4040

Technical Summary: HCC4040B 12-Stage Binary Counter

Overview

The HCC4040B is a 12-stage binary counter integrated circuit belonging to the extended temperature range HCC4XXXB series of CMOS devices. This fully static counter offers medium-speed operation with buffered inputs and outputs, making it suitable for a variety of timing and frequency division applications. The device features common reset functionality and meets all requirements of JEDEC Tentative Standard No. 13A for "B" series CMOS devices.

Designed for reliable performance across industrial temperature ranges, the HCC4040B operates with parametric ratings at 5V, 10V, and 15V supply voltages. The device exhibits extremely low power consumption with quiescent current specified up to 20V, making it ideal for battery-powered applications.

Key Features

• 12-stage binary ripple counter with buffered outputs
• Medium-speed operation with fully static design
• Common reset functionality for synchronous clearing
• Buffered inputs and outputs for improved noise immunity
• Standardized symmetrical output characteristics
• Low input current: 100nA maximum at 18V and 25°C
• Wide operating voltage range: 3V to 18V
• 100% tested for quiescent current
• Extended temperature range operation
• Compliant with JEDEC Standard No. 13A

Applications

The HCC4040B finds use in numerous digital and timing applications including:

• Frequency division and counting circuits
• Digital clocks and timers
• Time delay generation
• Industrial control systems
• Automotive electronics
• Consumer electronics
• Battery-powered devices
• Sequential logic circuits
• Waveform generation
• Event counters

Electrical Characteristics

The HCC4040B exhibits the following key electrical parameters:

Absolute Maximum Ratings

• Supply Voltage (VDD): -0.5V to +20V
• Input Voltage (VIN): -0.5V to VDD + 0.5V
• DC Input Current (IIN): ±10mA
• Power Dissipation (PD): 200mW
• Operating Temperature Range: -55°C to +125°C
• Storage Temperature Range: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage Range: 3V to 18V
• Input Voltage Range: 0V to VDD
• Operating Temperature Range: -40°C to +85°C

DC Characteristics (VDD = 5V, TA = 25°C unless otherwise specified)

• High-Level Input Voltage (VIH): 3.5V min
• Low-Level Input Voltage (VIL): 1.5V max
• High-Level Output Voltage (VOH): 4.95V min (IOH = -0.4mA)
• Low-Level Output Voltage (VOL): 0.05V max (IOL = 0.4mA)
• Input Leakage Current (IIN): ±100nA max at 18V
• Quiescent Supply Current (IDD): 1μA max at 5V

AC Characteristics (VDD = 5V, TA = 25°C unless otherwise specified)

• Maximum Clock Frequency (fmax): 8MHz typical
• Propagation Delay (Clock to Qn): 250ns typical
• Reset Pulse Width (tW): 200ns min
• Rise/Fall Time (tr, tf): 100ns max

Functional Description

The HCC4040B is a 12-stage binary counter that advances on the negative-going transition of the clock input. The counter stages are master-slave flip-flops with the state of each stage transferred to the next stage on the negative clock transition. All counter stages are reset to zero when a high level is applied to the reset input.

The device features buffered inputs and outputs, providing improved noise immunity and drive capability compared to unbuffered CMOS devices. The fully static operation allows the counter to maintain its state indefinitely with the clock input held at either high or low level, making it suitable for low-frequency applications where power conservation is critical.

Package Information

The HCC4040B is available in multiple package options to suit different application requirements:

Standard Package Options

• 16-pin Plastic Dual In-line Package (PDIP)
• 16-pin Small Outline Package (SOP)
• 16-pin Thin Shrink Small Outline Package (TSSOP)

Package Dimensions (PDIP-16)

• Body Length: 19.30mm max
• Body Width: 6.35mm max
• Body Height: 4.44mm max
• Lead Pitch: 2.54mm

Pin Configuration

• Pin 1: Q12 (Output stage 12)
• Pin 2: Q6 (Output stage 6)
• Pin 3: Q5 (Output stage 5)
• Pin 4: Q7 (Output stage 7)
• Pin 5: Q4 (Output stage 4)
• Pin 6: Q3 (Output stage 3)
• Pin 7: Q2 (Output stage 2)
• Pin 8: VSS (Ground)
• Pin 9: Clock (Negative-edge triggered input)
• Pin 10: Reset (Active high input)
• Pin 11: Q1 (Output stage 1)
• Pin 12: Q9 (Output stage 9)
• Pin 13: Q8 (Output stage 8)
• Pin 14: Q10 (Output stage 10)
• Pin 15: Q11 (Output stage 11)
• Pin 16: VDD (Positive supply)

Design Considerations

When implementing the HCC4040B in circuit designs, consider the following:

• Ensure proper decoupling capacitors are placed near the VDD and VSS pins
• Unused inputs should be tied to either VDD or VSS
• The reset input should be held low during normal operation
• For maximum speed operation, minimize capacitive loading on outputs
• In noisy environments, consider adding small capacitors to clock inputs
• For battery-powered applications, operate at the lowest practical voltage

Reliability and Quality

The HCC4040B is manufactured under strict quality control procedures and undergoes 100% testing for quiescent current. The device meets or exceeds all relevant industry standards for CMOS integrated circuits, including:

• JEDEC Standard No. 13A
• Industrial temperature range qualification
• ESD protection on all inputs and outputs
• Latch-up immunity testing

The extended temperature range version (HCC prefix) is specifically designed for applications requiring operation in harsh environments, with guaranteed performance from -40°C to +85°C.