74ACT163TTR

Counter Dividers Overview

The STMicroelectronics 74ACT163TTR is a synchronous presettable 4-bit binary counter fabricated with sub-micron silicon gate C2MOS technology. It operates within a supply voltage range of 4.5V to 5.5V, featuring a typical maximum clock frequency of 250MHz at 5V and low power dissipation with a quiescent current of 8μA maximum. The device provides symmetrical output impedance with drive capabilities of 24mA minimum for both sourcing and sinking. It includes parallel load, synchronous reset, and count-enable controls, ensuring balanced propagation delays between high-to-low and low-to-high transitions.

Counter Dividers Feature Summary

• Synchronous operation with four fundamental modes: synchronous reset, parallel load, count-up, and hold.
• Direct interface capability with High Speed CMOS systems alongside TTL, NMOS, and CMOS output voltage levels.
• Integrated protection circuits against static discharge providing 2KV ESD immunity on all inputs and outputs.

Counter Dividers Applications

• High-speed digital counting applications requiring precise synchronization.
• Cascading configurations utilizing the dedicated terminal count output.
• Systems interfacing between TTL/NMOS outputs and High Speed CMOS inputs.

Counter Dividers Procurement Notes

Verify component authenticity through official STMicroelectronics channels or authorized distributors. Confirm package integrity matches TSSOP-16 specifications. Review datasheet revisions for updates regarding absolute maximum ratings and operating conditions. Ensure compliance with RoHS directives if required by specific project standards. Validate storage and handling procedures to maintain ESD protection efficacy.

Counter Dividers Selection Notes

Select this component when designing circuits requiring a 4-bit synchronous counter with high-speed performance up to 250MHz. Consider the TSSOP-16 package for surface-mount assembly constraints. Evaluate the 4.5V to 5.5V operating voltage range against system power supplies. Assess the need for parallel loading and synchronous reset features over asynchronous alternatives.

Counter Dividers Part Context

This part belongs to the 74ACT logic family, representing advanced high-speed CMOS technology. It maintains pin and function compatibility with the standard 74 series 163 counters while offering improved latch-up immunity and faster switching speeds. The TTR suffix specifically denotes the Tape and Reel packaging format for automated surface-mount placement.

Counter Dividers Replacement Considerations

Check for direct pin-compatible equivalents from other manufacturers within the 74ACT163 specification. Verify that any substitute maintains the same 4.5V to 5.5V operating voltage and 250MHz frequency characteristics. Ensure the alternative component supports the required TSSOP-16 package dimensions.