Technical Summary: HCC/HCF4099B CMOS Devices

HCC/HCF4099B CMOS 8-Bit Addressable Latch

Overview

The HCC4099B (extended temperature range) and HCF4099B (intermediate temperature range) are monolithic integrated circuits belonging to the "B" series of CMOS devices. These 8-bit addressable latches are designed for general-purpose digital logic applications, offering high noise immunity and low power consumption typical of CMOS technology. The devices are available in 16-lead dual in-line plastic or ceramic packages, as well as plastic micro packages, making them suitable for a wide range of industrial and commercial applications.

Key Features

CMOS Technology: Low power consumption and high noise immunity
Wide Operating Voltage Range: 3V to 15V DC supply voltage
Temperature Ranges:
- HCC4099B: -40°C to +125°C (extended range)
- HCF4099B: -40°C to +85°C (intermediate range)
8-Bit Addressable Latch: Individual bit addressing capability
Three-State Outputs: Allows for bus-oriented applications
High Current Drive: Capable of driving two low-power TTL loads
Multiple Package Options: Available in 16-lead DIP, ceramic, and plastic micro packages

Applications

The HCC/HCF4099B finds use in various digital systems including:

Data storage and retrieval systems
Memory address decoding
Input/Output port selection
Bus-organized systems
Industrial control systems
Automotive electronics
Consumer electronics
Telecommunication equipment

Electrical Characteristics

Absolute Maximum Ratings

Supply Voltage (VDD): -0.5V to +18V
Input Voltage (VIN): -0.5V to VDD + 0.5V
Operating Temperature Range:
- HCC4099B: -40°C to +125°C
- HCF4099B: -40°C to +85°C
Storage Temperature Range: -65°C to +150°C
Power Dissipation: 500mW

DC Electrical Characteristics

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

High-Level Input Voltage (VIH): 3.5V min (VDD = 5V)
Low-Level Input Voltage (VIL): 1.5V max (VDD = 5V)
High-Level Output Voltage (VOH): 4.95V min (VDD = 5V, IOH = -0.4mA)
Low-Level Output Voltage (VOL): 0.05V max (VDD = 5V, IOL = 0.4mA)
Input Leakage Current (IIN): ±0.1µA max (VDD = 15V, VIN = 0V or VDD)
Quiescent Supply Current (IDD): 1µA max (VDD = 15V, VIN = 0V or VDD)

AC Electrical Characteristics

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

Propagation Delay (Address to Output): 300ns max
Propagation Delay (Data to Output): 300ns max
Propagation Delay (Enable to Output): 300ns max
Output Transition Time: 200ns max
Input Capacitance: 7.5pF max

Functional Description

The HCC/HCF4099B is an 8-bit addressable latch featuring three-state outputs. The device operates as a memory element that can store data on any one of its eight bits, selected by a 3-bit address code (A0, A1, A2). The stored data appears on the output when the output enable (OE) is active low. When OE is high, the outputs are in a high-impedance state, making the device suitable for bus-oriented systems.

The write enable (WE) input controls the latching function. When WE is low, the addressed bit follows the data input (D). When WE transitions from low to high, the data present at D is latched into the addressed bit. All unaddressed bits maintain their previous states regardless of the D input.