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Rochester Electronics 54F161/BFA Environmental and export classification status description

The 54F161/BFA is a 4-bit binary counter with a synchronous design, meaning that all external inputs are sampled only at the rising edge of the clock signal. It features preset and clear functions for convenient initialization, as well as a carry-out signal for cascading multiple counters. Functions: 1. Binary Counting: The device can count in binary from 0 to 15 (2^4 - 1). 2. Synchronous Operations: Inputs are sampled at the rising edge of the clock signal for synchronous behavior. 3. Preset and Clear: Allows the counter to be asynchronously loaded with a specific value or cleared to zero. 4. Carry-Out: Provides a signal to indicate when the counter has reached its maximum value. Applications: - Frequency Division: Used in frequency division circuits to obtain lower frequency signals from high-frequency inputs. - Event Counting: Suitable for applications that require counting events or pulses. - Address Generation: Can be used for memory address generation in digital systems. - Sequence Generation: Useful in generating sequences for various control applications. Alternative Components: - SN54LS161: A similar 4-bit synchronous binary counter from Texas Instruments with comparable performance. - CD54HC161: A 4-bit synchronous presettable counter from Harris Corporation. Embedded Modules: The 54F161/BFA can be integrated into larger systems or PCB designs to provide counting and sequencing functions. It can be combined with other digital logic components to build more complex digital systems. Related Q&A: 1. Can I cascade multiple 54F161/BFA counters together? - Yes, the carry-out signal can be used to connect multiple counters for extended counting capabilities. 2. What is the maximum clock frequency supported by the 54F161/BFA? - The device can typically operate at clock frequencies up to several tens of megahertz, depending on the specific model and operating conditions. 3. Does the 54F161/BFA have any power-saving features? - The device does not have specific power-saving modes but can be disabled or put into a low-power state when not in use. 4. How do I preset the counter with a specific initial value? - By setting the preset inputs to the desired binary value and pulsing the load signal, you can preset the counter to the specified value. 5. Can the 54F161/BFA be used in asynchronous counting applications? - While the device is designed for synchronous operation, it can be adapted for asynchronous counting with additional logic circuitry.