4029 IC Binary/Decade Up/Down Counter
The CD4029BE is a presettable, synchronous 4-bit binary/decade up/down counter. This versatile IC can function in either binary mode or BCD (Binary-Coded Decimal) mode, depending on the logic level applied to the MODE input. It includes control inputs for preset (load), enable (clock), direction (up/down), and a carry-out signal, allowing for flexible cascading and custom counting sequences.
This counter supports both asynchronous presetting and synchronous counting, making it ideal for applications that require precise timing, multi-digit counters, or frequency division. It integrates easily into digital designs using CMOS technology, which ensures low power consumption, high noise immunity, and compatibility with other logic families.
Key Features
Dual counting modes: BCD and Binary
Up/Down counting control
Presettable with asynchronous load capability
High noise immunity and low static power consumption
Cascadable using the carry-out (CO) pin
Synchronous counting operation
Wide voltage supply range: 3V to 15V
TTL and CMOS compatible
DIP-16 package
Pin Configuration (DIP-16)
| Pin | Label | Description |
|---|---|---|
| 1 | Q1 | Output bit 1 |
| 2 | Q0 | Output bit 0 (LSB) |
| 3 | Q3 | Output bit 3 (MSB) |
| 4 | Q2 | Output bit 2 |
| 5 | CO | Carry-Out (for cascading) |
| 6 | DOWN/UP | Count Direction Control (LOW = Up) |
| 7 | CLOCK | Clock input |
| 8 | GND | Ground ‘ |
| 9 | PRE | Preset enable (active LOW) |
| 10 | B | Preset Data Input Bit 1 |
| 11 | C | Preset Data Input Bit 2 |
| 12 | D | Preset Data Input Bit 3 |
| 13 | A | Preset Data Input Bit 0 |
| 14 | MODE | Count Mode Select (LOW = BCD) |
| 15 | ENABLE | Count Enable (active LOW) |
| 16 | VDD | Positive Supply Voltage |
Product Specifications
| Parameter | Value |
|---|---|
| IC Type | Presettable Up/Down Counter |
| Logic Family | CMOS |
| Package | DIP-16 |
| Operating Voltage | 3V to 15V |
| Count Modes | Binary or BCD |
| Count Direction | Controlled by DOWN/UP pin |
| Load Function | Asynchronous (via PRE pin) |
| Max Clock Frequency | ~5 MHz at 10V |
| Operating Temp Range | -55°C to +125°C |
| Output Drive | ±1.5 mA typical |
Applications
Digital counters and dividers
Event counters and timers
Frequency counters
Digital clocks
Stepper motor control
Data sequencing
Scoreboards and display systems
Binary or BCD count generation
