4077 - Quad Exclusive-NOR Gate Technical Summary

Overview

The 4077 is a quad exclusive-NOR gate integrated circuit belonging to the 4000 series CMOS logic family. This device provides four independent logic gates, each performing the exclusive-NOR (XNOR) function in a single package. The 4077 is characterized for medium-speed operation with typical propagation delays of 70ns at 10V supply voltage. It is designed for wide operating voltage ranges and features very low power consumption, making it suitable for battery-operated applications.

The HCC version of this device offers extended temperature range operation and improved specifications, including lower input currents and higher voltage tolerance. The 4077 meets all requirements of JEDEC Tentative Standard No. 13A for "B" series CMOS devices, ensuring compatibility and reliability across different manufacturers.

Features

• Medium-speed operation: t_PHL = t_PLH = 70ns (typical) at V_CC = 10V, C_L = 50pF
• Low quiescent current specified up to 20V for HCC devices
• Wide operating voltage range: 3V to 15V (5V, 10V and 15V parametric ratings)
• Extremely low input current: 100nA maximum at 18V and 25°C for HCC devices
• 100% tested for quiescent current
• Fully static operation
• Standardized symmetrical output characteristics
• Complies with JEDEC Standard No. 13A for "B" series CMOS devices
• HCC version offers extended temperature range (-55°C to +125°C)

Applications

The 4077 finds use in a wide variety of digital logic applications where the XNOR function is required. Typical applications include:

• Digital comparators and equality detectors
• Parity generators and checkers
• Arithmetic logic units (ALUs)
• Error detection circuits
• Data transmission systems
• Battery-powered portable equipment
• Industrial control systems
• Automotive electronics
• Consumer electronics
• Security systems

The device's wide operating voltage range makes it particularly useful in systems where power supply voltage may vary, such as in battery-operated equipment where voltage drops as the battery discharges.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage Range (V_DD): -0.5V to +20V
• Input Voltage Range (V_IN): -0.5V to V_DD + 0.5V
• Storage Temperature Range: -65°C to +150°C
• Power Dissipation per Package: 500mW
• Power Dissipation per Output Transistor: 100mW

Recommended Operating Conditions

• Supply Voltage Range (V_DD): 3V to 15V
• Input Voltage Range (V_IN): 0V to V_DD
• Operating Temperature Range:
  • Standard: -40°C to +85°C
  • HCC Version: -55°C to +125°C

DC Electrical Characteristics

(V_DD = 5V, T_A = 25°C unless otherwise specified)

• 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
• Input Leakage Current (I_IN): ±0.1µA (max) at V_DD = 18V
• Quiescent Supply Current (I_DD): 1µA (max) at V_DD = 20V

AC Electrical Characteristics

(V_DD = 10V, C_L = 50pF, T_A = 25°C unless otherwise specified)

• Propagation Delay Time (t_PHL, t_PLH): 70ns (typical), 150ns (max)
• Input Capacitance (C_IN): 5pF (typical)
• Power Dissipation Capacitance (C_PD): 30pF (typical)

Package Information

The 4077 is available in several standard package options to accommodate different application requirements:

• 14-pin Plastic Dual In-line Package (PDIP)
  • Package Code: DIP-14
  • Body Dimensions: 19.3mm x 6.35mm
  • Lead Pitch: 2.54mm
  • Operating Temperature: -40°C to +85°C (Standard), -55°C to +125°C (HCC)
• 14-pin Small Outline Package (SOIC)
  • Package Code: SO-14
  • Body Dimensions: 8.65mm x 3.9mm
  • Lead Pitch: 1.27mm
  • Operating Temperature: -40°C to +85°C (Standard), -55°C to +125°C (HCC)
• 14-pin Thin Shrink Small Outline Package (TSSOP)
  • Package Code: TSSOP-14
  • Body Dimensions: 5mm x 4.4mm
  • Lead Pitch: 0.65mm
  • Operating Temperature: -40°C to +85°C

Pin Configuration

The 4077 features the following pinout configuration:

• Pin 1: Input A for Gate 1
• Pin 2: Input B for Gate 1
• Pin 3: Output for Gate 1
• Pin 4: Output for Gate 2
• Pin 5: Input B for Gate 2
• Pin 6: Input A for Gate 2
• Pin 7: V_SS (Ground)
• Pin 8: Input A for Gate 3
• Pin 9: Input B for Gate 3
• Pin 10: Output for Gate 3
• Pin 11: Output for Gate 4
• Pin 12: Input B for Gate 4