SN74ALS568AN

Counter Dividers Overview

The SN74ALS568AN is a synchronous 4-bit up/down decade and binary counter manufactured by Texas Instruments. It features three-state outputs for bus-driven operation. The device operates within a supply voltage range of 4.5 V to 5.5 V. It supports both decade (BCD) and binary counting modes. The component is housed in a PDIP-16 package and is rated for an operating temperature range from 0°C to +70°C.

Counter Dividers Feature Summary

• Synchronous four-bit counting capability with selectable up or down direction
• Three-state outputs enabling direct connection to system data buses
• Configurable as either a decade counter or a binary counter

Counter Dividers Applications

• Digital frequency division circuits
• Binary-coded decimal counting systems
• Timing sequence control logic

Counter Dividers Procurement Notes

Verify the specific suffix 'AN' corresponds to the through-hole PDIP-16 package variant. Confirm RoHS compliance status via the official datasheet, as historical ALS series parts may have varying environmental declarations. Ensure the supplier provides the manufacturer's original datasheet for electrical parameter validation before finalizing procurement.

Counter Dividers Selection Notes

Select this component when synchronous counting with high-impedance bus interfacing is required. The ALS series offers faster switching speeds compared to standard LS logic. Verify that the application requires a single 4-bit stage rather than cascaded multi-byte counters. Check pin compatibility if replacing older TTL variants in existing designs.

Counter Dividers Part Context

This part belongs to the Texas Instruments SN74ALS logic family, which utilizes Advanced Low-power Schottky technology. The SN74ALS568A series specifically addresses applications needing precise synchronous counting with bus isolation capabilities. It serves as a fundamental building block for digital state machines and timing controllers.

Counter Dividers FAQ

Can the SN74ALS568AN function as both a decade and binary counter?

Yes, the device mode is selectable, allowing it to operate as either a modulo-10 decade counter or a modulo-16 binary counter.

What is the purpose of the three-state outputs?

The three-state outputs allow the counter to be directly connected to a microprocessor data bus without external buffering, isolating the counter when not selected.