SN74LV8154N

Counter Dividers Overview

The SN74LV8154N is a dual 16-bit binary counter with 3-state output registers manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 5.5 V and supports up-counting on positive clock edges. The device features dedicated clock inputs for each counter, a shared asynchronous clear input, and a storage register that samples counter contents. Outputs are mapped via an 8-bit bus using byte-select gates. It is housed in a 20-pin PDIP package.

Counter Dividers Feature Summary

• Dual independent 16-bit counters or single 32-bit counter configuration
• 3-state output registers with 8-bit data bus mapping
• Partial-power-down support through Ioff circuitry
• Positive-edge triggered clocks with active-low control inputs

Counter Dividers Applications

• Up counting applications
• Dual up counting systems
• Address mapping in memory architectures

Counter Dividers Procurement Notes

Verify the specific ordering suffix matches the required package type. Confirm RoHS compliance status and lead time directly with the manufacturer or authorized distributors before placing orders. Ensure design compatibility with recommended operating conditions regarding supply voltage and temperature ranges.

Counter Dividers Selection Notes

Select this component when dual 16-bit counting or cascaded 32-bit counting is required. Verify that the system utilizes an 8-bit data bus for reading stored counts. Ensure the application environment stays within the specified -40°C to 85°C operating temperature range and adheres to the 2-V to 5.5-V supply voltage limits.

Counter Dividers Part Context

This part belongs to the SN74LV logic family, designed for low-voltage digital applications. It provides high-density counting capabilities in a standard through-hole package. The device integrates storage registers to facilitate efficient data sampling and bus interfacing in complex digital systems.

Counter Dividers Replacement Considerations

SN74LV8154PW (TSSOP-20)

Counter Dividers FAQ

How is a 32-bit counter implemented?

Connect CLKBEN to RCOA to chain the two 16-bit counters into a single 32-bit counter.

What is the function of the GAL, GAU, GBL, and GBU inputs?

These active-low inputs select which byte of the storage register is mapped to the Y0-Y7 output bus.