74ABT2244CMTC

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ABT2244CMTC is an octal buffer and line driver featuring integrated 25 Ω series resistors in the outputs. It operates within a supply voltage range of +4.5V to +5.5V and supports ambient temperatures from -40°C to +85°C. The device provides non-inverting buffering with three-state outputs controlled by two active-low enable inputs (OE1, OE2). Propagation delay ranges from 1.0 ns to 3.9 ns at VCC = 5V with a 50pF load. Output drive capabilities include a minimum high-level output voltage of 2.0V at -32mA and a maximum low-level output voltage of 0.8V at 15mA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrated 25 Ω series resistors reduce signal ringing and eliminate the need for external components.
• High-impedance, glitch-free bus loading during power-up and power-down cycles ensures safe hot-insertion.
• Guaranteed latchup protection exceeding 10V input/output stress limits.

Buffers, Drivers, Receivers, Transceivers Applications

• Driving capacitive inputs of MOS memory drivers
• Address drivers for bus-oriented systems
• Clock drivers requiring controlled edge rates

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant, as the CMTC suffix denotes a 20-Lead Thin Shrink Small Outline Package (TSSOP). Confirm that the design accommodates the internal 25 Ω series resistance, which affects output impedance and drive strength compared to standard buffers. Ensure supply voltage constraints between 4.5V and 5.5V are strictly maintained to meet AC electrical specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when application requirements demand integrated series termination to minimize signal reflections without adding discrete resistors. The ABT logic family offers faster propagation delays than standard ALS or LVC families while maintaining 5V compatibility. Verify that the 20-pin TSSOP footprint fits the PCB layout constraints and that the thermal dissipation characteristics suit the operating environment.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74ABT logic family, characterized by high-speed CMOS technology compatible with TTL inputs. The 74ABT2244 is functionally similar to the 74ABT244 but includes built-in series resistors. Originally manufactured by Fairchild Semiconductor, the product line is now managed under onsemi branding following corporate acquisitions.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: 74ABT244CMTC (standard octal buffer without series resistors), SN74ABT2244AN (Texas Instruments equivalent in DIP package).