Overview
The MC14553BCPG, produced by onsemi, is a 3-digit BCD (Binary-Coded Decimal) counter integrated circuit. This device is designed to handle BCD counting across three digits, making it suitable for various digital display and counting applications. It features a synchronous cascading of three negative edge-triggered BCD counters, each equipped with a quad latch for storing the count. The device also includes an on-chip oscillator for generating a low-frequency scanning clock and supports time division multiplexing of the BCD outputs.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Counter Type | BCD | Counting Sequence | Up |
| Number of Circuits | 3 | Number of Bits | 3 bit |
| Logic Family | 14553 | Logic Type | CMOS |
| Number of Input Lines | 1 | Propagation Delay Time | 1800 ns, 1000 ns, 400 ns |
| Max Supply Voltage | 18 V | Minimum Operating Temperature (°C) | -55 |
| Maximum Operating Temperature (°C) | +125 | Function | Counter |
| Mounting Style | Through Hole | Number of Output Lines | 4 |
| Collector-Emitter Saturation Voltage | -500 mV to 18 V | Factory Pack Quantity | 500 |
| Width | 6.85 mm |
Key Features
- TTL Compatible Outputs: Ensures compatibility with TTL logic systems.
- On-Chip Oscillator: Provides a low-frequency scanning clock, which can be controlled externally by a capacitor or overridden by an external clock.
- Cascadable: Allows multiple devices to be cascaded using the overflow output.
- Clock Disable Input: Prevents the input clock from reaching the counters, retaining the last count.
- Pulse Shaping: Permits the counters to operate on input pulses with very slow rise times.
- Output Latches: Stores the count information in latches, which can be retained independently of other inputs.
- Master Reset: Initializes the counters and multiplexer scanning circuit when taken high.
- Pb-Free Packages Available: Compliant with lead-free packaging requirements.
Applications
The MC14553BCPG is versatile and can be used in a variety of applications, including:
- Instrumentation counters
- Clock displays
- Digital panel meters
- General logic applications
- Six-digit displays and other multi-digit display systems
Q & A
- Q: What is the MC14553BCPG?
A: The MC14553BCPG is a 3-digit BCD counter integrated circuit produced by onsemi.
- Q: What are the key features of the MC14553BCPG?
A: Key features include TTL compatible outputs, an on-chip oscillator, cascading capability, clock disable input, pulse shaping, output latches, and master reset.
- Q: How does the on-chip oscillator work?
A: The on-chip oscillator generates a low-frequency scanning clock, which can be controlled externally by a capacitor or overridden by an external clock.
- Q: What is the purpose of the master reset input?
A: The master reset input initializes the counters and the multiplexer scanning circuit when taken high.
- Q: Can multiple MC14553BCPG devices be cascaded?
A: Yes, multiple devices can be cascaded using the overflow output.
- Q: What are the typical applications of the MC14553BCPG?
A: Typical applications include instrumentation counters, clock displays, digital panel meters, and general logic applications.
- Q: What is the operating temperature range of the MC14553BCPG?
A: The operating temperature range is from -55°C to +125°C.
- Q: Is the MC14553BCPG available in lead-free packages?
A: Yes, Pb-free packages are available for the MC14553BCPG.
- Q: How does the pulse shaping feature work?
A: The pulse shaping feature allows the counters to operate on input pulses with very slow rise times.
- Q: What is the function of the output latches in the MC14553BCPG?
A: The output latches store the count information, which can be retained independently of other inputs.
