Texas Instruments

SN74LS373DW

SN74LS373DW Description

The SN74LS373DW from Texas Instruments is a high-performance 8-bit transparent D-type latch with 3-state outputs, designed for bus interface applications. Packaged in a 20-pin SOIC (DW) surface-mount format, it operates within a 4.75V to 5.25V supply range and is part of the 74LS series, known for its low-power Schottky (LS) technology. This latch features independent circuits (1x 8:8 configuration), providing non-inverting outputs with high drive capability (2.6mA high, 24mA low). Its propagation delay of 12ns ensures reliable performance in high-speed digital systems. The device is RoHS3 compliant, REACH unaffected, and rated for operating temperatures of 0°C to 70°C, making it suitable for industrial and commercial applications.

SN74LS373DW Features

• 8-bit transparent latch with 3-state outputs for bus-oriented designs.
• Wide voltage range (4.75V–5.25V) compatible with TTL logic levels.
• High output drive (24mA sink, 2.6mA source) for interfacing with multiple loads.
• Low propagation delay (12ns) ensures fast data transfer.
• 3-state outputs allow bus sharing without contention.
• Surface-mount 20-SOIC package saves board space in compact designs.
• RoHS3 compliant and REACH unaffected, meeting environmental standards.
• Moisture Sensitivity Level (MSL) 1—suitable for unlimited floor life.

SN74LS373DW Applications

• Microprocessor/microcontroller bus interfacing for data buffering.
• Memory address latching in digital systems.
• Data storage and transfer in industrial control systems.
• Port expansion in embedded designs requiring multiple I/O lines.
• High-speed digital signal routing in communication equipment.
• Automotive and industrial electronics where reliable latching is critical.

Conclusion of SN74LS373DW

The SN74LS373DW is a versatile, high-speed latch ideal for bus-driven systems requiring efficient data buffering and temporary storage. Its 3-state outputs, robust drive capability, and low propagation delay make it superior to standard latches in noise-sensitive, high-performance applications. With Texas Instruments' proven reliability and compliance with modern environmental standards, this latch is a go-to solution for engineers designing digital logic, embedded systems, and industrial automation. Its compact SOIC package further enhances its suitability for space-constrained PCB layouts.