STMicroelectronics M54HC161YBF Integrated Circuit

The M54HC161YBF is a high-speed CMOS 4-bit binary counter IC produced by STMicroelectronics, a leader in semiconductor solutions. This integrated circuit is part of the HC family, which is well-known for its low power consumption and high noise immunity equivalent to LS-TTL circuits. The M54HC161YBF combines silicon-gate C2MOS technology to achieve operating speeds similar to LSTTL with the low power consumption of standard CMOS integrated circuits.

This particular model of binary counter features synchronous counting and asynchronous master reset. The synchronous design allows for precise timing and sequencing of counting operations, which is crucial for applications that require exact timing, such as frequency division or event counting. The asynchronous master reset enables the counter to be quickly and easily reset to zero without the need for the count to progress through the entire count cycle.

The M54HC161YBF has a wide operating voltage range from 2V to 6V, which makes it versatile for use in various electronic applications, from portable battery-powered devices to industrial control systems. Additionally, the counter can directly drive a common 10 LSTTL load due to its high output current capability, both in the high and low states.

This IC features four output pins (Q0 to Q3) representing the four bits of the binary count, two count enable inputs (P and T), a clock input (CP), and an asynchronous master reset input (MR). The counter increments on the rising edge of the clock input when both count enable inputs are active. The outputs change state synchronously with the clock's rising edge, ensuring reliable and predictable output transitions.

The M54HC161YBF is available in a 16-pin ceramic flat package, which provides excellent thermal stability and protection against harsh environmental conditions. This makes it suitable for high-reliability applications in aerospace, military, and industrial markets where robustness and durability are critical.

In summary, the M54HC161YBF from STMicroelectronics is a robust, high-performance 4-bit binary counter that offers a blend of speed, power efficiency, and reliability, making it an excellent choice for a wide range of counting applications.