Datasheet

74HC_HCT154_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 12 February 2007 5 of 21
NXP Semiconductors
74HC154; 74HCT154
4-to-16 line decoder/demultiplexer
6. Functional description
[1] H = HIGH voltage level
L = LOW voltage level
X = don’t care.
Y13 15 data output (active LOW)
Y14 16 data output (active LOW)
Y15 17 data output (active LOW)
E0 18 enable input (active LOW)
E1 19 enable input (active LOW)
A3 20 address input
A2 21 address input
A1 22 address input
A0 23 address input
V
CC
24 supply voltage
Table 2. Pin description
…continued
Symbol Pin Description
Table 3. Function table
[1]
Input Output
E0 E1 A0 A1 A2 A3 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 Y11 Y12 Y13 Y14 Y15
HHXXXXHHHHHHHHHHHHHHHH
HLXXXXHHHHHHHHHHHHHHHH
LHXXXXHHHHHHHHHHHHHHHH
LLLLLLLHHHHHHHHHHHHHHH
HLLLHLHHHHHHHHHHHHHH
LHLLHHLHHHHHHHHHHHHH
HHL L HHHL HHHHHHHHHHHH
L L HL HHHHL HHHHHHHHHHH
HL HL HHHHHL HHHHHHHHHH
L HHL HHHHHH L HHHHHHHHH
HHHL HHHHHH H L HHHHHHHH
L L L HHHHHHHHHL HHHHHHH
HL L HHHHHHHHHHL HHHHHH
L HL HHHHHHHHHHHL HHHHH
HHL HHHHHHHHHHHHL HHHH
L L HHHHHHHHHHHHHHL HHH
HL HHHHHHHHHHHHHHHL HH
L HHHHHHHHHHHHHHHHHL H
HHHHHHHHHHHHHHHHHHHL