DM74LS26MX

Inverter Gates Overview

The DM74LS26MX is a quad two-input NAND gate integrated circuit belonging to the Fairchild Semiconductor DM74LS series. It utilizes Low-power Schottky (LS) TTL logic technology and features open-collector outputs, which require external pull-up resistors for proper operation. The device is housed in a 14-pin Small Outline Integrated Circuit (SOIC) package with a standard 0.150-inch width. It operates within a supply voltage range of 4.75 V to 5.25 V, typically at 5 V. The maximum propagation delay is specified at 32 ns under nominal supply conditions, while the maximum power supply current (ICC) is 4.4 mA. The component supports a maximum operating temperature of 70 °C.

Inverter Gates Feature Summary

• Contains four independent two-input NAND logic gates configured for high-speed digital switching applications.
• Features open-collector output structure designed to facilitate wired-AND connections and interface with varying load voltages.

Inverter Gates Applications

• General-purpose digital logic circuits requiring NAND functionality
• Bus-oriented systems utilizing open-collector configurations
• Interface circuits between different logic families or voltage levels

Inverter Gates Procurement Notes

Verify the specific manufacturer source, as the DM74LS26MX designation may be distributed by entities other than Fairchild Semiconductor. Confirm that the open-collector output characteristic aligns with your circuit design requirements, as this differs from standard push-pull outputs. Ensure the SOIC-14 package dimensions match your PCB footprint specifications before finalizing procurement.

Inverter Gates Selection Notes

Select this component when a quad NAND gate with open-collector outputs is required within the LS-TTL family. Consider the 32 ns propagation delay and 4.4 mA current consumption against system timing and power budgets. Verify compatibility with the 4.75 V to 5.25 V operating range and ensure appropriate pull-up components are included in the design for the open-collector outputs.

Inverter Gates Part Context

This part belongs to the DM74LS series, representing Low-power Schottky TTL logic manufactured by Fairchild Semiconductor. The 'M' suffix indicates the SOIC surface-mount package variant. This series provides a balance of speed and power consumption compared to standard 74LS devices, widely used in legacy and industrial digital control systems.

Inverter Gates Replacement Considerations

Equivalent parts include the SN74LS26N (Texas Instruments) for through-hole DIP packages or the SN74LS26N/SOIC variants for surface mount. Other manufacturers such as ON Semiconductor or Rochester Electronics may offer compatible LS-TTL quad NAND gates with open-collector outputs in similar pinouts.