The SN54LS161AJ is a high-performance integrated circuit manufactured by Texas Instruments, a renowned global semiconductor company that designs and manufactures analog ICs and embedded processors.

• Type: 4-bit synchronous, presettable binary counter.
• Counting: Counts from 0000 to 1111 in binary (0 to 15 in decimal) and can be reset to zero by a low level on the parallel load input.
• Triggering: Device is designed to operate with negative edge triggering.
• Direct Clear Input: Equipped with a direct clear input that can override counting and parallel loading and can set all outputs to zero swiftly.
• Package: Enclosed in a ceramic flat package (J).
• Operating Temperature: Operating temperature ranges between -55 to 125 degrees Celsius.