Technical Summary: HCC4041UB CMOS Quad True/Complement Buffer

HCC4041UB CMOS Quad True/Complement Buffer

Overview

The HCC4041UB is a member of the "B" series of high-speed CMOS devices, designed for extended temperature range operation. This IC is a quad true/complement buffer, providing four independent buffer circuits in a single package. Each buffer features both true and complemented outputs, making it highly versatile for digital logic applications requiring signal inversion or buffering.

Manufactured using advanced silicon-gate CMOS technology, the HCC4041UB offers the low power consumption typical of CMOS devices while maintaining high noise immunity and wide operating voltage range. The extended temperature range makes it suitable for industrial and automotive applications where environmental conditions may be harsh.

Key Features

Quad true/complement buffer in single package
Extended temperature range operation (-40°C to +125°C)
High noise immunity: 0.45 V_DD (typ.)
Wide operating voltage range: 3V to 18V
Low power consumption: 1µA (max) at 5V
Balanced propagation delays
Standardized symmetrical output characteristics
100% tested for quiescent current
ESD protection: HBM > 2000V
Pin and function compatible with CD4041B

Applications

The HCC4041UB finds use in a wide variety of digital and mixed-signal applications including:

Signal buffering and inversion
Bus driver circuits
Level shifting between different logic families
Clock distribution networks
Waveform generation
Industrial control systems
Automotive electronics
Test and measurement equipment
Consumer electronics

Electrical Characteristics

Absolute Maximum Ratings

Supply Voltage (V_DD): -0.5V to +20V
Input Voltage (V_IN): -0.5V to V_DD + 0.5V
Output Voltage (V_OUT): -0.5V to V_DD + 0.5V
Input Current (I_IN): ±10mA
Operating Temperature Range: -40°C to +125°C
Storage Temperature Range: -65°C to +150°C

DC Characteristics (V_DD = 5V, T_A = 25°C)

High Level Output Voltage (V_OH): 4.95V (min)
Low Level Output Voltage (V_OL): 0.05V (max)
Input Leakage Current (I_IN): ±0.1µA (max)
Quiescent Current (I_DD): 1µA (max)

AC Characteristics (V_DD = 10V, T_A = 25°C)

Propagation Delay (t_PHL, t_PLH): 60ns (typ)
Transition Time (t_THL, t_TLH): 40ns (typ)
Maximum Clock Frequency: 8MHz (typ)

Functional Description

The HCC4041UB contains four independent buffer circuits, each with true and complemented outputs. The logic diagram shows that each buffer consists of two cascaded inverters with outputs taken from both stages. This configuration provides both buffering and inversion functions simultaneously.

When the input is high, the true output goes high and the complement output goes low. Conversely, when the input is low, the true output goes low and the complement output goes high. The outputs can drive two low-power TTL loads or one low-power Schottky TTL load over the specified voltage range.

Package Information

Available Packages

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

Pin Configuration (PDIP)

Pin 1: Buffer 1 True Output (Q1)
Pin 2: Buffer 1 Complement Output (Q1')
Pin 3: Buffer 1 Input (A1)
Pin 4: Buffer 2 Input (A2)
Pin 5: Buffer 2 Complement Output (Q2')
Pin 6: Buffer 2 True Output (Q2)
Pin 7: Ground (V_SS)
Pin 8: Buffer 3 True Output (Q3)
Pin 9: Buffer 3 Complement Output (Q3')
Pin 10: Buffer 3 Input (A3)
Pin 11: Buffer 4 Input (A4)
Pin 12: Buffer 4 Complement Output (Q4')
Pin 13: Buffer 4 True Output (Q4)
Pin 14: Supply Voltage (V_DD)

Design Considerations

When designing with the HCC4041UB, several factors should be considered:

Unused inputs must be tied to V_DD or V_SS to prevent floating conditions
Decoupling capacitors (0.1µF ceramic) should be placed close to the V_DD pin
Output current should not exceed 10mA to prevent device damage
For high-speed applications, keep trace lengths short to minimize propagation delays
In noisy environments, consider adding Schmitt trigger inputs for improved noise immunity