74HCT193DB,112

Counter Dividers Overview

The Nexperia 74HCT193DB,112 is a synchronous 4-bit binary up/down counter in the 74HCT logic family. It operates with a supply voltage range of 4.5 V to 5.5 V and features separate CPU and CPD clock inputs for independent up or down counting operations. The device includes asynchronous parallel load (PL) and master reset (MR) capabilities, along with terminal count outputs (TCU and TCD) for cascading. It is housed in a 16-lead SO plastic small outline package (SOT109-1).

Counter Dividers Feature Summary

• Supports synchronous reversible 4-bit binary counting using dedicated up and down clock inputs.
• Features asynchronous parallel load and master reset functions for immediate state control.
• Includes terminal count outputs that duplicate clock waveforms to facilitate multistage expansion without external logic.

Counter Dividers Applications

• Cascaded up/down counter configurations
• Digital timing circuits requiring presettable counters
• Frequency division applications

Counter Dividers Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status prior to integration. Check current lifecycle status as discontinuation notices may apply. Ensure ESD handling protocols are followed during assembly. Validate pin compatibility with existing PCB footprints.

Counter Dividers Selection Notes

Select this component when TTL-compatible input levels are required within a CMOS system. Verify that the operating temperature range meets environmental specifications. Consider the propagation delay characteristics relative to the maximum clock frequency requirements of the design.

Counter Dividers Part Context

This part belongs to the 74HCT series, which bridges TTL logic levels with CMOS performance. The 74HCT193 variant specifically provides synchronous up/down counting functionality. It shares functional similarities with the 74HC193 but utilizes different input threshold voltages suitable for interfacing with standard TTL devices.

Counter Dividers Replacement Considerations

Public confirmed substitute: SN74LS193DR from Texas Instruments.