Technical Summary: HCC4555B CMOS Dual 1-of-4 Decoder/Demultiplexer

Overview

The HCC4555B is a high-performance CMOS integrated circuit designed as a dual 1-of-4 decoder/demultiplexer. It is part of the "B" series CMOS devices, meeting all requirements outlined in JEDEC Tentative Standard No. 13A. This component is characterized by its symmetrical output characteristics, low power consumption, and wide operating voltage range, making it suitable for a variety of digital and mixed-signal applications. The HCC4555B is expandable and available in multiple package options, ensuring flexibility in system design.

Features

• Expandable Architecture: Multiple package options allow for flexible system integration.
• Symmetrical Output Characteristics: Ensures consistent performance across all outputs.
• Low Quiescent Current: Specified up to 20V for the HCC device, minimizing power consumption in standby mode.
• Wide Operating Voltage Range: Supports parametric ratings at 5V, 10V, and 15V, accommodating various logic levels.
• Low Input Current: Just 100nA at 18V and 25°C for the HCC device, reducing loading effects on preceding stages.
• Rigorous Testing: 100% tested for quiescent current to ensure reliability and performance consistency.
• Compliance: Fully compliant with JEDEC standards for "B" series CMOS devices.

Applications

The HCC4555B is a versatile component suitable for a wide range of applications, including:

• Digital Decoding: Used in address decoding for memory and peripheral selection in microprocessor-based systems.
• Demultiplexing: Functions as a 1-of-4 demultiplexer to route data signals to one of four output lines.
• Signal Routing: Ideal for switching and routing analog or digital signals in communication systems.
• Control Systems: Employed in industrial control systems for logic-level translation and signal distribution.
• Consumer Electronics: Used in remote controls, display drivers, and other low-power digital circuits.

Electrical Characteristics

The HCC4555B exhibits the following key electrical characteristics under standard operating conditions (unless otherwise specified):

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
• Operating Temperature Range: -55°C to +125°C (HCC version)
• Storage Temperature Range: -65°C to +150°C

DC Electrical Characteristics

• Quiescent Current (I_DD): Typically 1µA at 5V, 25°C; specified up to 20V.
• Input Leakage Current (I_IN): 100nA maximum at 18V, 25°C.
• Output Drive Current (I_OH/I_OL): ±1mA minimum at 5V, ±2.5mA at 15V.
• High-Level Output Voltage (V_OH): V_DD - 0.1V (min) at rated current.
• Low-Level Output Voltage (V_OL): 0.1V (max) at rated current.

AC Electrical Characteristics

• Propagation Delay (t_PD): 60ns typical at 10V, 25°C.
• Transition Time (t_TLH, t_THL): 30ns typical at 10V, 25°C.
• Maximum Clock Frequency (f_MAX): 8MHz typical at 15V.

Package Information

The HCC4555B is available in multiple package options to suit different assembly and space requirements. Below are the details for the most common packages:

16-Pin Plastic Dual In-Line Package (PDIP)

• Package Code: DIP16
• Dimensions: 19.3mm x 6.35mm x 4.57mm (L x W x H)
• Pin Pitch: 2.54mm
• Lead Material: Copper alloy, tin-plated

16-Pin Small Outline Package (SOIC)

• Package Code: SO16
• Dimensions: 9.9mm x 3.9mm x 1.65mm (L x W x H)
• Pin Pitch: 1.27mm
• Lead Material: Copper alloy, tin-plated

16-Pin Thin Shrink Small Outline Package (TSSOP)

• Package Code: TSSOP16
• Dimensions: 5mm x 4.4mm x 1.2mm (L x W x H)
• Pin Pitch: 0.65mm
• Lead Material: Copper alloy, tin-plated

Conclusion

The HCC4555B is a robust and versatile CMOS dual 1-of-4 decoder/demultiplexer, offering low power consumption, high noise immunity, and reliable performance across a wide voltage range. Its compliance with JEDEC standards and availability in multiple package options make it an excellent choice for designers seeking a dependable solution for digital decoding and signal routing applications. Whether used in industrial control systems, consumer electronics, or communication devices, the HCC4555B delivers consistent performance and flexibility.