CD4522 Programmable BCD Down Counter DIP-16 (CD4522 DIP IC)
The CD4522 is a high-voltage CMOS integrated circuit that functions as a BCD (Binary Coded Decimal) programmable synchronous down counter. It features internal look-ahead carry logic for high-speed cascading and a "0" state detection output that pulses high when the counter reaches zero.
This IC is primarily used in frequency synthesizers, digital timers, and programmable dividers where a specific count-down cycle is required. It is an ideal component for Arduino electronics projects in India involving precise time delays, BCD-based control systems, and decimal counting sequences.
Key Features
- Synchronous BCD (9 to 0) down counting capability
- "0" state detection output for terminal count signaling
- Cascadable for high-count BCD applications
- Asynchronous parallel load and master reset
- High noise immunity characteristic of CMOS technology
- Wide operating supply voltage range for versatile power options
- Low power consumption for battery-efficient timing circuits
- Fully static operation from DC to high frequencies
Specifications
- IC Type = BCD Down Counter
- Logic Family = CD4000
- Supply Voltage = 3V to 18V
- Package Type = DIP
- Number of Pins = 16
- Mounting Type = Through-Hole
- Clock Frequency = 4MHz at 5V
- Operating Temperature = -55 to 125 degrees Celsius
Interfaces
- P1-P4 = Jam Inputs for Parallel BCD Data
- Q1-Q4 = BCD Data Outputs
- CLK = Clock Input
- LD = Parallel Load (Active High)
- MR = Master Reset (Active High)
- CIN = Carry-In / Count Enable
- COUT = Carry-Out / Terminal Count
- "0" OUT = Zero State Detection Output
- VSS = Ground (0V)
- VDD = Positive Supply Voltage
