The HD74160P is a synchronous decade counter manufactured by Hitachi. It's designed for high-speed counting applications where accurate timing and control are crucial. This device features a synchronous counting operation, meaning all flip-flops are clocked simultaneously, ensuring predictable and reliable performance.

Applications

• Frequency dividers
• Digital clocks and timers
• Event counters
• Address counters in memory systems
• Sequence generators

Features

• Synchronous counting operation
• Decade (BCD) counting sequence
• Direct clear input
• Carry output for cascading counters
• TTL compatible inputs and outputs

Benefits

• Provides accurate and reliable counting
• Simplifies the design of counting circuits
• Allows for easy cascading to create larger counters
• Reduces component count and board space
• Enhances system performance

Additional Details

The HD74160P operates from a single 5V power supply and is typically available in a 16-pin DIP (Dual In-line Package). The counter advances on the positive transition of the clock input, provided the enable inputs (ENP and ENT) are both high. A low level on the clear input (CLR) asynchronously resets the counter to zero. The carry output (RCO) goes high when the counter reaches a count of 9 and both enable inputs are high. This carry output can be used to clock the next stage in a cascaded counter arrangement. The device incorporates internal look-ahead carry logic to improve counting speed. The outputs (QA-QD) represent the BCD count, with QA being the least significant bit and QD being the most significant bit. The setup and hold times for the enable and clear inputs are critical for proper operation and must be observed according to the device's datasheet.