DM74ALS162BM

Counter Dividers Overview

The DM74ALS162BM is a synchronous four-bit decade counter manufactured by onsemi (Fairchild) in a 16-lead SOIC package. It features internal carry look-ahead for high-speed cascading and synchronous preset capability. The device operates within a supply voltage range of 4.5V to 5.5V, with a maximum clock frequency of 40 MHz. Propagation delays from clock to output range from 4 ns to 20 ns depending on the transition direction.

Counter Dividers Feature Summary

• Synchronous four-bit decade counting with internal carry look-ahead
• Synchronous clear and load functions independent of enable inputs
• Functionally compatible with Schottky and Low-Power Schottky TTL counterparts

Counter Dividers Applications

• High-speed synchronous counting designs
• Memory decoding systems
• Data routing applications

Counter Dividers Procurement Notes

Verify the specific ordering code suffix against manufacturer documentation to confirm package type and tape/reel availability. Ensure the component meets the required operating temperature range of 0°C to +70°C. Confirm that the logic levels align with standard 5V TTL interfaces before integration into the circuit design.

Counter Dividers Selection Notes

Select this component when a decade counter is required instead of a binary counter. The DM74ALS162B provides synchronous clearing, unlike the asynchronous clear found in the DM74ALS161B. It offers improved AC performance over standard Schottky TTL while maintaining pin compatibility. Use the DM74ALS163B if a binary counter with synchronous clear is needed.

Counter Dividers Part Context

This part belongs to the DM74ALS16xB family of synchronous four-bit counters. The series includes the DM74ALS161B (binary, async clear), DM74ALS162B (decade, sync clear), and DM74ALS163B (binary, sync clear). All devices share similar switching specifications and utilize an advanced oxide-isolated, ion-implanted Schottky process.

Counter Dividers Replacement Considerations

• DM74ALS162BN