Description
• CD4028B types are BCD-to- decimal or binary-to-octal decoders consist. ing of buffering on all 4 inputs, decoding- logic gates, and 10 output buffers. A BCD code applied to the four inputs, A to D, results in a high level at the selected one of 10 decimal decoded outputs. Similarly, a 3-bit binary code applied to inputs A through C is decoded in octal code at output 0 to 7 if D – “O”. High drive capability is provided at all outputs to enhance de and dynamic performance in high fan-out applications. The CD4028B-Series types are supplied in 16-lead hermetic ceramic packages (F3A suffix), 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline packages (M, M96, MT, and NSR suffixes), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).
Features: • BCD-to-decimal decoding or binary-to-octal decoding • High decoded output drive capability • “Positive logic” inputs and outputs. _ • decoded outputs go high on selection • Medium-speed operation.. (pHL• (PLH * 80 ns (typ.) @ VDD = 10 V • Standardized, symmetrical output characteristics • 100% tested for quiescent current at 20 V • Maximum input current of 1 yA at 18 V over full package-temperature range: 100 nA at 18 V and 25° C • Noise margin (over full package temperature range): 1 V at VDD = 5 V 2 V at VDD * 10 V 2.5 V at VDD = 15 V • 5.V, 10-V, and 15-V parametric ratings • Meets all requirements of JEDEC Tentative Standard No. 138, “Standard Specifications for Description of ‘B’ Series CMOS Devices” Applications: • Code conversion = Indicator-tube decoder • Address decoding-memory selection control
