4029 Technical Summary

Overview

The 4029 is a CMOS presettable up/down counter integrated circuit (IC) that offers versatile counting functionality in digital electronics applications. It is part of the 4000 series CMOS logic family, known for its low power consumption and wide operating voltage range. The 4029 is designed to provide reliable counting operations in both binary and binary-coded decimal (BCD) modes, making it suitable for a variety of counting and sequencing tasks.

This IC features a synchronous counting mechanism, meaning all flip-flops within the counter are clocked simultaneously, ensuring precise and glitch-free operation. The 4029 is widely used in frequency division, time delay generation, and digital display applications due to its flexibility and ease of integration.

Features

• Presettable Counter: Allows the counter to be loaded with a predefined value via parallel inputs.
• Up/Down Counting: Supports both incrementing (up) and decrementing (down) counting modes.
• Binary and BCD Modes: Configurable for either binary (4-bit) or BCD counting.
• Synchronous Operation: All internal flip-flops are clocked simultaneously for reliable performance.
• Wide Operating Voltage Range: Typically operates from 3V to 15V, making it compatible with various power supplies.
• Low Power Consumption: CMOS technology ensures minimal power draw, ideal for battery-operated devices.
• Cascadable: Multiple 4029 ICs can be cascaded for higher-bit counting applications.
• High Noise Immunity: Robust design reduces susceptibility to electrical noise.

Applications

The 4029 is a versatile component used in a wide range of digital and embedded systems. Below are some common applications:

• Frequency Dividers: Used to divide clock signals in digital circuits.
• Digital Clocks and Timers: Integral part of timekeeping circuits, especially in BCD mode.
• Industrial Control Systems: Employed in sequencing and control logic.
• Event Counters: Tracks occurrences of specific events in digital systems.
• Display Drivers: Drives numeric displays in conjunction with decoder ICs.
• Automotive Electronics: Used in dashboard counters and odometer circuits.
• Consumer Electronics: Found in appliances with counting or timing functions.

Electrical Characteristics

The following table summarizes the key electrical specifications of the 4029 IC under typical operating conditions (V_DD = 5V, T_A = 25°C unless otherwise noted):

Absolute Maximum Ratings

• Supply Voltage (V_DD): -0.5V to +18V
• Input Voltage (V_IN): -0.5V to V_DD + 0.5V
• Operating Temperature Range: -55°C to +125°C
• Storage Temperature Range: -65°C to +150°C

DC Electrical Characteristics

• High-Level Input Voltage (V_IH): 3.5V (min) at V_DD = 5V
• Low-Level Input Voltage (V_IL): 1.5V (max) at V_DD = 5V
• High-Level Output Voltage (V_OH): 4.95V (min) at I_OH = -0.4mA
• Low-Level Output Voltage (V_OL): 0.05V (max) at I_OL = 0.4mA
• Quiescent Current (I_DD): 1µA (max) at V_DD = 10V

AC Electrical Characteristics

• Maximum Clock Frequency (f_CLK): 8MHz (typ) at V_DD = 10V
• Propagation Delay (t_PD): 200ns (max) from clock to output
• Setup Time (t_SU): 100ns (min) for preset inputs
• Hold Time (t_H): 0ns (min) for preset inputs

Package Information

The 4029 is available in multiple package options to suit different assembly and space requirements. Below are the most common package variants:

DIP-16 (Dual In-Line Package)

• Package Type: PDIP-16 (Plastic Dual In-Line)
• Pin Count: 16
• Dimensions: 19.3mm x 6.35mm (body)
• Pin Spacing: 2.54mm (standard DIP pitch)
• Operating Temperature: -55°C to +125°C

SOIC-16 (Small Outline Integrated Circuit)

• Package Type: SOIC-16 (Surface Mount)
• Pin Count: 16
• Dimensions: 10.3mm x 5.3mm (body)
• Pin Spacing: 1.27mm
• Operating Temperature: -55°C to +125°C

TSSOP-16 (Thin Shrink Small Outline Package)

• Package Type: TSSOP-16 (Surface Mount)
• Pin Count: 16
• Dimensions: 5mm x 4.4mm (body)
• Pin Spacing: 0.65mm
• Operating Temperature: -55°C to +125°C

Order Codes

The 4029 is available under various manufacturer-specific order codes. Below are some common part numbers:

• CD4029BE: DIP-16 package (Texas Instruments)
• MC14029BDR2G: SOIC-16 package (ON Semiconductor)
• HEF4029BT: SOIC-16 package (NXP Semiconductors)
• TC4029BP: DIP-16 package (Toshiba)

Conclusion

The 4029 is a highly versatile and reliable presettable up/down counter IC, suitable for a broad range of digital applications. Its ability to operate in both binary and BCD modes, combined with low power consumption and robust performance, makes it a preferred choice for designers working on counting and sequencing tasks. Whether used in consumer electronics, industrial controls, or automotive systems, the 4029 delivers consistent performance across various operating conditions