Overview
The CD4029BM, produced by Texas Instruments, is a CMOS Presettable Up/Down Counter. This component is part of the CD4029B series and is no longer in production, with recommendations to consider alternate products for new designs. The CD4029BM is a four-stage binary or BCD-decade up/down counter with provisions for look-ahead carry in both counting modes. It features a single CLOCK input, CARRY-IN (CLOCK ENABLE), BINARY/DECADE, UP/DOWN, PRESET ENABLE, and four individual JAM signals. The outputs include Q1, Q2, Q3, Q4, and a CARRY OUT signal. The counter can be preset to any state asynchronously with the clock using the PRESET ENABLE and JAM inputs.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC (D), 16 pins |
| Operating Temperature Range | -55°C to 125°C |
| Maximum Clock Frequency | 8 MHz (typ.) @ CL = 50 pF and VDD - VSS = 10 V |
| Supply Voltage | 5 V, 10 V, 15 V |
| Quiescent Current | 100% tested at 20 V |
| Input Current | 1 µA at 18 V over full package temperature range; 100 nA at 18 V and 25°C |
| Noise Margin | 1 V at VDD = 5 V, 2 V at VDD = 10 V, 2.5 V at VDD = 15 V |
Key Features
- Medium-speed operation: 8 MHz (typ.) @ CL = 50 pF and VDD - VSS = 10 V
- Multi-package parallel clocking for synchronous high-speed output response or ripple clocking for slow clock input rise and fall times
- Preset Enable and individual Jam inputs provided
- Binary or decade up/down counting
- BCD outputs in decade mode
- Standardized, symmetrical output characteristics
- Meets all requirements of JEDEC Tentative Standard No. 13B, 'Standard Specifications for Description of B Series CMOS Devices'
Applications
- Programmable binary and decade counting/frequency synthesizers with BCD output
- Analog to digital and digital to analog conversion
- Up/Down binary counting
- Magnitude and sign generation
- Up/Down decade counting
- Difference counting
Q & A
- What is the CD4029BM? The CD4029BM is a CMOS Presettable Up/Down Counter produced by Texas Instruments.
- What are the key inputs of the CD4029BM? The key inputs include a single CLOCK, CARRY-IN (CLOCK ENABLE), BINARY/DECADE, UP/DOWN, PRESET ENABLE, and four individual JAM signals.
- What are the output signals of the CD4029BM? The outputs include Q1, Q2, Q3, Q4, and a CARRY OUT signal.
- What is the maximum clock frequency of the CD4029BM? The maximum clock frequency is 8 MHz (typ.) @ CL = 50 pF and VDD - VSS = 10 V.
- What are the supply voltage options for the CD4029BM? The supply voltage options are 5 V, 10 V, and 15 V.
- How does the PRESET ENABLE signal function? A high PRESET ENABLE signal allows the counter to be preset to any state asynchronously with the clock.
- What is the operating temperature range of the CD4029BM? The operating temperature range is -55°C to 125°C.
- What are the typical applications of the CD4029BM? Typical applications include programmable binary and decade counting, frequency synthesizers, analog to digital and digital to analog conversion, and more.
- Is the CD4029BM still in production? No, the CD4029BM is no longer in production and is marked as obsolete.
- What packaging options are available for the CD4029BM? The CD4029BM is available in 16-lead SOIC (D) packages among others.
