General Description

The CD4514BC and CD4515BC are 4-to-16 line decoders with latched inputs implemented with complementary MOS (CMOS) circuits constructed with N- and P-channel enhancement mode transistors. These circuits are prima rily used in decoding applications where low power dissipa tion and/or high noise immunity is required. The CD4514BC (output active high option) presents a logical “1” at the selected output, whereas the CD4515BC presents a logical “0” at the selected output. The input latches are R–S type flip-flops, which hold the last input data pre sented prior to the strobe transition from “1” to “0”. This input data is decoded and the corresponding output is activated. An output inhibit line is also available.

Features

■ Wide supply voltage range: 3.0V to 15V

■ High noise immunity: 0.45 VDD (typ.)

■ Low power TTL: fan out of 2 compatibility: driving 74L

■ Low quiescent power dissipation: 0.025 µW/package @ 5.0 VDC

■ Single supply operation

■ Input impedance = 1012Ω typically

■ Plug-in replacement for MC14514, MC14515