CD54HCT193F3A

Counter Dividers Overview

The CD54HCT193F3A is a high-speed CMOS logic presettable synchronous 4-bit binary up/down counter manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range from -55°C to 125°C. The device features asynchronous parallel loading, master reset functionality, and dedicated clock inputs for counting up or down. It includes terminal count outputs for carry and borrow signals to facilitate n-bit cascading.

Counter Dividers Feature Summary

• Synchronous counting with asynchronous parallel load capability
• Dedicated Clock-Up and Clock-Down inputs for bidirectional operation
• Terminal Count Up (Carry) and Terminal Count Down (Borrow) outputs for cascading

Counter Dividers Applications

• Binary counting applications requiring up/down direction control
• N-bit counter cascading systems
• Frequency division circuits
• Digital timing sequences

Counter Dividers Procurement Notes

Verify the specific ordering suffix 'F3A' corresponds to the 16-lead ceramic dual in-line package (CDIP). Confirm that the component meets military or defense application requirements if indicated by the CD54 prefix designation. Ensure compatibility with 4.5V to 5.5V power supplies and check for electrostatic discharge handling procedures during assembly.

Counter Dividers Selection Notes

Select this component when a synchronous 4-bit binary counter with independent up and down clock inputs is required. The HCT series ensures direct compatibility with LSTTL logic levels at 5V operation. Consider the CD54 prefix for extended temperature ranges and ruggedized packaging compared to standard catalog parts.

Counter Dividers Part Context

This part belongs to the CD54/74HC192, CD54/74HC193, and CD54/74HCT193 family of high-speed CMOS logic devices. The CD54 prefix typically denotes military-grade qualification, while the HCT suffix indicates High-speed CMOS technology compatible with TTL input levels. The F3A suffix specifies the ceramic DIP package variant.

Counter Dividers Replacement Considerations

CD54HC193F3A

Counter Dividers FAQ

What is the difference between the CD54HC192 and CD54HCT193?

The CD54HC192 is a BCD decade counter, whereas the CD54HCT193 is a binary counter. Additionally, the HCT series is optimized for 5V operation with TTL-compatible inputs, while HC types support a wider voltage range.

How does the parallel load function operate?

Parallel loading is accomplished asynchronously by driving the Parallel Load (PL) input low. When PL is low, the data present on the P0-P3 inputs is loaded into the counter outputs regardless of the clock states.