74ACT251MTCX

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74ACT251MTCX is an 8-input digital multiplexer with 3-STATE outputs, housed in a 16-Lead Thin Shrink Small Outline Package (TSSOP). It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature from -40°C to +85°C. The device features TTL-compatible inputs and provides both true and complementary outputs capable of sourcing or sinking 24 mA. Propagation delays are typically 7.0 ns for select-to-output transitions and 5.5 ns for input-to-output transitions at 5.0V.

Signal Switches, Multiplexers, Decoders Feature Summary

• Multifunctional capability allowing implementation of any logic function of four variables
• On-chip select logic decoding for efficient data selection
• Inverting and noninverting 3-STATE outputs for bus expansion

Signal Switches, Multiplexers, Decoders Applications

• Universal function generator applications
• Data routing and signal selection systems
• Bus expansion configurations

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering code suffix 'X' confirms tape and reel packaging when required by automated assembly processes. Confirm that the TSSOP package variant matches the footprint requirements of the target PCB design. Ensure compliance with RoHS directives if applicable to the manufacturing environment. Cross-reference the manufacturer part number against current datasheets to verify active status and revision history before finalizing procurement specifications.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a high-speed 8-channel multiplexer with 3-STATE output control is required. The ACT series ensures compatibility with TTL logic levels while offering reduced quiescent current compared to older standards. Verify that the 16-pin TSSOP package fits the available board space and that the 24 mA drive current meets the load requirements of the connected circuitry.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the 74AC/ACT family of high-speed CMOS logic devices. It functions as a single-pole, 8-position switch controlled by three select inputs. The 74ACT251MTCX specifically utilizes the TSSOP-16 package, providing a compact solution for surface-mount designs requiring multiple data paths and tri-state buffering capabilities.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes include the 74AC251MTCX for AC-series performance or other manufacturers' equivalents like the MC74ACT251MTC. Verify pinout compatibility and electrical characteristics such as propagation delay and output drive strength before substitution.