74VHC393MTCX

Counter Dividers Overview

The onsemi 74VHC393MTCX is a dual 4-bit binary counter housed in a 14-lead TSSOP package. It operates within a supply voltage range of 2.0V to 5.5V and supports an operating temperature from -40°C to +85°C. The device features a maximum clock frequency (fMAX) of 170MHz at 5.0V with 15pF load, while quiescent supply current is limited to 4µA at 5.5V. Propagation delays vary by output stage, ranging from approximately 5.4ns to 16.5ns depending on voltage and capacitance.

Counter Dividers Feature Summary

• Contains two independent 4-bit binary counters for simultaneous counting or frequency division.
• Changes state on the negative-going transition of the clock pulse input.
• Provides power-down protection on all inputs to prevent device destruction during mismatched supply voltages.
• Pin and function compatible with equivalent 74HC393 devices.

Counter Dividers Applications

• Frequency division circuits
• Counting applications requiring dual independent channels
• Interfacing between 5V and 3V systems

Counter Dividers Procurement Notes

Verify the specific ordering suffix 'X' indicates tape and reel packaging as documented in the datasheet. Confirm the manufacturer origin, noting the datasheet credits Fairchild Semiconductor while the component is currently distributed by onsemi. Ensure the TSSOP-14 package variant matches the required land pattern for the target PCB design.

Counter Dividers Selection Notes

Select this component when dual independent 4-bit counting is required in a compact surface-mount form factor. The VHC series offers high-speed operation comparable to Bipolar Schottky TTL while maintaining low CMOS power dissipation. Consider the 170MHz maximum clock speed and the specific propagation delay characteristics relative to the load capacitance requirements of the application.

Counter Dividers Part Context

This device belongs to the 74VHC logic family, which utilizes advanced high-speed silicon gate CMOS technology. It is designed to achieve performance similar to equivalent Bipolar Schottky TTL logic but with significantly lower power consumption. The dual-counter architecture allows for efficient space utilization in digital systems requiring multiple counting functions.

Counter Dividers Replacement Considerations

The datasheet explicitly states pin and function compatibility with the 74HC393. Designers may consider other members of the 74VHC or 74HC series that offer dual 4-bit binary counter functionality, provided they meet the specific voltage and speed requirements of the circuit.