SN74LV8154PWR

Counter Dividers Overview

The SN74LV8154 is a dual 16-bit binary counter with 3-state output registers, designed for 2-V to 5.5-V VCC operation. It features dedicated clock inputs for each counter and shares a clocked storage register to sample and save counter contents. Both counters share an asynchronous clear input. The 32-bit storage register maps onto the 8-bit output bus in 8-bit increments, requiring four reads to access full contents. Counters chain via CLKBEN to RCOA. All clocks are positive edge triggered; other inputs are active low.

Counter Dividers Feature Summary

• Configurable as two independent 16-bit up counters or a single chained 32-bit counter
• Supports partial-power-down mode via Ioff circuitry to prevent backflow current
• Includes latch-up protection exceeding 250 mA per JESD 17 standards
• Provides high ESD protection ratings across human body, machine, and charged-device models

Counter Dividers Applications

• Up counting applications
• Dual up counting systems
• Partial-power-down environments requiring output isolation

Counter Dividers Procurement Notes

Verify package availability as the PW variant status may vary. Confirm RoHS compliance and lead finish specifications against current orderable addenda. Ensure design accounts for thermal resistance differences between PDIP and TSSOP packages. Validate supply voltage ranges match system requirements of 2 V to 5.5 V. Check for any specific handling precautions related to static sensitivity during assembly.

Counter Dividers Selection Notes

Select this component when dual 16-bit counting or a single 32-bit count is required within a limited pin count. It suits designs needing shared storage registers and asynchronous clearing. Consider its 2-V to 5.5-V operating range for compatibility with various logic families. Evaluate its 3-state outputs for bus sharing applications. Verify timing constraints align with system clock speeds.

Counter Dividers Part Context

This device belongs to the SN74LV series, characterized by low-voltage CMOS technology. It integrates dual counter functionality into a single 20-pin package. The architecture allows flexible mapping of stored data to an 8-bit bus. It supports standard TTL-compatible interfaces while operating at lower voltages. The design emphasizes robustness against electrostatic discharge and latch-up events.

Counter Dividers Replacement Considerations

No public confirmed substitute part numbers are documented in the source material.