SN74LS393NSR

Counter Dividers Overview

The SN74LS393NSR is a dual 4-bit binary counter integrated circuit manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a counting rate of 35 MHz. The device features two independent counters, each with 4 bits, utilizing negative-edge triggered flip-flops. It includes asynchronous reset functionality and is housed in a 14-SOIC package with a width of 5.30 mm. The component is designed for surface mount installation and functions reliably across an operating temperature range of 0°C to 70°C.

Counter Dividers Feature Summary

• Contains two independent 4-bit binary counters within a single package
• Features asynchronous reset capability for immediate state clearing
• Utilizes negative-edge triggered clocking for precise timing control

Counter Dividers Applications

• Digital frequency division circuits
• Binary counting applications in digital systems
• Pulse counting and timing logic designs

Counter Dividers Procurement Notes

Verify the specific suffix 'SR' indicates tape and reel packaging when ordering. Confirm RoHS3 compliance status as required by project specifications. Ensure the 14-SOIC footprint matches the PCB layout design. Check for any recent Product Change Notifications regarding assembly or material updates before finalizing procurement plans.

Counter Dividers Selection Notes

Select this component when dual independent binary counting is required in a compact surface-mount form factor. The LS logic family offers standard speed suitable for general-purpose digital applications. Consider the 35 MHz maximum counting rate against system clock requirements. Verify that the 4.75 V to 5.25 V supply voltage aligns with the target power rail.

Counter Dividers Part Context

This part belongs to the Texas Instruments 74LS series of logic devices. It is functionally related to the SN74LS390, which provides decade counters instead of binary counters. Both share similar electrical characteristics and pinout structures but differ in counting modulus. The SN74LS393NSR specifically addresses applications requiring binary progression rather than decimal counting.

Counter Dividers Replacement Considerations

SN74LS393DR serves as a direct equivalent in SOIC-14 packaging. SN74LS393N is available in PDIP-16 through-hole format. SN74LS393NSRG4 and SN74LS393NSRE4 are lead-free variants with identical electrical specifications.