DM74LS169AM

Counter Dividers Overview

The DM74LS169AM is a synchronous presettable binary counter from the Fairchild 74LS series, manufactured by onsemi. It features an internal carry look-ahead for high-speed cascading and supports up/down counting modes. The device operates within a supply voltage range of 4.75 V to 5.25 V and functions at a maximum count rate of 25 MHz. It is housed in a 16-lead Small Outline Integrated Circuit (SOIC) package with a width of 3.90 mm. The component is rated for operation between 0°C and 70°C and is currently classified as obsolete.

Counter Dividers Feature Summary

• Synchronous presettable binary counting architecture
• Internal carry look-ahead circuitry for high-speed cascading
• Bidirectional up and down counting capability

Counter Dividers Applications

• High-speed synchronous counting applications
• Cascaded multi-stage digital counters
• Frequency division circuits

Counter Dividers Procurement Notes

Verify part authenticity carefully as the DM74LS169AM is officially obsolete. Confirm manufacturer details, specifically checking for onsemi or Fairchild Semiconductor markings. Ensure the SOIC-16 package matches specifications. Request full datasheets to validate electrical parameters against original standards before integration into new designs.

Counter Dividers Selection Notes

Select this component only for legacy system maintenance or replacement where specific 74LS logic compatibility is required. Consider modern equivalents if new design constraints allow, given the obsolete status. Verify that the synchronous nature and internal carry look-ahead meet the timing requirements of the target application without external gating.

Counter Dividers Part Context

This part belongs to the standard 74LS TTL logic family, known for balanced speed and power consumption. The DM74LS169AM is a 4-bit variant designed for reliable digital state tracking. Its inclusion in the 74LS series ensures broad compatibility with other LS-family components in established industrial and consumer electronics architectures.

Counter Dividers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation due to the component's obsolete status.