Datasheet

January 1995 3
Philips Semiconductors Product specification
Dual 1-of-4 decoder/demultiplexer
HEF4555B
MSI
TRUTH TABLE
Notes
1. H = HIGH state (the more positive voltage)
2. L = LOW state (the less positive voltage)
3. X = state is immaterial
INPUTS OUTPUTS
EA
0
A
1
O
0
O
1
O
2
O
3
LL L H L L L
LH L L H L L
LL H L L H L
LH H L L L H
HX X L L L L
Fig.3 Logic diagram (one decoder/multiplexer).