TC74HC251AP(F)

Signal Switches, Multiplexers, Decoders Overview

The TC74HC251AP(F) is an 8-channel multiplexer with 3-state outputs, fabricated using Toshiba's silicon gate C2MOS technology. It operates within a supply voltage range of 2 to 6 V and supports an operating temperature from -40 to 85 °C. The device features symmetrical output impedance with a minimum drive capability of 4 mA for both high and low states. Propagation delay times are typically 14 ns (D-Y) and 15 ns (D-W) at 5 V. Quiescent supply current is maximized at 4 μA at 25 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides eight selectable data inputs decoded by three address lines, routing the selected signal to non-inverting and inverting outputs.
• Outputs enter a high-impedance state when the strobe input is held high, effectively isolating the bus.
• All inputs include protection circuits designed to withstand static discharge or transient excess voltage.

Signal Switches, Multiplexers, Decoders Applications

• Data bus switching applications
• Signal routing in digital systems
• Multiplexing multiple data sources

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the AP designation corresponds to the DIP-16 package while AF denotes SOP-16. Confirm RoHS compliance status directly with the manufacturer or authorized distributor, as environmental declarations can vary by production batch. Ensure the design accounts for the absolute maximum ratings to prevent performance deterioration.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for designs requiring high-speed CMOS logic with low power dissipation. It serves as a pin-compatible alternative to 74LS251 devices. Verify that the load capacitance requirements align with the specified AC characteristics. Ensure unused inputs are tied to either VCC or GND to maintain normal operation.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the TC74HC251A series of 8-channel multiplexers. It is functionally compatible with the standard 74LS251 logic family but utilizes advanced C2MOS technology for improved speed and lower power consumption. The device is manufactured by Toshiba Semiconductor and Storage.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The TC74HC251AF is the surface-mount equivalent offering identical electrical functionality in an SOP-16 package. Standard 74HC251 variants from other manufacturers may be considered if pin compatibility and voltage ranges match.