP logic ICs
• Prototyping and breadboard work where PDIP form factor is preferred over surface-mount alternatives

Frequently Asked Questions

Is this the PDIP-24 package or a surface-mount variant?

This is the PDIP-24 (through-hole) package, confirmed by the NT suffix and the unit markings visible on the chip. Surface-mount variants carry different suffixes (DW, DB, PW).

What supply voltage does this part require?

Typical operating voltage is 5V, consistent with AC-family CMOS logic. The 4.5V to 5.5V operating range is referenced in research but not independently confirmed - verify against the TI datasheet before use.

Does this buffer invert the signal?

No. The 74AC11244NT is non-inverting. If your design requires signal inversion, this is not the correct part.

What must be done with unused inputs?

All unused inputs must be tied to VCC or GND. Floating inputs can cause improper operation or device damage.

Is a datasheet or documentation included?

Not included. TI's datasheet for the 74AC11244 is the reference document - search by model number.

A through-hole CMOS octal buffer from before surface-mount took over everything - still the right answer when your board has pads for a DIP and the job is keeping a bus honest.