NXP Semiconductors HEF4028B
The HEF4028B is a 4-bit BCD to decimal decoder, a 4-bit BCO to octal decoder with active LOW enable or an 8-output (Y0 to Y7) inverting demultiplexer. The outputs are fully buffered for best performance. When used as a BCD to decimal decoder a 1-2-4-8 BCD code applied to inputs A0 to A3 causes the selected output to be HIGH.FEATURES AND BENEFITS
● Fully static operation● 5 V, 10 V, and 15 V parametric ratings
● Standardized symmetrical output characteristics
● Specified from 40 C to +85 C
● Complies with JEDEC standard JESD 13-B 3. Ordering information Table 1. Ordering information All types operate from 40 C to +85 C. Type number Package Name
DESCRIPTION
HEF4028BP DIP16 plastic dual in-line package; 16 leads (300 mil) HEF4028BT SO16 plastic small outline package; 16 leads; body width 3.9 mm Version SOT38-4 SOT109-1 NXP Semiconductors 4. Functional diagram HEF4028B BCD to decimal decoder Fig 1. Functional diagram A0 A1 A2 A3 10 13 12 11 DECODER 3 14 2 15 1 6 7 4 9 5 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 001aae598 A0 A1 A2 A3 Fig 2. Logic diagram Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 001aae600 HEF4028B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 8 — 17 November 2011 © NXP B.V. 2011. All rights reserved. 2 of 13 NXP Semiconductors HEF4028B BCD to decimal decoder 5.