Description:
The CD4028B series offers versatile decoding capabilities, functioning as both BCD-to-decimal and binary-to-octal decoders. These devices feature input buffering for all four inputs, decoding logic, and 10 buffered outputs. The CD4028B is capable of decoding a 4-bit BCD code (inputs A to D) into one of the 10 decimal outputs, while a 3-bit binary code (inputs A to C) can be decoded into octal outputs (0 to 7) when input D is set to "0." This high-performance decoder series is ideal for applications requiring high drive capability and robust DC and dynamic performance, particularly where high fan-out is necessary.
The CD4028B is available in various package types, making it highly adaptable for different system designs and applications.
Key Features:
BCD-to-decimal and binary-to-octal decoding functionality
High drive capability for both DC and dynamic performance
Positive logic configuration, where selected outputs go high
Medium-speed performance: tPHL and tPLH typically 80 ns at VDD = 10 V
Balanced and standardized output characteristics
Low input current: Maximum 1 µA at 18 V over the full temperature range; 100 nA at 18 V at 25°C
Noise Margins:
1 V at VDD = 5 V
2 V at VDD = 10 V
2.5 V at VDD = 15 V
Operates at supply voltages of 5 V, 10 V, and 15 V
Complies with JEDEC Tentative Standard No. 13B for CMOS devices
Quiescent current tested at 20 V
Applications:
Code conversion (BCD to decimal, binary to octal)
Indicator-tube decoding
Address decoding and memory selection control
Package Options:
16-lead Hermetic Dual-in-Line Ceramic Packages (F3A suffix)
16-lead Dual-in-Line Plastic Packages (E suffix)
16-lead Small-Outline Packages (M, M96, MT, and NSR suffixes)
16-lead Thin Shrink Small-Outline Packages (PW and PWR suffixes)
Disclaimer:
Product specifications, features, and design may change over time due to product updates or improvements.
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