TC74LCX07FK(EL,K)

Overview

The TC74LCX07FK(EL,K) is a low-voltage hex buffer with open-drain outputs manufactured by Toshiba Semiconductor and Storage. It operates within a power supply voltage range of 1.65 V to 5.5 V, supporting both 3.3-V and 5-V system environments. The device features high-speed operation with a maximum propagation delay (tpz) of 3.7 ns at VCC = 3.0 to 3.6 V. It provides an output current (IOL) of 24 mA minimum at VCC = 3.0 V and includes power-down protection on all inputs and outputs. The component is housed in a VSSOP-14 package.

Feature Summary

• Open-drain output configuration suitable for level shifting
• Power-down protection provided on all inputs and outputs
• Pin and function compatible with standard 74 series logic types

Applications

• Low-voltage bus driving applications
• Level translation between 3.3-V and 5-V systems
• General-purpose buffering in CMOS digital circuits

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the FK designation corresponds to the VSSOP-14 form factor. Confirm RoHS compliance status directly with the manufacturer or authorized distributor, as environmental certifications may vary by production batch. Ensure that the absolute maximum ratings for DC output current are strictly observed during circuit design to prevent device deterioration.

Selection Notes

Select this component when open-drain outputs are required for wired-AND configurations or direct interfacing with higher voltage loads. The wide operating voltage range allows flexibility in mixed-voltage designs. Consider the 3.7 ns propagation delay for timing-critical paths. Verify that the 24 mA drive capability meets the load requirements at the target supply voltage.

Part Context

This part belongs to the TC74LCX07 family of low-voltage hex buffers. It is designed for use in 3.3-V systems but supports 5-V tolerant inputs and outputs. The device maintains CMOS low power dissipation while achieving high-speed operation comparable to equivalent LSTTL devices. It is fabricated using silicon gate CMOS technology.

Replacement Considerations

The datasheet notes pin and function compatibility with other 74 series types such as 74AC/VHC/HC/F/ALS/LS 07 variants. Direct substitutes should be verified against electrical characteristics, specifically output drive strength and propagation delay, to ensure functional equivalence in the target application.